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目前,坩埚炉炉衬采用的水泥(见表)可分为三类.第一类为非耐高温的水泥,耐火度为~1280℃.这一类水泥含~40%矾土和大量三氧化二铁.第二类为半耐火水
Currently, the cement used in the crucible furnace lining (see table) can be divided into three categories: The first category is non-heat-resistant cement with a refractoriness of ~ 1280 ° C. This class of cement contains ~ 40% alumina and a large amount of trioxide Iron. The second category is semi-fire-resistant water