Rare-earth ore beneficiation method

A beneficiation method and rare earth ore technology, which are applied in flotation, solid separation and other directions, can solve the problems of low recovery rate, rare earth grade and high recovery rate, and low technology, so as to improve rare earth grade, high recovery rate and purity, and improve The effect of concentrate purity

Active Publication Date: 2019-03-01
崔源发
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of rare earth ore beneficiation method, which adopts three times of rough flotation and three times of fine flotation, and the grade and recovery rate of rare earth after ore beneficiation are high, so as to solve the problem that the prior art is not high and the recovery rate is low

Method used

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  • Rare-earth ore beneficiation method

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Experimental program
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Effect test

Embodiment 1

[0042] S1. Crush the rare earth ore in the continental channel in Dechang, Sichuan, grind the ore to a fineness of -0.045mm, accounting for 82% of the total weight, and then perform cyclone desliming and classification to obtain sand and overflow. Take 100kg of sand and add water for adjustment The mass concentration of slurry to mortar is 50%;

[0043] S2, add 150gNaOH solid, 580g water glass, and 120g alkyl hydroxamic acid and the kerosene of 140g to the grit settling after pulping, carry out rough flotation for the first time for 5 minutes, obtain a rough flotation concentrate and a rough Flotation tailings;

[0044] S3, adding 70g of alkyl hydroxamic acid to the tailings of the primary rough flotation, and performing the second rough flotation for 1 minute to obtain the concentrate of the second rough flotation and the tailings of the second rough flotation;

[0045] S4. Add 30 g of alkyl hydroxamic acid to the tailings of the secondary rough flotation, and perform the th...

Embodiment 2

[0050] S1. Crush the rare earth ore in the continental channel in Dechang, Sichuan, grind the ore to a fineness of -0.045mm, accounting for 85% of the total weight, and then perform cyclone desliming and classification to obtain grit and overflow. Take 100kg of grit and add water for adjustment The mass concentration of slurry to mortar is 55%;

[0051] S2, add 165g NaOH solid, 600g water glass, and 130g alkyl hydroxamic acid and 150g diesel oil to the settling sand after pulping, carry out rough flotation for the first time for 8 minutes, obtain a rough flotation concentrate and a rough flotation Tailings;

[0052] S3, adding 80g of alkyl hydroxamic acid to the tailings of the primary rough flotation, and performing the second rough flotation for 3 minutes to obtain the concentrate of the second rough flotation and the tailings of the second rough flotation;

[0053] S4, adding 40g of alkyl hydroxamic acid to the tailings of the secondary rough flotation, and carrying out th...

Embodiment 3

[0058] S1. Crush the rare earth ore in the continental channel in Dechang, Sichuan, grind the ore to a fineness of -0.045mm, accounting for 88% of the total weight, and then carry out cyclone desliming and classification to obtain sand settling and overflow. Take 100kg of sand settling and add water for adjustment The mass concentration of slurry to mortar is 60%;

[0059] S2, add 180g NaOH solid, 620g water glass, and 140g alkyl hydroxamic acid and 160g kerosene to the settling sand after slurry adjustment, carry out the rough flotation for the first time for 10 minutes, obtain a rough flotation concentrate and a rough flotation Tailings;

[0060] S3, adding 90g of alkyl hydroxamic acid to the tailings of the primary rough flotation, and performing the second rough flotation for 5 minutes to obtain the concentrate of the second rough flotation and the tailings of the second rough flotation;

[0061] S4, adding 50g of alkyl hydroxamic acid to the tailings of the secondary rou...

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Abstract

The invention belongs to the technical field of rare-earth ore production, and provides a rare-earth ore beneficiation method. Three times rough flotation and three times fine flotation are adopted, NaOH, water glass and alkyl hydroximic acid used as a first collecting agent are added in the first rough flotation, on the basis of sodium hydroxide, a surfactant of sodium potassium tartrate, sodiump-toluenesulfonate and a sodium cocoyl methyl taurate mixture are added into a fifth collecting agent, on the basis of the sodium hydroxide, a non-ionic surfactant of dodecyl glucoside and a sodium dodecyl sulfate mixture are further added into a sixth collecting agent. By adopting the rare-earth ore beneficiation method, final concentrate of the rare-earth ore grade (REO) obtained is 70% or above, the recovery rate is 85% or above, the impurities are low, and the rare earth ore grade, the recovery rate and the purity are all high; and in addition, the method does not need complex equipment, and the feasibility is higher.

Description

technical field [0001] The invention relates to a rare earth ore beneficiation method, which belongs to the technical field of rare earth ore production. Background technique [0002] Rare Earth Metals (Rare Earth Metals), also known as rare earth elements, are III elements of the periodic table B The general term for the 17 elements of scandium, yttrium, and lanthanide in the group, often represented by R or RE. The first rare earth element yttrium was discovered in 1794, and the natural rare earth element promethium was discovered in 1972. It took 178 years for people to find all 17 rare earth elements in nature. The luster of rare earth metals is between that of silver and iron. Rare earth elements are known as industrial "vitamins" and are widely used in light industry, agriculture, energy, environmental protection, industrial machinery, petrochemical, electronic information, national defense and high-tech materials and other industries. is an important strategic res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D1/012B03D101/02B03D103/02
CPCB03D1/012B03D1/018B03D2201/005B03D2201/02B03D2203/02
Inventor 崔源发
Owner 崔源发
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