Sulfidation reaction control method

Details Sulfidation reaction control method Sulfidation reaction control method

2006-03-28

2006-03-28

Dunn, Tom (Department: 1754)

Chemistry of inorganic compounds

Sulfur or compound thereof

Binary compound

C423S101000, C423S140000, C423S141000, C423S566100, C423S659000, C423SDIG022

Reexamination Certificate

active

07018605

ABSTRACT:
A method of sulfidation removal of zinc using hydrogen sulfide is provided, desirably at a temperature at 60° C. or lower, wherein in a container that is pressurized at 0.1 MPa or less with respect to atmospheric pressure, by making the pH of the solution 1.5 to 4.0, and the concentration of hydrogen sulfide in gas 2 volume % or greater in equilibrium with the hydrogen sulfide dissolved in the solution, the zinc in solution is removed by sulfidation to 1 mg/liter or less.

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English translation of JP 63-45130, published Feb. 26, 1988.

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