Black tungsten ore beneficiation technology - selected operations

In the selected section of the black tungsten ore mine, the re-selected wool is subjected to selected operations such as iron removal, desulfurization and desiliconization to obtain tungsten concentrate. In addition to re-election and flotation, magnetic separation and electro-selection are also widely used in the black tungsten selection section, mainly for black tungsten and scheelite , wolframite and cassiterite , scheelite and cassiterite, and iron. Separation of magnetic substances.

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.

Picture 22

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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