MANUFACTURING METHOD OF NICKEL OXIDE POWDER

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a nickel oxide powder having a large particle size that is used in an electrode material and the like using nickel sulfate containing a crystallization water as a raw material. SOLUTION: The method for the nickel oxide powder uses two furnaces as manufacturing furnaces, and comprises calcinating the nickel sulfate containing the crystallization water at a first manufacturing furnace to form the anhydrous nickel sulfate and subsequently roasting the anhydrous nickel sulfate at the maximum temperature of 1,250°C or higher while compulsorily blasting an air at a second manufacturing furnace. Then, the nickel oxide powder having a particle size of 1.2μm or more and the sulfur quality level of 50-100 ppm is obtained by controlling the flow rate of the air in the second manufacturing furnace to be 10-20 mm/s. COPYRIGHT: (C)2004,JPO&NCIPI