有色金属科学与工程2024，Vol.15Issue(2)：274-284,11.DOI:10.13264/j.cnki.ysjskx.2024.02.014
褐铁矿型红土镍矿中有价金属的酸浸工艺
Acid leaching process of valuable metals from limonite-type laterite nickel ore
摘要
Abstract
Nickel is a kind of strategic rare metal.To meet the demand for nickel-ferro alloy,producing elemental nickel or nickel alloy from low-grade laterite ore is the main method.In this study,the selective leaching of valuable metals from Indonesian limonite-type laterite nickel ore by hydrochloric acid was investigated.The results showed that the leaching rates of nickel,cobalt,manganese,iron and magnesium were 34.3%,90.67%,64.23%,76.46%and 48.12%,respectively when the concentration of hydrochloric acid was 10 mol/L,the particle size of raw material was 74 μm,the leaching temperature was 353 K,the ratio of solid to liquid was 1:4,and the leaching time was 120 min.Hydrochloric acid as an industry byproduct is easy to recycle and regenerate.The leaching kinetics of nickel,cobalt and manganese showed that their leaching process did not conform to the widely used shrinkage core model.However,the Avrami equation had a good linearity.According to the Arrhenius formula,the apparent activation energies of nickel,cobalt and manganese in the leaching process were 7.96,4.00 and 4.98 kJ/mol,respectively.The activation energies of all three elements were in the range of 4～12 kJ/mol,and the influence of leaching temperature on the reaction rate constant was not obvious.Therefore,the leaching process of nickel,cobalt and manganese is controlled by diffusion.This study can provide a theoretical reference for the efficient development and utilization of limonite-type laterite nickel ore.关键词
红土镍矿/常压酸浸/矿相/动力学Key words
laterite nickel ore/atmospheric acid leaching/mineral phase/kinetics分类
矿业与冶金引用本文复制引用
王燕,欧阳剑,龚禹,杨洋,王瑞祥,徐志峰,李金辉..褐铁矿型红土镍矿中有价金属的酸浸工艺[J].有色金属科学与工程,2024,15(2):274-284,11.基金项目
国家自然科学基金资助项目(51974140,52064018) （51974140,52064018）
国家重大项目研发计划资助项目(2019YFC1908404,2019YFC1908405) （2019YFC1908404,2019YFC1908405）
江西省高等学校井冈学者特聘教授岗位资助项目 （）
江西省科技厅重大项目(20192ACB70017) （20192ACB70017）
国家级大学生创新创业训练计划项目(202110407004X) （202110407004X）
