A kind of preparation technology of rare earth concentrate

Abstract

The invention belongs to the technical field of rare earth production, and particularly relates to a preparation process of rare earth concentrate. The preparation process of rare earth concentrate comprises the following steps that the rare-earth tailings are grinded and screened to obtain the rare-earth ore raw powder; magnetic separation is carried out on the obtained rare-earth ore raw powderthrough a magnetic separation device; magnetic separation is performed on the rare-earth ore to carry out acid dissolution, the ratio of the rare-earth ore to the hydrochloric acid is 1: 25, the acid-dissolving temperature is 30-45 DEG C, and the reaction time is 3-5 hours; the mixture is filtered, and then alkali is added into the filtrate to adjust the pH value so as to precipitate the rare earth element in the filtrate to obtain the rare earth concentrate. According to the preparation process, useful elements in the tailings can be extracted to obtain the concentrate, so that the recovery rate of the tailings is improved.

Description

technical field [0001] The invention belongs to the technical field of rare earth production, in particular to a preparation process of rare earth concentrate. Background technique [0002] Due to their unique electronic layer structure and special physical and chemical properties, rare earth elements are widely used in petrochemical, metallurgy, agriculture, ceramics, glass and electronics industries. With the development of science and technology, rare earths are increasingly playing an irreplaceable role in high-tech industries. [0003] Rare earth is the strategic resource of our country, and our country has the most abundant rare earth resource in the world. As an important rare earth mining area in my country, the rare earth reserves rank the highest in the world, and the content of rare earth elements is high and there are many types. Generally, when the mineral resources in the mining area are exploited and utilized, an extremely large amount of tailings will be fo...

AI Technical Summary

Problems solved by technology

As a kind of solid waste, tailings are stacked randomly, which not only pollutes the surrounding environment, endangers the life and health of surrounding residents, but also occupies a large amount of land, consumes funds, and affects the economic benefits of enterprises.

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