Complex multi-metal rare earth ore beneficiation separation and enrichment method

A separation enrichment and multi-metal technology, applied in the field of mineral processing, can solve the problems of increasing the difficulty of hydrometallurgy separation, and the grade cannot reach the metallurgical concentrate, so as to achieve the effect of reducing the amount of ore, reducing the content and improving the quality

Active Publication Date: 2020-08-14
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The mine has been discovered for decades, and scholars at home and abroad have carried out a lot of work on the development and utilization of the mine. After beneficiation, rare earth concentrates, niobium concentrates, and zirconium concentrates have been obtained. However, due to the complex occurrence of useful elements in 801 ore , various useful minerals grow each other, and their flotation performance, specific gravity, magnetism, and electrical conductivity are very similar. Therefore, it is difficult to obtain high-grade concentrate products of a single mineral through ore dressing. Among the three concentrate products obtained, rare earth , Rare metals have been enriched to a certain extent, but their grades are not up to the requirements of metallurgical concentrates, and also contain a large amount of other valuable metals, which increases the difficulty of subsequent hydrometallurgical separation, so the deposit has been developed so far use

Method used

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  • Complex multi-metal rare earth ore beneficiation separation and enrichment method
  • Complex multi-metal rare earth ore beneficiation separation and enrichment method
  • Complex multi-metal rare earth ore beneficiation separation and enrichment method

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Experimental program
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Effect test

Embodiment 1

[0037] The Balzhe Deposit (also known as the 801 Mine) is a super-large rare rare earth metal deposit. The useful minerals mainly include pyroyl-yttrium, zircon, columbite, pyrochlore, black rare gold, garnet, Monazite, bastnaesite, iron thorium, etc., of which the former three are the main ones, the gangue minerals mainly contain albite, plagioclase, quartz, aionite, and albino. REO grade 0.63%, Nb 2 O 5 Grade 0.23%, ZrO 2 Grade 1.8%.

[0038] (1) First, the ore is finely crushed to 3mm, and the spiral chute is used for sorting, and the coarse concentrate and the tailing 1 are obtained.

[0039] (2) Grind the gravity separation coarse concentrate to a fineness of -0.038 accounting for 50%, adjust the slurry concentration to 35%, and adjust the temperature to 30°C, then transfer the slurry to the flotation tank; add 1000g to the slurry / t sodium carbonate, stir for 15min; add water glass 800g / t, carboxymethylcellulose 200g / t, stir for 15min, add 800g / t sodium fluorosilicate, stir ...

Embodiment 2

[0045] The Balzhe Deposit (also known as the 801 Mine) is a super-large rare rare earth metal deposit. The useful minerals mainly include pyroyl-yttrium, zircon, columbite, pyrochlore, black rare gold, garnet, Monazite, bastnaesite, iron thorium, etc., of which the former three are the main ones, the gangue minerals mainly contain albite, plagioclase, quartz, aionite, and albino. REO grade 0.63%, Nb 2 O 5 Grade 0.23%, ZrO 2 Grade 1.8%.

[0046] (1) First, the ore is finely crushed to 2.5mm, and the spiral chute is used for sorting, and the coarse concentrate and the tailing 1 are obtained.

[0047] (2) Grind the gravity separation coarse concentrate to a fineness of -0.038 accounting for 80%, adjust the slurry concentration to 30%, and adjust the temperature to 35°C, then transfer the slurry to the flotation tank; add 1200g to the slurry / t sodium carbonate, stir for 10min; add water glass 1000g / t, carboxymethyl cellulose 250g / t, stir for 10min, add 1000g / t sodium fluorosilicate, ...

Embodiment 3

[0053] The Balzhe Deposit (also known as the 801 Mine) is a super-large rare rare earth metal deposit. The useful minerals mainly include pyroyl-yttrium, zircon, columbite, pyrochlore, black rare gold, garnet, Monazite, bastnaesite, iron thorium, etc., of which the former three are the main ones, the gangue minerals mainly contain albite, plagioclase, quartz, aionite, and albino. REO grade 0.63%, Nb 2 O 5 Grade 0.23%, ZrO 2 Grade 1.8%.

[0054] (1) First, the ore is finely crushed to 2mm, and the spiral chute is used for sorting, and the coarse concentrate and the tailing 1 are obtained.

[0055] (2) Grind the gravity separation coarse concentrate to a fineness of -0.038 accounting for 90%, adjust the slurry concentration to 25%, and adjust the temperature to 40°C, then transfer the slurry to the flotation tank; add 1500g to the slurry / t sodium carbonate, stir for 5min; add water glass 1200g / t, carboxymethyl cellulose 200g / t, stir for 5min, add 1200g / t sodium fluorosilicate, stir...

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Abstract

The invention provides a complex multi-metal rare earth ore beneficiation separation and enrichment method. The method comprises the following steps of firstly, finely crushing ore, realizing pre-tailing discarding in a spiral mode, and discarding 50% or more of gangue minerals; performing ore grinding flotation on gravity separation rough concentrate to recover rare earth and niobium minerals, and applying strong magnetism to flotation tailings to further recover rare earth and niobium mineral; and finally recovering zirconium concentrate from magnetic separation tailings through gravity separation, wherein the grade of zirconium is 55.025%, and the recovery rate is 51.55%. According to the method, the cost can be saved on, the recovery rates of the rare earth and niobium are increased, the contents of rare earth and niobium in subsequent zirconium concentrate are reduced, and the quality of the zirconium concentrate is improved.

Description

Technical field [0001] The invention belongs to the technical field of beneficiation, and specifically relates to a method for beneficiation, separation and enrichment of complex multimetal rare earth ore. Background technique [0002] The Baerzhe deposit (also known as the 801 deposit) is a super-large rare earth metal deposit. Although the grade of rare earths is low and the REO is about 0.6%, the deposit is dominated by heavy rare earths and is associated with niobium, zirconium, and beryllium. Great development and utilization value. There are many useful minerals and gangue minerals contained in 801 ore. The useful minerals mainly include pyroxene, zircon, columbite, pyrochlore, black gold, garnet, monazite, fluorocarbon Cerium ore, iron thorium, etc., of which the former three are the main ones. Gangue minerals mainly contain albite, plagioclase, quartz, alexandrite, and amphibole. The mine has been discovered for decades. Scholars at home and abroad have carried out a lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B9/00B03C1/30B03D1/02B03D103/02
CPCB03B7/00B03B9/00B03C1/30B03D1/025B03D2203/02
Inventor 刘志超李广李春风强录德马嘉刘会武唐宝彬向秋林
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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