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

A bastnaesite and mixed rare earth technology, applied in flotation, solid separation, etc., can solve the problems of fluorine pollution, unresearched smelting of mixed rare earth ore with high monazite, etc., and achieve the effect of short process flow and low production cost

Inactive Publication Date: 2009-07-08
武汉工大科技园发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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 pro

Method used

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

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Effect test

Embodiment 1

[0039] One, the preparation method (flotation separation) of the bastnaesite mixed rare earth concentrate containing high monazite, it comprises the steps:

[0040] 1) Grinding: Select the mixed rare earth ore in the northwest of Hubei Province (called bastnaesite mixed rare earth ore with high monazite content, also known as raw ore), and the REO content of the raw ore grade is 1.68%; The bastnaesite mixed rare earth ore is ground into ore powder, and in the ore powder, the bastnaesite mixed rare earth ore with a particle size of -0.074mm accounts for 95% by mass ("-" means less than, and the present invention includes equal to 0.074mm);

[0041] 2) Rough separation: add water to the ore powder for mixing and stirring to obtain ore pulp; wherein the quality of water added is ore powder: water=1:1.3 (that is, the mass concentration of the pulp is 44%); the pulp after the slurry processing is sent to Enter the flotation unit, and add 0.5 kilogram of water glass depressant, 1.2...

Embodiment 2

[0054] One, the preparation method (flotation separation) of the bastnaesite mixed rare earth concentrate containing high monazite, it comprises the steps:

[0055] 1) Grinding: Select the mixed rare earth ore in the northwest of Hubei Province (called bastnaesite mixed rare earth ore with high monazite content, also known as raw ore), the raw ore grade REO content is 1.45%; The bastnaesite mixed rare earth ore is ground into ore powder, and in the ore powder, the bastnaesite mixed rare earth ore with a particle size of -0.074mm accounts for 95% by mass ("-" means less than, and the present invention includes equal to 0.074mm);

[0056] 2) Rough separation: add water to the ore powder for mixing and stirring to obtain ore pulp; wherein the quality of water added is ore powder: water=1:1.4 (that is, the mass concentration of the pulp is 42%); the pulp after the slurry processing is sent to Enter the flotation unit, and add 1.2 kilograms of water glass inhibitors, 1.6 kilograms...

Embodiment 3

[0069] One, the preparation method (flotation separation) of the bastnaesite mixed rare earth concentrate containing high monazite, it comprises the steps:

[0070] 1) Grinding: Select the mixed rare earth ore in the northwest of Hubei Province (called bastnaesite mixed rare earth ore with high monazite content, also known as raw ore), the raw ore grade REO content is 1.83%; The bastnaesite mixed rare earth ore is ground into ore powder, and in the ore powder, the bastnaesite mixed rare earth ore with a particle size of -0.074mm accounts for 95% by mass ("-" means less than, and the present invention includes equal to 0.074mm);

[0071] 2) Rough separation: add water to the ore powder and mix and stir to obtain the slurry; wherein the quality of adding water is ore powder: water=1:1.3 (that is, the mass concentration of the slurry is 44%); the slurry after the slurry treatment is sent to Enter the flotation device, and add 0.7 kilograms of water glass, 1.5 kilograms of collec...

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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...

Claims

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Application Information

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IPC IPC(8): B03D1/00
Inventor 池汝安
Owner 武汉工大科技园发展有限公司
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