Beneficiation method for copper and lead zinc separation by adopting liquid sulfur dioxide

A liquid sulfur dioxide, sulfur dioxide technology, applied in the direction of solid separation, flotation, etc., can solve the problems of concentration effect of separation operation, unfavorable effective separation of copper and lead and zinc, etc., and achieve the effect of improving the concentration of pulp and improving the separation effect.

Active Publication Date: 2013-12-18
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a beneficiation method using liquid sulfur dioxide to separate copper from lead and zinc, so as to solve the prob

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  • Beneficiation method for copper and lead zinc separation by adopting liquid sulfur dioxide

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Example Embodiment

[0021] Example 1

[0022] The invention is used for the separation and flotation of copper and lead and zinc on a copper-lead-zinc polymetallic sulfide ore. Under the condition of 24% slurry concentration, add 200 g / ton of sodium sulfide and stir for 3 minutes, then add 1000 g / ton of sulfur dioxide and stir. The slurry concentration is basically unchanged. Copper and lead-zinc are carried out under the condition that the pH of the slurry is 6.0 Sulfur separation flotation obtains crude copper concentrate and lead-zinc mixed concentrate; the separation indicators are: separated to ore copper grade 5.85%, lead grade 12.61%, zinc grade 23.32%; after separation, the copper concentrate copper and copper grade 19.46%, The lead content is 5.66%, zinc content is 6.47%, and the copper recovery rate is 80.59%; the lead-zinc mixed concentrate contains copper 1.50%; the lead recovery rate is 89.12%, and the zinc recovery rate is 93.27%.

Example Embodiment

[0027] Example 2

[0028] The invention is used for the separation and flotation of copper and lead and zinc on a copper-lead-zinc polymetallic sulfide ore. Add 150 g / ton of sodium sulfide and stir for 3 minutes under the condition of 23.5% pulp concentration, then add 800 g / ton of sulfur dioxide and stir, the pulp concentration is basically unchanged, copper and lead zinc are carried out under the condition of pulp pH 6.4 Sulfur separation flotation obtains crude copper concentrate and lead-zinc mixed concentrate; the separation indicators are: separated feed copper grade of 3.37%, lead grade of 12.10%, zinc grade of 23.48%; after separation of copper concentrate, copper and copper grade of 16.42%, containing Lead is 4.58%, zinc is 6.11%, copper recovery rate is 79.63%; lead-zinc mixed concentrate contains copper 0.82%; lead recovery rate is 93.82%, zinc recovery rate is 95.75%.

Example Embodiment

[0033] Example 3

[0034] The invention is used for the separation and flotation of copper and lead and zinc on a copper-lead-zinc polymetallic sulfide ore. Add 400 g / ton of sodium sulfide and stir for 4 minutes under the condition of the pulp concentration of 26%, then add 1400 g / ton of sulfur dioxide and stir. The concentration of the pulp remains basically unchanged. Copper and lead-zinc are carried out under the condition that the pH of the pulp is 6.2 Sulfur separation flotation obtains crude copper concentrate and lead-zinc mixed concentrate; the separation indicators are: separated to ore copper grade 6.04%, lead grade 15.17%, zinc grade 24.25%; after separation, copper concentrate copper and copper grade 20.37%, The lead content is 5.81%, the zinc content is 7.23%, and the copper recovery rate is 88.25%; the lead-zinc mixed concentrate contains copper 0.96%; the lead recovery rate is 89.99%, and the zinc recovery rate is 92.20%.

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Abstract

The invention discloses a beneficiation method for copper and lead zinc separation by adopting liquid sulfur dioxide and solves the problems that in the existing method, the influence is generated on the separation operation concentration, and further, the effective separation of copper from lead zinc is not favorably realized. The beneficiation method adopts a sulfur dioxide addition regulating control system, and the copper and lead zinc separation comprises the following specific processes that A, sodium sulfide is added into ore pulp for stirring; B, sulfur dioxide is added into the ore pulp for stirring through the addition regulating control system; C, liquid sulfur dioxide enters the ore pulp in a gas state through being gasified by the regulating control system; and D, the pH value of the ore pulp is regulated to 6.0 to 6.7, and then, the copper and lead zinc sulfide separation flotation is carried out. The beneficiation method has the advantages that the sulfur dioxide is added into the ore pulp, the ore pulp concentration can be effectively improved, meanwhile, the sulphurous acid concentration in the ore pulp can also be ensured, the sodium sulfide is also added into the ore pulp, and the separation effect of copper and lead zinc sulfide can be further improved.

Description

technical field [0001] The invention belongs to the technical field of mineral flotation separation technology, and in particular relates to a beneficiation method for separating chalcopyrite, galena and sphalerite in the nonferrous polymetallic ore separation technology. Background technique [0002] At present, the sulfurous acid used in the separation process of copper and lead-zinc in non-ferrous polymetallic ore is all fired sulfurous acid or prepared sulfurous acid. The main problems are as follows: 1) The concentration of fired sulfurous acid is low and relatively large, and The large amount of addition is not conducive to the effective separation of polymetallic ores, resulting in poor separation effect and unstable production indicators. 2) Although the preparation of sulfurous acid can increase the effective concentration of ore pulp to a certain extent, it still has a certain impact on the concentration of the separation operation due to the addition of liquid, wh...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/002B03D103/04
Inventor 胡保栓柏亚林孙运礼彭贵熊何海涛刘宝山包玺琳刘剑廖雪珍姜永智
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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