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Low-temperature-resistant rare earth ore flotation collecting agent and preparation method and application thereof

A rare earth ore and collector technology, used in flotation, solid separation, etc., can solve the problems of poor selectivity and collection performance of collectors, restricting the development and utilization of rare earth ore, and poor low temperature resistance of collectors. Achieve the effect of reducing capital investment and energy consumption, mature production technology, and good flotation effect

Active Publication Date: 2016-10-26
INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the current sorting work of rare earth ores, the collectors used have the disadvantages of poor selectivity and collection and high toxicity, which limits the development and utilization of rare earth ores to a certain extent.
[0004] At the same time, the low temperature resistance of existing collectors is poor, and the scope of application is small

Method used

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  • Low-temperature-resistant rare earth ore flotation collecting agent and preparation method and application thereof
  • Low-temperature-resistant rare earth ore flotation collecting agent and preparation method and application thereof
  • Low-temperature-resistant rare earth ore flotation collecting agent and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The rare earth ore collector is composed of the following mass ratio materials: 30 parts of salicylaldoxamic acid, 50 parts of C 5～7 Hydroxamic acid, 10 parts o-hydroxynaphthalene hydroxamic acid, 8 parts coconut oleic acid, 2 parts OP-10.

[0035] Will C 5～7 Add 50kg of fatty acid, 10kg of o-hydroxynaphthoic acid and 20kg of dimethyl carbonate into the enamel reaction kettle, stir evenly, add 8.0kg of concentrated sulfuric acid (accounting for 10% of the total weight), install the cooling reflux device, and start the heating reflux reaction After 20 hours, the product obtained liquid mixed carboxylate after centrifugation, and discarded after the paste treatment; 10kg of the liquid mixture (carboxylate) of gained was obtained, salicylaldehyde 5kg and 15% hydroxylamine sulfate aqueous solution containing 16.0kg hydroxylamine sulfate Add it into the enamel reaction kettle, add dropwise the mass fraction of 35% sodium hydroxide aqueous solution while stirring, keep the p...

Embodiment 2

[0040] This rare earth ore collector is composed of the following mass ratio materials: 35 parts of salicylaldoxamic acid, 40 parts of C 5-7 Hydroxamic acid, 15 parts of naphthalene hydroxamic acid, 7.5 parts of coconut oleic acid, 2.5 parts of OP-10.

[0041] Will C 5-7 Add 40kg of fatty acid, 15kg of naphthoic acid and 25.0kg of dimethyl carbonate into the enamel reaction kettle, stir evenly, add 12kg of concentrated sulfuric acid, install the cooling reflux device, start heating and reflux reaction for 15 hours, and the product is centrifuged to obtain liquid The liquid in the upper phase is a mixed carboxylate, and the lower paste is discarded after treatment; 10kg of the resulting liquid mixed carboxylate is added, and then 6.25kg of salicylaldehyde and 15.9kg of 20% aqueous solution of hydroxylamine sulfate are added to the enamel. In the reactor, add dropwise the mass fraction of 40% sodium hydroxide aqueous solution while stirring, keep the pH value in the reactor not...

Embodiment 3

[0046] This rare earth ore collector is composed of the following mass ratio materials: 40 parts salicylic hydroxamic acid, 32.5 parts C 5-7 Alkyl hydroxamic acid, 7.5 parts o-hydroxynaphthalene hydroxamic acid, 9 parts coconut oleic acid, 1 part OP-10.

[0047] Will C 5-7 Add 32.5kg of fatty acid, 7.5kg of o-hydroxynaphthoic acid and 30kg of dimethyl carbonate into the enamel reaction kettle. After stirring evenly, add 9.0kg of concentrated sulfuric acid, install a cooling reflux device, and heat and reflux for 10 hours. Obtaining the upper layer liquid of the liquid phase after layering is a mixed carboxylate, and the lower floor paste is discarded after processing; get 10kg from the liquid mixed carboxylate of gained, then add 8kg salicylaldehyde and 18.6kg hydroxylamine sulfate containing 15% Hydroxylamine sulfate aqueous solution is added to the enamel reaction kettle, and the mass fraction is 50% sodium hydroxide aqueous solution is added dropwise while stirring, the pH...

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Abstract

The invention discloses a low-temperature-resistant rare earth ore flotation collecting agent. The collecting agent comprises, by weight, 30-40 parts of 2-hydroxybenzohydroxamic acid, 30-50 parts of C5-7 hydroxamic acid, 5-15 parts of o-methyl naphthalene hydroxamic acid, 5-10 parts of coconut oil acid and 1-2.5 parts of surface active agents. The invention further provides a preparation method of the collecting agent. The collecting agent is good in water solubility, resistant to low temperature, excellent in selectivity and collecting property, good in flotation performance and easy to degrade, and the defects that an existing collecting agent for industrial application is poor in selectivity and difficult to degrade and needs heating flotation are overcome; and the production technique of the prepared collecting agent is simple and easy to implement, capital construction investment and energy consumption are reduced for enterprises, and the profit of the enterprises is increased.

Description

technical field [0001] The invention belongs to the field of rare earth ore separation, and in particular relates to a low-temperature-resistant rare earth ore flotation collector, a preparation method and an application thereof. Background technique [0002] my country's proven industrial reserves of rare earth oxides are 18.59 million tons, accounting for 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] However, currently in the sorting work of rare earth ores, the collectors used have the disadvantages of poor selectivity and collection and high toxicity, which limits...

Claims

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Application Information

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IPC IPC(8): B03D1/01B03D101/02
CPCB03D1/01B03D2201/02
Inventor 熊文良陈炳炎陈达邓杰邓善芝
Owner INST OF MULTIPURPOSE UTILIZATION OF MINERAL RESOURCES CHINESE ACAD OF GEOLOGICAL SCI
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