【摘要】 H₂SO₄-Fe₂（SO₄）₃浸出体系因其具有成本低、腐蚀性较低等特点，被广泛应用于铜精矿的浸出。由于溶液中Fe的形态变化决定着浸出工艺的经济效益，因此针对浸出液中不同条件下的铁形态进行了研究。研究表明，Fe³⁺与Fe²⁺之间的转化主要涉及电子转移，不会改变H⁺浓度；当浸出液pH值达到2时，会产生大量黄钾铁矾沉淀，并夹杂着质量分数为1.0%的Cu和质量分数为0.5%的Zn；当浸出液中Fe²⁺质量浓度超过46.5 g/L时，在常温下会产生FeSO₄·7H₂O结晶，并夹杂着质量分数为1.9%的Cu和质量分数为1.0%的Zn。更多还原

【Abstract】 The H₂SO₄-Fe₂（SO₄）₃leaching system is widely used for the leaching of copper concentrate due to its low cost and low corrosivity.The species change of iron in solution determine the economic benefits of the leaching process.This study investigates the iron species in the leach solution under different conditions on a basis of the process.It has been shown that the conversion between Fe³⁺and Fe²⁺mainly involves electron transfer and does not alter the H⁺concentration.When the pH value of the leach solution rises to 2,a large amount of jarosite will be generated,with Cu of a mass fraction of 1.0%and Zn of a mass fraction of 0.5%.When the concentration of Fe²⁺in the leach solution exceeds 46.5 g/L,heptahydrated ferrous sulphate crystals will be generated at room temperature,with Cu of a mass fraction of 1.9%and Zn of a mass fraction of 1.0%.更多还原