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Double-ligand collecting agent and preparation and application thereof

A collector, dithiourea technology, applied in solid separation, organic chemistry, flotation, etc., can solve the problems of insufficient mineral surface action, inability to disperse well, and high melting point of the collector, and improve the comprehensive recovery of metals. efficiency, reducing the dosage of inhibitors, and the effect of strong harvesting ability

Inactive Publication Date: 2013-04-17
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing dithiourea or thiourethane thiourea complex compound collectors have a high melting point and cannot be well dispersed in the pulp, resulting in insufficient interaction with the mineral surface and weakening their flotation performance.

Method used

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  • Double-ligand collecting agent and preparation and application thereof
  • Double-ligand collecting agent and preparation and application thereof
  • Double-ligand collecting agent and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1N, the preparation of N'-diisooctyloxycarbonyl-N ", N "'-isopropylidene dithiourea

[0031] In an aqueous solution containing 431 parts of N-isooctyloxycarbonyl isothiocyanate, slowly drop into an aqueous solution containing 230 parts of polyetheramine D-230 with a concentration of 30%, and stir and react at 0°C to 10°C for 2 hours. Then react at room temperature for 30 minutes to obtain 647 parts of N,N'-diisooctyloxycarbonyl-N",N"'-isopropylidene dithiourea with a yield of 98%.

Embodiment 2

[0032] Example 2N, N'-diethoxycarbonyl-N", the preparation of O-ethylene ether group thiourethane thiourea complex base compound

[0033] In the n-hexane solution containing 262 parts of N-ethoxycarbonyl isothiocyanate, slowly drop 105 parts of diglycolamine, stir and react at 0°C to 15°C for 2 hours, then raise the temperature to 55°C for 2 hours, 356 parts of N,N'-diethoxycarbonyl-N",O-ethylene ether thiocarbamate thiourea were obtained with a yield of 97%.

Embodiment 3

[0034] Embodiment 3N, the preparation of N'-dibutyryl-N ", N "'-ethylene ether group dithiourea

[0035] In the n-hexane solution containing 259 parts of N-butyryl isothiocyanate, slowly drop into the n-hexane solution containing 104 parts of 2,2'-oxybis(ethylamine), and stir the reaction at 0 ° C ~ 25 ° C 2 hours, and then raised the temperature to 45°C for 2 hours to obtain 348 parts of N,N'-dibutyryl-N",N"'-ethylene ether dithiourea with a yield of 96%.

[0036] (2) Application of ether-based dithiourea or thiourethane-thiourea complex compound in metal ore flotation

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PUM

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Abstract

The invention discloses a double-ligand collecting agent-ether double thiourea or ethionine ester thiourea composite-radical compound and preparation and application thereof. The ether double thiourea or ethionine ester thiourea composite-radical compound shown as a formula (I) is used as a collecting agent for metal ore flotation, wherein R1 refers to an acyl radical with the general formula of R3-C(=O)- or an ester group with the general formula of R4O-C(=O)-, R3 and R4 respectively refer to C1-C8 alkyl radicals, R2 refers to hydrogen or methyl, X refers to O or NH, and n refers to 1-6. The compound with the structure shown as the formula (I) is used as the flotation collecting agent to efficiently recover value metal from nonferrous metal ores and precious metal ores. Flotation separation and extraction of the nonferrous metal ores and precious metal ores can be enhanced by the ether double thiourea or ethionine ester thiourea composite-radical compound. The melting point of the collecting agent can be lowered, dispersity of the collecting agent in aqueous solution is improved, adsorption of the collecting agent on the surfaces of ores is promoted, and flotation efficiency is improved while metal recovery rate is increased.

Description

[technical field] [0001] The present invention relates to a double-ligand collector with a new structure—ether-based dithiourea or thiourethane-thiourea complex-based compound, and its 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, dispersibility in water, and oreophilicity 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 and thiourethane compounds have become an important class of mineral flotation colle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012C07C335/26C07C335/28B03D101/02
Inventor 刘广义肖静晶王勇泉钟宏王帅曹占芳
Owner CENT SOUTH UNIV
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