Local materials
Cheap，durable
Fireproof, heat insulation
Sound insulation
Moisture absorption
Whatsapp：
8615038278221E-mail：
info@rsrefractories.comFireclay brick is also called chamotte brick. It is acidic firebrick. The higher SiO2 content, the stronger acid corrosion resistance. Fireclay brick has certain degree of acid slag corrosion resistance, but its alkaline slag corrosion resistance is not good. Therefore, fireclay brick is usually used as acidic kilns inner lining. The main applications of fireclay bricks are blast furnace, hot blast furnace, glass furnace, carbon furnace, etc.
Blast Furnace Fireclay Bricks Physicochemical Index
|
Item |
GNZ-42a |
GNZ-42b |
|
Al2O3% ≥ |
42 |
42 |
|
Fe2O3 % ≤ |
1.7 |
1.7 |
|
Refractoriness ℃ |
1750~1770 |
1750~1770 |
|
RUL 0.2 Mpa ℃ ≥ |
1450 |
1430 |
|
Reheating linear change(1450℃, 3h) |
0~-2 |
0~-3 |
|
Apparent porosity% |
≤15 |
≤16 |
|
Cold compression strength Mpa ≥ |
58.8 |
49.0 |
Hot Blast Furnace Fireclay Bricks
Hot blast furnace fireclay bricks have good thermal shock resistance, high refractoriness under load temperature, low creep rate . They are mainly used in regenerators, partition wall and so on.
Hot blast furnace clay bricks physicochemical index
|
Item |
RN-42 |
RN-40 |
RN-36 |
|
Al2O3% ≥ |
42 |
40 |
36 |
|
Refractoriness ℃ |
1750~1770 |
1730~1750 |
1690~1710 |
|
RUL 0.2 Mpa ℃ ≥ |
1400 |
1350 |
1300 |
|
Reheating linear change |
(1450℃, 3h)0~-0.4 |
(1350℃, 3h)0~-0.3 |
(1350℃, 3h)0~-0.5 |
|
Apparent porosity% |
≤24 |
≤24 |
≤25 |
|
Cold compression strength Mpa ≥ |
29.4 |
24.5 |
19.6 |
Glass Kiln Fireclay Blocks
Glass kiln fireclay block’s unit weight is no less than 50 kg.
Glass Kiln Fireclay Blocks Physicochemical Index
|
Item |
GCB-40a |
GCB-40b |
|
Al2O3% ≥ |
40 |
40 |
|
Fe2O3 % ≤ |
1.5 |
1.8 |
|
RUL 0.2 Mpa ℃ ≥ |
1450 |
1400 |
|
Reheating linear change(1400℃, 2h) |
0~-0.4 |
0~-0.4 |
|
Apparent porosity% |
≤18 |
≤18 |
|
Cold compression strength Mpa ≥ |
49 |
34.3 |
Fireclay bricks is the most widely used firebricks with the largest output in the world. They are used to build working lining and permanent linings of various kinds of thermal equipment and kilns. For example, fireclay bricks are widely used in blast furnace, hot blast furnace, glass furnace, etc.
Blast furnace fireclay bricks are mainly used at small blast furnace throat, furnace bosh, furnace hearth and furnace bottom, large blast furnace bosh. Blast furnace fireclay bricks have high cold crushing strength, long term furnace load wear resistance, small volume shrinkage at high temperature working condition, so furnace lining integrity can be kept. Besides, blast furnace fireclay brick should have low apparent porosity, low Fe2O3 content, so carbon won’t deposit in pores.
If you need our products please write down any questions, we will reply as soon as possible.
