Alkyl ether dithiophosphate collecting agent and preparation method and application thereof

A technology of alkyl ether-based dithiophosphate and alkyl ether-based dithiophosphoric acid, which is applied in solid separation, flotation and other directions, can solve the problem of low collection effect, inability to meet comprehensive utilization of mineral resources, single species, etc. problem, to achieve the effect of weak collecting ability, good foam mineralization effect and resource saving effect

Active Publication Date: 2021-11-23
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen from this that the existing dithiophosphate collectors are relatively single in type. The need for comprehensive utilization of resources
At present, there are no relevant reports on the use of alkyl ether-based dithiophosphate collectors in mineral flotation.

Method used

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  • Alkyl ether dithiophosphate collecting agent and preparation method and application thereof
  • Alkyl ether dithiophosphate collecting agent and preparation method and application thereof
  • Alkyl ether dithiophosphate collecting agent and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Preparation of two (2-butoxyethyl) ammonium thiophosphate collectors:

[0047]Add 23.64 parts of ethylene glycol n-butyl ether into the reactor, and slowly add 13.08 parts of phosphorus pentasulfide, raise the temperature to about 85°C, and react for 3 hours while stirring, and a black oily liquid is obtained from the reaction. Use a constant pressure dropping funnel to load 6.81 parts of ammonia solution with a concentration of 25%, and slowly drop it into the reactor. The reaction is violent. After the reaction is over, a white precipitate is formed. The white solid obtained by filtering and decompressing distillation is di (2-Butoxyethyl)ammonium thiophosphate.

[0048] The obtained two (2-butoxyethyl) ammonium thiophosphate is characterized after purification, and its nuclear magnetic resonance 1 H. 13 C and 31 P picture see respectively figure 1 , figure 2 and image 3 , see the infrared spectrum Figure 4 , the NMR analysis of the target product is shown i...

Embodiment 2

[0055] Preparation of two (2-butoxyethyl) ammonium thiophosphate collectors:

[0056] Add 118.17 parts of ethylene glycol n-butyl ether into the reactor, and slowly add 60.4 parts of phosphorus pentasulfide, raise the temperature to about 90°C, and react for 4 hours while stirring, and the reaction will give a black oily liquid. Filling 34.06 parts of concentration with constant pressure dropping funnel is 25% aqueous ammonia solution, slowly drips in the reactor, reacts violently, treats that reaction finishes, has white precipitation to generate, and the white solid that filters, decompression distillation obtains is two ( 2-butoxyethyl) ammonium thiophosphate.

Embodiment 3

[0058] Preparation of two (2-propoxyethyl) ammonium thiophosphate collectors:

[0059] Add 63.12 parts of ethylene glycol propyl ether into the reactor, and slowly add 33.68 parts of phosphorus pentasulfide, raise the temperature to 90°C, and react for 5 hours while stirring, and the reaction gives a black-green oily liquid. Use a constant pressure dropping funnel to load 20.44 parts of ammonia solution with a concentration of 25%, slowly drip it into the reactor, the reaction is violent, after the reaction is finished, a white precipitate is formed, and the white solid obtained by filtering and vacuum distillation is distillate. Ammonium (2-propoxyethyl)thiophosphate.

[0060] The obtained two (2-propoxyethyl) ammonium thiophosphate is characterized after purification, and its nuclear magnetic resonance 1 H. 13 C and 31 P picture see respectively Figure 5 , Figure 6 and Figure 7 , see the infrared spectrum Figure 8 , the NMR analysis of the target product is shown ...

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Abstract

The invention belongs to the technical field of mineral flotation, and particularly relates to an alkyl ether dithiophosphate collecting agent and a preparation method and application thereof. According to the invention, the ether alcohol compound and phosphorus pentasulfide react for the first time to obtain the dithiophosphate collecting agent containing the ether functional group. The collecting agent has a certain foaming property, can remarkably improve the flotation efficiency and the metal flotation recovery rate, is an excellent collecting agent for non-ferrous metal sulfide minerals, and is wide in preparation raw material source, simple in process and easy to industrialize. When the collecting agent is compounded with a traditional collecting agent, the flotation performance of sulfide ore can be further improved.

Description

technical field [0001] The invention belongs to the technical field of mineral flotation, and in particular relates to an alkyl ether-based dithiophosphate collector and its preparation method and application. Background technique [0002] Dialkyl dithiophosphoric acid (salt), commonly known as "black medicine", is second only to xanthate in use, and is an important collector for sulfide ore flotation, and is often used in the flotation of non-ferrous metal sulfide ores. Black medicine has a strong ability to collect chalcopyrite and galena, but a poor ability to collect pyrite, and has good flotation selectivity. It also has a certain foaming performance, which can reduce or not use other regulators , The amount of foaming agent used to reduce the cost of chemicals, as an auxiliary collector or foaming agent to improve the recovery rate of non-ferrous metal sulfide ore. [0003] In the prior art, dithiophosphate collectors as flotation collectors mainly include alcohol bla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/014B03D101/02B03D103/02
CPCB03D1/014B03D2201/02B03D2203/02Y02P10/20
Inventor 钟宏邹松王帅马鑫
Owner CENT SOUTH UNIV
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