湿法冶金
濕法冶金
습법야금
HYDROMETALLURGY OF CHINA
2014年
4期
301-304
,共4页
α-亚硝基-β-萘酚钴渣%亚硫酸钠%盐酸%沉淀%浸出%氧化钴
α-亞硝基-β-萘酚鈷渣%亞硫痠鈉%鹽痠%沉澱%浸齣%氧化鈷
α-아초기-β-내분고사%아류산납%염산%침정%침출%양화고
cobalt residue%α-nitroso-β-naphthol%sodium sulfite%hydrochloric acid%precipitation%leaching%cobalt
研究了以混合二甲苯为溶剂，亚硫酸钠为还原剂，从α-亚硝基-β-萘酚钴渣中溶解并沉淀亚硫酸钴，再用盐酸浸出得到氯化钴溶液。试验结果表明：每15．12g钴渣需混合二甲苯200mL，亚硫酸钠3．27g，蒸馏水40mL，还原回流时间2h，浸出剂为1．0mol/L盐酸25mL，浸出时间约1h；最佳条件下，钴的单次浸出率为87．48％；氯化钴溶液经 H2 O2氧化除铁、P204萃取除杂得到纯度较高的钴溶液，用草酸铵沉淀并煅烧后制得氧化钴产品。
研究瞭以混閤二甲苯為溶劑，亞硫痠鈉為還原劑，從α-亞硝基-β-萘酚鈷渣中溶解併沉澱亞硫痠鈷，再用鹽痠浸齣得到氯化鈷溶液。試驗結果錶明：每15．12g鈷渣需混閤二甲苯200mL，亞硫痠鈉3．27g，蒸餾水40mL，還原迴流時間2h，浸齣劑為1．0mol/L鹽痠25mL，浸齣時間約1h；最佳條件下，鈷的單次浸齣率為87．48％；氯化鈷溶液經 H2 O2氧化除鐵、P204萃取除雜得到純度較高的鈷溶液，用草痠銨沉澱併煅燒後製得氧化鈷產品。
연구료이혼합이갑분위용제，아류산납위환원제，종α-아초기-β-내분고사중용해병침정아류산고，재용염산침출득도록화고용액。시험결과표명：매15．12g고사수혼합이갑분200mL，아류산납3．27g，증류수40mL，환원회류시간2h，침출제위1．0mol/L염산25mL，침출시간약1h；최가조건하，고적단차침출솔위87．48％；록화고용액경 H2 O2양화제철、P204췌취제잡득도순도교고적고용액，용초산안침정병단소후제득양화고산품。
Using mixed xylene as solvent ,sodium sulfite as reducing agent ,cobalt in α-nitroso-β-naphthol cobalt residue was dissolved and precipitated as cobalt sulfite .Then the precipitation was leached using hydrochloric acid to obtain cobalt chloride solution .The results show that cobalt of leaching from 15 .12 g cobalt slag ,it is need that mixed xylene of 200 mL ,sodium sulfite of 3 .27 g , water of 40 mL .Under the optimum leaching conditions of reduction reflux time of 2 h ,hydrochloric acid(1 .0 mol/L ) of 25 mL ,leaching time of 1 h ,one-stage leaching ,leaching of cobalt is 87 .48% . Cobalt chloride solution was purified by using hydrogen peroxide to remove iron ,and P204 to eliminate other impurities .The cobalt product is obtained using ammonium oxalate to precipitate from purified cobalt chloride solution and by calcination process .
