矿产保护与利用2024，Vol.44Issue(1)：40-45,6.DOI:10.13779/j.cnki.issn1001-0076.2024.01.005
微细鳞片石墨纳米气泡浮选与传统浮选的对比研究
Comparative Study of Nanobubble Flotation and Traditional Flotation for Micro-fine Flake Graphite
摘要
Abstract
With the depletion of large flake graphite resources,micro-flake graphite resources will be the main graphite resources in the future,and it is imperative to develop micro-scale graphite ore separation technology.This work mainly investigated the effect of nanobubbles on the strengthening flotation behavior of fine flake graphite in order to achieve efficient recovery of micro-fine flake graphite.The differences between nanobubble flotation and conventional flotation were studied by flotation kinetics,laser particle size analyzer,Zeta potentiometer and contact angle analyzer.The results showed that the nano-bubble flotation time was 25 seconds earlier to complete the flotation of fine flake graphite compared with the traditional flotation.The recovery and carbon content of nanobubble flotation concentrate were 92.91%and 73.40%,respectively,which were about 5 percentage points and 1 percentage point higher than that of traditional flotation concentrate.The results of laser dynamic analysis of pulp showed that nanobubbles can effectively aggregate micro-fine flake graphite,increased its apparent size and improved the flotation effect.The results of particle size analysis of concentrate showed that nanobubbles can recover the micro-fine flake graphite below 10 μm which can not be recovered effectively by traditional flotation,thus improving the recovery of concentrate flotation.The contact angle analysis results showed that the surface contact angle of the nanobubble flotation concentrate was 6.92° higher than that of the traditional flotation concentrate,so the surface hydrophobicity of the graphite was improved.The Zeta potential test results showed that the nanobubbles reduced the electrostatic repulsion between the particles of micro-fine flake graphite,which was conducive to the stable aggregate structure of microscale graphite to improve the flotation probability.关键词
微细鳞片石墨/纳米气泡/粒度/浮选行为Key words
micro-fine flake graphite/nanobubbles/particle size/flotation behavior分类
矿业与冶金引用本文复制引用
李明娇,南楠,马芳源,李湘微,王睿,张迪,唐崇亮..微细鳞片石墨纳米气泡浮选与传统浮选的对比研究[J].矿产保护与利用,2024,44(1):40-45,6.基金项目
辽宁省教育厅高等学校基本科研项目(LJKQZ20222340) （LJKQZ20222340）
辽宁科技大学博士启动基金 （）
辽宁科技大学大学生创新创业训练计划项目经费 （）
