Application of aminotriazolethione compound serving as metal sulfide mineral surface modification agent

A technology of aminotriazolethione and surface modifier, which is applied in solid separation, flotation, etc., to achieve the effect of small dosage, efficient separation and enhanced hydrophilicity

Active Publication Date: 2017-08-11
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, only the reports that aminotriazolethione heterocyclic compounds can be used as flotation collectors are mentioned in the literature; however, there are no reports showing that such compounds can be used as inhibitors for the separation of molybdenum sulfide and non-molybdenum sulfide minerals. agent

Method used

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  • Application of aminotriazolethione compound serving as metal sulfide mineral surface modification agent
  • Application of aminotriazolethione compound serving as metal sulfide mineral surface modification agent
  • Application of aminotriazolethione compound serving as metal sulfide mineral surface modification agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of thioformyl dihydrazine

[0029] Add a certain amount of hydrazine hydrate and 2-chloroethanol into a three-necked flask equipped with a stirrer, a thermometer, a dropping funnel, and a condenser, and place the three-necked flask in a constant temperature water bath at 0-5°C. Slowly add a certain amount of carbon disulfide dropwise, the dropwise addition is completed within 1 hour, and the temperature is controlled not to exceed 20°C until yellow crystals are precipitated. Add a certain amount of lye, heat up and reflux for several hours, and treat the tail gas with lye. After cooling to room temperature, an off-white product was obtained, which was filtered and dried to obtain thioformyl dihydrazine.

[0030] Preparation of 4-amino-1,2,4-triazole-5-thione

[0031]In a 250mL three-necked flask, add 0.1mol (10.6g) of thioformyl dihydrazide, add a certain amount of deionized water, and add concentrated hydrochloric acid to adjust the pH to 5-7, place the t...

Embodiment 2

[0034] Using 4-amino-1,2,4-triazole-5-thione as an inhibitor, the flotation separation experiment was carried out on copper-molybdenum mixed flotation coarse concentrate in a concentrator in Henan. Its test procedure is as follows Figure 4 As shown, the results are shown in Table 1.

[0035] Table 1. 4-Amino-1,2,4-triazole-5-thione flotation test results

[0036]

Embodiment 3

[0038] Preparation of 4-amino-3-(2-hydroxy-2,3-dicarboxy)propyl-1,2,4-triazole-5-thione

[0039] In a 250mL three-necked flask, add 0.1mol (10.6g) of thioformyl dihydrazine, add a certain amount of deionized water, and add concentrated hydrochloric acid to adjust the pH to 5-7, place the three-necked flask in a water bath and heat it to 100 At °C, an equivalent amount of citric acid (19.2 g) aqueous solution was started to be added dropwise. The dropwise addition was completed within 0.5h, and the temperature was refluxed for 2h. After the reaction was finished, the temperature was lowered and cooled, crystals were precipitated, filtered and washed with cold deionized water,

[0040] Dry to obtain a solid product. Calculated by thioformyl dihydrazide, the yield is 81%;

[0041] 4-Amino-3-(2-hydroxy-2,3-dicarboxy)propyl-1,2,4-triazole-5-thione product structure formula:

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Abstract

The invention discloses application of an aminotriazolethione compound serving as a metal sulfide mineral surface modification agent. The aminotriazolethione compound comprises a hydrophilic modification perssad and an aminotriazolethione perssad at the same time. The aminotriazolethione compound mainly serves as the non-molybdenum sulfide mineral surface modification agent for flotation separation of the molybdenum sulfide mineral and the non-molybdenum sulfide mineral, the hydrophilia of the surfaces of the sulfide minerals with the natural hydrophobicity can be enhanced, especially, the hydrophilia of the surfaces of copper pyrites, chalcocite, galena, blende, brasses, the bismuth sulfide mineral and other non-molybdenum sulfide minerals can be effectively improved, and efficient flotation separation of the molybdenum sulfide mineral and the non-molybdenum sulfide mineral is achieved.

Description

technical field [0001] The invention relates to an application method of an aminotriazolethione compound, in particular to the application of a hydrophilic group-modified triazolethione compound as a surface modifier for non-molybdenum sulfide minerals, and belongs to the technical field of mineral processing. Background technique [0002] 1,2,4-Triazole derivatives are a very important series of compounds in the family of thiocarbohydrazide derivatives. The preparation and application of their derivatives have attracted the attention of many scientific researchers. The main reason is that through Thiocarbohydrazide can prepare heterocyclic compounds containing nitrogen, oxygen and sulfur. These compounds and their transition metal complexes have special properties, and current research has involved many fields, such as biological activity, nonlinear optical properties (NLO), photoelectric properties, corrosion resistance, heavy metal ion adsorbents, catalysts, and the prepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012B03D101/06B03D103/02
CPCB03D1/012B03D2201/06B03D2203/02
Inventor 孙伟殷志刚胡岳华张谌虎管青军
Owner CENT SOUTH UNIV
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