How to choose right refractory castable for your needs

 

1.Refractory castable based on Application

Generally, the refractory material is engineered to perfection. But, it might not suit your refractory lining. Focus on the type of application of your refractory insulation. Choose suitable refractory products.

2. Choose Common Refractory Materials

Basically, everyone wants fast and cheap options, no matter the industry.

However, choosing cheap refractories ceramics will cost more in the future. So, consider buying the tried and tested refractory material regardless of price.Because refractory contractors know they are best for boiler refractory and furnaces.

3. Research Refractory Lining Trends

Although there is new refractory insulation technology, discuss with your refractory contractor first.This is because trends may seem too good to be true. Avoid asking for new types of furnace bricks for your refractory contractor to use.The engineering contractor will suggest a material that suits your refractory insulation.

4. Choose the Right Refractory Contractor

Basically, everyone thinks they are the best. But, in the end, the most experienced engineer will make the correct decision. Therefore, choose a refractoryfactory that fits your criteria. Then, they will provide refractory products and services that suit your refractory lining.

Different Refractory Castable

Things To Remember When Using Castable

1. Castables must always be stored in a cool and dry area.

2. One must ensure that the mixers and tools are free from old castable or any other material that can contaminate the product. Such contamination could affect the strength of the castable mix.

3. Only drinking suitable water should be used to mix castable. The temperature of the mix should be optimal as well.

4. Be careful while mixing castable, like castable refractory cement. Too much mixing generates heat and speeds up the setting time.

5. The forms should be covered with oil or grease to prevent moisture loss.

6. After placing the mix, the castable needs to be cured for 18 to 24 hours straight. Cover it with polyethylene sheets and spray it with cold water periodically. It will maintain the moisture of the mix and promote uniform curing at the applied area.

   

Silica Ramming Mass

Advantages Of Castable Refractories

Saves Time

Ease in usage

Significantly Better Structure Performance

Choosing refractory castable for the insulation process is one of the most thoughtful decisions. Their advantages and wide application seal the deal.  But what is even more important is finding a reliable refractory material supplier.  Welcome to contact us anytime.

Article Source: How to choose right refractory castable for your needs
Company name: Henan Changxing Refractory Materials Co.,Ltd
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Ladle magnesia refractory castable mixing notes

 Ladle magnesia refractory castable mixing notes:

1. Stirring with a forced mixer. When mixing, do not mix into the bag, rope head and other debris, affecting the pouring effect and performance.
2. Mixing depends on the on-site unpacking of the castable. The amount of mixing depends on the capacity of the mixer. The castable should be accurately metered and poured into the mixer.
3. The process of dry mixing and dry mixing is adopted. After the casting material is added to the mixer, dry mixing for 2 minutes, adding water about 5.2~5.5%, adding water while stirring, first adding 80% of the total amount, and then depending on the consistency of the stirring material, as appropriate add (and note that the mixing water must be clean tap water, not sewage), wet mix for 4 minutes, and stir for at least 6 minutes, until the castable is uniform.
4. When mixing, strictly control the water consumption and mixing time to ensure the consistency required for the construction. If the castable is too thin, it will seriously affect the quality of the material.
5. The evenly mixed material should be poured in 20 minutes, so as not to be difficult to cast for a long time, affecting the strength of the ladle lining structure.
6. The mixer should be cleaned every time the construction is completed or the type of castable material is changed.

We Changxing Refractory Material Co.,LTD is professional manufacturer and supplier of refractory materials for more than 30 years. Our high quality tundish dry vibration mix are good sold to many countries say South Africa, Bangladesh, Indonesia, Malaysia, etc. Shall any interests, welcome to contact us. Our team would make best to be your reliable partner!

Article Source:Ladle magnesia refractory castable mixing notes
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Magnesia refractory castable pouring method

 1. Vibration casting with 30~50mm vibrating rod.

2. Firstly, the bottom of the package is filled with the material, and the vibrating rod is used to level the vibration to ensure the thickness of the casting layer or slightly thickened.
3. After the bottom of the package, after placing for 2~4 hours, place the core, the core should be placed in the middle of the ladle, not offset, and should be leveled, the surface of the core should be cleaned, treated to be slippery and oiled.

