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Rare earth ore collecting agent and preparation method and application thereof

A collector and rare earth ore technology, applied in solid separation, flotation, etc., can solve the problems of poor selectivity of reagents, lower recovery rate of rare earth, difficulty in meeting product requirements of rare earth concentrate grade, etc., to achieve reduced dosage and good environmental adaptation Sexuality, selectivity and excellent results

Inactive Publication Date: 2015-11-18
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The flotation process of fatty acid as a collector not only leads to entrainment of a large amount of rare earth minerals in the fluorite froth, which reduces the recovery rate of rare earth, but also due to the poor selectivity of the reagent, the grade of the final rare earth concentrate is difficult to meet the product requirements

Method used

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  • Rare earth ore collecting agent and preparation method and application thereof
  • Rare earth ore collecting agent and preparation method and application thereof
  • Rare earth ore collecting agent and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment example 1

[0033] The rare earth ore positive flotation collector is composed of the following mass ratio materials: 50 parts of octyl alkyl hydroxamic acid, 10 parts of naphthalene methyl hydroxamic acid, 10 parts of salicylic hydroxamic acid, 14 parts of iodine value 90-120 oleic acid, 4.25 parts of Span-80.

[0034] Will C 8Add 50kg of fatty acid, 10kg of naphthoic acid, 10kg of salicylic acid and 8kg of methanol into the enamel reaction kettle, stir evenly, add 2.3kg of concentrated sulfuric acid (accounting for 3% of the total weight), install the cooling reflux device, and start the heating reflux reaction After 20 hours, the product was centrifuged to obtain liquid mixed carboxylate, and the paste was discarded after treatment; 15kg of the obtained liquid mixed carboxylate and 6.5kg of 15% hydroxylamine sulfate aqueous solution (molar ratio 1:0.55) were added to the enamel In the reaction kettle, dropwise add a 30% sodium hydroxide aqueous solution while stirring, keep the pH val...

Embodiment example 2

[0039] This rare earth ore positive flotation collector is composed of the following mass ratio materials: 70 parts of octyl alkyl hydroxamic acid, 10 parts of naphthalene methyl hydroxamic acid, 10 parts of salicylic hydroxamic acid, 17.5 parts of iodine value 90-120 soybean oleic acid, 2.8 parts of Span-80.

[0040] Will C 8 Add 70Kg of fatty acid, 10kg of naphthoic acid, 10kg of salicylic acid and 8kg of methanol into the enamel reaction kettle. After stirring evenly, add 4.5kg of concentrated sulfuric acid, install the cooling reflux device, and start the heating and reflux reaction for 25 hours. Obtain liquid mixed carboxylate, throw away after paste treatment; Get 15kg and massfraction in the liquid mixed carboxylate of gained and be 10% hydroxylamine sulfate aqueous solution 6.8kg and add in the enamel reaction kettle, add dropwise massfraction while stirring It is 35% sodium hydroxide aqueous solution, keep the pH value in the reaction kettle not less than 11, control...

Embodiment example 3

[0045] The rare earth ore positive flotation collector is composed of the following mass ratio materials: 50 parts of octyl alkyl hydroxamic acid, 10 parts of naphthalene methyl hydroxamic acid, 20 parts of salicylic hydroxamic acid, 17.8 parts of iodine value 90-120 oleic acid, 4.4 parts span-80.

[0046] Will C 8 Add 50Kg of fatty acid, 10Kg of naphthoic acid, 20Kg of salicylic acid and 9Kg of methanol into the enamel reaction kettle. After stirring evenly, add 8kg of concentrated sulfuric acid, install a cooling reflux device, and heat and reflux for 25 hours. Mixed carboxylate, discarded after paste treatment; get 15kg and 7.3kg of hydroxylamine sulfate aqueous solution with a mass fraction of 15% in the obtained liquid mixed carboxylate and add it to the enamel reaction kettle, and add it dropwise with a mass fraction of 35% while stirring. % sodium hydroxide aqueous solution, keep the pH value in the reactor not less than 11, control the reaction temperature at 55 ° C, ...

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Abstract

The invention relates to a rare earth ore direct flotation collecting agent and a preparation method and application thereof. The collecting agent is formed by mixing octanohydroxamic acid, naphthalene formohydroxamic acid, salicyhydroxamic acid, fatty acid with the iodine value of 90-120 and Span-80. The prepared collecting agent is high in collecting capacity, small in use quantity, resistant to low temperature, low in cost and small in pollution, and can be used for mineral flotation of bastnaesite or xenotime or monazite.

Description

technical field [0001] The invention relates to a rare earth ore beneficiation collector and a preparation method and application thereof. Background technique [0002] my country's proven industrial reserves of rare earth oxides are 18.59 million tons, accounting for about 23.6% of the world's proven rare earth reserves, and the light, medium and heavy rare earth elements are complete. There are many types of rare earth minerals, and the three most important minerals for extracting rare earth metals are monazite [(RE,Th,Y)PO 4 ], bastnaesite [RECO 3 F] and xenotime [(Y,RE)PO 4 ]. Rare earths are widely used in clean energy, national defense technology, industrial technology, electronic products and other fields. [0003] At present, most rare earth mine flotation operations use one or more mixtures of alkyl hydroxamic acid, cycloalkyl hydroxamic acid, hydroxamic acid with benzene ring and naphthyl hydroxamic acid as collectors. . [0004] This type of collector can ac...

Claims

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Application Information

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IPC IPC(8): B03D1/01B03D101/02
Inventor 熊文良陈达邓杰曾小波杨耀辉邓善芝张新华
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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