Abstract
In this paper,using methyl cinnamate as raw material,the new cinnamic hydroxamic acid collector(CIHA)was synthesized by the hydroxylamine method.The collector performance of hydroxamic acid was investigated for scheelite and gangue calcite,and the flotation separation test of scheelite and calcite was carried out with CIHA as the collector.The interaction mechanism between hydroxamic acid and scheelite minerals has also been investigated through zeta potential,Fourier transform infrared spec-troscopy(FTIR)experiments,X-ray photoelectron spectroscopy(XPS)experiments,and density func-tional theory(DFT)calculation.The single mineral flotation test and artificially mixed ore showed that CIHA had an excellent collection effect and selectivity.Zeta potential,FTIR,and XPS showed that CIHA was adsorbed on the scheelite surface by strong chemical adsorption.The active group of CIHA was ana-lyzed through quantum chemical calculation.It was speculated that C=O and N-O bonds could synthe-size a five-membered chelated hydroxamic acid group with Ca element chelate on scheelite surface,changing hydrophobicity and making it more likely to emerge from the pulp.
基金项目
National Nature Science Foundation of China(51774152)
Jiangxi Provincial Education Department(GJJ200816)
Double height project in Jiangxi province([2022]223)
National Nature Science Foundation of China(52264023)
NETL
NSTL
维普
万方数据