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Nonferrous metal mineral flotation collector with sulfydryl-hydroxamic acidyl structure and preparation method and application thereof

A hydroxamic acid-based, non-ferrous metal technology, applied in flotation, solid separation, etc., can solve the problems of not being able to effectively collect sulfide minerals and oxidized minerals at the same time, limited improvement capacity, low metal recovery rate, etc., and achieve enhanced capacity , increase the recovery rate, the effect of simple recovery process

Active Publication Date: 2015-07-01
岳阳中科华昂精细化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the flotation collectors in the prior art are developed solely for sulfide minerals or oxidized minerals in non-ferrous metal ores, and cannot effectively collect sulfide minerals and oxidized minerals at the same time, especially for the Mineral mixed non-ferrous metal ores, although a variety of agents can be used in combination to increase the metal recovery rate, but the improvement capacity is limited, and the metal recovery rate is low, resulting in waste of resources

Method used

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  • Nonferrous metal mineral flotation collector with sulfydryl-hydroxamic acidyl structure and preparation method and application thereof
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  • Nonferrous metal mineral flotation collector with sulfydryl-hydroxamic acidyl structure and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Preparation of N,N-dibutyldithiocarbamate hydroxamic acid:

[0042] Add 27.8 parts of sodium N,N-dibutyldithiocarbamate to a mixed solution containing 9.75 parts of 2-chloroacetohydroxamic acid, 0.8 parts of sodium hydroxide and 36 parts of methanol at a temperature of 20°C under stirring. After completion, the reaction was stirred at 20° C. for 2 h. Then lower the temperature to below 5°C and acidify with concentrated sulfuric acid to a pH of about 4. After filtering, the filtrate was distilled under reduced pressure and then washed and dried to obtain a white solid, namely N,N-dibutyldithiocarbamic acid hydroxamic acid. The yield was 98%. Product infrared characterization such as figure 1 , and its characteristic peaks are (cm -1 ): 3233.11, 2957.78, 2934.44, 2869.11, 1646.44, 1145.53, 934.12.

Embodiment 2

[0044] Preparation of O-isobutylxanthogen hydroxamic acid:

[0045] Replace 27.8 parts of N with 17.2 parts of sodium isobutyl xanthate, sodium dithiocarbamate of N-dibutyl, all the other are with embodiment 1, obtain O-isobutyl xanthate hydroxamic acid, and its yield is 96%. Product infrared characterization such as figure 2 , and its characteristic absorption peaks are (cm -1 ): 3212.5, 2962.67, 2929.18, 2870.86, 1646.91, 1164.17, 972.30.

Embodiment 3

[0047] Preparation of O,O'-dibutyl dithiophosphorohydroxamic acid:

[0048] Replace 27.8 parts of N,N-dibutyl sodium dithiocarbamate with 26 parts of O, O'-dibutyl ammonium dithiophosphate, and the rest are the same as in Example 1 to obtain O, O'-dibutyl dithiocarbamate Phosphate hydroxamic acid. Its yield was 97%. Product infrared characterization such as image 3 , and its characteristic absorption peaks are (cm -1 ): 3214.01, 2869.73, 1669.11, 1166.05, 980.56.

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Abstract

The invention discloses a nonferrous metal mineral flotation collector with a sulfydryl-hydroxamic acidyl structure and a preparation method and application thereof. The flotation collector has both sulfydryl groups and hydroxamic acidyl groups; by taking the flotation collector as a nonferrous metal mineral collector, nonferrous metal minerals in nonferrous metal ores can be efficiently recovered through flotation separation, and therefore the goal that minerals in the form of sulfide and minerals in the form of oxide in the nonferrous metal ores are recovered simultaneously by a single flotation reagent is achieved. A synergistic effect on chelate metal ions exists between the sulfydryl groups and hydroxamic acidyl groups, so adsorption on metal ions on the interfaces of sulfide minerals and the interfaces of oxide minerals in nonferrous metals can be enhanced, and the recovery rate of nonferrous metal minerals in the nonferrous metal ores is greatly increased; the nonferrous metal mineral flotation collector is especially suitable for the metal recovery of mixed minerals containing both the sulfide minerals and the oxide minerals of the nonferrous metals; the recovery process of the nonferrous metals is simple, efficient and workable, and the industrial application requirement is met.

Description

technical field [0001] The invention relates to a non-ferrous metal ore flotation collector with a mercapto-hydroxamic acid group structure, a preparation method and application thereof, and belongs to the technical field of metal mineral flotation. Background technique [0002] Flotation is the most important method to recover metal minerals from metal ores, and flotation collector is one of the key technologies for the separation and extraction of valuable mineral components by flotation. The adsorption of flotation collectors on the mineral surface directly affects the hydrophobicity of the mineral surface and the flotation process. The development of new flotation collectors and the improvement of the hydrophobicity of mineral particles play an important role in improving the comprehensive recovery rate of metals. [0003] Mercapto compounds are good collectors for sulfide minerals, and hydroxamic acid-based compounds have good collector performance for oxidized mineral...

Claims

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Application Information

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IPC IPC(8): B03D1/014B03D101/02
Inventor 刘广义刘胜黄耀国
Owner 岳阳中科华昂精细化工科技有限公司
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