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A kind of flotation composite collector and its preparation method and application

A composite collector and flotation technology, used in flotation, oxygen-containing functional group reduction preparation, organic chemistry, etc., can solve the problems of complex treatment, long time, low yield, etc. The effect of reducing production cost and high selectivity

Active Publication Date: 2021-08-31
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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  • A kind of flotation composite collector and its preparation method and application
  • A kind of flotation composite collector and its preparation method and application
  • A kind of flotation composite collector and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add 9.91 parts of tert-butyl peroxybenzoate (98.0% content) into a reactor containing 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 (content: 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 (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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PUM

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Abstract

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. The preparation method uses peroxide and hydroxylamine salt as raw materials to prepare a composite collector containing hydroxamic acid compounds and alcohols; Iron ore, scheelite, wolframite, cassiterite and other ores have strong collection capacity and selectivity, and have obtained better flotation indicators in flotation tests.

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 Patents(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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