Organic phosphoric acid compound, synthesis method of compound and application of compound as chalcopyrite collector

A technology of organic phosphoric acid and synthesis method, which is applied in the fields of organic chemistry, chemical instruments and methods, and compounds of elements of Group 5/15 of the periodic table, etc., can solve the problems of high cost of chemicals and weak selectivity, and achieve good flotation effect. , Improve the grade and recovery rate, the effect of low cost of raw materials

Active Publication Date: 2019-05-21
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For the separation process of chalcopyrite and pyrite in the prior art, traditional chalcopyrite collectors have problems such as weak selectivity and high reagent cost. The purpose of the present invention is to provide a kind of Organic phosphoric acid compounds, which have good selectivity to chalcopyrite, and avoid the use of pyrite and other gangue mineral inhibitors or auxiliary collectors, can effectively improve the grade and recovery rate of chalcopyrite concentrate

Method used

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  • Organic phosphoric acid compound, synthesis method of compound and application of compound as chalcopyrite collector
  • Organic phosphoric acid compound, synthesis method of compound and application of compound as chalcopyrite collector
  • Organic phosphoric acid compound, synthesis method of compound and application of compound as chalcopyrite collector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]Mix 1 mol of acetic acid and 1 mol of phosphorous acid into a four-necked flask equipped with a stirrer, dropping funnel and thermometer, and keep stirring. Slowly add 0.5 mol of phosphorus pentoxide during the stirring process, and raise the temperature to 120-160°C after adding the reagents. React for 1 to 3 hours; after the reaction, pass water vapor for hydrolysis, control the temperature at 120 to 140°C during hydrolysis, and react for 4 to 6 hours, while steaming out excess acetic acid; then dilute the obtained intermediate product to 65% and add 5.0g of peroxide Hydrogen, stirred and reacted at 100-120°C for 5 hours, after the reaction was completed, it was adsorbed and filtered with activated carbon, and finally sodium hydroxide and methanol were added to the filtrate to crystallize the sodium salt, and the product obtained was the organic phosphoric acid compound collector. The infrared spectrum of the collector is as figure 1 shown.

[0044] The organophosphor...

Embodiment 2

[0049] Mix 1 mol of acetic acid and 1 mol of phosphorous acid into a four-necked flask equipped with a stirrer, dropping funnel and thermometer, and keep stirring. Slowly add 0.5 mol of phosphorus pentoxide during the stirring process, and raise the temperature to 120-160°C after adding the reagents. React for 1 to 3 hours; after the reaction, pass water vapor for hydrolysis, control the temperature at 120 to 140°C during hydrolysis, and react for 4 to 6 hours, while steaming out excess acetic acid; then dilute the obtained intermediate product to 65% and add 5.0g of peroxide Hydrogen, stirred and reacted at 100-120°C for 5 hours, after the reaction was completed, it was adsorbed and filtered with activated carbon, and finally sodium hydroxide and methanol were added to the filtrate to crystallize the sodium salt, and the product obtained was the organic phosphoric acid compound collector. The infrared spectrum of the collector is as figure 1 shown.

[0050] The obtained orga...

Embodiment 3

[0054] Mix 1.5 mol of butyric acid and 1 mol of phosphorous acid into a four-necked flask equipped with a stirrer, dropping funnel and thermometer, and keep stirring. Slowly add 0.5 mol of phosphorus pentoxide during the stirring process, and raise the temperature to 120-160 ℃, react for 1~3h; after the reaction, pass water vapor for hydrolysis, control the temperature at 120~140℃ during hydrolysis, react for 4~6h, and remove excess butyric acid at the same time; then dilute the obtained intermediate product to 65% and add 6.5g Hydrogen peroxide, stirred and reacted at 100-120°C for 5 hours, after the reaction was completed, it was adsorbed and filtered with activated carbon, and finally sodium hydroxide and methanol were added to the filtrate to crystallize the sodium salt, and the product obtained was the organic phosphoric acid compound collector. The infrared spectrum of the collector is as figure 2 shown.

[0055] The obtained organophosphoric acid compounds were applie...

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Abstract

The invention discloses an organic phosphoric acid compound, a synthesis method of the compound and application of the compound as a chalcopyrite collector. The synthesis method of the organic phosphoric acid compound comprises the steps that an organic carboxylic acid compound and phosphorous acid are subjected to a condensation reaction under the function of phosphorus pentoxide, and a product of the condensation reaction is hydrolyzed by water vapor, separated and purified to obtain the compound. The organic phosphoric acid compound is used for the flotation of chalcopyrite, the selectivityof the compound is high, the agent use amount is small, the cost is low, flotation indexes are stable, and efficient flotation separation can be carried out on chalcopyrite and pyrite.

Description

technical field [0001] The invention relates to an organic phosphoric acid compound and a synthesis method thereof, and also relates to the application of an organic phosphoric acid compound as a chalcopyrite flotation collector in chalcopyrite flotation separation, belonging to the technical field of sulfide mineral flotation. Background technique [0002] Copper is a non-ferrous metal closely related to human beings. It has the advantages of high melting and boiling point, ductility, good thermal and electrical conductivity, etc. It is widely used in electrical, mechanical manufacturing, construction industry and national defense industry and other fields. The world is rich in copper ore resources, but with the rapid development of the national economy, the resources of easy-to-separate copper ores are gradually decreasing, and the development and utilization of difficult-to-separate copper ores have been paid more and more attention. [0003] There are many types of coppe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/38C22B15/00B03D1/014
Inventor 高志勇黄子杰王建军孙伟胡岳华邓建
Owner CENT SOUTH UNIV
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