FIELD: metallurgy; extraction of nickel, cobalt and associated metals from solutions obtained at alkali leaching of oxidized (lateritic) ores; production of nickel, cobalt, manganese and magnesium from these solutions.
SUBSTANCE: starting solution is neutralized to pH=5.0-5.5 by magnesium carbonate or oxide for precipitation of iron and aluminum and pulp thus obtained is thickened. Nickel and cobalt are sorbed from overflow of thickening agent and thickened pulp; solution is separated from sediment in thickened portion of pulp and is combined with overflow cleaned from nickel and cobalt, after which manganese and magnesium are separated from combined solution.
EFFECT: reduced losses of resin; facilitated procedure of extraction of nickel and magnesium.
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