Beneficiation method applied to superconduction magnetic separation of rare earth ore

Abstract

The invention discloses a beneficiation method applied to superconduction magnetic separation of a rare earth ore, and aims to solve the technical problems of higher economical loss and resource wastecaused by lower recovery rate of a rare earth resource in a traditional rare earth beneficiation process. The substantial process of the beneficiation method is as follows: firstly, a raw ore of therare earth ore is crushed and grinded; the tailing discarding is performed on the rare earth ore in advance by centrifugal reselection; then, a reselected concentrate is grinded, and a superconductionmagnetic separator is used for superconduction weak magnetic separation to remove high-magnetism mineral impurities; then, superconduction strong magnetic separation is performed to obtain a rare earth rough concentrate; and finally, flotation is performed on the rare earth rough concentrate to obtain a high-grade rare earth concentrate. The beneficiation method greatly improves the sorting precision and efficiency, and reduces consumption of a total flotation medicament and consumption of a water resource through a breakthrough-developed reselection-superconduction magnetic separation-flotation process, so that the energy consumption and the operation cost are reduced, efficient sorting and utilization of the rare earth resource are implemented, and the grade and recovery rate of the rare earth ore are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of mineral separation, in particular to an ore separation method using superconducting magnetic separation in rare earth ore. Background technique [0002] Known as industrial vitamins, rare earths are widely used in petrochemical, metallurgy, textile, ceramic glass, permanent magnet materials and other fields. They are strategic resources for economic and military development. Moreover, my country is a country with large rare earth resources. Take the rare earth resources in Sichuan Province as an example. Sichuan is the second largest rare earth resource province in my country. It is dominated by light rare earths, mainly distributed in Mianning County and Dechang County of Liangshan Prefecture; as of the end of 2011, A total of 4.4043 million tons of rare earth oxide (REO) resource reserves have been identified in Sichuan Province, and a total of 3.2825 million tons of rare earth oxide resource reserves ha...

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a mineral processing method that applies superconducting magnetic separation to rare earth ores. Great economic loss and waste of resources, low processing efficiency, high energy consumption, high separation cost, and easy to cause technical problems of considerable environmental pollution; The separation-flotation process greatly improves the separation accuracy and efficiency, reduces the consumption of the total amount of flotation reagents and water resources, reduces energy consumption and operating costs, and at the same time, the separation index of the process is good and stable. Moreover, the technological process is energy-saving and environmentally friendly, realizing the comprehensive benefits of ecology, and the resource recycling rate is high, realizing the efficient sorting and utilization of rare earth resources, and greatly improving the grade and recovery rate of rare earth ore

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