(1) The vibrating bar must not touch the core and the heat insulating material, so it should be kept at a certain distance from the core and the heat insulating material, but it should not be larger than 50mm.
(2) The penetration depth of the vibrating bar shall not touch the underlying castable, but the distance from the lower layer shall not exceed 50 mm.
(3) The distance of the insertion point of the vibrating bar should not exceed 200mm, keep the uniform and dense vibration, and slowly lift the vibrating bar when it is pulled out. Do not pull out suddenly to avoid leaving holes.
(4) A special person should be in charge of mastering the vibrating rod. If it is found that there are unqualified quality requirements, it should be treated in time to continue construction.
(5) Pouring the wall of the package is usually two rounds of material vibration, each feeding thickness is about 250mm, to achieve uniform cloth, and pay attention to uniform vibration, avoid leakage vibration, vibration should be dense.

We Changxing Refractory Material Co.,LTD is professional manufacturer and supplier of refractory materials for more than 30 years. Our high quality refractory products are good sold to many countries say South Africa, Bangladesh, Indonesia, Malaysia, etc. Shall any interests, welcome to contact us. Our team would make best to be your reliable partner!

Article Source：Magnesia refractory castable pouring method
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The importance of porosity to refractory castables

 The ratio of the volume of pores in a material to the total volume of the material can be divided into true porosity, closed porosity and apparent porosity. It is usually called apparent porosity in the refractory industry in my country. The pores in refractory materials can be roughly divided into three categories: closed pores, open pores, and through pores. Generally, the above three types of pores are combined into two types, namely, open pores (including through pores) and closed pores. The apparent porosity refers to the volume density of all open pores in the material, which is the ratio of the dry mass of the refractory material to its total volume (the sum of the volume of solid, open pores and closed pores), that is, the mass per unit volume of the material use g/cm3 or kg/m3 said.

The bulk density of dense shaped refractory products should be determined according to the national standard GB/T2997-2000. The bulk density of shaped heat-insulating refractory products shall be determined according to the national standard GB/T2998-2001. The bulk density of dense refractory castables should be measured according to YB/T5200-1993.

Porosity is the basic technical index of most refractory materials. It almost affects all properties of refractory products, especially strength, thermal conductivity, corrosion resistance, and thermal shock resistance. Generally speaking, the porosity increases, the strength decreases, the thermal conductivity decreases, and the corrosion resistance decreases. Refractory castable is an unshaped refractory made of granular and powdered refractory materials according to a certain composition, plus a certain amount of binder and water, and formed by stirring and vibration casting. It is widely used in metallurgy, glass, cement, petrochemical, High-temperature industries such as energy.

Refractory castables will inevitably produce pores in the dehydration and sintering stages of the molding and heat treatment process. According to statistics, in the dense refractory castable, the matrix accounts for 25% of the total volume of the castable, and the pores account for about 10% of the total volume of the matrix. It can be seen that the pores are an important part of the matrix microstructure. The pore structure parameters include a very rich content, such as porosity, pore shape and distribution, pore size and pore size distribution, pore volume, etc. They all determine the mechanical and thermal properties of refractory castables to a large extent.

Article Source：The importance of porosity to refractory castables
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What factors should be considered when selecting methods of casting

Casting method commonly is sand casting, followed by special casting method, such as: metal casting, investment casting, plaster casting .. and so on. The sand casting sand can be divided into clay casting, organic binder sand casting, resin from the hard sand, lost foam and evanescent mode etc.
1.Priority should be using sand casting, mainly reason is compared with other casting methods, sand casting is with low cost, and its production process is simple with short production cycle. When the wet type can not meet the requirements, we can consider to use dry clay sand or other sand. Casting weight with green sand casting is from a few kilograms to dozens of kilograms, while dry clay production castings can be dozens of tons.
2.Casting method should adapt production volume, such like low-pressure casting, die-casting, centrifugal casting and other casting methods, because equipment and tooling are expensive, so mass production is the most suitable choice.
3.Modeling method should be suitable for refractory factory conditions.
4.Take into account the accuracy requirement and cost of the casting.
Changxing refractory provides refractory products, calcium silicate products, castable & mortar, china refractory brick, ceramic fiber felt, ladle & tundish nozzle, ceramic fiber with high quality for you. Such as high alumina refractory bricks, magnesia carbon brick, clay refractory bricks and other refractory products.
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Methods to masonry of boiler castable

