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Although our country has rich natural gypsum source, there is few high quality gypsum but a lot of normal gypsum and hard gypsum; some natura…

α desulphurization high strength gypsum is powder cementing material with α type hemihydrate calcium sulfate as main crystal shape, which …

Air conveying is to convey granular materials in a closed pipeline along the direction of the flow using the energy of the airflow, which is …