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WhatsApp: +86 18221755073[0007] For example, gypsum (CaSO4-2H2O) powder, from sources such as rocks of natural gypsum crushed to make gypsum powder or synthetic gypsum made to be a powder, is heated …
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WhatsApp: +86 18221755073The preparation of natural and synthetic gypsum prior to calcination, such as drying and grinding. The various calcination methods for β -hemihydrate and α -hemihydrate are reviewed, such as …
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