Method for improving grades of fluorite ore concentrate and rare earth ore concentrate of baiyuneboite through high-gradient superconducting magnetic separation

Abstract

The invention relates to a method for improving grades of fluorite ore concentrate and rare earth ore concentrate of baiyuneboite through high-gradient superconducting magnetic separation. Fluorite ore concentrate graded from baiyuneboite is subjected to magnetic separation through a high-gradient superconducting magnetic separator by a high-gradient superconducting magnetic separation technology,so that the grade of CaF2 in the fluorite ore concentrate is improved to 90-99%, a mineral separating index of fluorite of the baiyuneboite is improved, and rare earth enrichment is obtained at the same time. The superconducting magnetic separation method is similarly suitable for rare earth ore concentrate products in the baiyuneboite, the grade of REO in the rare earth ore concentrate is improved to be more than 60%. According to the high-gradient superconducting magnetic separation technology, the simpleness and the high efficiency are realized, the occupied area is small, the power consumption is small, the cost is low, no chemical agent is used, water is directly recycled, and the environmental friendliness is achieved; and according to the method for improving the grades of the fluorite ore concentrate and the rare earth ore concentrate of the baiyuneboite through the high-gradient superconducting magnetic separation, the concentrate grades of the fluorite ore concentrate and the rare earth ore concentrate of the baiyuneboite are greatly improved, and the technical problems that the grade of the fluorite ore concentrate sorted from the baiyuneboite is low and the inclusion content of weak magnetic mineral rare earth is high are effectively solved.

Description

technical field [0001] The invention relates to the technical field of sorting and separating valuable minerals such as fluorite and rare earth in Baiyun Obo Mine, in particular to a method for improving the grade of fluorite concentrate and rare earth concentrate by high-gradient superconducting magnetic separation. Background technique [0002] Fluorite is the main source of fluorine, according to the CaF in fluorite 2 The amount of content can be divided into different grades. Acid grade fluorspar requires CaF 2 The content is more than 97%. It is mainly used in the production of hydrofluoric acid in the chemical industry. Hydrofluoric acid can be used to synthesize fluorine monomers, organic fluorides or inorganic fluorides, which are used in refrigeration, medicine, aerospace, defense industries and other fields; ceramic grade fluoride Stone Requirement CaF 2 The content is 85-95%, mainly used in building materials, glass, ceramics and other industries; metallurgical...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem in the prior art that the fluorite concentrate produced by the Baiyan Obo Mine contains a large amount of rare earth minerals and iron-containing impurity minerals, which seriously affects the grade of the fluorite concentrate, the present invention provides a high-gradient superconducting magnetic separation to improve the fluorite concentration of the Baiyan Obo Mine. The method of fluorite concentrate grade, through high-gradient superconducting magnetic separation, magnetic separation of fluorite, rare earth minerals and iron-containing impurity minerals in fluorite concentrate, a process for improving the grade of fluorite concentrate

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