METHOD FOR MODIFICATION ZINC POWDER Russian patent published in 1994 - IPC

FIELD: metallurgy. SUBSTANCE: method includes warming-up of a zinc powder at 80-150 o C in the presence of hydrogen containing agent such as water in amount of 1.5-12% of the zinc powder mass. The industrial application of the powder produced enables to reduce by 20-25% the metal products galvanizing costs owing to efficient use of zinc and electric energy, and to reduce by 30-35% the costs of cementation zinc sulfate solution purification of cobalt and cadmium owing to reduced zinc powder consumption (by 28.6% ). EFFECT: reduced costs; increased purification degree. 2 tbl