There are several methods could be taken, to protect the boiler castable from being destroyed during masonry.
(1) The balance of refractory castable and water is important, adding not too much or too little water.
(2) Blended castable should be used within 30 minutes, and please add it to the certain depth and length at a time.
(3) Mold of it could be demolished after the castable is strong enough. The load-bearing form should be demolished when the castable reaches 70% of the strength. In order to facilitate stripping, pouring all the mold before pouring surface should be coated with a layer of oil.
(4) After the boiler masonry to have enough natural drying period, so that most of the refractory layer of water can be precipitated.
(5) Before the oven, the furnace lining material must have a certain natural strength (enough safety period) to carry out. Oven principle "should not be short, should be slow should not be fast."
Changxing refractory provides refractory products, calcium silicate products, castable & mortar, china refractory brick, ceramic fiber felt, ladle & tundish nozzle, ceramic fiber with high quality for you. Such as high alumina refractory bricks, Magnesia Carbon Brick, clay refractory bricks and other refractory products.
Article Source: Methods to masonry of boiler castable
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Silicon carbide based refractory materials

Silicon carbide (SiC) is an artificial mineral, refractory raw materials for the silica and coke, 2000 ℃ above the high temperature electric furnace synthesis, silicon carbide refractory is divided into three categories: (1) plus clay and other oxide-bound products; (2 ) Nitride-bonded products; (3) the use of silicon carbide recrystallization, pressure molding self-bonding products. One of the most common application of clay bonding products, China is currently the production and use of this one.

Carbide as a binder of silicon carbide grade products containing SiC87%, refractoriness up to 1800 ℃, load softening point 1620 ℃. The silicon carbide products have some special properties that make it suitable for certain applications such as (1) its thermal conductivity is about 10 times higher than that of conventional refractory materials and is suitable for use as heat-conducting devices such as heat treatment furnaces Cover. Because of its good thermal conductivity, 1200 ℃ below a strong antioxidant, so the life than the metal cover long. According to the same reason, can also be used as heat exchanger components. (2) mechanical strength, good wear resistance, resistance to rapid cooling hot or good, so some of the roller furnace with it for easy to wear roller sets, the cost is lower than the heat-resistant steel. (3) larger than the resistance, can be used as electric resistance of the furnace.

We are mainly producing high alumina brick, high alumina refractory fire bricks, alkali resistant brick, castable, clay brick, insulation brick, light high alumina brick, low creep high alumina brick, high aluminum wear Brick, high aluminum lightweight insulation brick, clay insulation brick, if you have any need contact us anytime.

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Refractory castable material inspection before construction

Construction of refractory casting material before should strictly check the following:
1. Casting material construction is made of steel or hard wood templates are available. The template must be of adequate strength, good rigidity, not out of shape, do not shift, no leakage of slurry. Steel template to mold release agent. Wood template to brush waterproof paint. The repeated use of the template to cleaning, painting can be used.
2. Water, pouring refractory raw material should be strictly according to the manual control, shall not exceed the limit. Under the premise of ensuring the construction performance, the amount of water should be less than.
3. Castable refractory mixing time should not less than 5 minutes. The operation to the use of forced mixer. Mixing should first dry mix, then add 80% dosage of water mixing, and then depending on the extent of wet and dry, gently stir until the remaining water, obtaining suitable work consistency so far. Stirring casting material different should first mixer clean.
4. Pouring refractory material must use the whole barrel bag full of. Stirring casting refractory material generally good must be used within 30 minutes. Drying at high temperature working environment should be appropriate to shorten this time. Already first castable coagulation even caking not poured into the mould, nor of mixing water reuse.
5. If the project inspection unqualified should deal with qualified rear can construction. Expired materials shall not be used. Construction of castable to ensure that no power outages not interrupted construction.
Chinafirebrick provides refractory products, calcium silicate products, castable & mortar, refractory fire brick, ladle & tundish nozzle, ceramic fiber with high quality for you.There have many kinds of refractory products in our factory. What's more, there also have magnesia carbon brick and other magnesium products products in our factory. Welcome to view our website and contact us anytime.
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Construction method of refractory casting material

