N,N-dialkyl-S-hydroxyalkyl-dithiocarbamate collecting agent and preparation method and application thereof

A technology of dithiocarbamate and hydroxyalkyl is used in N,N-dialkyl-S-hydroxyalkyl-dithiocarbamate collectors and the fields of preparation and application thereof, achieving Good reaction effect, improved dispersion and high selectivity

Active Publication Date: 2018-10-12
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The application of N, N-dialkyl-S-hydroxyalkyl-dithiocar

Method used

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  • N,N-dialkyl-S-hydroxyalkyl-dithiocarbamate collecting agent and preparation method and application thereof
  • N,N-dialkyl-S-hydroxyalkyl-dithiocarbamate collecting agent and preparation method and application thereof
  • N,N-dialkyl-S-hydroxyalkyl-dithiocarbamate collecting agent and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0056] Embodiment 1: the preparation of N, N-dimethyl-S-hydroxyethyl-dithiocarbamate

[0057] Add 30.65 parts of carbon disulfide with a purity of 99% into a three-necked flask, add 4.38 parts of sodium hydroxide with a purity of 96% in batches under ice bath, stir mechanically, then add 11.27 parts of an aqueous solution of dimethylamine with a purity of 40%, dropwise The time is 40 minutes, the dropping process controls the temperature not to exceed 10°C, and then the temperature is raised to 15°C in the bottle, and after constant temperature reaction for 1 hour, 8.13 parts of 2-chloroethanol with a purity of 99% are added, and the temperature in the bottle is raised to 50°C. After constant temperature reaction for 5 hours, it was cooled to room temperature. Wash 3 times with 100mL deionized water, then extract with 100mL dichloromethane, separate the liquid to obtain an oily phase liquid, then treat it with anhydrous sodium sulfate overnight, spin evaporate and separate and...

Embodiment 2

[0058] Embodiment 2: the preparation of N, N-diethyl-S-hydroxyethyl-dithiocarbamate

[0059] Add 30.65 parts of carbon disulfide with a purity of 99% into a three-necked flask, add 4.38 parts of sodium hydroxide with a purity of 96% in batches under an ice bath, stir mechanically, then add 5.4 parts of deionized water dropwise, and then add 7.39 parts of 99% pure water dropwise. % of diethylamine, the dropping time is 40 minutes, the dropping process controls the temperature not to exceed 10°C, then raises the temperature to 15°C in the bottle, and adds 8.13 parts of 2-chloroethanol with a purity of 99% after 1 hour of constant temperature reaction, and heats up When the temperature in the bottle was 50°C, after 5 hours of constant temperature reaction, it was cooled to room temperature. Wash 3 times with 100mL deionized water, then extract with 100mL dichloromethane, separate the liquid to obtain an oil phase liquid, then treat it with anhydrous sodium sulfate overnight, and ...

Embodiment 3

[0060] Embodiment 3: Preparation of N, N-di-n-propyl-S-hydroxyethyl-dithiocarbamate

[0061] Add 30.65 parts of carbon disulfide with a purity of 99% into a three-necked flask, add 4.38 parts of sodium hydroxide with a purity of 96% in batches under an ice bath, stir mechanically, then dropwise add 5.4 parts of deionized water, and then add dropwise 10.22 parts of a purity of 99% % of di-n-propylamine, the dropping time is 40 minutes, the dropping process controls the temperature not to exceed 10°C, and then raises the temperature to 15°C in the bottle, and after constant temperature reaction for 1 hour, add 8.13 parts with a constant pressure dropping funnel with a purity of 99% 2-chloroethanol, control the reaction temperature to be 50°C, cool to room temperature after reacting for 5 hours, separate the liquid to obtain the oil phase N, N-di-n-propyl-S-hydroxyethyl-dithiocarbamate, use Wash with 100 mL of deionized water for 3 times, then extract with 100 mL of dichlorometha...

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Abstract

The invention discloses a N,N-dialkyl-S-hydroxyalkyl-dithiocarbamate collecting agent and a preparation method and an application thereof. The collecting agent is N,N-dialkyl-S-hydroxyalkyl-dithiocarbamate which is synthesized by a one-pot process by taking carbon disulfide and water as a solvent, and diamine, carbon disulfide, sodium hydroxide and haloalkyl alcohol as raw materials. The preparation method is simple to operate and mild in reaction condition. The floating collecting agent has a good collecting property, and the action of the collecting agent with metal ions on the surfaces of minerals can be improved well. The prepared collecting agent has a relatively good collecting ability and selectivity to sulphide ores such as copper sulphide ores, copper-molybdenum cores and lead zinc ores, and shows a relatively good floating index.

Description

technical field [0001] The invention relates to a new structure N, N-dialkyl-S-hydroxyalkyl-dithiocarbamate collector, its preparation method and its application in metal mineral flotation. Background technique [0002] Dialkyldithiocarbamate is a class of compounds with a wide range of uses, and can be used in rubber, petroleum, agriculture, mining, medicine and other fields. Patent USP5019284 discloses a class of dialkyl dithiocarbamate derivatives containing phosphate groups, which are applied to lubricating oil additives. Patent CN107556224A discloses a dialkyl dithiocarbamate, which is combined with alkenyl succinic acid derivatives in a certain proportion to form an anti-wear and anti-rust composite agent. Patent CN107737126A discloses the application of a coumarin-dithiocarbamate derivative in the treatment of Alzheimer's disease, cerebrovascular dementia, glaucoma and other diseases. Patent CN1615301A discloses the preparation of a dithiocarbamate and its applicati...

Claims

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Application Information

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IPC IPC(8): B03D1/012B03D101/02B03D103/02
Inventor 钟宏黄小平王帅曹占芳
Owner CENT SOUTH UNIV
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