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Bastnaesite beneficiation method

A beneficiation method and bastnaesite technology, which are applied in flotation, solid separation and other directions, can solve the problems of little effect of sodium iron amphibole, and achieve the effects of good quality rare earth concentrate, simple operation and stable index.

Active Publication Date: 2021-12-07
CHINA ENFI ENGINEERING CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to provide a beneficiation method for bastnaesite to solve the technical problem in the prior art that the effect of inhibiting sorbite amphibole is little

Method used

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  • Bastnaesite beneficiation method

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Experimental program
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Effect test

Embodiment 1

[0034] A rare earth mine in Sichuan, the ore contains 4.16% REO, the main rare earth minerals are bastnaesite, pericite, allanite, iron minerals are hematite, limonite, and gangue minerals are mainly quartz and fluorite , barite, calcite, feldspar, sodium iron amphibole, muscovite, etc.

[0035] The beneficiation steps are as follows:

[0036] Pretreatment: mix the ore with water, the ore mass percentage concentration is 20%, and grind the ore to -0.074mm in a ball mill to account for 90%.

[0037] Adding agents: sodium hydroxide: add 100 grams per ton of ore; water glass: add 4000 grams per ton of ore; hydroxamic acid: add 4000 grams per ton of ore; pinitol oil: add 30 grams per ton of ore.

[0038] Stirring: Add the above-mentioned agents into the slurry in order, and stir while adding. After the last agent is added, continue to stir for 5 minutes.

[0039] Flotation: 3-10 minutes of flotation to obtain the rough concentrate of rare earth ore, and the rough concentrate is ...

Embodiment 2

[0042] A rare earth mine in Shandong, the ore contains 3.22% REO, the main rare earth minerals are bastnaesite, bastnaesite, ceriapatite, monazite and so on. Gangue minerals include calcite, barite, sodium iron amphibole, quartz, fluorite, mica and so on.

[0043] The beneficiation steps are as follows:

[0044] Pretreatment: mix the ore and water, the ore mass percentage concentration is 70%, and grind the ore to -0.074mm in a ball mill to account for 60%.

[0045]Adding agents: sodium hydroxide: add 900 grams per ton of ore; water glass: add 2000 grams per ton of ore; hydroxamic acid: add 1500 grams per ton of ore; pinitol oil: add 200 grams per ton of ore.

[0046] Stirring: Add the above medicaments into the slurry in order, and stir while adding. After the last medicament is added, continue to stir for 3 minutes.

[0047] Flotation: 3-10 minutes of flotation to obtain rough concentrate of rare earth ore, and the rough concentrate is subjected to 2 times of beneficiation...

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Abstract

The invention provides a method for beneficiating bastnaesite. The ore beneficiation method includes a step of adjusting the pH value of the ore pulp and a rare earth flotation process in sequence; wherein, the step of adjusting the pH value of the ore pulp includes adjusting the pH of the ore pulp to 8.5-9.5 by adding alkaline substances. Applying the technical solution of the present invention, by adjusting the pH value of the flotation system, the sodium-iron amphibole is effectively suppressed, and the problem of low-grade rare earth concentrate and high iron content is solved; in addition, because only alkali substances need to be added Adjusting the pH value of the slurry is easy to operate and the index is stable; thus, the rare earth concentrate can be obtained with good quality and significant economic benefits through the inhibitor of sodium amphibole.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a method for mineral processing of bastnaesite. Background technique [0002] Bastnaesite is the most important and also one of the rare earth minerals with the largest output. When flotation rare earth ores, it is usually necessary to suppress associated minerals, such as fluorspar, barite calcite, sodium iron amphibole, quartz, etc. Flotation is the most commonly used and most effective method for rare earth ore separation regardless of the single separation process or combined separation process, and the effective suppression of sodium-iron amphibole during the flotation process is the key factor for obtaining high-quality rare earth concentrates one. [0003] In general, bastnaesite rare earth ore is often associated with sodium amphibole. Under the general collector system, bastnaesite and sodium amphibole are very close in buoyancy. The traditional method is to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B9/00B03D1/00B03D1/002B03D1/016B03D101/02B03D103/04
CPCB03B9/00B03D1/00B03D1/002B03D1/016B03D2201/005B03D2201/02B03D2203/04
Inventor 于传兵刘志国王鑫宋磊王传龙王亚运
Owner CHINA ENFI ENGINEERING CORPORATION
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