The selection of the black tungsten ore is generally selected by a plurality of sorting processes of a float-and-heavy combination or a float-heavy-magnetic combination, and the associated elements are recovered in the selected section. The difference in mineral content and type of ore, minerals tungsten, the proportion of sulfide minerals and other factors, each selection period mining mineral sorting process plant there are some differences. In the selected operation, the sulfide ore is generally removed by coarse-grained floating and flotation, the Taifu and the machine-floating sulfide ore are combined into the sulfide ore flotation separation, and the Taifu and the machine-heavy wolframite are further produced by re-election. Tungsten concentrate, if scheelite or cassiterite is contained in the black tungsten concentrate, black tungsten concentrate and white tungsten are selected by a combination process such as re-election-flotation or re-selection-flotation-magnetic separation (electrical selection). Concentrate and tin concentrate.
The selection process of the Yaogang Xianhei tungsten ore dressing plant is shown in Figure 1.
Figure 1 Yaogangxian tungsten ore selection process
Wolframite ore Yaogangxian main metal tungsten ore minerals wolframite, scheelite contain a small amount, the metal associated minerals cassiterite, yellow copper ore, pyrrhotite, galena, sphalerite and the like. At present, the flotation-heavy-magnetic-electric combined beneficiation process is selected. Firstly, the copper is recovered by the platform floatation and the machine floatation desulfurization, the Taifu and the machine floatation sulfide ore. After desulfurization, the tungsten ore is shaken and dry magnetically selected. The black tungsten concentrate is separated, and the magnetic separation tailings are sieved, fine particle flotation, coarse grain electric selection to realize the separation of white tungsten and cassiterite.
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