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Beneficiation method for bastnaesite

A beneficiation method and bastnaesite technology, 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 rare earth concentrate quality, stable index and significant economic benefits

Active Publication Date: 2019-11-15
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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  • Beneficiation method for bastnaesite

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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-mentioned agents into the slurry in order, and stir while adding. After the last agent is added, continue to stir for 3 minutes.

[0047] Flotation: 3-10 minutes of flotation to obtain the rough concentrate of rare earth ore, and the rough concentrate is selected twice to obtain the rare...

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Abstract

The invention provides a beneficiation method for bastnaesite. The beneficiation method sequentially comprises an adjusting step of an ore pulp pH value and a rare earth flotation technology, whereinthe adjusting step of the ore pulp pH value comprises the procedure that the ore pulp pH value is adjusted to 8.5-9.5 by adding alkaline matter. The technical scheme is adopted, the pH value of a flotation system is adjusted, thus arfvedsonite is restrained effectively, and the problems that rare earth ore concentrate is low in grade and high in iron content are solved. In addition, only the alkaline matter needs to be added to adjust the ore pulp pH value, so that operation is simple, the index is stable, thus the obtained rare earth ore concentrate is good in quality by restraining the arfvedsonite, and economic benefits are significant.

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 Applications(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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