Process for removing arsenic compounds from hydrogen fluoride

Details Process for removing arsenic compounds from hydrogen fluoride Process for removing arsenic compounds from hydrogen fluoride

C - Chemistry, Metallurgy

01

G

C01G 28/00 (2006.01) C01B 7/19 (2006.01)

Patent

CA 2351746

The invention relates to a novel process for removing arsenic compounds from the distillation bottoms from hydrogen fluoride distillation in which the distillation bottoms are first concentrated by evaporation of hydrogen fluoride until the temperature at the bottom is from 40 to 60°C, and the residue is then reacted with calcium hydroxide, calcium oxide, or a mixture thereof to give, in a simple manner, a product capable of disposal in a landfill.

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