Chinafirebrick provides refractory products, calcium silicate products, castable & mortar, china refractory brick, ceramic fiber felt, ladle & tundish nozzle, ceramic fiber with high quality for you. Such as high alumina refractory bricks, Magnesia Carbon Brick, clay refractory bricks and other refractory.

Castable lining construction
1, refractory castable construction
2, castable stir
Mixing time should be no less than 5 minutes. Operation to use a forced mixer, stirring should first dry mixing, then add 80% solvent stirring, and then depending on the degree of wet and dry construction and specific parts of the request, and then slowly add the remaining solvent until the appropriate working consistency until. In ensuring the construction performance of the premise, the amount of solvent should be less good.

Refractory castables should be used in the whole bag, stir well castable must be used within 30 minutes. In the high temperature drying of the operating environment but also to shorten the time. Has been initial coagulation or agglomeration of refractory castables shall not be used, do not add solvent stirring and then use.
3, vibrating
Refractory castable pouring into the template should be immediately vibrated with a vibrator, each layer height is less than 300 mm, vibration spacing to 2500mm is appropriate.
Vibration, try to avoid touching the anchor, shall not damage the insulation layer, not in the same position for a long time and re-vibration. Casting surface after the slurry should be slowly out of the vibrator to avoid casting material and the emergence of isolated phenomenon. The cast body after pouring can no longer be pressed and shocked before solidification.
4, pouring and expansion joints
Large area construction pouring to block construction. Each casting area to 1.5m2 is appropriate (with a mixing amount of synchronization.) Expansion joints required to stay (usually in the pouring time to consider), shall not be missed. In the kiln, the expansion joints in the decomposition furnace are located in the axial ring, not less than 4, to aluminum silicate fiber felt as the material.
5, maintenance and mold release inspection
After the surface of the castable material is dried, it is necessary to carry out the necessary maintenance according to the construction and maintenance requirements, especially the castable for water conservation, and sprinkle it regularly to keep the surface moist. After the final pouring of refractory raw material can be removed side mold to continue to sprinkler conservation, but the load-bearing template to be the strength of 70% before stripping.
After the removal of the template should be timely on the casting inspection, found honeycomb, peeling and empty quality problems such as timely processing and repair. When the problem is serious, the defect should be chiseled to expose the anchor, and then use the homogeneous pound to fill the material to continue conservation. It is forbidden to cover up the problem with mud.
6, composite lining construction
On the fire-resistant insulation composite lining to be layered construction, is strictly prohibited mixed layer of slurry construction, insulation materials (such as silicon calcium board, silicon aluminum, asbestos or slag cotton, etc.) should be sprayed with waterproof moisture-proof refractory castable. There have many refractory news and refractory products information on web. You can read more refractory products and know more refractory materials information. Because our website has many kinds of refractory news and industry news. what's more ,you can know more kinds of refractory information from our website.
Article Source: Refractory raw materials
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Technological process of refractory castable

