The specification of refractory bricks

Refractory firebrick is aluminum silicate refractory material, with A12O3 and SiO2 as its basic chemical composition, according to A12O3 and SiO2 content ratio, this type of refractory material is divided into three kinds: semi-silica brick (A12O3 15 ~ 30%), Clay brick (A12O3 30 ~ 48%), high alumina brick (A12O3> 48%). Clay brick is one of the largest and most widely used, the output of the total output of refractory materials of about 60 to 70%.
Refractory brick raw material is calcined after A12O3 + TiO2 content of not less than 30% of the china refractory brick, alkali and alkaline earth metal oxides and iron oxide content should be as little as possible, generally about 5-7%. Fire resistance of refractory clay must be no less than 1580 ℃. Clay raw materials after calcination, broken, ingredients (adding soft clay as a binder), pressing molding, drying, firing and other processes, you can get finished refractory bricks.
Refractory firebrick is weak acid refractory. As the chemical composition of the larger fluctuations in the production methods are different, the difference in firing temperature, so that the nature of clay brick changes. Ordinary clay brick according to the composition of the content of Al2O3 is divided into (NZ) a 40, (NZ) a 35, (NZ) a 30 three grades. The refractory degree of clay brick is above 1600 ℃, but the starting softening temperature is very low, only 1250 ~ 1300 ℃, and the load softening start temperature and the final temperature (fflJ40% deformation temperature) interval is large, this interval is about 200 ~ 250 ℃. Clay brick is very important in this nature, it makes the clay brick, although not too high refractoriness, but still can be applied to many high-temperature thermal equipment. Clay brick quenching and cooling is better, at 850 ℃ water cooling up to 10 to 25 times. Clay brick can resist weak acid slag erosion, little resistance to alkaline slag, increase the content of Al2O3, can improve the ability of alkali-resistant slag.
The refractory firebrick is rich in raw materials, the manufacturing process is simple and the cost is the lowest, and it is widely used in the furnace, flue, chimney, waste heat utilization device and burner of various heating furnaces and heat treatment furnaces. 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.
Article Source: fire brick for sale
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/

The specification of mullite castable

Mullite castable is to high-quality porous mullite aggregate as refractory raw materials, plus fine powder and additives into the mixture. Mullite aggregate critical particle size of 12mm; long-term use of the temperature of 1350 degrees. Changxing refractory also offer mullite insulating firebrick and  other refractory products.
Features:
Mullite pouring material using high temperature, can be directly exposed to the flame for the use of refractories working lining to achieve high temperature energy saving; unit capacity light weight, structural weight to reduce 40 ~ 60%, to eliminate the roof hanging fire brick fracture; low thermal conductivity, to the stone aggregate ingredients, low thermal conductivity, good insulation properties; can quickly oven, shorten the oven duration, significant economic benefits;
Applications:
Mullite Castable for the petrochemical industry tubular heating furnace, light diesel oil, ethane cracking furnace lining, atmospheric pressure reducing furnace, sulfur recovery device, steam boiler, tortoise net insulation layer, two barrels and pipe insulation single Layer, other industrial furnace door, see the fire hole, observation hole door lining and so on.
We are mainly producing high alumina bricks, high alumina refractory fire brick, alkali resistant bricks, refractory bricks, clay tiles, insulation bricks, light high alumina bricks, low creep high alumina brick, high aluminum wear Brick, high aluminum lightweight insulation brick, clay insulation brick, if you have any need please call our service hotline.
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.
Article Source: fire brick for sale
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/

