Mineral processing technology capable of effectively separating tantalum, tin and lepidomelane

Abstract

The invention discloses a mineral processing technology capable of effectively separating tantalum, tin and lepidomelane. A ball mill and a high-frequency screen closed circuit are adopted, so that the grading effect is greatly improved, and the condition that heavy minerals return to the mill again to cause over crushing is avoided; a high-gradient high-intensity magnetic separator is adopted, so that the washability of extremely difficultly separated tantalum minerals is improved, the tantalum and the tin which are equivalent in specific gravity are effectively separated, and the floatation amount of a floatation system is greatly reduced, so that the investment is saved, the production cost is reduced and environment protection is also facilitated. Flux weakening iron removal is adopted before high-gradient high-intensity magnetic separation, so that the interference to mineral processing of valuable minerals such as tantalum and tin due to iron with relatively greater specific gravity can be avoided, and the problem that the high-gradient magnetic separator is blocked can be effectively solved. According to the high-gradient high-intensity magnetic separator, ore concentrate is concentrated by a thickener before entering reselection, the reselection requirement can be met; overflow water of the thickener can be directly used as operation wash water of the high-gradient high-intensity magnetic separator; the workflow can be simplified; and the return water utilization ratio is greatly improved.

Description

technical field [0001] The present invention is an ore dressing process for effectively separating tantalum, tin and iron lepidolite, which mainly relates to an ore beneficiation process for recovering ultra-low-grade tantalum with finer embedded particle size and effectively separating tin and iron lepidolite, belonging to Mining technology field. Background technique [0002] When the feldspar ore contains iron lithium mica and tin, and is accompanied by ultra-low-grade and extremely difficult-to-separate tantalum minerals with fine particles embedded in it, the traditional gravity separation and flotation combined process is adopted. Due to the extremely low grade of tantalum in the raw ore, tantalum Minerals are difficult to effectively enrich and recover; at the same time, all the tailings after gravity separation are put into the flotation process, and the dosage of chemicals is large, which not only complicates the process, makes management difficult, and leads to hig...

AI Technical Summary

Problems solved by technology

[0003] In view of the above status quo, the present invention proposes a beneficiation process that can effectively recover tantalum with extremely low grade and finer particle size, and effectively separate it from tin and iron lepidolite, which can improve the recovery rate of tantalum, tin, and iron lepidolite, Solve the problem of recovering tantalum with extremely low grade and fine particle size, and effectively separate it from tin and iron lepidolite, that is, it can enrich tantalum minerals and iron lepidolite in advance, and at the same time, it can be effectively separated from cassiterite Separation not only improves the utilization rate of extremely low-grade tantalum resources, but also saves investment, reduces production costs, and is conducive to environmental protection

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