Rheological investigations of the improved fine scheelite flotation spiked with agitation medium  

作　　者：Wei Chen Guofan Zhang Yangge Zhu 

机构地区：[1]College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China [2]State Key Laboratory of Mineral Processing,BGRIMM Technology Group,Beijing 100160,China [3]School of Mineral Processing and Bioengineering,Central South University,Changsha 410083,China

出　　处：《International Journal of Mining Science and Technology》2022年第6期1379-1388,共10页矿业科学技术学报（英文版）

基　　金：support of the National Natural Science Foundation of China(Nos.51904221 and 51774041);the Natural Science Foundation of Hunan Province,China(No.2022JJ40594).

摘　　要：The fine scheelite flotation using garnet and glass beads as agitation medium was investigated through slurry rheology and froth property analysis. The apparent viscosity of fine scheelite, calcite and quartz(-20 μm) slurry were measured and the corresponding scheelite flotation behaviours, froth water recovery and froth height were studied. It was found that calcite slurry could aggregate into network structures and exhibit much higher apparent viscosity at the vicinity of pH 8.5–9.0 than scheelite and quartz(scheelite, calcite, and quartz slurry at 20.34, 38.66, and 14.58 mPa·s, respectively). Agitation medium containing garnet and glass beads could reduce the slurry apparent viscosity by effectively dispersing the calcite network structures in flotation slurry, and improve the fine scheelite flotation selectivity. As the apparent viscosity was reduced, the froth water recovery decreased from 24.33% to 6.37% and initial froth height of the flotation froth decreased from 69.6 to 8.7 mm, and finally results in increase in separation efficiency from 23.10% to 31.96%. The results could be potentially used in flotation of fine minerals by applying agitation medium to improve the process selectivity.

关 键 词：Rheology FLOTATION Fine scheelite Agitation medium 

分 类 号：TD954[矿业工程—选矿] TD923