DISSOLVING METHOD OF METAL NICKEL INTO NICKEL SERIES ZINC PLATING SOLUTION AND APPARATUS THEREFOR

摘要

PROBLEM TO BE SOLVED: To quickly dissolve nickel when directly charging metallic nickel particles into a plating soln. SOLUTION: A nickel series gink plating soln. in a temp. rising tank 3 is raised to 70-100 deg.C by using a heat exchanger 12, and after transferring this galvanizing soln. into a dissolving tank 4, powdery or left-like metal nickel having 1-100μm average grain size is charged into the plating soln. in the dissolving tank 4 and also dissolved under stirring by using an agitator 6 while keeping the plating soln. acidic of pH1-2. The undissolved metal powder remaining in the plating soln. after dissolving is separated and recovered from the plating soln. with a cross flow type filter 7.