The production of refractory castables, it is important to say that the process of production lines and facilities. Refractory ramming material, refractory spray paint, refractory repair and refractory coating and other materials, and its production and refractory castable is basically the same. Refractory castable production process, some of the raw materials without crushing, can be used directly. For example, aluminum hollow ball, ceramsite, expansion of the perlite and industrial aluminum and so on. According to the production scale and raw material varieties and characteristics of the conditions, the selection of important facilities: crushing - jaw crusher there are three categories, the model to the proportion of the feed port, an important 250mm × 400mm and 600 mm × 400mm, production capacity of 5 ~ 20t / h. Used for large pieces of coarse crushing.
Crushing - refers to the refractory raw material after crushing and crushing, but also the preparation of pellets. The facilities are cone crusher, roller crusher and dry mill. Sieve - the particles will be crushed material according to the size of the grain composition of different particles. The facilities are fixed slanting sieve and electromagnetic picking sieve and so on. The former screening efficiency of 70% before and after the latter is generally more than 90%. Fine grinding - refers to the production of refractory powder. The main facilities are ball mill, tube mill and sensory mill, etc . premix - refers to the additive, admixture, binder and fine powder and all the powder or a mixture of several kinds of powder, so called premixed powder. The facilities are double helix cone agitator and so on. Ingredients are generally used in electronic, weighing standards; stirrer with a forced agitator, mixing material can be input sub-installed and then sub-installed, but also from the extruder at the exit directly packed into bags; In addition, there are vertical Promotion machines, belt conveyors and equipment vehicles and other facilities.
The production of refractory castables, the production of refractory aggregates and powder, soft clay and other raw materials, and firing the same as the china refractory brick, not the same as the refractory aggregate critical particle size, grading, so the need for sieve Points, promotion and other facilities, storage silos are also more. At the same time, the preparation of premixed powder, which is a special process.
Chinafirebrick provides refractory products, calcium silicate products, castable & mortar, fire brick, ceramic fiber felt, ladle & tundish nozzle, ceramic fiber with high quality for you. Such as high alumina refractory bricks, Magnesia Carbon Brick, clay refractory bricks and other refractory.
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Castables for reheating furnace

Heating furnace is used for rolling steel or forging steel billet or small steel ingot thermal equipment, the operating temperature below 1400 degrees. With the rapid development of refractory castables, more and more castables are used for reheating furnace, the most common used of them are as follows:.
(1) Self-flow castable
Applicable to the furnace structure is more complex, artificial can not vibrate the site. The maximum temperature of 1500 ℃, which is characterized by good thermal shock resistance, high refractoriness, construction is simple, almost no vibration.
(2) Refractory plastic
For the furnace roof, furnace wall face.
(3) Low cement castable
Applicable to the high temperature furnace, the temperature zone, the use of temperature between 1400 ~ 1500 ℃.
(4) Phosphate castables
It is suitable for the bottom of the furnace and other parts which are subject to friction and hot air scouring. The mixing degree is between 1000 and 1600 ℃. It is made of phosphoric acid or phosphate as the binder, aluminum cement and magnesite. A castable of a gelling agent.
(5) Mullite castable
High thermal shock resistance, erosion resistance, good corrosion resistance, good volume stability, high temperature, it is generally used in the furnace wall, roof and pressure beam and other key parts, or used to prefabricated burner brick.
(6) Anti-dry slag castable
It is suitable for the bottom of the furnace and the site where the iron oxide slag is deposited. The maximum temperature of up to 1600 ℃. Its main features are: high refractoriness, thermal shock resistance, and can be a good resistance to heating furnace iron oxide slag erosion.
(7) Light castable
Light castable for furnace wall, roof, flue and other parts of the insulation layer. High-strength lightweight castables can also be used as a working lining for smoke and hot air ducts.
Article Source:Castables for reheating furnace
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The main raw material of domestic powder metallurgy is no longer single

