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研究了从低品位硫钴精矿焙砂浸出液中钻的富集及其与杂质的分离问题。所研究的浸出液已除去铁、铜，但钻含量仅为1g／L左右的硫酸溶液，而且镁、锌、镍、锰、硅等多种杂质约为钴的10倍左右。在室温下采用吸附剂吸附钴，经盐酸处理，可得钴为13g／L左右的盐酸溶液，排放液中钴小于1mg／L。将该溶液蒸发浓缩，钴进一步富集到20g／L以上，并同时除硅，富钴溶液的总收率达98．7％。随后用叔胺N235萃取分离杂质，所得氯化钴可达工业级标准。
The enrichment of diamonds from the low-grade cobalt-cobalt concentrate calcine leachate and its separation from impurities were studied. The leaching solution has been removed iron, copper, but the drilling content of only about 1g / L of sulfuric acid solution, and magnesium, zinc, nickel, manganese, silicon and other impurities about cobalt about 10 times. Adsorption of cobalt at room temperature using an adsorbent, the hydrochloric acid, available cobalt is about 13g / L of hydrochloric acid solution, the discharge of cobalt less than 1mg / L. The solution was concentrated by evaporation, the cobalt was further enriched to more than 20 g / L, and at the same time the total yield of cobalt-rich solution was 98.7%. Subsequent extraction of impurities with tertiary amine N235, the resulting cobalt chloride up to industrial standards.