Sichuan Dechang Continental Trough Rare Earth Ore Beneficiation Process

Abstract

This is an article in the field of mineral processing engineering. The Mianning-Dechang rare-earth mineralization belt in Sichuan is an important hard-rock-type rare-earth mineralization belt associated with Late Oligocene-Middle Miocene carbonatites in China.Within this metallogenic belt, there are Yakpeng super-large, Continental Trough large, Muluo and Lizhuang medium-sized light rare earth deposits closely associated with nepH值eline quartz orthoclase-carbonate heteroliths; the identified rare earth resource reserves (REO) in this metallogenic belt amount to several million t, which account for 8.73% of the identified resources in the country, and it is an important hardrock-type rare earth resource base in China. The advantage of rare earth resources in the continental trough over the Maoniuping is that the ore body is thick and large, easy to mine, the average grade of REO is 1%～2% higher than that of Maoniuping, and the rare earth distribution rate in the ore endowed with cerium fluorocarbon (CeFc) mineral pH值ase is high, and the amount of ThO2 in Cerium Fluorocarbon (CuFc) is small (Maoniuping 0.18%～0.43%), which is very favorable to the deep-processing and environmental protection. This article is based on rare earth beneficiation production practice, summarizes the different periods of production process on the recovery and utilization of rare earth resources, the continental trough rare earth beneficiation process puts forward new thinking and insights, for the rational use of rare earth resources to provide reference basis.

Keywords

• mineral processing engineering
• continental trough mine
• rare earth
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