C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/115, 23/348
C01B 17/90 (2006.01) B01D 53/34 (2006.01)
Patent
CA 2031229
A process for the reduction in fluoride concentration in a fluoride-contaminated sulphuric acid which process comprises treating said sulphuric acid with a silicon compound to produce silicon tetrafluoride, and removing said silicon tetrafluoride to produce a purer sulphuric acid having a substantially reduced fluoride concentration. The process is of particular use for the removal of fluoride from waste sulphuric acid in the copper smelting industry to meet environmental concerns.
Norval Graeme W.
Przystal Frederick S.
Sturgeoff Lynda G.
Yethon Andrew E.
Chemetics International Company Ltd.
Gowan Intellectual Property
Norval Graeme W.
Przystal Frederick S.
Sturgeoff Lynda G.
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