METHOD FOR CHEMICAL ENRICHMENT OF POLYMETALLIC MANGANESE CONTAINING ORE Russian patent published in 2016 - IPC C22B47/00 C22B3/04 C22B23/00 C01G45/02 

FIELD: metallurgy.

SUBSTANCE: method for chemical enrichment of polymetallic manganese containing ores includes crushing and grinding ore, which is carried out to size of minus 0.125, autoclave leaching from ore elements by mixing it with 18 % solution of iron chloride in ratio 1:9 with further heating to temperature of 475-500 K for 3:00. Obtained after leaching pulp is cooled to 353-363 K and solution is separated from residue. Selective deposition from solution of manganese, nickel, iron and cobalt in form of their compounds. Manganese is deposited with solution of lime milk at pH = 7-8 and T = 298 K, iron - ammonia solution is at pH = 4-5 and T = 298 K, by nickel - calcium hypochlorite solution and lime milk at pH = 10 and T = 298 K, and cobalt - solution of soda at pH = 8-9 and T = 323 K. After deposition of compounds of said elements, precipitate is separated from solution and calcined precipitation of iron compounds, manganese and cobalt.

EFFECT: higher extraction of manganese, nickel, cobalt.

1 cl, 1 dwg, 1 tbl, 1 ex