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Method for selecting copper concentrate from copper ore with high sulfur and arsenic content

A copper concentrate and content technology, applied in the field of smelting, can solve the problems of difficult separation of sulfur arsenic copper ore, difficulty in finding the mineral separation potential range, and difficulty in realizing the separation of copper and arsenic, so as to achieve the effect of promoting sales and smelting recovery

Active Publication Date: 2014-10-29
ZIJIN MINING GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the similar surface properties and buoyancy of sulphurite and copper blue, chalcocite and other minerals, it is difficult to separate sulphurite by conventional flotation processes and using conventional chemicals
Because there are many factors affecting the potential in the pulp, it is difficult to find a suitable mineral separation potential range, and the potential fluctuation is large. It is also difficult to realize the separation of copper and arsenic by potential control flotation.

Method used

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  • Method for selecting copper concentrate from copper ore with high sulfur and arsenic content
  • Method for selecting copper concentrate from copper ore with high sulfur and arsenic content

Examples

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Effect test

Embodiment 1

[0014] Example 1: According to the dry weight of each ton of raw ore, add calcium oxide in the ball mill at an amount of 1000g / t, add the crushed raw ore and water to the ball mill at a ratio of 1:1 for grinding, and discharge the material from the ball mill. The ore fineness is -0.074mm, accounting for 60%, and the pH value of the ore pulp is 9.0-10.0. Add 500g / t of water glass, 20g / t of butylammonium black medicine and 10g / t of terpineol oil to the material discharged from the ball mill in sequence, and then perform the first copper roughing operation; then add calcium oxide in sequence The dosage is 1000g / t, the dosage of water glass is 250g / t, the dosage of butyl ammonium black medicine is 10g / t, and the dosage of butyl xanthate is 5g / t, and then the second copper roughing operation is carried out after mixing and slurrying. Add the dosage of butylammonium black medicine 5g / t and the dosage of butyl xanthate 2.5g / t in sequence, stir and adjust the slurry, and then carry ou...

Embodiment 2

[0015] Embodiment 2: According to figure 1 The embodiment of the technological process of the present invention, the test steps, process parameters, and medicament system are exactly the same as those in Example 1. The technological indexes of embodiment 1 and embodiment 2 of the present invention are shown in Table 1. Shown by the implementation result shown in table 1, adopt the inventive method, the low-arsenic copper concentrate copper grade that embodiment 1 obtains is 22.54%, the copper recovery rate is 72.48%, and the arsenic content is 0.46%; The high-arsenic copper concentrate copper grade is 21.09% , the copper recovery rate was 21.17%, and the arsenic content was 2.73%. The copper grade of the low-arsenic copper concentrate obtained in Example 2 was 22.14%, the copper recovery rate was 71.09%, and the arsenic content was 0.42%; the copper grade of the high-arsenic copper concentrate was 20.01%, the copper recovery rate was 20.01%, and the arsenic content was 2.48%....

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Abstract

The invention provides a method for selecting copper concentrate from copper ore with the high sulfur and arsenic content. The method includes the steps that firstly, pyrites are restrained, and differential flotation is conducted on the copper ore step by step; secondly, enargite is selectively removed from the copper concentrate. A regrinding reagent removing-oxidizing method is adopted in the process of removing the enargite from the copper concentrate, lime and calcium hypochlorite are used for size mixing, and the copper ore such as chalcocite, blue chalcocite and covellite which do not contain arsenic are preferentially oxidized under the strong oxidizing property of potassium permanganate, hydrophilic oxide films are formed on the surfaces of the ore such as the chalcocite, the blue chalcocite and the covellite so thatrestraining can be achieved, floatation separation with the sulfur and arsenic copper ore can be achieved, the product scheme of the copper concentrate is optimized, and copper concentrate marketing, smelting and recycling can be easily promoted.

Description

1. Technical field [0001] The invention relates to the smelting industry, in particular to a beneficiation method for low-copper and high-arsenic copper ore, specifically a method for selecting copper concentrate from copper ore with high sulfur and arsenic content. 2. Background technology [0002] Arsenic reduction in copper concentrate has always been a major problem in the field of mineral processing. Excessive arsenic content in copper concentrate will directly affect the physical and mental health of smelter workers and seriously pollute the environment. Therefore, smelters require that the arsenic content in copper concentrate should not exceed 0.5%. High-arsenic and low-copper volcanic-subvolcanic rock hydrothermal copper deposits are the main type of copper deposits with mining value. And quartz, alunite, dickite, sericite and other minerals. Solanite is the most important arsenic-containing mineral in the ore, and it is also one of the copper-containing minerals ...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/018B03B7/00
Inventor 鲁军田树国崔丽凤徐其红陈晓芳
Owner ZIJIN MINING GROUP
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