Product Description                                       Â
Refractory clay brick is made of flint clay and fire clay,used for coke oven,hot-blast oven,glass furnace.
High quality refractory fire Clay bricks are used for steel & iron furnace has high refractoriness, good acid and alkali erosion resistance, high temperature strength, thermal shock stability , widely used in difference steel & iron furnace and chemical furnace also cement kiln.
Item | General clay firebricks | Firebricks for blast furnace | Firebricks for hot-blast stove | Firebricks for pouring | Firebricks for the lining of temming ladle | Firebricks for steel pouring | Low pore firebricks |
Brand |   N-2a |   GN-42 |   RN-42 |  JZN-40 |  CN-40 | SN-40 XN-40 KN-40 ZN-40 |   DN-40 |
Al2O3, %   min |   42 |    42 |   42 |    40 |     40 |   40 |   42 |
Fe2O3, % max | -- |   1.7 |    -- |    -- |     -- |    -- |    -- |
Refractoriness (℃) min |  1730 |  1750 |   1750 |   1710 |   1730 |   1710 |   1730 |
Refractoriness under load of 0.2Mpa(℃) min |  1350 |  1430 |  1400 |   -- |   1400 |  1370 (SN-40, KN-40) |   1390 |
Apparent porosity, % max |    24 |    16 |    24 |   17-25 |     19 | 15-23 (SN-40) 22 (KN-40) 15-25(XN-40) 23(ZN-40) |     15 |
ange on reburning, %  |  +0.1  -0.5 1400℃X 2h |     0  -0.3 1450℃ X 2h |     0  -0.4 1450℃X 2h | +0.1 -0.3 1350℃ X 2h |     0  -0.3 1400℃ X 2h |    0  -0.3 1350℃ X 2h   (XN-40) |  +0.1  -0.3 1400℃ X 2h |
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