有色金属科学与工程2024，Vol.15Issue(1)：1-7,7.DOI:10.13264/j.cnki.ysjskx.2024.01.001
废加氢催化剂熔炼合金酸浸液中钼、镍萃取分离研究
Separation of molybdenum and nickel from acidic leaching solution of melted alloy of waste hydrogenation catalyst by solvent extraction
摘要
Abstract
Molybdenum and nickel were extracted and recovered from the pressurized oxidation acidic leaching solution of a melted alloy of a waste hydrogenation catalyst by using N235 extraction.This work investigated the effects of SO42‒ concentration,pH value of acidic leaching solution,organic phase composition and V(O)/V(A)ratio on molybdenum extraction and the effects of ammonia concentration and V(O)/V(A)ratio on molybdenum reverse extraction.The results show that the optimal extraction conditions are SO42‒ concentration in the acidic leaching solution of 1.2 mol/L,pH value of the acidic leaching solution of 0.9,organic phase composition(V/V)of 10% N235/15% secoctanol/75% sulfonated kerosene and V(O)/V(A)ratio of 1/1.The extraction rate of single-stage molybdenum reaches 99.80% ,while that of nickel is only 2.35% .The optimal reverse extraction conditions are ammonia of 6 mol/L and V(O)/V(A)ratio of 1/1,and the stripping rate of single molybdenum is up to 90.63% .High-purity products of molybdenum trioxide and nickel nitrate are prepared from raffinate containing Ni and strip liquor containing Mo by subsequent conventional purification and crystallization,thus realizing the recycling of valuable metals from waste hydrogenation catalysts.关键词
废加氢催化剂/钼镍分离/萃取/N235Key words
waste hydrogenation catalyst/separation of molybdenum and nickel/solvent extraction/N235分类
矿业与冶金引用本文复制引用
窦中堃,张家靓,陈永强,王成彦..废加氢催化剂熔炼合金酸浸液中钼、镍萃取分离研究[J].有色金属科学与工程,2024,15(1):1-7,7.基金项目
国家自然科学基金重点资助项目(51834008) （51834008）
