Sulfide flotation collector and preparation method

A technology of sulfide ore and collector, which is applied in flotation, solid separation, etc., can solve the problems of poor adaptability, achieve weak collection capacity, good selectivity, and improve the recovery rate of flotation

Inactive Publication Date: 2010-04-28
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned thiourethane collectors have their own characteristics, and generally show the advantages of good selectivity and low dosage, but their adaptability to

Method used

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  • Sulfide flotation collector and preparation method
  • Sulfide flotation collector and preparation method
  • Sulfide flotation collector and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1N, the preparation of N'-diethoxycarbonyl-O, O'-(1,2-ethylene) dithiocarbamate

[0024] 31 parts of 1,2-ethanediol plus acetone are configured into an ethylene glycol-acetone solution with a mass concentration of 30%, and slowly added to 131.2 parts of N-ethoxycarbonyl isothiocyanates in a three-necked flask. After the dropwise addition, the organic mixture continued to react at 45-50° C. for 4 hours, and the reaction was completed. After the solvent acetone was distilled off under reduced pressure, 158 parts of yellow product were obtained, which contained 143 parts of N, N'-diethoxycarbonyl-O, O'-(1,2-ethylene) dithiocarbamate, and the product purity was 90.5 %.

Embodiment 2

[0025] Embodiment 2N, the preparation of N'-diethoxyalkyl-O, O'-(1,4-butylene) dithiocarbamate

[0026] 45 parts of 1,4-butanediol plus acetone are configured into a butanediol-acetone solution with a mass concentration of 20%, and slowly added to 131.2 parts of N-ethoxycarbonyl isothiocyanates in a three-necked flask. After the dropwise addition, the organic mixture continued to react at 45-50° C. for 4 hours, and the reaction was completed. After the solvent acetone was distilled off under reduced pressure, 171 parts of yellow product were obtained, which contained 157 parts of N, N'-diethoxyalkyl-O, O'-(1,4-butylene) dithiocarbamate, and the product purity was 91.8% .

Embodiment 3

[0027] Embodiment 3N, the preparation of N'-dibutoxyalkyl-O, O'-(1,4-butylene) dithiocarbamate

[0028] Add 45 parts of 1,4-butanediol and tetrahydrofuran to form a butanediol-tetrahydrofuran solution with a mass concentration of 20%, and slowly add it to 159.3 parts of N-butoxycarbonyl isothiocyanates in a three-necked flask. After the dropwise addition, the organic mixture continued to react at 45-50° C. for 4 hours, and the reaction was completed. After the solvent tetrahydrofuran was distilled off under reduced pressure, 195 parts of yellow product were obtained, which contained 176 parts of N, N'-dibutoxyalkyl-O, O'-(1,4-butylene) dithiocarbamate, and the product purity was 90.3% .

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Abstract

A sulfide flotation collector is chemically named dialkyloxycarbonyl bisthionocarbamate and has a general molecular formula shown as formula (I). In the formula, R1 represents alkyl, aryl or aralkyl of C1-C8 and R2 represents alkylene of C2-C6 or ether-containing alkyl with the general formula being -R3-(OR4)n-, wherein R3 and R4 are respectively ethylidene or propylidene, and n is equal to 1-3. A preparation method of the sulfide flotation collector is characterized in that N-alkyloxycarbonyl isothiocyanates and a diol compound are subjected to addition reaction for 2-10h under reaction temperature of 20-80 DEG C. The synthetic method is simple and convenient. Being used as the sulfide collector, the compound with the structure of the formula (I) can efficiently recover valuable metal ores from the sulfide ores and the sulfide ores of associated precious metals and has the characteristics of high flotation efficiency and metal recovery, etc. The invention also relates to the preparation method of the collector.

Description

technical field [0001] The invention relates to a sulfide ore flotation collector-dihydrocarbonyl dithiocarbamate compound and a preparation method of the compound. Background technique [0002] Sulfide ore is the most important mineral resource type of non-ferrous metals and rare and precious metals. The research and development of new high-efficiency sulfide ore collectors plays an important role in improving the comprehensive utilization of complex sulfide ore resources. [0003] Since Dow Chemical Company of the United States first developed the thiourethane collector (O-isopropyl-N-ethyl thiocarbamate) under the trade name Z-200 in 1954, the thiourethane collector has been known as It has good selectivity, low dosage and convenient use, and has been widely used all over the world. However, the synthesis process of Z-200 thiourethane collector is directly restricted by the recovery and utilization of by-product thioglycolic acid, and its production scale is greatly rest...

Claims

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Application Information

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IPC IPC(8): B03D1/006B03D1/008B03D103/02B03D101/02
Inventor 钟宏袁露刘广义王帅夏柳荫
Owner CENT SOUTH UNIV
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