FIELD: process engineering.
SUBSTANCE: invention relates to production of zinc powder and can be used in production of antirust paints from zinc-containing stock. Zinc, not containing metal oxide admixtures, is heated, melted and evaporated in furnace at boiling temperature and above it in atmosphere of nitrogen. Zinc vapors are transferred via steam line by rarefaction produced by blower and equal to 50-150 Pa and cooled in steam line abrupt-cooling zone to produce powder. Zinc powder, in getting into magnetic trap built in dust duct, downstream of steam line abrupt-cooling zone, is purified of intermetallic compounds. Pure finely-dispersed zinc powder containing 99.95% of metallic zinc and with dispersity of 0.5-5 mcm comes into cyclone to get settled on hopper, while more fine zinc powder is entrapped by sleeve filter mounted downstream of exhaust blower.
EFFECT: higher powder quality, expanded application, perfected production hardware.
4 cl, 2 tbl, 1 dwg