Physical and chemical index of Low creep high alumina brick

Low creep high alumina brick is a special bauxite clinker as the main raw material, supplemented by special additives, high pressure molding, high temperature firing, with thermal storage capacity, small creep rate, etc., suitable for small and medium blast furnace Matching hot air stove.
Creep high alumina bricks physical and chemical indicators
Specifications DRL-135 DRL-145 DRL-150 DRL-165 DRL-155 DRL-150
Al2O3,% ≥ 70 75 80 65 55 48
Refractoriness, ℃ ≥ 1790 1790 1790 1790 1770 1750
Apparent porosity,% ≤ 20 20 19 24 24 24
Normal temperature compressive strength, MPa ≥ 65 70 80 49 44.1 39.2
The rate of change of the burner,% ≥ ± 0.1 ± 0.1 ± 0.1 + 0.1 ~ -0.4 + 0.1 ~ -0.4 + 0.1 ~ -0.4
1450 ℃ x2h 1500 ℃ x2h 1450 ℃ x2h
0.2MPa load softening start temperature, ℃ ≥ 1500 1550 1650 1500 1470 1420
High temperature creep rate,% ≤ 0.6
1350 ° C × 50 h 0.6 0.7
1450 ℃ × 50h 1500 ℃ × 50h
We are mainly producing high alumina bricks, high alumina refractory fire brick, alkali resistant bricks, refractory bricks, clay tiles, insulation bricks, light high alumina bricks, low creep high alumina brick, high aluminum wear Brick, high aluminum lightweight insulation brick, clay insulation brick, if you have any need please call our service hotline.
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.
Article Source: high alumina brick
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/

Main factors affecting using life of blast furnace bottom and hearth

1.Design structure: Resonable design structure (salamander depth, material selection and arrangement) is the foundation of safety and long service life of blast furnace bottom and hearth.
2.Refractory raw material quality: Refractory material quality is the promise of safety and long service life of furnace bottom and hearth.The higher the price, the better the quality of the merchandise.In this respect, we have many lessons.
3.Construction quality:The quality of construction and material quality are equally important(Flatness of flat steel and screed、Gap and integrity of carbon brick、The density of ramming material and so on）.
4.Operation level：Improper operation will cause the hearth to be inactive , coke duichen sitting dead,the circulation of molten iron in hearth is aggravated. All these will affect the service life of furnace hearth.
5.Monitoring means: Only through modern monitoring methods, timely monitoring of the erosion of the hearth, the trend of development, to know the situation, and know why, so that we can nip in the bud.
There have many kinds of refractory products in our factory. What's more, there have many refractory news and refractory information in our website. Welcome to view our website and contact us anytime.
Article Source:Refractory castable material inspection before construction
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/

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.
Article Source: Refractory castable material inspection before construction
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/

Changxing Refractory begins to cooperate with the biggest steel group in central Asia

The biggest steel group in Central Asia begins to establish cooperation relationship with Changxing Refractory after analysis and test to our whole refractory solution and sample.
It is another important step for us to develop the global refractory market. Changxing Refractory will keep moving on the road of supplying considerate services and high quality refractories.
Changxing Refractory is a Chinese leading refractory and oil fracturing proppant manufacturer & supplier with a wide range industries in high temperature field. From a refractory bricks manufacturing factory, Changxing has become a professional manufacturer with various refractory materials and oil fracturing proppant both in domestic and international market during 30+ years, whose customers covers North America, Middle East, Asia, Africa, etc.
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. Chinafirebrick provides refractory products, Magnesia Carbon Brick, castable and mortar, fire brick, ladle and tundish nozzle, ceramic fiber with high quality for you.
Article Source: Changxing Refractory begins to cooperate with the biggest steel group in central Asia
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/

Changxing Refractory opens the refractory market in Germany

After the past several weeks' negotiation and sollution optimization, both sides Changxing Refractory and German client are very satisfied with the final cooperative agreements. Based on the win-win cooperation, the first order had been placed and will be finished in the next several days.
It is a good beginning for Changxing Refractory to get foot in Germany with high quality and competitive price refractories. Changxing Refractory will always provide clients with excellent pre-sale and after-sale service and high quality refractory products.
Changxing Refractory is a Chinese leading refractory and oil fracturing proppant manufacturer & supplier with a wide range industries in high temperature field . From a refractory brick China manufacturing factory, Changxing has become a professional manufacturer with various refractory materials and oil fracturing proppant both in domestic and international market during 30+ years, whose customers covers North America, Middle East, Asia, Africa, etc.
Changxing refractory has a production line, which is base on oil & gas applied ceramic proppant, and also with 3 factories focusing on all kinds of refractory materials used for iron & steel casting, cement, glass petrochemical and ceramics industries. With abundant sources and professional techniques, Changxing Refractory would like to build a reliable and efficient platform for customers all over the world.
Article Source:Changxing Refractory opens the refractory market in Germany
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/