PRODUCING METHOD OF COPPER SULFIDE POWDER, AND COPPER SULFIDE POWDER

摘要

PROBLEM TO BE SOLVED: To provide a producing method of a copper sulfide powder having an excellent ability to recover heavy metals in wastewater.;SOLUTION: The producing method of the copper sulfide powder includes a copper sulfide particle forming step in which a copper sulfide particle is formed by a reaction of a copper salt, whose mixed solution pH is higher than 7.0 when mixed with purified water, and a sulfide ion source substance, in an aqueous reaction medium and under existence of polyacrylic acid or a salt thereof. Specifically, the copper salt is at least one of basic copper carbonate and copper hydroxide, the sulfide ion source substance is sodium hydrogen sulfide, and the polyacrylic acid salt is an alkali metal salt of polyacrylic acid.;SELECTED DRAWING: None;COPYRIGHT: (C)2020,JPO&INPIT