【摘要】 研究了采用中和沉淀法脱除粗质Ni SO₄溶液中的杂质Al³⁺的方法。用Ca O作中和除Al³⁺剂，考察了Ca O用量，反应终点p H值，反应温度，搅拌转速等因素对粗质Ni SO₄溶液中Al³⁺脱出率的影响。试验结果表明：在Ca O加入量为Al³⁺摩尔理论总量的5倍，终点p H值5.0～5.5，反应时间为1 h，温度为（80～90）℃，搅拌转速为300 r/min，达到终点p H值并稳定0.5 h条件下，Al³⁺脱除率大于99%;Ni³⁺损失率小于1.5%。更多还原

【Abstract】 It is studied the removal method for impurities Al³⁺in crude Ni SO₄solution by using of neutralization precipitation method.Ca O has been taken as neutralizer for remover of Al³⁺,the dosage of Ca O,p H value of reaction endpoint,reaction temperature,stirring speed and the other factors have been investigated to research the effect on removal rate of Al³⁺of crude Ni SO4 solution.Test results show:the addition amount of Ca O was five times of Al³⁺Mole theory total amount,p H value of endpoint was 5.0～5.5,reaction time was 1 h,temperature was （80～90）℃,stirring speed was 300 r/min,when the p H value of endpoint was reached and stable for 0.5 h,the removal rate of Al³⁺was more than 99%,the loss rate of Ni²⁺was less than 1.5%.更多还原