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Method for synthesizing novel industrial copper extracting agent

The technology of a copper extractant and synthesis method, which is applied in the directions of oxime preparation and organic chemistry, can solve problems such as high price and achieve the effect of low production cost.

Inactive Publication Date: 2012-11-28
JIANGXI UNIV OF SCI & TECH
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Problems solved by technology

[0002] At present, the copper extractant used in my country's industry mainly relies on imports, which is not only expensive, but also needs to be adjusted according to the characteristics of my country's copper ore resources. It can be said that my country's hydrometallurgy copper process has not really gotten rid of the monopoly of foreign technology.

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  • Method for synthesizing novel industrial copper extracting agent

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Experimental program
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Effect test

Embodiment 1

[0015] Step 1: Add 8.6g of linear alkylbenzene (take dodecylbenzene as an example), 13.0g of monoethyl oxalate chloride and 50.0ml of dichloromethane into a dry 250mL three-necked flask, stir at low temperature for 30min to obtain deep Yellow homogeneous system, then add 15.2g of catalyst (take anhydrous aluminum trichloride as an example) into the three-necked flask in batches within 2h, then keep the temperature at 5°C and react for 8h. After the reaction, the reaction solution was slowly poured into 150mL concentrated hydrochloric acid and water (V 浓盐酸 :V 水 =1:1) for acid hydrolysis, the acid hydrolysis temperature does not exceed 20°C, after the acid hydrolysis is complete, transfer it to a separatory funnel, wash with 20mL water each time until the water is nearly neutral, and use 30 mL of dichloromethane was extracted three times, the aqueous phase was discarded, and the organic phases were combined. The organic phase was dried with anhydrous magnesium sulfate for 4 h....

Embodiment 2

[0018] Step 1: Add 8.6g of linear alkylbenzene (take dodecylbenzene as an example), 13.0g of monoethyl oxalate chloride and 50.0ml of dichloromethane into a dry 250mL three-necked flask, stir at low temperature for 30min to obtain deep Yellow homogeneous system, then add 16.5g of catalyst (take anhydrous aluminum trichloride as an example) into the three-necked flask in batches within 2h, then, maintain the temperature at 10°C, and react for 8h. After the reaction, the reaction solution was slowly poured into 150mL concentrated hydrochloric acid and water (V 浓盐酸 :V 水 =1:1) for acid hydrolysis, the acid hydrolysis temperature does not exceed 20°C, after the acid hydrolysis is complete, move it to a separatory funnel, wash it with 100mL of water for several times, until the water is nearly neutral, and let it stand The liquid was separated, and the aqueous phase was extracted three times with 30 mL of dichloromethane, the aqueous phase was discarded, and the organic phases were...

Embodiment 3

[0021] Step 1: Add 8.6g of linear alkylbenzene (take dodecylbenzene as an example), 13.0g of monoethyl oxalate chloride and 50.0ml of dichloromethane into a dry 250mL three-necked flask, stir at low temperature for 30min to obtain deep Yellow homogeneous system, then add 16.5g of catalyst (take anhydrous aluminum trichloride as an example) into the three-necked flask in batches within 2h, then keep the temperature at 20°C and react for 8h. After the reaction, the reaction solution was slowly poured into 150mL concentrated hydrochloric acid and water (V 浓盐酸 :V 水 =1:1) for acid hydrolysis, the acid hydrolysis temperature does not exceed 20°C, after the acid hydrolysis is complete, move it to a separatory funnel, wash it with 100mL of water for several times, until the water is nearly neutral, and let it stand The liquid was separated, and the aqueous phase was extracted three times with 30 mL of dichloromethane, the aqueous phase was discarded, and the organic phases were combi...

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Abstract

The invention relates to a method for synthesizing a novel industrial copper extracting agent. The method comprises the following steps of: 1, performing synthesis by taking acylating agents of straight-chain alkylbenzene, ethyl chloroformylformate and the like as raw materials through acylation reaction under the catalytic action of lewis acid or a solid acid catalyst to form para-alkyl benzoyl ethyl formate (a); and 2, performing synthesis on the para-alkyl benzoyl ethyl formate (a) synthesized by the step 1 and hydroxylamine hydrochloride by hydrolysis reaction and oximation reaction under the alkaline condition to form carboxylic oxime (which is a copper extracting agent). Compared with copper extracting agents which are used industrially at present, the industrial copper extracting agent synthesized by the method has the advantages that the industrial copper extracting agent can be used under the high-acidity condition, the extraction capacity, the degree of separation of copper and iron and the reextraction performance of the industrial copper extracting agent are superior or equal to the copper extracting agents, and the production cost of the industrial copper extracting agent is lower than that of hydroxyl oxime extracting agents. In addition, by the synthetic process, the requirements of energy conservation, consumption reduction and environment friendliness also can be met.

Description

technical field [0001] The invention relates to a synthesis method of a novel industrial copper extractant for recovering copper from copper ore leaching liquid. Background technique [0002] At present, the copper extractant used in my country's industry mainly depends on imports. It is not only expensive, but also needs to be adjusted according to the characteristics of my country's copper ore resources. It can be said that my country's hydrometallurgy copper process has not really gotten rid of the monopoly of foreign technology. Research and explore the use of domestic chemical products as raw materials to develop a new type of copper extractant that is suitable for the characteristics of my country's copper ore resources, with high efficiency, low cost, and environmental protection requirements, which will help improve the level of my country's wet copper smelting technology and make full use of existing copper Resources produce better economic and social benefits, and i...

Claims

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Application Information

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IPC IPC(8): C07C251/40C07C249/08
Inventor 张彩霞陆明刘云派舒庆李斌寿
Owner JIANGXI UNIV OF SCI & TECH
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