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项目 | GL-65 | GL-55 | GL-48 |
Al2O3，% 不小于min | 65 | 55 | 48 |
Fe2O3，% 不大于max | 2.0 | 2.0 | 2.0 |
耐火度，℃ 不低于 | 1800 | 1780 | 1760 |
荷重软化开始温度，℃ 不低于min | 1500 | 1480 | 1450 |
重烧线变化，% 1500℃x2h | 0— -0.2 | 0— -0.2 | 0— -0.2 |
显气孔率，% 不大于 | 19 | 19 | 18 |
常温耐压强度， MPa不小于 | 58.8 | 49.0 | 49.0 |
Properties of products：High alumina bricks for furnaces were mainly made Yangquan Bauxite,being high pressure pressed and sintered in high temperature.Main minerals compositions are mullite and corundum phases.These products were widely used in all parts of furnace lining of their excellent physical/chemical properties in high temperature.
