Froth flotation of scheelite – A review  

作　　者：Nathalie Kupka Martin Rudolph 

机构地区：[1]Helmholtz Zentrum Dresden Rossendorf (HZDR), Helmholtz Institute Freiberg for Resource Technology (HIF)

出　　处：《International Journal of Mining Science and Technology》2018年第3期373-384,共12页矿业科学技术学报（英文版）

基　　金：the financial support of the Optim Ore project;the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 642201

摘　　要：Froth flotation of scheelite has regained new focus since the 2010s and research regarding floatability and reagents has made great progress over the years. The main objective was and remains the selective flotation of scheelite from other calcium-bearing minerals, in particular calcite, fluorite and apatite. Due to similar properties, most attempts have limited success or only specific application(linked to a type of ore or a location). This article aims at reviewing all general physical-chemical information on froth flotation of scheelite, including electrokinetic properties, influence of p H and already existing reagents as well as ones still under examination. It appears that chelating or mixed collectors and modified versions of sodium silicate and quebracho hold great promise for scheelite flotation, while the use of said depressants and/or promoters seems inevitable.Froth flotation of scheelite has regained new focus since the 2010s and research regarding floatability and reagents has made great progress over the years. The main objective was and remains the selective flota-tion of scheelite from other calcium-bearing minerals, in particular calcite, fluorite and apatite. Due to similar properties, most attempts have limited success or only specific application （linked to a type of ore or a location）. This article aims at reviewing all general physical-chemical information on froth flota-tion of scheelite, including electrokinetic properties, influence of pH and already existing reagents as well as ones still under examination. It appears that chelating or mixed collectors and modified versions of sodium silicate and quebracho hold great promise for scheelite flotation, while the use of said depres-sants and/or promoters seems inevitable.

关 键 词：SCHEELITE Froth flotation Calcium-bearing minerals Selectivity challenges Promising reagents 

分 类 号：TD923[矿业工程—选矿] TD954