B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
182/46
B01D 29/39 (2006.01) B01D 67/00 (2006.01) B01D 71/02 (2006.01)
Patent
CA 1316462
ABSTRACT OF THE DISCLOSURE The invention concerns a method for the manufacture of a plate, in which a gypsum mould is first filled with casting mix. Hereinafter water is absorbed out of the casting mix into the gypsum, and a crust is allowed to remain on the face of the mould. The crust is allowed to develop to appropriate thickness, whereupon the excess casting mix is poured off. After the inside faces of the crust have become dry, the mould is filled with a granular material, which has preferably the same composition as that of the crust material. The invention also concerns a filter plate, which comprises a space placed between filter faces and filled with a granular material. The invention further concerns a suction drier, in which the filter plate is used so that at least one filter plate can be shifted into communication with the material to be dewatered in a basin or equivalent. The apparatus concerned comprises preferably several filter plates, which are fitted about a rotating shaft as a circular structure. A nega- tive pressure is applied to the suction faces of each plate, whereby water or any other liquid is shifted out of the material to be dewatered through the suction faces into the central space and further, drawn by the negative pressure, out of the plate structure.
524545
Marks & Clerk
Outokumpu Oy
LandOfFree
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