Floatation separation method for mengite and hamartite in misch metal ore concentrate

Abstract

The invention relates to a method for the flotation separation of a collective rare earth ore, in particular to a method for the flotation separation of monazite and bastnaesite of a collective rare earth ore concentrate. The method is characterized by comprising the following steps: an aluminium sulphate inhibitor, a hydroximic acid collecting agent and a frothing agent are used as floating agents, and bastnaesite collective rare earth ore concentrate with the high content of monazite is processed at a temperature ranging from 18 to 30 DEG C; first-stage roughing parisite rough concentrate and first-stage roughing monazite rough concentrate are obtained by first-stage separation and rougher flotation; the first-stage roughing parisite rough concentrate is processed by the operation of second-stage close sizing to obtain second-stage close sizing bastnaesite concentrate; the first-stage roughing monazite rough concentrate is also processed by the operations of size mixing and second-stage close sizing to obtain second-stage close sizing parisite concentrate; and the first-stage roughing monazite rough concentrate is processed by the operations of size mixing and second-stage close sizing to obtain second-stage close sizing monazite concentrate. High grade single monazite concentrate and single bastnaesite concentrate can be produced by the separation roughing and the flotation operation of the respective close sizing of the first-stage roughing parisite rough concentrate and the first-stage roughing monazite rough concentrate. The method has the advantages of simple process and low production cost, and can produce the high grade single monazite and the single bastnaesite.

Description

technical field [0001] The invention relates to a flotation separation method of monazite and bastnaesite of mixed rare earth concentrate. Background technique [0002] my country is a country rich in rare earth resources, not only rich in rare earth resources, accounting for 67% of the world's rare earth resources; but also has a complete range of minerals, including southern weathering crust leaching type rare earth mines, Baiyun Obo mixed rare earth mines, Sichuan single bastnaesite and Weishan single Bastnaesite. Mineral-type rare earth ores mined and utilized in the world at present mainly include single bastnaesite, monazite and mixed rare earth ores in which bastnaesite and monazite coexist. When designing the recycling process for mixed rare earth ores, two or more types of rare earth minerals are usually recovered at the same time to produce mixed rare earth ores, such as the mixed rare earth ores produced in Baiyun Obo in my country and the mixed rare earth ores in...

AI Technical Summary

Problems solved by technology

Although the sulfuric acid smelting process of mixed rare earth ores with high bastnaesite content has been applied and practiced in production, the fluorine pollution is relatively serious, but the smelting of mixed rare earth ores with high monazite has not been studied

Images