| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention can be used for reprocessing of waste nickel-containing acid solutions generated at electrochemical treatment of the copper. The method for reprocessing of water solutions containing the nickel sulphate, sulphuric acid and admixtures includes the three-stage neutralisation with calcium compounds e.g. lime milk and chalk. The first stage of neutraliszation is carried out at pH 1.8-2.0, the second one - at pH 5-6, and the third - at pH more than 8.5. ^ EFFECT: invention allows to simplify the marketable products obtaining from waste nickel-containing acid solutions. ^ 3 cl, 1 dwg, 3 tbl, 14 ex |
