Product description
The quality of castable fire brick is distinguished by different aluminum content and body density, and the fire resistance of castable fire brick high alumina bricks reaches 1790 ℃. It is also possible to add different ingredients of raw materials to produce different materials and composite refractory bricks.
By adding a certain proportion of phosphoric acid and sintering at low temperature, phosphate bricks can be produced. By adding a certain proportion of silicon carbide, high-temperature sintering can produce silicon molybdenum bricks or silicon carbide bricks. Adding Andalusite and sillimanite of different proportions can produce low creep high alumina bricks. These three Fire brick also distinguish different grades and quality of castable fire brick according to different contents and bulk densities.
Peculiarity of castable fire brick
A. The refractoriness of high refractoriness aluminum brick is higher than that of clay brick and semi-silicon brick, up to 1750~1790℃, which is a high-grade refractory material.
B, The load softening temperature because high aluminum products Al2O3 high, less impurity, the formation of less fusible glass, so the load softening temperature is higher than clay bricks, but because mullite crystallization does not form a network organization, so the load softening temperature is still not high silicon bricks.
C, Slag resistance high aluminum brick Al2O3 more, close to neutral refractory materials, can resist the erosion of acidic slag and alkaline slag, because it contains SiO2, so the ability of alkali slag is weaker than the ability of acid slag.
Physical and chemical index of castable fire brick
|
Items |
Index |
|||
|
/ |
CH-LZ75 |
CH-LZ65 |
CH-LZ55 |
CH-LZ48 |
|
Al2O3%≥ |
75 |
65 |
55 |
48+ |
|
CCS/Mpa ≥ |
54 |
49 |
44 |
40 |
|
Apparent porosity/% ≤ |
23 |
23 |
22 |
22 |
|
Refractoriness under load /℃ ≥ |
1520 |
1500 |
1470 |
1420 |
|
Reheating linear change(1500℃,2h) |
+0.1 -0.4 |
+0.1 -0.4 |
+0.1 -0.4 |
+0.1 -0.4(1450℃.2h) |
|
Refractoriness/℃≥ |
1790 |
1790 |
1770 |
1750 |
Packages:
Factory introduction
Zhengzhou Caihua Kiln Masonry Installation Co., Ltd, be called for short of CH Refractories was founded in 1984, have advanced process equipment and raw material preparation system.
A full set of refractories conventional testing equipment, can ensure the quality before sending to customers.
CH Refractories mainly produce refractory materials for metallurgical, coking, cement industry, electric power industry, chemical and general industrial furnaces. Annual production of a variety of shaped and unshaped refractory materials 120,000 tons. The refractory products exported to Middle east, South America, Middle Asia, Southeast Asia, Africa and other regions.
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Physical and chemical index of Superior clay firebrick
|
Items |
Index |
|||
|
/ |
CH-LZ75 |
CH-LZ65 |
CH-LZ55 |
CH-LZ48 |
|
Al2O3%≥ |
75 |
65 |
55 |
48+ |
|
CCS/Mpa ≥ |
54 |
49 |
44 |
40 |
|
Apparent porosity/% ≤ |
23 |
23 |
22 |
22 |
|
Refractoriness under load /℃ ≥ |
1520 |
1500 |
1470 |
1420 |
|
Reheating linear change(1500℃,2h) |
+0.1 -0.4 |
+0.1 -0.4 |
+0.1 -0.4 |
+0.1 -0.4(1450℃.2h) |
|
Refractoriness/℃≥ |
1790 |
1790 |
1770 |
1750 |
