MANUFACTURING METHOD OF FINE NICKEL POWDER

摘要

PURPOSE: A method for manufacturing fine nickel powder with a particle size distribution of 100 to 1000 nm using liquid reaction method is provided. CONSTITUTION: The method includes the steps of reacting a neutralizing agent with one metal precursor selected from (Ni(NO3)2·6H2O), (NiCl2x·H2O) and (NiSO4·6H2O) in aqueous solution to obtain precipitates; solving the precipitates in an organic solvent; treating above slurry at 200 to 300 deg.C under a pressure of 0.1 to 4 MPa to obtain fine metal powder; and extracting the organic solvent from the obtained fine metal powder by using solvents such as ethanol, acetone, isopropyl alcohol a methanol. The method is characterized in that the neutralizing agent is selected from KOH, NaOH and NH4OH; the organic solvent is selected from ethylene glycol, polyethylene glycol and butanediol.