In the refractory raw materials, the current domestic powder metallurgy main raw material has not a single reduction of iron powder, electrolytic copper powder, the domestic has been able to produce atomized iron powder, stainless steel powder, high-speed steel powder, coated powder and various elements of metal powder, Powder, etc., can basically meet the needs of domestic production of high-strength parts, but also the production of special-purpose raw material powder, greatly expanding the powder metallurgy product varieties, but in quality and variety and abroad there is still a big gap.
In the powder metallurgy equipment, through the introduction of enterprises, the purchase of foreign powder molding presses, sintering furnace, mold processing and testing equipment and digestion and absorption, transformation of equipment used to improve product quality and shorten the gap with foreign production level provides a guarantee.
In the powder metallurgy products, has been able to produce high strength, complex shape of the powder metallurgy parts, such as passenger matching timing pulley, motorcycle supporting the use of primary driven gear and other structural parts. However, some, high-grade powder metallurgy parts (such as Buick cars powder metallurgy parts) need to import.
Enterprises to reorganize, cultivate large enterprises, large groups, to achieve scale of operation. Increase technical innovation and scientific research and innovation investment, speed up the new technology, new product development. Improve the mold design and manufacturing level, the application of computer-aided design and manufacturing. Products to high strength, complex shape and special performance of powder metallurgy parts direction. There have many kinds of refractory products in our factory. Such as fire brick for sale, refractory raw material, refractory nozzle, refractory fire brick for sale and other refractory products.
Article souce: The refractory raw material of domestic powder metallurgy is no longer single

The Belt and Road,Mutually beneficial Win-win with the world

The Belt And Road, refers to economic Belt "silk Road" and "Marine silk Road" of the 21st century. On September 7th, 2013, chairman Xi Jinping delivered an important speech at the university of Kazakhstan Nursultan Nazarbayev, the first time to put forward strengthen policy communication, road unicom, trade flow, currency, hearts are interlinked, work together for economic belt "silk road" of the strategic initiative; On October 3rd, 2013, the chairman Xi Jinping putted forward when delivered an important speech in Indonesia congress explicitly, China is committed to strengthening the construction of connectivity with ASEAN countries, and is willing to work with ASEAN countries develop Marine partnership, mutual construction "Marine silk road" of the 21st century. There have many kinds of refractory products in our factory. Such as fire brick for sale, refractory nozzle,refractory raw material, Magnesia Carbon Brick and other refractory.

Economic belt "silk road" and "Marine silk road economic belt" involving 65 countries and regions as follows.

Mongolia in east Asia, the 10 ASEAN countries: Singapore, Malaysia, Indonesia, Myanmar, Thailand, Laos, Cambodia, Vietnam, Brunei and the Philippines;

Josiah 18 countries: Iran, Iraq, Turkey, Syria, Jordan, Lebanon, Israel, Palestine, Saudi Arabia, Yemen, Oman, the united Arab emirates, Qatar, Kuwait, Bahrain, Greece, Cyprus and Egypt's Sinai Peninsula;

Eight South Asia countries: India, Pakistan, Bangladesh, Afghanistan, Sri Lanka, Maldives, Nepal and Bhutan;

The five central Asian countries, Kazakhstan, Uzbekistan, Turkmenistan, Tajikistan and Kyrgyzstan.

Commonwealth of independent states (CIS) 7 countries: Russia, Ukraine, Belarus, Georgia, Armenia, Azerbaijan, and Moldova.

16 countries in central and eastern Europe, Poland, Lithuania, Estonia, Latvia, the Czech republic, Slovakia, Hungary, Slovenia, Croatia, Bosnia and Herzegovina, Montenegro, Serbia, Romania, Bulgaria, Albania and Macedonia.

Under the policy support of “The Belt And Road”, China's refractory industry exports also has a great growth, Changxing company in the area all the way to continue under the policy of adhering to the good quality, excellent service tradition, and establish friendly cooperation relationship with many new customers, to make mutual benefit and win-win!

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The properties and applications of silicon carbide

On the domestic 34 black silicon carbide production enterprises to investigate statistics, in March China's black silicon carbide business average operating rate of 49%, compared with February increased by 6.58%. Changxing refractory offers many kinds of refractory products for you. Such as fire brick for sale, refractory nozzle ,refractory raw materila and other refractory products. March, Gansu Province, environmental protection efforts to reduce the number of enterprises have been normal production, coupled with the output of Ningxia region has also been restored, so in March China's black silicon carbide production continued to rise. Ningxia area operating rate from 51.89% to 62.81%; Gansu region operating rate from 29.86% to 36.49%.

China's black silicon carbide inventories rose in March, slightly lower downstream purchases, but after entering in April, the downstream inventory is insufficient, coupled with the export market exports will increase, taking into account some of the green silicon carbide production enterprises have Converting black silicon carbide in the plan, it is expected in April China's black silicon carbide production will continue to rise.

