某低品位菱錳礦硫酸浸出—金屬離子雜質(zhì)脫除試驗(yàn)研究
[Abstract]:In order to determine the reasonable exploitation and utilization process of low-grade manganite ore resources, the wet magnetic separation concentrate of a low-grade rhombohedral ore in Guangxi was used as raw material, in which the manganese content of 18.98% and 90.31% existed in the form of manganese carbonate. Acid leaching of sulfuric acid and removal of metal cationic impurity were studied. The results showed that: (1) the optimum conditions for sulfuric acid leaching were as follows: acid ore ratio 0.8, liquid-solid ratio 8 mL / g, leaching time 60 min, at room temperature. The leaching rate of manganese is 93.02%. (2) the impurity of metal ions in the leaching solution can be removed by hydrolytic precipitation and sulphide precipitation. When the amount of Mn O 2 was 3 g / L, the removal rate of iron reached 99.98% at room temperature for 30 min, precipitation of modified pulp pH=5.2~5.5,. The concentration of S2- in the sulphide precipitation part is 5 脳 10-3 mol / L ~ (-1). When 50min is precipitated at room temperature, the concentration of other ions represented by Ni2 can be reduced to less than 1 mg/L.
【作者單位】: 西北礦冶研究院;
【分類號】:TD951
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