| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a fine nickel powder that is used as seed crystals suitable for the production of nickel powder from a solution containing sulfuric acid nickel ammine complex.SOLUTION: There is provided a method for producing nickel powder characterized in manufacturing a nickel powder by going through a mixing step for adding, to a solution containing sulfuric acid nickel ammine complex, a dispersant that contains sulfonate, and an insoluble solid that is insoluble in the solution, to form a mixed slurry, a reduction-and-deposition step for charging the mixed slurry into a reaction tank and followed by blowing of hydrogen gas into the mixed slurry in the reaction tank, to reduce the nickel complex ion contained in the mixed slurry and form a nickel deposit on a surface of the insoluble solid, and a separation step for separating the nickel deposit on the surface of insoluble solid from the surface of the insoluble solid to form the nickel powder, in this order. |