Changxing always offer best products and top servic for you all the time. Such as magnesia carbon brick, fire brick, refravtory raw material and other refractory products. Welcome to view our factory anytime.
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Tips in the use of ladle steel flow initiator

Tips in the use of ladle steel flow initiator:
1. Due to the ladle steel flow initiator in the ladle nozzle for a long time high temperature state, requiring a high degree of refractory sintering.

2. Due to ladle steel flow initiator filled into the outlet directly after contact with molten steel, the initial sintering temperature should not be too high.

3. Ladle steel flow initiator in the use of the process to withstand the large static pressure of molten steel, in order to prevent the collapse of the material, requiring raw materials with very good mobility, ladle steel flow initiator particles between the friction should be as low as possible.

4. Under the action of high temperature, control the appropriate drainage of raw materials, the volume effect of raw materials to prevent the use of the process in the production of ladle steel flow initiator can not automatically fall or can not effectively support the upper material.
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The application of chromite ore fines

Chromite ore fines has good increasing friction effect in low and high temperature, plays a dual role too. Added to rubber can play a good role of increasing friction, and do not scratch the duality and noise. In the friction material commonly used in chromite fines Cr203, content of 25%-40%, the higher Cr203 content, increasing friction effect is bigger. Use should pay attention to controlling the amount and particle size. Proper dosage should not exceed 7%, particle fineness more than 200 projects. Excessive dosage and coarse grain size can improve the friction coefficient but also will cause friction increases obviously.
The basic direction of the development of refractory fire brick technology is based on independent innovation as the basic starting point, take the refractory material design and application of scientific, production, application of fine and green, consumption reduction and resource conservation of the integration of the road to promote research and development On a new level. The innovative direction of the refractory for the cement industry is chrome-free and energy-saving.
There have many kinds of refractory products in our factory. Such as fire brick ,magnesia carbon brick, refractory raw material, refractory nozzle and other refractory products. When you want to know more kinds of refractory products, welcome to view our factory anytime.
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The development trend of green refractory materials

The future expansion of cement kilns in refractory materials can benefit from the promotion of similar energy conservation policies in the cement kiln, developed by the magnesium aluminum spinel, mafic spinel and mafic aluminum spinel brick in large new dry cement Brick kiln sintering belt and transition zone used to meet or exceed the magnesium chrome brick life, can replace magnesium chrome brick, significantly reduced the chromium pollution.
In the increasingly scarce national resources today, the new green and energy saving has become the purpose of the development of refractories. At present, Europe, Japan, the United States and other countries and regions due to government regulations, has been basically no chromium refractories, the use of green refractory has become an inevitable trend.There have many kinds of refractory products. Such as fire brick for sale, refractory nozzle, refractory raw material and other refractory products.

Should focus from the big, small start, face the reality, have focused, vigorously promote the user side, the production side, the R & D side, the design side of the co-operation and coordination. As a business, should strengthen cooperation with scientific research institutions and user units, increase production and research cooperation efforts, in the green refractory technology to achieve new breakthroughs.

China's refractory industry, the overall level of development from the advanced green there is a certain distance. Green refractories have attracted the attention of refractories and related industries. Relevant government departments and trade associations have also developed corresponding policies and measures to encourage and promote the fire-resistant green work. China Refractories Association also believes that the second five during the development of refractory materials will show new features, its basis is to improve product quality and application level, the focus is to increase or strengthen the new content, that is, energy saving and low carbon.

The basic direction of the development of refractory fire brick technology is based on independent innovation as the basic starting point, take the refractory material design and application of scientific, production, application of fine and green, consumption reduction and resource conservation of the integration of the road to promote research and development On a new level. The innovative direction of the refractory for the cement industry is chrome-free and energy-saving.
For the understanding of green refractory materials and behavior, should be under the guidance of the concept of systematic, balanced. For the refractory industry, should be from the preparation of raw materials to the production, construction, application and post-processing in all aspects of scientific and systematic considerations, to avoid thinking and vision confined to a point or face and trade-off.

