Siberian Federal University

The possibility of nickel and copper sorption from pulps after hydrochlorination of poor sulphide Kingash deposit (Russia) was considered. Chelatons ANKB-1 and Purolite-930 were used as the sorbents. Previously, slurry was neutralized to pH ≈ 2,6-2,7 for hydrolytic precipitation of iron (3 +). Shown that both sorbent effectively extract copper and nickel from weakly acid solutions. Magnesium, which was extracted from serpentine by hydrochlorination did not interfere with the extraction. For the extraction of copper and nickel the contacting time of the sorbent with solutions is about 3 hours for model solutions. In the transition to a pulp, sorption rate is significantly reduced, which was associated with the effect of silicic acid. It in appreciable amount leached into solution. To speed the process of extraction it was proposed to carry out the process by heating to 55 °C. ANKB-1 was mechanically unstable and unsuitable for extraction from pulps. Purolite 930 losses by abrasion were 0.019 %/h.