Special Acid-proof Brick
Lightweight acid-proof Brick
Acid resistant brick is the ideal choose for your project with their features of proof pressure, corrosion resistance, easy to clean and acid-base resistance.
Acid-resistant bricks for coke ovens
Product features:
Acid-resistant bricks have the properties of anti-permeability ,anti-freezing, salt resistance,alkali resistance and week acid corrosion,and have strong adhesion to a variety of materials, it can be constructed on the surface of damp substrate without drying.It can be hardened in humid environment or under water. Easy operation and construction,similar to ordinary cement mortar construction ,easy cleaning ,water can be cleaned .In industry, it is mainly used in acid ditch. acid well ,acid storage and-loaded ground.
|
index |
Special acid-resistant brick |
Lightweight acid-resistant brick |
|
SiO2%≥ |
65 |
65 |
|
Bulk density g/cm3 BD |
1.6-1.8 |
1.0-1.3 |
|
Compressive strength CCS Mpa≥ |
15 |
10 |
|
Thermal Conductivity w/m.k (350℃±25℃）≤ |
0.65 |
0.45 |
|
water absorption%WR≤ |
15 |
|
|
Acid resistance%APR≥ |
98 |
97 |
|
long-term operating temperature℃HR＜ |
1000 |
950 |
|
characteristic |
Good acid resistance, small volume change, and significant corrosion resistance and corrosion resistance |
|
|
Application area |
flue, chimney lining, etc. |
|
Silica brick is an acidic refractory mainly composed of tridymite, cristobalite and a small amount of residual quartz and glass phases
Silica brick: an acidic refractory mainly composed of tridymite, cristobalite and a small amount of residual quartz and glass phases. Its silica content is more than 94%, it has anti-acid slag erosion performance, high high temperature strength, high load softening temperature, long-term use in high temperature flower wells without deformation, but low thermal shock stability (heat exchange in water is 1-4 Second-rate).
Silica bricks for coke ovens are siliceous refractory products used for building coke ovens with tridymite as the main crystal phase. Coke oven silica bricks are used to build regenerator walls, ramps, combustion chambers, carbonization chambers and furnace roofs of coke ovens. Silica brick is an acid refractory material with good resistance to acid slag erosion. The softening temperature under load is as high as 1640-1670 °C, and the volume is relatively stable in long-term use at high temperature.
Coke furnace silicon bricks are mainly used in the heat storage room, oblique road, charcoal room, combustion room, top of the furnace, and bottom of the furnace.
Ceramic wear resistant castable is a special material and is a new type of material developed recently. It not only meets the needs of national defense cutting-edge products and high-tech development, but also meets the requirements of the rapid development of the national economy. Therefore, it is easier for users to accept than other materials, so it develops rapidly.
Corundum refractory castable has the characteristics of high strength and good fluidity, which is convenient for construction. It is mainly used for the parts that are easy to be washed and worn, such as the combustion chamber, separator and flue of circulating fluidized bed boiler.
The refractoriness of clay bricks is comparable to that of silica bricks, up to 1690~1730℃, but the softening temperature under load is more than 200℃ lower than that of silica bricks. Because in addition to the high refractory mullite crystal, the clay brick also contains nearly half of the low melting point amorphous glass phase.
Converter, electric furnace gunning material has the characteristics of high adhesion rate, good high temperature corrosion resistance, etc.
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