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O-alkyl-S-hydroxyalkyl-xanthate collecting agent, and preparation and application thereof

A xanthate ester and collector technology, applied in solid separation, flotation, etc., can solve the problems of unsatisfactory selectivity and dispersibility, achieve excellent flotation performance, increase carbon chain length, and enhance floatability Effect

Active Publication Date: 2018-11-02
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the unsatisfactory selectivity and dispersibility defects of xanthate and xanthate in the flotation of non-ferrous metal sulfide ore in the prior art, the object of the present invention is to provide a kind of O-alkyl-S-hydroxyl Alkyl xanthate collector (the present invention is also referred to as O-alkyl-S-hydroxyalkyl xanthate or collector)

Method used

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  • O-alkyl-S-hydroxyalkyl-xanthate collecting agent, and preparation and application thereof
  • O-alkyl-S-hydroxyalkyl-xanthate collecting agent, and preparation and application thereof
  • O-alkyl-S-hydroxyalkyl-xanthate collecting agent, and preparation and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0058] Embodiment 1: Preparation of O-isopropyl-S-hydroxyethyl xanthate

[0059] Add 8.13 parts of 2-chloroethanol with a purity of 99% into the reactor, add 18.9 parts of sodium isopropylxanthate with a purity of 83.54% in batches, stir while adding, then add 15 parts of distilled water, and heat up to the bottle The temperature is 60°C, after 5 hours of constant temperature reaction, cool to room temperature, and separate the liquid to obtain the oil phase O-isopropyl-S-hydroxyethyl xanthate. The analysis shows that O-isopropyl-S-hydroxyethyl xanthate The yield of acid ester was 88.3%. When the reaction does not add distilled water as a solvent, the yield of the product O-isopropyl-S-hydroxyethyl xanthate is 68.75%. After the product is purified by column chromatography, the O-isopropyl-S-hydroxyethyl xanthate 1 HNMR picture as shown figure 1 As shown, the infrared spectrum is shown in image 3 shown.

Embodiment 2

[0060] Embodiment 2: the preparation of O-isobutyl-S-hydroxyethyl xanthate

[0061] Add 8.13 parts of 2-chloroethanol with a purity of 99% into the reactor, add 19.32 parts of sodium isobutyl xanthate with a purity of 89.0% in batches, stir while adding, then add 15 parts of distilled water, and heat up to the bottle The temperature is 50°C, after 7 hours of constant temperature reaction, cool to room temperature, and separate the liquid to obtain the oil phase O-isobutyl-S-hydroxyethyl xanthate. The analysis shows that O-isobutyl-S-hydroxyethyl xanthate The yield of acid ester was 78.2%. When the reaction time is 3 hours, the yield of the product O-isobutyl-S-hydroxyethyl xanthate is 23.20%. O-isobutyl-S-hydroxyethyl xanthate 1 HNMR picture as shown figure 2 As shown, the infrared spectrum is shown in Figure 4 shown.

Embodiment 3

[0062] Embodiment 3: the preparation of O-n-butyl-S-hydroxyethyl xanthate

[0063] Add 8.13 parts of 2-chloroethanol with a purity of 99% into the reactor, add 18.7 parts of sodium n-butyl xanthate with a purity of 92.1% in batches, stir while adding, then add 15 parts of distilled water, and heat up to the bottle The temperature is 50°C, after 7 hours of constant temperature reaction, cool to room temperature, and separate the liquid to obtain the oil phase O-isobutyl-S-hydroxyethyl xanthate. The analysis shows that O-isobutyl-S-hydroxyethyl xanthate The yield of acid ester is 77.34%.

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Abstract

The invention belongs to the technical field of ore floatation, in particularly discloses an O-alkyl-S-hydroxyalkyl-xanthate collecting agent. An esterification reaction is carried out with water as solvent, and with alkyl group or alkyl sulphanyl xanthogenate and halogenated alkyl alcohol as raw materials for preparation to obtain O-alkyl-S-hydroxyalkyl-xanthate. A preparation method of the O-alkyl-S-hydroxyalkyl-xanthate is easy to operate and good in reaction effect. The floatation collecting agent has the extremely high chelation capacity of the xanthogenate, and the foaming performance ofhydroxyl, and the action of the collecting agent on metal ions on the surfaces of ore can be well improved. The prepared collecting agent has high capture capacity and selectivity on sulphide ore such as copper sulphide ore, copper molybdenum ore and lead zinc ore, and shows good floatation indexes.

Description

technical field [0001] The invention relates to a new structure O-alkyl-S-hydroxyalkyl xanthate collector, which is applied to the flotation of metal minerals. Background technique [0002] Sulfide ore is the most important mineral resource type of non-ferrous metals and rare and precious metals. At present, almost all sulfide ore resources in the world are processed by flotation. High-efficiency collectors are the key to the efficient development and utilization of sulfide ores. Since 1925, Keller first used xanthate as a sulfide ore collector. It has been widely used to recover metal sulfide minerals. So far, xanthate is still the most widely used, largest and most economical sulfide ore in the mineral processing industry. Collector. [0003] Xanthate is a derivative of xanthate, which has high activity for copper, zinc, lead and other sulfide ores, and is a highly selective flotation collector. Chinese patent CN102806150A discloses a flotation collector for the separati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012B03D103/02B03D101/02
CPCB03D1/012B03D2201/02B03D2203/02
Inventor 钟宏黄小平王帅曹占芳
Owner CENT SOUTH UNIV
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