C - Chemistry – Metallurgy – 01 – G
Patent
C - Chemistry, Metallurgy
01
G
23/231
C01G 28/02 (2006.01) B01D 53/34 (2006.01) C01G 28/00 (2006.01)
Patent
CA 1242864
Abstract of the Disclosure In the process for recovering arsenic trioxide from scrubbing water used to scrub the flue gas of sulfide ore smelting, the crude arsenic trioxide crystals collected from the scrubbing solution which contains plaster as an impurity is purified by treating it with hydrochloric acid of a concentration of 50 ~ 150 g/? at a temperature not higher than 30°C.
465424
Asao Haruhiko
Hiroshi Kohno
Kuwabara Masao
Shimizu Takashi
Onahama Smelting And Refining Company Ltd.
Riches Mckenzie & Herbert Llp
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