Study on Atmospheric Pressure Oxidation Acid Leaching Process of Yulong High-iron Copper Concentrate
Taking Yulong high-iron copper concentrate as the research object,copper was recovered from high-iron copper concentrate by atmospheric pressure oxidation acid leaching process.The results of small-scale test showed that the leaching efficiency of copper was 73.2％under the conditions of leaching temperature of 30 ℃,leaching time of 3.0 h,liquid-solid ratio of 1.6:1,iron sulfate dosage of 5％and sulfuric acid dosage of 25％.The results of the enlarged test show that the residual amount of flotation reagents in the high-iron copper concentrate has a great influence on the copper leaching efficiency.In order to improve the copper leaching efficiency,it is necessary to remove the residual flotation reagents after pretreatment before atmospheric acid leaching,and the copper leaching efficiency is 68.35％.
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