含铟硫酸浸出液中铟的富集

来源期刊:中国有色金属学报2008年增刊第1期

论文作者:俞小花 谢刚 李永刚 刘春侠 刘康

文章页码:121 - 125

关键词:铟;预中和;还原;中和沉铟

Key words:indium; preneutralization; reduction; neutralization for precipitating indium

摘    要:提出从含铟硫酸溶液中富集铟的试验方案:焙砂预中和—硫化锌精矿还原—石灰石中和沉铟。在一定的实验条件下确定各个工序的最佳条件:焙砂用量为理论量的1.3倍,预中和后溶液的酸度大约降至6 g/L;硫化锌精矿的用量为理论量的2.2~2.3倍,还原后溶液中Fe3+的浓度大约降至0.5 g/L;石灰石的用量为理论量的2.0倍,沉铟后溶液中In3+的浓度降至1 mg/L以下。在此最佳条件下,可使沉铟渣中铟的品位达到0.1%以上。

Abstract: The process of calcine preneutralization-zinc concentrate reduction-limestone neutralization for indium precipitation from pressure leaching of zinc concentrate with different indium contents was investigated. Under a certain experimental condition, the optimal condition in every procedure was put forward. The dosage of calcine is 1.3 times of theoretic value, and the concentration of solution is about 6 g/L; the dosage of zinc sulfide mineral concentrate is 2.2-2.3 times of theoretic value, and Fe3+ concentration of solution after reduction is about 0.5 g/L; the dosage of limestone is double of theoretic value, and In3+ concentration of solution after reduction is 1 mg/L. Under this optimal condition, the content of indium sediment from precipitating is more than 0.1%.

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