Repair of EAF bottom

All the steel slags should be tapped out before repairing EAF bottom. Apart from the refining slag tapping during oxidizing period, slags should be tapped out or into slag ladle after tapping of molten steel. Please pay attention to the following matters:
1.The charging amount of steel srape should be decrease before reparing EAF bottom, try not to charge dolomite.
2.The tapping temperature for the heat before repairing should be 30-70℃ higher than normal tapping temperature.
3.Adjust the fluidity in order to facilitate slag tapping.
4.If there is some slag remaining in the furnace, while waiting for ladle, slag melting for heat preservation should be done, which requires making the electrodes longer to avoid power transmission failure.
5.If the tapping of molten steel is not thorough, use steel billets to adhere the molten steel until there is no molten steel left.
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：Repair of EAF bottom
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/

Refractories in cement industry

Alkaline Refractories 
Alkaline refractory material is available for high temperature calcination,also has superior chemical resistance property, which is a main material for cement kiln to keep high production quality, high yield, low consumption and long-term safe operation. Currently main material for cement kilns include direct-bondedmagnesiachrome brick, semi-direct bonded magnesiachrome brick, ordinarymagnesia chrome brick , dolomite brick, zirconium and zirconium-free special magnesite brick, spinel brick and chemically bonded unburned magnesia chrome brick.
Bricksproperties are listed as follows:
High alumina brick 
High alumina brick has high compressive strength, high refractoriness under load and good thermal shock resistance. Because of its low cost with high quality, it is widely used in varietiesof cement kilns. When to be used in arch crown, calcined alumina brick is better.
High alumina bricks suitable for cement kilns includephosphate bonded alumina brick, phosphate bonded high alumina wear-resistant brick, anti-stripping alumina brick, chemically bound (special) alumina brick and general alumina brick and so on.

Alkali Brick Series
Alkali brick has excellent alkali corrosion performance, under certain conditions, it will react with the alkali compound kiln materials and kiln gas, rapidlyforming enclosed type dense protective enamel layer on the turn, preventingthe continuing internal mixing and bricks "base crack ", which is a indispensable kiln lining material in NSP kiln. This series bricks include ordinary alkali-resistant brick, high-strength alkali-resistant brick, insulation alkali-resistant brick and arch type alkali-resistant brick.
Series refractory castables 
Refractory castables can be produced with simple production process, which is flexible and convenient to be used in the cement kiln system. It has become increasingly common to be applied in the complex structure of cement kiln preheater system. Refractory castables suitable for cement kiln mainly include corundum castable, high alumina castable, alkali-resistant castablesand lightweight castable.
Article Source:Refractories in cement industry
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/

How to compound magnesia refractory mortar

Magnesia refractory mortar is used to masonry magnesia bricks or magnesia-chrome bricks.

Generally, magnesia refractory mortar is supplied in proportion by the supplier, and the builder adds the water glass with a density of 1.41 to 1.44 and can be used as a paste. If mud seams need to be widened, the grain size of magnesite can be properly increased; if the mortar condenses slowly, about 0.5% of Portland cement can be uniformly mixed in the dry powder to promote condensation. But one batch can not be too much to avoid condensation during use. Once condensation, add an appropriate water glass?and mixed, and the mortar could be used again.

Magnesia refractory mortar is prepared at 8% to 10% of the volume of fire bricks used. 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：How to compound magnesia refractory mortar
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/

The application of ceramic fiber blanket

Ceramic fiber blanket is composed of long, flexible, interwoven fibres manufactured by the 'blown' and 'spun' process yielding a strong, lightweight yet durable Ceramic fiber blanket for applications in a temperature range from 1260℃ to 1600℃. Refractory ceramic fiber blanket
has the heat resistance of a hard refractory with five times better insulation value. Ceramic fiber blankets have high tensile strength for longer life and durability.

Ceramic fiber blanket consists of a group of lightweight, thermally efficient ceramic fiber insulating materials that combine the advantages of both low heat storage and complete resistance to thermal shock. Used in a variety of heat processing applications, the ceramic fiber blanket is produced from high strength spun ceramic fibers and is needled to provide exceptional handling strength.

Product advantages:
Low thermal conductivity
Low heat storage
High tensile strength
Thermal shock resistance, sound absorption
Contains no binder, no fumes or furnace atmosphere contamination
No curing or dry out time, lining can be fired to operating temperature immediately

Applications:
Refining and petrochemical
Reformer and pyrolysis furnaces
Tube seals, gaskets and expansion joints
High temperature pipe, duct and turbine insulation
Crude oil heater linings
Metallurgy and mechanism industry
Petrochemical industry and electroceramics

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: Ceramic fiber blanket
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/