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.
The heavy part of the raw materials for the chrome zirconium corundum composite brick is sintered tabular corundum, high-purity chromium oxide, high-purity zircon, and Guangxi white cement.As the main raw material, the light part of the raw material is made of 47 mullite, kyanite, floating beads and coke gemstones as the main raw materials. During molding, a separator is set in the middle of the mold, and heavy materials and light materials are added at both ends. After high pressure molding , finished products made of high temperature sintering.
Calcined alumina is a product obtained by calcining aluminum hydroxide at high temperature to partially or almost completely convert it into aAl2O2.
It is widely used in the lining of the kiln working face which is in direct contact with the flame, and has become one of the research hotspots in recent years.
Refractory castable is a kind of refractory material that does not need to be formed and has good fluidity after being fired and stirred with water.
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