Strengthen the energy-saving emission reduction, the development of green, low-carbon refractory products, is the global green economic strategy on the refractory industry's fundamental requirements. To further promote the refractory industry, technological innovation, product structure adjustment and application of technology to enhance and vigorously develop longevity energy-saving, environmentally friendly new type of green refractory products, refractory materials industry has become a megatrends.
There have many kinds of refractory products in our factory.Such as fire brick ,magnesia carbon brick, refractory raw material, refractory nozzle and other refractory products.
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Welcome to know the factors that affect the use of slide gate plate

1.Breakage around the hole caused by thermal shock. Small crack could appear when high temperature molten steel and refractory material get in touch, so it is crutial to improve the termal shock resistance and take measures to prevent the cracks from expanding.There have many kinds of refractory products in our factory. Such as magnesia carbon brick, fire brick for sale, refractory nozzle, refractory raw material.

2.The erosion and impact from molten steel and slags. The erosion and impact resistance abilities of slide gate plate has a big influence on its service life. The erosion is mainly from the Mn, MnO, FeO, CaO in the molten steel and SiO2 from slide gate plate, erosion resistance ability can be improved if the SiO2 content in slide gate plate is reduced. By improving carbon content, the permeation and reaction from molten steel and oxide can be effectively prevented, by adding antioxygen, the oxidation of carbon can be effectively prevented;

3.The abrasion during sliding. Especially when there is already damage on the ladle slide gate plate, the abrasion from the concrete steel will be more serious. So the strength should be improved, meanwhile keep low apparent porosity and smooth surface to reduce the penetration from molten steel. The main effective ways of improving strength and lowering apparent porosity are high pressure forming and vacuum oil immersing.There have many kinds of refractory products in our factory. Such as magnesia carbon brick, fire brick for sale, refractory nozzle, refractory raw material. When you need any refractory products, welcome to view our factory anytime.
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The features of magnesite for producing magnesia carbon brick

Magnesite is the main raw material for magnesia carbon brick, normally there are two kinds, sintered magnesite and fused magnesite. But comparing this two kinds, fused magnesite has the advantages of lager periclase crystal, bigger bulk density, etc. It is the priority raw material for producing magnesia carbon brick. When producing normal magnesia based refractory material, the requirements on megnesite are high temperature resistance and erosion resistance, thus the purity of magnesite, C/S ratio and B2O3 content are important. With the development of metallurgy industry, the smelting condition is becoming harder, the requirement of megnesite used for producing magnesia carbon bricks used in smelting equipment(such as Converter, EAF, Ladle) is not only on the chemical composition, but also on structure like high density and large crystal.
There have many kinds of refractory products in our factory. Such as magnesia carbon brick, fire brick for sale, refractory nozzle, refractory raw material. When you need any refractory products, welcome to view our factory anytime.
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Classification of unshaped refractory material

Compared with shaped refractory material, and unshaped refractory material have many advantages. For example, easy manufacturing process, short manufacturing period, saving energy, good integrity when using, widely application, and convenient for installation.

Though all with same shape, unshaped refractory products have different type. Generally, it is divided into following types:

1. According to porosity, there are compact unshaped material and insulating unshaped material.Compact unshaped material is common product. While insulating unshaped material is light weight castable, which is made according to ISO1927-75 standard. After frying, whose porosity cannot less than 45%.

2. According to different binder, castable is divided into two big molds, which are Inorganic binder castable and organic binder castable. According to Hardening mode , there are air hardening castable, hydraulicity castable, hot hardness castable and others kinds castable.

3. According to Construction characteristics, there are refractory castable, gunning mix, plastic castable, ramming mass, coating material , refractory mortar, vibration material and others.

Even with same specification, different function with different manufacturing method, if you need this kind products, please confirm application in advance. Welcome to view our website to know more kinds of refractory products. Such as fire brick for sale, refractory nozzle, refractory raw material and Magnesia Carbon Brick. Welcome to view our factory to know more details about refractory products.
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