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

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

Active Publication Date: 2014-12-17
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 problem that the existing method has an impact on the concentration of the separation operation, which is not conducive to the effective separation of copper from lead and zinc

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

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Embodiment 1

[0022] The invention is used to carry out separation flotation of copper and lead-zinc on a certain copper-lead-zinc polymetallic sulfide ore. Add 200 g / ton of sodium sulfide and stir for 3 minutes under the condition of pulp concentration of 24%, then add sulfur dioxide 1000 g / ton and stir, the pulp concentration remains basically unchanged, and copper and lead-zinc are carried out under the condition of pulp pH value of 6.0. Sulfur separation and flotation to obtain coarse copper concentrate and lead-zinc mixed concentrate; the separation index is: separated feed copper grade 5.85%, lead grade 12.61%, zinc grade 23.32%; separated copper concentrate grade copper copper 19.46%, It contains 5.66% lead, 6.47% zinc, and a copper recovery rate of 80.59%; the lead-zinc mixed concentrate contains 1.50% copper; the lead recovery rate is 89.12%, and the zinc recovery rate is 93.27%.

Embodiment 2

[0028] The invention is used to carry out separation flotation of copper and lead-zinc on a certain copper-lead-zinc polymetallic sulfide ore. When the pulp concentration is 23.5%, add sodium sulfide 150 g / ton and stir for 3 minutes, then add sulfur dioxide 800 g / ton and stir. Copper rough concentrate and lead-zinc mixed concentrate were obtained by sulfur separation flotation; the separation indicators were: separated ore copper grade 3.37%, lead grade 12.10%, zinc grade 23.48%; separated copper concentrate grade copper copper 16.42%, containing Lead 4.58%, zinc 6.11%, copper recovery rate 79.63%; lead-zinc mixed concentrate contains copper 0.82%; lead recovery rate 93.82%, zinc recovery rate 95.75%.

Embodiment 3

[0034] The invention is used to carry out separation flotation of copper and lead-zinc on a certain copper-lead-zinc polymetallic sulfide ore. Add sodium sulfide 400 g / ton and stir for 4 minutes under the condition of pulp concentration of 26%, then add sulfur dioxide 1400 g / ton and stir, the pulp concentration is basically unchanged, and copper and lead-zinc are carried out under the condition of pulp pH value of 6.2. Sulfur separation and flotation to obtain coarse copper concentrate and lead-zinc mixed concentrate; the separation index is: the copper grade of the separated ore feed is 6.04%, the lead grade is 15.17%, and the zinc grade is 24.25%; the copper-copper grade of the separated copper concentrate is 20.37%, It contains 5.81% lead, 7.23% zinc, and a copper recovery rate of 88.25%; the lead-zinc mixed concentrate contains 0.96% copper; 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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Patent Type & Authority Patents(China)
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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