Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group va metal or arsenic
Patent
1997-12-09
1998-10-13
Bos, Steven
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group va metal or arsenic
C22B 3000
Patent
active
058209662
ABSTRACT:
The process provides a method of removing arsenic from solutions containing sulfur dioxide in an environmentally acceptable manner. This process first oxidizes arsenic, iron and sulfur dioxide contained in an aqueous solution to prepare the solution for precipitation and to improve process control. Recycled neutralized precipitate seeds the oxidized aqueous solution. A calcium-containing base precipitates products of neutralization on the seeds. The final neutralized precipitate contains a stable ferric arsenate compounds.
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Blakely Brian Charles
Krause Eberhard
Okita Yoshiaki
Raskauskas Justin
Tenbergen Reichel Abelis
Biederman Blake T.
Bos Steven
Inco Limited
Steen Edward A.
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