Method of preparing gypsum articles

B - Operations – Transporting – 22 – C

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B22C 9/02 (2006.01) C04B 28/14 (2006.01)

Patent

CA 1135291

ABSTRACT Plaster products can be prepared from calcium sulfate dihydrate by adding to a water slurry of potassium sulfate dihydrate a potassium salt, especially potassium hydrogen- carbonate or potassium tetraborate but, in the first place, potassium sulfate, including a carrier, after which the water slurry is moulded and further worked in known manner to the desired plaster products, especially plaster board or moulds for the production of metal articles or ceramic articles.

331682

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