C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
53/240
C01F 7/06 (2006.01) C01F 7/46 (2006.01) C01F 7/47 (2006.01)
Patent
CA 1150517
ABSTRACT OF THE DISCLOSURE The invention relates to anew method of reducing the organic substance content of alum earth production cycle performed according to the Bayer technology. By the method of the invention the majority of the organic substances present in the circulating lye can be removed easily and with only slight losses in sodium content. According to the invention one proceeds so that soda present in the hydrate wash and/or in the soda salt solution is caustified with lime, the solution is evaporated to reach a total sodium oxide concentration of 200 to 400 g/l, the precipitated solid is separated and removed from the system, and the liquid is recycled.
363548
Matyasi Jozsef
Nee Everling Losonczi Marta
Nee Homostrei Toth Maria
Nee Kelemen Orban Maria
Revesz Laszlo
Fetherstonhaugh & Co.
Magyar Aluminiumipari Troszt
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