【摘要】 在常压下以稀硫酸为浸出剂，工业氧（99%）为助浸剂，采用单因素试验法，研究了硫酸浓度、液固比、温度、氧气流量、反应时间对多金属复杂铜矿中的有价金属铜、铁、锌浸出效果的影响。结果表明：在H₂SO₄浓度1.00 mol/L、液固比12 mL/g、反应温度85℃、氧气流量0.3 L/min、反应时间8 h的较优条件下，铜、铁、锌的浸出率分别为99.97%、32.92%、64.79%,铅的浸出率很低。浸出渣主要由硫酸铅、闪锌矿、黄铁矿、方铅矿及元素硫等组成，并分析了锌和铁浸出率较低的原因。浸出液pH在0.5～0.6,有利于后续浸出液中铜的富集回收。更多还原

【Abstract】 Dilute sulfuric acid and industrial oxygen（99%） were used as leaching agent and leaching aid respectively, under atmospheric pressure to study the effects of sulfuric acid concentration, ratio of liquid to solid, leaching temperature, oxygen flow rate and leaching time on extraction efficiency of valuable metals copper, iron and zinc in polymetallic complex copper ore by single factor experiments.The results show that the leaching rate of copper, iron and zinc is 99.97%,32.92% and 64.79% respectively under the optimum conditions including H₂SO₄ concentration of 1.00 mol/L,ratio of liquid to solid of 12 mL/g, reaction temperature of 85 ℃,oxygen flow rate of 0.3 L/min, and reaction time of 8 h, and the leaching rate of lead is very low.The leaching residue is mainly composed of lead sulfate, sphalerite, pyrite, galenite and elemental sulfur.The reasons for the low leaching rate of zinc and iron are analyzed.The pH value of the leaching solution between 0.5 and 0.6 is found to be beneficial to enrichment and recovery of copper in the subsequent leaching solutions.更多还原