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
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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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