Production method of brown corundum and the advantages of fine crushing and shaping
The production method of brown corundum, after arc melting, cooling, waste separation, crushing, wind separation, screening, etc., is characterized by:
a. Raw materials are aluminum ash waste;
b. Wash the aluminum ash waste with water until the PH value of the washing water is 6-7.
c. The washed aluminum ash waste is dried at a temperature of 200 to 800 ° C to a moisture content of less than 1%.
d. In the arc smelting process, dry alumina ash is added with 0.5 to 1% of brown alumina corundum seed crystals and mixed, and then smelted at a temperature of 1,900 to 2,500 ° C.
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