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Flotation composite collecting agent as well as preparation method and application thereof

A composite collector and flotation technology, applied in flotation, oxygen-containing functional group reduction preparation, solid separation, etc., can solve the problems of long time consumption, low yield, complicated treatment, etc., and achieve reduced production costs and high selectivity , The effect of strong flotation collection capacity

Active Publication Date: 2021-01-22
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned method for preparing hydroxamic acid collectors takes a long time, and the yield is low. As a flotation agent, it needs to be processed more complicatedly.

Method used

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  • Flotation composite collecting agent as well as preparation method and application thereof
  • Flotation composite collecting agent as well as preparation method and application thereof
  • Flotation composite collecting agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add 9.91 parts of tert-butyl peroxybenzoate (98.0% content) into a reactor equipped with 15.55 parts of toluene, add 2.89 parts of sodium bisulfite, and react for 20 minutes, then add 3.60 parts of hydroxylamine hydrochloride (98.5% content) and 4.38 parts of sodium hydroxide (96.0%), stirred and reacted for 3 hours, filtered to remove the inorganic salt obtained by the reaction, and recovered the toluene solvent by distillation to obtain a white composite collector product.

Embodiment 2

[0042] Add 9.91 parts of tert-butyl peroxybenzoate (98.0% content) into a reactor containing 20.00 parts tetrahydrofuran, add 3.57 parts sodium sulfite, and react for 20 minutes, then add 3.60 parts hydroxylamine hydrochloride (98.5% content) and 6.93 parts Potassium hydroxide (content: 85.0%) was stirred and reacted for 3 hours, the inorganic salt obtained by the reaction was removed by filtration, and the toluene solvent was recovered by distillation to obtain a pale yellow composite collector product.

Embodiment 3

[0044]9.91 parts of tert-butyl peroxybenzoate (content is 98.0%) are added in the reactor that 10.00 parts of toluene+5.00 parts of ethanol are housed, add 4.40 parts of sodium thiosulfate, after reacting for 20min, add 8.45 parts of hydroxylamine sulfate (content 99%) and 4.38 parts of sodium hydroxide (content is 96.0%), stirred for 3h, filtered to remove the inorganic salt obtained by the reaction, distilled and recovered toluene and ethanol solvent to obtain a pale yellow composite collector product.

[0045] The compound collector product obtained is weighed, and calculates its theoretical output according to the addition of raw material, calculates yield, and wherein the yield of hydroxamic acid compounds prepared in embodiment 1-3 is respectively 91.5%, 89.29%, 88.21% %.

[0046] Structure Characterization

[0047] The structure of the flotation composite collector was characterized by mass spectrometry, and the pure hydroxamic acid compounds were obtained after separa...

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Abstract

The invention belongs to the technical field of mineral flotation, and particularly relates to a flotation composite collecting agent and a preparation method and an application thereof. The preparation method comprises the following steps: taking peroxide and hydroxylamine salt as raw materials to prepare a composite collecting agent containing a hydroxamic acid compound and alcohol; the preparation method is wide in raw material source and simple in technological operation, the prepared flotation composite collecting agent has high collecting capacity and selectivity on ilmenite, scheelite,wolframite, cassiterite and other ores, and good flotation indexes are obtained in a flotation test.

Description

technical field [0001] The invention belongs to the technical field of mineral flotation, and in particular relates to a flotation composite collector and its preparation method and application. Background technique [0002] Hydroxamic acid is a typical metal chelating agent. The hydroxyl oxygen atom and oxime nitrogen atom in the molecule can coordinate with most metal elements, usually forming a four-membered or five-membered ring chelate. Therefore, hydroxamic acid compounds are widely used in mineral flotation, metallurgy, medicine, water treatment and other fields. [0003] In the field of mineral flotation, hydroxamic acid is an important type of flotation collector, which is widely used in the flotation separation of tungsten ore, cassiterite, ilmenite, rare earth ore and other minerals. The commonly used synthesis methods of hydroxamic acid compounds mainly include: hydroxylamine method, nitroalkane rearrangement method, nitroalkane reduction method, amine oxidation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/01B03D1/02C07C259/10C07C29/132C07C31/12B03D101/02B03D103/02
CPCB03D1/01B03D1/02B03D2201/02B03D2203/02C07C29/132C07C259/10C07C31/12
Inventor 马鑫钟宏曹占芳王帅
Owner CENT SOUTH UNIV
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