ZINC WHITE PRODUCTION APPARATUS Russian patent published in 1998 - IPC

FIELD: paint-and-varnish industry, in particular, production of inorganic coloring agents. SUBSTANCE: apparatus has heating furnace with zinc pig loading opening 1, melting chamber 2, evaporative chamber 3, oxidizing chamber 4. Melting chamber 2 and evaporative chamber 3 are communicated one with another through channel with inlet opening positioned above metal surface in evaporative chamber 3. Evaporative chamber 3 is communicated with oxidizing chamber 4 via channels 8. Melting chamber 2 is equipped with wall and bath with portions arranged at different levels. Evaporative chamber 3 has bath with troughs. One trough is communicated with opening for supplying molten zinc into chamber 3 and other trough is communicated with contaminated zinc discharge opening. Evaporative chamber 3 is equipped with wall dividing the chamber into two zones: lower zinc evaporation zone and upper flue gas zone. Unit has openings 20 provided with nozzles. EFFECT: increased efficiency and improved quality of coloring agent. 5 dwg