Method for purifying and removing cobalt by spraying and blowing zinc powder

The invention relates to a method for purifying and removing cobalt by spraying and blowing zinc powder, and belongs to the field of zinc hydrometallurgy. The method comprises the following steps: (1) adding water to dissolve copper sulfate to prepare a copper sulfate aqueous solution; (2) adding water to dissolve or pulpify the antimony salt to prepare an antimony salt aqueous solution or antimony salt ore pulp; and (3) firstly adding a copper sulfate aqueous solution and an antimony salt aqueous solution or antimony salt ore pulp into the cobalt removal pre-solution, and then adding injection zinc powder. According to the method, low-activity injection-method zinc powder is used during cobalt removal, the addition amount of copper sulfate is increased, deep cobalt removal is also achieved, the technical prejudice that in the prior art, during cobalt removal, Cu < 2 + > cannot exceed 10 mg/L, and deep cobalt removal can be achieved only by using high-activity zinc powder is overcome, cobalt can be removed to