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A kind of rare earth ore collector and its preparation method and application

A collector and rare earth ore technology, applied in solid separation, flotation, etc., can solve the problems of low rare earth recovery rate, rare earth concentrate grade difficult to meet product requirements, poor reagent selectivity, etc., to achieve good environmental adaptability, selectivity, etc. Sexuality and excellent, dosage-reducing effect

Inactive Publication Date: 2017-05-10
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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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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  • A kind of rare earth ore collector and its preparation method and application
  • A kind of rare earth ore collector and its preparation method and application
  • A kind of rare earth ore collector and its preparation method and application

Examples

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Effect test

Embodiment example 1

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

[0034] will C 850kg of fatty acid, 10kg of naphthoic acid, 10kg of salicylic acid and 8kg of methanol were added to the enamel reaction kettle, after stirring, after adding 2.3kg of concentrated sulfuric acid (accounting for 3% of the total weight), after installing the cooling reflux device, the heating and refluxing reaction was started. After 20 hours, the product was centrifuged to obtain a liquid mixed carboxylate, which was discarded after the paste treatment; 15kg of the obtained liquid mixed carboxylate and 6.5kg of a 15% hydroxylamine sulfate aqueous solution (molar ratio 1:0.55) were added to the enamel. In the reaction kettle, the mass fraction of 30% sodium hydroxide aqueous so...

Embodiment example 2

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

[0040] will C 8 70kg of fatty acid, 10kg of naphthoic acid, 10kg of salicylic acid and 8kg of methanol were added to the enamel reaction kettle, and after stirring, after adding 4.5kg of concentrated sulfuric acid, after installing the cooling reflux device, the heating and refluxing reaction was started for 25 hours. After the product was centrifuged The liquid mixed carboxylate is obtained, and the paste is discarded after treatment; 15 kg of the obtained liquid mixed carboxylate and 6.8 kg of hydroxylamine sulfate aqueous solution with a mass fraction of 10% are added to the enamel reaction kettle, and the mass fraction is added dropwise while stirring. It is 35% sodium hydroxi...

Embodiment example 3

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

[0046] will C 8 50Kg of fatty acid, 10Kg of naphthoic acid, 20Kg of salicylic acid and 9Kg of methanol were added to the enamel reaction kettle. After stirring, 8kg of concentrated sulfuric acid was added. Mixed carboxylate, the paste is discarded after treatment; 15kg and 7.3kg of hydroxylamine sulfate aqueous solution with a mass fraction of 15% are taken from the obtained liquid mixed carboxylate and added to the enamel reaction kettle, and the mass fraction of 35 is added dropwise while stirring. % aqueous sodium hydroxide solution, keep the pH value in the reaction kettle not less than 11, control the reaction temperature at 55 ℃, after dripping 15.0kg of sodium hydroxide, react for ...

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Abstract

The present invention relates to a rare earth ore positive flotation collector and its preparation method and application. The collector consists of octyl hydroxamic acid, naphthyl hydroxamic acid, salicylic hydroxamic acid and an iodine value of 90-120. The fatty acid and Span-80 are mixed, the collector prepared by the present invention has strong collecting capacity, less consumption, low temperature resistance, low cost, and little pollution, and can be applied to bastnaesite or xenotime or monazite minerals flotation.

Description

technical field [0001] The invention relates to a rare earth ore beneficiation collector and its preparation method and application. 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. 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, defense technology, industrial technology, electronic products and other fields. [0003] At present, one or more of alkyl hydroxamic acid, cycloalkyl hydroxamic acid, hydroxamic acid with benzene ring and naphthyl hydroxamic acid are mostly used as collectors in rare earth mine flotation operations. . [0004] This kind of collector can achieve good indicator...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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