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波兰耐火材料工业总产量的60％为Al_ 2O_3—SiO_2系统耐火材料,这种耐火材料产品的质量取决于原料的质量和加工技术。原料中的Na_2O+K_2O和Fe_2O_3的含量应尽可能地少,因为这些成分将降低耐火度,影响成品的热一机械性能。
60% of the total output of Polish refractories industry is Al_2O_3-SiO_2 system refractories. The quality of such refractories depends on the quality of raw materials and processing technology. The content of Na2O+K2O and Fe2O3 in the raw materials should be as small as possible because these components will reduce the refractoriness and affect the thermal-mechanical properties of the finished product.