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A kind of ether-based thiourethane collector and its preparation and application method

A technology of thiourethane and collector, which is applied in the direction of solid separation and flotation, can solve the problem of no ether-based thiourethane, and achieve the effects of reduced dosage, effective separation, and strong collection capacity

Active Publication Date: 2016-06-29
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant report on ether thiocarbamate

Method used

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  • A kind of ether-based thiourethane collector and its preparation and application method
  • A kind of ether-based thiourethane collector and its preparation and application method
  • A kind of ether-based thiourethane collector and its preparation and application method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The synthesis of embodiment 1 ether group thiourethane collector MCTC-1

[0057] Add 65.6 parts of N-ethoxycarbonyl isothiocyanate intermediate to 54.1 parts of propylene glycol methyl ether, and stir at 60°C for 3 hours to obtain O-methoxyisopropyl-N-ethoxycarbonyl thiocarbamate and The product of propylene glycol methyl ether (code name: MCTC-1) has a product yield based on isothiocyanate of 85.34%, the content of ether-based thiourethane is 77.08%, and the content of propylene glycol methyl ether is 20.49%. After the product was separated and purified by silica gel column chromatography, O-methoxyisopropyl-N-ethoxycarbonylthiocarbamate was characterized. The pure product Mr: 221.27, and the MS detected by mass spectrometry: 221.8 [M+H] + , 243.9[M+Na] + . Infrared spectrum analysis and nuclear magnetic resonance analysis spectra are shown in figure 1 and Figure 11 , see Table 1 and Table 2 for the data.

Embodiment 2

[0058] The synthesis of embodiment 2 ether group thiourethane collector MCTC-2

[0059] Add 65.6 parts of N-ethoxycarbonyl isothiocyanate intermediate to 88.9 parts of dipropylene glycol methyl ether, and stir at 70°C for 3 hours to obtain ) product of isopropyl-N-ethoxycarbonyl thiocarbamate and dipropylene glycol methyl ether (code name: MCTC-2), the product yield based on isothiocyanate is 80.06%, and the content of ether group thiocarbamate is 73.00% %, the dipropylene glycol methyl ether content is 24.14%. After the product was separated and purified by silica gel column chromatography, O-(2-methoxy-1-methylethoxy) isopropyl-N-ethoxycarbonylthiocarbamate was characterized. The pure product Mr: 279.35, after Mass Spectrometry MS: 279.7[M+H] + 、301.9[M+Na] + . Infrared spectrum analysis and nuclear magnetic resonance analysis spectra are shown in figure 2 and Figure 12 , see Table 1 and Table 2 for the data.

Embodiment 3

[0060] The synthesis of embodiment 3 ether group thiourethane collector MCTC-3

[0061] Add 65.6 parts of N-ethoxycarbonyl isothiocyanate intermediate to 123.8 parts of tripropylene glycol methyl ether, and stir at 60°C for 5 hours to obtain O-[2-(2-methoxy-1-methyl Ethoxy)-1-(methylethoxy)]isopropyl-N-ethoxycarbonylthiocarbamate and tripropylene glycol methyl ether (code: MCTC-3), isothiocyanate-based products The yield is 81.93%, the content of O-[2-(2-methoxy-1-methylethoxy)-1-(methylethoxy)]isopropyl-N-ethoxycarbonylthiocarbamate It is 71.77%, and the content of tripropylene glycol methyl ether is 26.33%. After the product was separated and purified by silica gel column chromatography, O-[2-(2-methoxy-1-methylethoxy)-1-(methylethoxy)]isopropyl-N-ethoxy Characterized by carbonyl thiourethane, the pure product Mr: 337, detected by mass spectrometry MS: 337.8 [M+H] + 、360[M+Na] + . Infrared spectrum analysis and nuclear magnetic resonance analysis spectra are shown in ...

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Abstract

The invention discloses an ether-based thiourethane collector and its preparation and application method. The preparation method of the collector is as follows: taking N-alkoxycarbonyl isothiocyanate and ether alcohol compounds as raw materials, and reacting The temperature is 40-80°C, and the reaction time is 3-10 hours, and the addition reaction is carried out to generate ether-based thiourethane. The reaction requires no solvent, has simple operation, mild reaction conditions and high product yield. The prepared ether-based thiourethane collector has strong collection ability and good selectivity for copper sulfide minerals such as chalcopyrite, molybdenum-containing minerals, and precious metal minerals such as gold and silver, and has both foaming and dispersibility Well, the advantage of increased flotation efficiency and metal recovery.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and relates to an ether-based thiourethane collector and a preparation and application method thereof. Background technique [0002] Sulfur urethane compounds are important collectors for the flotation of sulfide ores, and are often used in the flotation of non-ferrous metal ores and precious metal ores, such as copper-bearing ores, molybdenum-containing ores, or ores containing gold or silver precious metals. Sulfururethane compounds have excellent chelation effect on copper, gold, silver and other metal ions, and have better selectivity than conventional sulfide ore collectors such as xanthate and black powder, and can realize valuable Effective separation of minerals and gangue minerals. [0003] At present, the thiourethane compounds used as flotation collectors mainly include hydrocarbyl thiourethane and N-alkoxycarbonyl thiourethane. Patent CN101890397A discloses a combined col...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/012B03D1/02B03D101/02
Inventor 钟宏王帅彭静刘广义曹占芳
Owner CENT SOUTH UNIV
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