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Method for eliminating copper ions in secondary copper sulphide multi-metal ore pulp solutions

A technology of copper sulfide and multi-metal, which is applied in the direction of solid separation and flotation, can solve the problems of increasing industrial cost, insignificant difference in surface properties, and high toxicity, and achieves improved grade and recovery rate, significant effect, and reduced The effect of product inclusion

Active Publication Date: 2016-08-31
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] At present, most of the polymetallic ores containing secondary copper sulfide at home and abroad use Na 2 S, ZnSO 4 、Na 2 SO 3 Suppresses sphalerite, but when the secondary copper content in the flotation system is high, more copper ions are easily produced, and copper sulfide films are easily formed on the surface of galena and sphalerite, endowing them with properties similar to copper sulfide minerals , leading to insignificant differences in surface properties, and it is impossible to obtain a better flotation index
K 2 Cr 2 o 7 Galena has a certain effect, but it is easy to cause heavy metal ion Cr to pollute the environment
Sodium cyanide is used to suppress copper sulfide minerals for flotation separation, but sodium cyanide and potassium cyanide in wastewater are highly toxic, and the treatment cost is high
In addition, when the raw ore grade is low, using priority flotation or equal flotation flotation to suppress sulfide minerals first will consume a large amount of inhibitors, and then consume a large amount of activators to activate and collect them. Greatly increased industrial costs

Method used

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  • Method for eliminating copper ions in secondary copper sulphide multi-metal ore pulp solutions
  • Method for eliminating copper ions in secondary copper sulphide multi-metal ore pulp solutions
  • Method for eliminating copper ions in secondary copper sulphide multi-metal ore pulp solutions

Examples

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Embodiment 1

[0034] In this example, a copper-lead-zinc polymetallic sulfide ore in Xinjiang is used as an ore sample. The raw ore Cu grade is 0.52%, the primary copper sulfide occupancy rate is 53.91%, the secondary copper sulfide occupancy rate is 40.22%, the Zn grade is 2.68%, and the Pb grade is 1.24%. Fe grade 8.04%, specifically comprises the following steps:

[0035] (1) Prepare a suspension by adding 1g of copper powder with a particle size of 74μm per 1L of water, and heat to boil;

[0036] (2) Take 1t of raw ore sample, crush it to below -2 mm and grind it, the grinding fineness is -0.074 mm and the content is 91.51%, the grinding product enters the mixing tank, adjust the pulp concentration to 60% to obtain the raw ore pulp, Add 5L of the copper powder suspension obtained in step (1) to the raw ore pulp, then add hydrochloric acid with a mass fraction of 40%, adjust the Ph to 2, heat to 40°C, and stir for 10 minutes to fully react to obtain the ore pulp after removing copper ion...

Embodiment 2

[0040] In this example, the copper-lead-zinc polymetallic oxygen-sulfur mixed ore in Myanmar is used as the ore sample. The Cu grade of the raw ore is 0.31%, the primary copper sulfide occupancy rate is 38.68%, the secondary copper sulfide occupancy rate is 32.22%, the Zn grade is 3.97%, and the Pb grade is 3.37%. , Fe grade 1.52% concrete test comprises the following steps:

[0041] (1) Prepare the suspension by adding 2.5g of copper powder with a particle size of 50μm per 1L of water;

[0042] (2) Take 1t of raw ore sample, crush it to below -2 mm and grind it, the grinding fineness is -0.074 mm and the content is 93.25%, the grinding product enters the mixing tank, adjust the pulp concentration to 70% to get the raw ore pulp, Add 4L of the copper powder suspension obtained in step (1) to the raw ore pulp, then add hydrochloric acid with a mass fraction of 30%, adjust the pH to 4, heat to 55°C, and stir for 20 minutes to fully react to obtain the ore pulp after removing copp...

Embodiment 3

[0046] In this embodiment, Tianbaoshan copper-lead-zinc polymetallic ore is used as the ore sample. The raw ore Cu grade is 0.94%, the primary copper sulfide occupancy rate is 33.71%, the secondary copper sulfide occupancy rate is 38.57%, the Zn grade is 15.49%, the Pb grade is 2.12%, and the Fe Grade 5.04% concrete test comprises the following steps:

[0047] (1) Prepare a suspension by adding 5g of copper powder with a particle size of 25μm per 1L of water, and heat to boil;

[0048] (2) Take 1t of raw ore sample, crush it to below -2 mm and grind it, the grinding fineness is -0.074 mm and the content is 91.51%, the grinding product enters the mixing tank, adjust the pulp concentration to 80% to get the raw ore pulp, Add 4L of the copper powder suspension obtained in step (1) to the raw ore pulp, then add hydrochloric acid with a mass fraction of 20%, adjust the pH to 5, heat to 60°C, and stir for 15 minutes to fully react to obtain the ore pulp after removing copper ions ....

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Abstract

The invention discloses a method for eliminating copper ions in secondary copper sulphide multi-metal ore pulp solutions and belongs to the technical field of mineral processing. The method is characterized in that the beneficiation process of the method sequentially comprises the steps that raw ore is ground till monomer separation is conducted, and the ground raw ore is fed into a stirring groove; copper powder is added into the stirring groove, added with hydrochloric acid, heated and stirred; and pulp conditioning and dosing are conducted, common floatation is carried out, and concentrate products are obtained. According to the method for eliminating the copper ions in the secondary copper sulphide multi-metal ore pulp solutions, the hydrochloric acid and the copper powder react with Cu2+; a coordination compound [CuCl2]-, capable of stably staying in a water solution, of Cu(I) can be generated; and the Cu2+ is removed before floatation operation is conducted, sphalerites, pyrites, magnetic pyrites and other sulfide minerals are prevented from being activated through the ion Cu2+, and good beneficiation indexes can be acquired through the common floatation process. The method for eliminating the copper ions in the secondary copper sulphide multi-metal ore pulp solutions has the advantages of being good in beneficiation index, capable of saving medicaments and the like.

Description

technical field [0001] The invention relates to a method for eliminating copper ions in a secondary copper sulfide polymetallic pulp solution, which belongs to the technical field of mineral processing. Background technique [0002] In my country's polymetallic sulfide ores, especially copper-bearing polymetallic sulfide ores, most of the useful minerals are fine-grained, and copper minerals are densely symbiotic with other sulfide minerals. In addition, the oxidation of copper sulfide ore causes the secondary copper sulfide ore to dissociate a large amount of copper ions during the grinding process. From the point of view of pure mineral flotation, the preferential flotation of Cu, Pb, Zn, Fe sulfide ores is not a problem, but in actual production, copper ions have an activation effect on sulfide minerals such as sphalerite, so it is necessary to add a regulator , to achieve separation, but the consumption of reagents is large, the flotation index of the final concentrate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/002B03D1/02B03D101/06
CPCB03D1/002B03D1/02B03D2201/06
Inventor 余力刘全军高扬宋建文袁华玮张一超张辉
Owner KUNMING UNIV OF SCI & TECH
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