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Double-ligand thiourea collecting agent and preparation thereof and application thereof in metal ore floatation

A dual ligand and collector technology, applied in flotation, solid separation, etc., can solve the problems of insufficient mineral surface action, poor dispersion, weakened flotation performance, etc., to improve the comprehensive recovery rate of metals, flotation The effect of improving the recovery rate and reducing the dosage of inhibitors

Inactive Publication Date: 2013-05-01
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing dithiourea collectors have a high melting point, cannot be well dispersed in the pulp, and have insufficient interaction with the mineral surface, which weakens their flotation performance

Method used

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  • Double-ligand thiourea collecting agent and preparation thereof and application thereof in metal ore floatation
  • Double-ligand thiourea collecting agent and preparation thereof and application thereof in metal ore floatation
  • Double-ligand thiourea collecting agent and preparation thereof and application thereof in metal ore floatation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1N, the preparation of N'-diethylene glycol ester group-N ", N "'-dimethoxypropyl dithiourea

[0031] In an aqueous solution containing 277 parts of N,N'-diethylene glycol diisothiocyanate, slowly drop in an aqueous solution containing 180 parts of methoxypropylamine with a concentration of 30%, at about 0°C to 10°C Stir the reaction for 2 hours, and then react at room temperature for 30 minutes. During the reaction, the color of the solution gradually changes from orange red to yellow, and 445 parts of N,N'-diethylene glycol-N",N"'-dimethoxy Propyl dithiourea, the yield is 98%.

Embodiment 2

[0032] Embodiment 2N, the preparation of N'-diethylene glycol-N ", N "'-diethoxypropyl dithiourea

[0033] The test conditions are the same as in Example 1, except that 180 parts of methoxypropylamine in Example 1 are replaced with 208 parts of ethoxypropylamine to obtain 480 parts of N,N'-diethylene glycol-N",N"' -diethoxypropyl dithiourea, the yield is 99%.

Embodiment 3

[0034] Embodiment 3N, the preparation of N'-diethylene glycol ester group-N ", N "'-dimethylethoxypropyl dithiourea

[0035] The test conditions are the same as in Example 1, except that 180 parts of methoxypropylamine in Example 1 are replaced with 266 parts of methylethoxypropylamine to obtain 532 parts of N,N'-diethylene glycol-N",N"' -Dimethylethoxypropyl dithiourea, the yield is 98%.

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Abstract

The invention discloses a double-ligand thiourea collecting agent, i.e., an N,N'-alkylenedioxycarbonyl-N'',N'''-dialkoxyl-propyl-dithiourea compound, and a preparation method thereof and an application of the double-ligand thiourea collecting agent in metal ore floatation. The application is characterized in that the N,N'-alkylenedioxycarbonyl-N'',N'''-dialkoxylpropyldithiourea compound which is shown as a formula (I) and is taken as a collecting agent is used for effectively floating and recovering valuable metal minerals from non-ferrous metal ore and noble metal ore. In the formula (I), R1 represents alkyl, aryl or aralkyl with 1-16 carbon atoms, or R3OR4; R3 represents alkyl with 1-3 carbon atoms; R4 represents alkylidene, aryl or aromatic alkylidene with 1-16 carbon atoms; R2 represents alkylene with 2-18 carbon atoms or ether-containing hydrocarbyl of which the general formula is -R5-(OR5)n-; in the formula, R5 represents ethylidene or propylidene; n=1-4; and R1 and R2 are independent of each other.

Description

[technical field] [0001] The present invention relates to a double-ligand thiourea collector——N,N'-alkylenedioxycarbonyl-N", N"'-dialkoxypropyl dithiourea compound and its preparation method, as well as Application in metal ore flotation. [Background technique] [0002] Flotation is the most important method to recover metal minerals from metal ores, and flotation collector is one of the key technologies for the separation and extraction of valuable mineral components by flotation. Hydrophilic-hydrophobic balance, dispersibility in water, and mineral affinity are important properties of flotation collectors, which directly affect the adsorption and flotation process of collectors on mineral surfaces. With the development of lean, fine and hybrid mineral resources, the development of new high-efficiency flotation collectors plays an important role in improving the comprehensive recovery rate of metals. [0003] Thiourea compounds have become an important class of mineral fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012B03D101/02
Inventor 刘广义任恒肖静晶钟宏王帅曹占芳
Owner CENT SOUTH UNIV
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