有色金属科学与工程2024，Vol.15Issue(6)：911-921,11.DOI:10.13264/j.cnki.ysjskx.2024.06.014
N-双(膦羟甲基)甘氨酸在闪锌矿和方铅矿浮选分离中的应用
Application of N-Bis(phosphonomethyl)glycine in the flotation separation of sphalerite and galena
摘要
Abstract
This study examined the effects of N-bis(phosphonomethyl)glycine(NADMP)on the flotation characteristics of sphalerite and galena using flotation experimentation,contact angle tests,Zeta potential measurements,X-ray photoelectron spectroscopy(XPS),and Density functional theory(DFT),elucidating the selective inhibition mechanism of NADMP towards sphalerite.Results from the flotation tests revealed that the variance in recovery for galena and sphalerite,with a pH setting of 8 and an NADMP concentration of 80 mg/L,surpassed 70%.Surface analysis and simulation results indicated that NADMP chemically adsorbed onto the sphalerite surface by bonding the oxygen atoms in its phosphonic acid functional group's P-O bond with the zinc atoms of sphalerite.In contrast,its interaction with galena surfaces was relatively weak.The contact angle tests further confirmed the NADMP's greater impact on the hydrophobicity of the sphalerite surface.Hence,NADMP exhibits selective depressed effects on the sphalerite.关键词
闪锌矿/方铅矿/NADMP/抑制剂Key words
sphalerite/galena/NADMP/depressant分类
矿业与冶金引用本文复制引用
王子豪,丰奇成..N-双(膦羟甲基)甘氨酸在闪锌矿和方铅矿浮选分离中的应用[J].有色金属科学与工程,2024,15(6):911-921,11.基金项目
云南省优秀青年资助项目(202301AW070018) （202301AW070018）
