The melting point of iron is 1534℃, that is, the temperature of iron liquefaction is 1534℃. The temperature of molten iron ranges from melting point 1534℃ to boiling point 2750℃, just as the temperature of water ranges from 0℃ to 100℃. No matter how good the refractory gypsum is, it can't stand the high temperature of molten iron. ) More basic auxiliary materials can be paid attention to: Le Yi Zhuang.
Ordinary gypsum powder will burn to ashes at 800℃.
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