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Agent and method for flotation separation of chalcopyrite-iron sulfide minerals

A separation method and flotation reagent technology, applied in flotation, solid separation and other directions, can solve the problems of weak selectivity and high reagent cost, and achieve the effect of low raw material cost, obvious environmental protection advantages, and improved sorting effect.

Active Publication Date: 2022-03-01
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the weak selectivity of traditional chalcopyrite collectors and the high cost of reagents in the separation of chalcopyrite and pyrite, the object of the present invention is to provide a method for flotation separation of chalcopyrite-iron sulfide minerals, aiming at Provide a lime-free method for the selective separation of chalcopyrite-iron sulfide minerals

Method used

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  • Agent and method for flotation separation of chalcopyrite-iron sulfide minerals
  • Agent and method for flotation separation of chalcopyrite-iron sulfide minerals
  • Agent and method for flotation separation of chalcopyrite-iron sulfide minerals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This case uses combined collectors for chalcopyrite or pyrite flotation:

[0045] The mixed collector includes collector 1: collector 2, and the molar ratio of the two is 1:0.2:

[0046] Collector 1:

[0047] Collector 2:

[0048] Chalcopyrite or pyrite flotation, the specific steps are: add 2g of chalcopyrite or pyrite single mineral with a particle size of -74+38μm and 40mL of deionized water into the flotation tank, and stir at 1700r / min Add the above mixed collector after 1min, the amount of mixed collector is 8×10 -5 mol / L, continue to stir for 3 minutes, then adjust the pH of the pulp to 9.0, then add 20 g / t foaming agent of a mixture of sodium lauryl sulfate and ethanol with a molar ratio of 1:0.2, and continue to stir for 2 minutes to carry out aerated flotation. 3min. Finally, the concentrated ore and tailings after flotation were weighed dry respectively, and the calculated chalcopyrite and pyrite recovery rates were 92.35% and 15.13% respectively, and...

Embodiment 2

[0050] The artificial mixed ore flotation of chalcopyrite and pyrite, the specific steps are: add 2g of artificial mixed ore (mass ratio 1:1) and 40mL deionized water into the flotation cell with a particle size of -74+38μm, Add the mixed collector described in the above-mentioned embodiment 1 after stirring for 1min under the rotating speed of / min, and the consumption of the mixed collector is 8×10 -5 mol / L, continue to stir for 3 minutes, then adjust the pH of the pulp to 9.0, then add 20 g / t foaming agent of a mixture of sodium lauryl sulfate and ethanol with a molar ratio of 1:0.2, and continue to stir for 2 minutes to carry out aerated flotation. 3min. Finally, the concentrated ore and tailings after flotation were weighed and tested for Cu grade, and the calculated Cu grade and recovery rate in the chalcopyrite concentrate were 27.35% and 90.18%, respectively. The results show that the mixed collector can better realize the selective separation of chalcopyrite and pyri...

Embodiment 3

[0052] In this case, combined collectors are used for the flotation of chalcopyrite-pyrite type copper-sulfur ore:

[0053] The mixed collector includes collector 1: collector 2, and the molar ratio of the two is 1:0.2:

[0054] Collector 1:

[0055] Collector 2:

[0056] A low-grade copper mine in Jiangxi, the mine is a chalcopyrite-pyrite type copper-sulfur ore, the Cu grade is 0.45%, mainly chalcopyrite. The grinding fineness of the copper ore is controlled at -0.074mm, the dry ore content accounts for 70% of the total dry ore, the slurry concentration is controlled at 40%, and then 80g / t of mixed collector is added, stirred for 3 minutes and then washed with sodium carbonate Adjust the pH of the pulp to 10, then add 30g / t foaming agent of a mixture of sodium lauryl sulfate and ethanol with a molar ratio of 1:0.3, and carry out one rough, one sweep and two fine at room temperature (selected as blank concentrate, swept The amount of collector used is 20g / t) flotation ...

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Abstract

The invention belongs to the field of copper-iron sulfide mineral flotation, and particularly relates to a chalcopyrite-iron sulfide mineral flotation separation reagent and method, namely separation of chalcopyrite and iron sulfide minerals is achieved through the flotation reagent, and chalcopyrite concentrate is obtained. The flotation reagent comprises a collecting agent; the collecting agent comprises at least one compound with the structural formula as shown in the formula I. The research finds that the new collecting agent can be selectively adsorbed on the surface of the chalcopyrite, but the adsorption to the pyrite is very weak, so that the lime-free separation of the chalcopyrite can be realized, and a plurality of defects of a traditional lime method process are avoided. The chalcopyrite flotation collecting agent is used for chalcopyrite flotation for the first time, can replace a traditional sulfide ore collecting agent poor in selectivity, and is small in dosage, low in cost, free of inhibitors, simple in preparation method, easy to obtain production raw materials and obvious in quality and environment-friendly advantage.

Description

technical field [0001] The invention belongs to the technical field of sulfide mineral flotation, and in particular relates to a chalcopyrite-iron sulfide mineral flotation separation agent and method. 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 copper mineral resources in my country, mainly copper sulfide ores, and copper-sulfur symbiotic ores are more common. As the main mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/008B03D1/012B03D103/02B03D101/02
CPCB03D1/008B03D1/012B03D2203/02B03D2201/02
Inventor 高志勇王建军孙伟伍思回胡岳华陶黎明汪聪任帅彭涛吴望妮
Owner CENT SOUTH UNIV
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