中南大学学报（自然科学版）2025，Vol.56Issue(5)：1738-1748,11.DOI:10.11817/j.issn.1672-7207.2025.05.003
植酸十二钠对萤石与方解石浮选的影响
Effects of sodium phytate on flotation of fluorite and calcite
摘要
Abstract
Fluorite and calcite are challenging to differentiate through the process of flotation due to the similarity of their surface physicochemical properties.The effect of the addition sequence of sodium phytate(SP)and sodium oleate(NaOl)on the flotation behaviour of the minerals was systematically investigated.The intrinsic mechanism of selective inhibition of the two minerals by SP was subsequently revealed through Zeta potential analysis,infrared spectral characterization and focused beam reflection measurement(FBRM).The results show that the inhibition effect of SP on calcite is stronger than that of fluorite,and the dosing mode of"NaOl+SP"is more effective in achieving the selective separation of the two minerals compared with"SP+NaOl".The chemical adsorption of SP on the calcite surface is stronger than that of fluorite,and the order of addition of chemicals differentially regulates its adsorption behavior.In the fluorite system,the pre-addition of NaOl can weaken the inhibition of SP,while the strong adsorption of SP on the calcite surface is basically unaffected by the order of addition and can effectively hinder the further adsorption of NaOl or even cause the desorption of the adsorbed NaOl.The order of addition of agents significantly alters the aggregation state of mineral particles.In the"NaOl+SP"mode,NaOl preferentially induces the formation of hydrophobic agglomerates of fluorite,while SP exhibits a limited dispersing effect on the particles.In the calcite system,SP dominates the dispersion of particles and inhibits their agglomeration behaviour.The disparity in the adsorption behaviours of SP on the surfaces of the two minerals,and the induced differences in the state of aggregation and dispersion of the mineral particles,contribute to the flotation and flotation separation of fluorite and calcite in the NaOl flotation system.关键词
植酸十二钠/萤石/方解石/油酸钠/浮选分离Key words
sodium phytate/fluorite/calcite/sodium oleate/flotation separation分类
矿业与冶金引用本文复制引用
张艺扬,周伟光,孙伯柠,何徐翰,李维康,彭耀丽..植酸十二钠对萤石与方解石浮选的影响[J].中南大学学报（自然科学版）,2025,56(5):1738-1748,11.基金项目
国家自然科学基金资助项目(52104280) （52104280）
云南省战略金属矿产资源绿色分离与富集重点实验室开放基金资助项目(202205AG070012)(Project(52104280)supported by the National Natural Science Foundation of China （202205AG070012）
Project(52104280)supported by the Open Fund for Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Metallic Mineral Resources) （52104280）
