Preparation method of copper-zinc sulfide ore flotation separation inhibitor and application thereof

A technology of mineral flotation and copper-zinc sulfide, applied in flotation, solid separation, etc., can solve the problems of zinc loss, copper concentrate grade reduction, and enterprise economic benefit reduction, achieving good inhibition, less chemical dosage, high quality effects

Inactive Publication Date: 2011-01-19
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the flotation process of zinc sulfide minerals, copper ions are generally used as the activator of zinc minerals to improve the buoyancy of zinc minerals, so that zinc sulfide minerals are easy to be collected by collectors, thereby improving the recovery rate of zinc; however, when When copper-zinc sulfide minerals are associated, due to the large amount of copper ions produced during the grinding process, the zinc minerals are activated by copper ions to make their buoyancy better, and they are collected together with copper minerals and exist in copper concentrates. It not only reduces the grade of copper concentrate and increases the cost of copper smelting, but also causes zinc to be lost in copper minerals, which makes resources not fully utilized and reduces the economic benefits of enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A preparation method for copper-zinc sulfide mineral flotation separation inhibitor, comprising the following steps: at room temperature, add 200ml of 40% by volume sulfuric acid solution into a 500ml three-necked flask, add iron containing 40% by weight 120 g of 50% pyrite slag was stirred and reacted at 60 rpm for 4 hours, and suction filtered while it was hot to obtain an acid leaching solution. Take 200ml of pickling solution in a 500ml three-neck flask, add 50g of iron powder as a reducing agent, heat and reflux at 75°C for 1 hour, then filter the unreacted iron powder while it is hot, then transfer the filtrate to an evaporating dish, °C constant temperature evaporation and concentration to crystallization, filtered while hot and dried to obtain a white powder, which is the zinc sulfide mineral inhibitor.

Embodiment 2

[0012] Another example of a preparation method of a copper sulfide mineral flotation separation inhibitor, comprising the following steps: at room temperature, in a 500ml three-necked flask, add 300ml of 50% by volume sulfuric acid solution, add iron-containing 150g of 40-50% pyrite slag was stirred and reacted at 60 rpm for 6 hours, and suction filtered while it was hot to obtain an acid leaching solution. Take 200ml of pickling solution in a 500ml three-neck flask, add 60g of iron powder as a reducing agent, heat and reflux at 85°C for 2 hours, then filter the unreacted iron powder while it is hot, then transfer the filtrate to an evaporating dish, °C constant temperature evaporation and concentration to crystallization, filtered while hot and dried to obtain a white powder, which is the zinc sulfide mineral inhibitor.

Embodiment 3

[0014] This example is an application example of using the copper-zinc sulfide mineral flotation separation inhibitor prepared in Example 1 or Example 2 in flotation separation in copper-zinc associated ore.

[0015] 1. Mineral raw materials:

[0016] The copper content in the raw material copper-zinc associated ore is wt%: 0.63%, the zinc content is 5.47%, and the sulfur content is 10.24%. Phase analysis shows that copper mainly exists in the form of chalcopyrite, zinc mainly exists in the form of sphalerite, and sulfur mainly exists in the form of pyrite.

[0017] 2. Chemical system and operating conditions: Grind the ore until the mineral monomers are dissociated, then use lime to adjust the pH value of the slurry to 10-11, and perform copper-zinc extraction according to the technological process of one roughing, two sweeping and three times of beneficiation. Separation, copper sulfide zinc mineral flotation separation inhibitor 150g / t, KM-10970g / t, No. 2 oil 60g / t in the ...

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PUM

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Abstract

The invention provides a preparation method of a copper-zinc sulfide ore flotation separation inhibitor, comprising the following steps: adding 200-300ml of sulfuric acid solution the volume percentage content of which is 40-50% and 120-150g of pyrite smelting slag containing 40-50wt% of ferrum to a 500ml of three-neck flask at room temperature, stirring the obtained mixed solution with the speed of 60RPM for reacting for 4-6 hours, and filtering while being hot to obtain acid leaching liquid; and placing 200ml of the acid leaching liquid in a 500ml of three-neck flask, adding 50-60g of ferrous powder as a reducing agent, carrying out heating reflux reaction at the temperature of 75-85 DEG C for 1-2 hours, filtering the unreacted ferrous powder while being hot, transferring the obtained filtrate to an evaporation pan, evaporating and concentrating the filtrate into crystal at the constant temperature of 75-80 DEG C, filtering and drying while being hot to obtain white powder, that is, the zinc sulfide ore inhibitor. The preparation method has good inhibition effect on zinc ore so that copper-zinc associated ore can be effectively separated to obtain copper concentrate with higher quality; and the method adopts a small amount of agents, thus being nontoxic and pollution-free.

Description

1. Technical field [0001] The invention relates to a preparation method of a zinc sulfide mineral inhibitor, in particular to a preparation method of a copper-zinc sulfide mineral flotation separation inhibitor. 2. Background technology [0002] In the flotation process of zinc sulfide minerals, copper ions are generally used as the activator of zinc minerals to improve the buoyancy of zinc minerals, so that zinc sulfide minerals are easy to be collected by collectors, thereby improving the recovery rate of zinc; however, when When copper-zinc sulfide minerals are associated, due to the large amount of copper ions produced during the grinding process, the zinc minerals are activated by copper ions to make their buoyancy better, and they are collected together with copper minerals and exist in copper concentrates. It not only reduces the grade of copper concentrate and increases the cost of copper smelting, but also causes zinc to be lost in copper minerals, which makes resou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012B03D101/06B03D103/02
Inventor 兰丽红陈建华魏宗武穆枭陈晔
Owner GUANGXI UNIV
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