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Flotation separation process for mixed copper and lead concentrate

A technology for mixing concentrate and copper and lead, applied in the field of metallurgy, can solve the problems of difficult separation, poor adaptability, etc., and achieve the effect of ensuring the effect of drug removal, cheap drugs, and low mutual content of copper and lead

Active Publication Date: 2015-07-15
KUNMING METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problems of difficulty in non-toxic flotation separation of copper-lead mixed concentrates and poor adaptability, and comprehensively considers multiple angles such as process flow, combined inhibitors and selective collectors, and adopts sulfuric acid + sodium sulfite + rot The combined inhibitor of sodium phyllate inhibits lead minerals, and at the same time combines the concentration and removal of drugs under the condition of weakly alkaline pulp (adding lime + sodium sulfide), integrating chemical and physical drug removal, and at the same time inhibits lead and floats copper Using the ester collector Z-200 with good selectivity, the copper-lead mixed concentrate flotation separation technology index is good, the process is stable, the adaptability is strong, and it meets the requirements of environmental protection and non-toxicity

Method used

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  • Flotation separation process for mixed copper and lead concentrate
  • Flotation separation process for mixed copper and lead concentrate
  • Flotation separation process for mixed copper and lead concentrate

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Embodiment 1

[0031] The flotation separation of copper-lead mixed concentrate was carried out on a copper-lead-zinc polymetallic mine in Yunnan. The chemical multi-element analysis results of the ore are shown in Table 1, and the separation results are shown in Table 2. figure 2 , the specific flotation separation operation is as follows: (1) Add 200g / t lime and 300g / t sodium sulfide to the copper-lead mixed concentrate and stir for 2 minutes, and the pH is about 7.5. (2) The stirred pulp is dehydrated twice , after each thickening, use fresh water to adjust the pulp, (3) add 750g / t sulfuric acid to adjust the pH value of the thickened dehydrated pulp, the pH is controlled at about 6.2, and then add 1500g / t sodium sulfite and 400g / t sodium humate As a combined inhibitor of lead minerals, 6g / t Z-200 was added as a collector for copper-lead separation. (4) The flotation separation process is one rough, three fine and two sweeps, and finally copper concentrate and lead concentrate are obtain...

Embodiment 2

[0039] A copper-lead-zinc polymetallic ore in Northeast China was subjected to flotation separation of copper-lead mixed concentrate. The chemical multi-element analysis results of the ore are shown in Table 3, and the separation results are shown in Table 4. The copper-lead flotation separation process is shown in the appendix image 3 , the specific flotation separation operation is as follows: (1) add 200g / t lime and 600g / t sodium sulfide to the copper-lead mixed concentrate and stir for 2 minutes, and the pH is about 8.5; (2) the stirred pulp undergoes a dense dehydration, After thickening, use fresh water to adjust the pulp. (3) Add 300g / t sulfuric acid to the pulp after thickening and dehydration to adjust the pH value. Combined inhibitor of lead minerals, adding 7g / t Z-200 as collector for copper and lead separation. (4) The flotation separation process is one rough, two fine and one sweep, and finally copper concentrate and lead concentrate are obtained. See the attach...

Embodiment 3

[0045] The flotation separation of copper-lead mixed concentrate was carried out on a copper-lead-zinc polymetallic mine in Yunnan. The chemical multi-element analysis results of the ore are shown in Table 5, and the separation results are shown in Table 6. The copper-lead flotation separation process is shown in the appendix Figure 4 , the specific flotation separation operation is as follows: (1) Add 200g / t lime and 400g / t sodium sulfide to the copper-lead mixed concentrate and stir for 3 minutes, and the pH is about 8.0. (2) The stirred pulp is dehydrated twice , after each thickening, use fresh water to adjust the pulp. (3) Add 200g / t sulfuric acid to adjust the pH value of the thickened dehydrated pulp. The pH is controlled at about 7.0, and then add 2000g / t sodium sulfite and 700g / t sodium humate As a combined inhibitor of lead minerals, 7g / t Z-200 was added as a collector for copper and lead separation. (4) The flotation separation process is one rough, two fine and on...

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Abstract

The invention discloses a flotation separation process for mixed copper and lead concentrate. The flotation separation process comprises the following steps of adding lime and sodium sulphide to the mixed copper and lead concentrate after being separated from raw ore, and then, stirring for 2-4min until the lime and the sodium sulphide are stirred evenly; dehydrating and removing agents through a thickener, and then, adding a combined inhibitor and a collecting agent; performing rough concentration to obtain copper coarse ore and lead coarse ore; refining the copper coarse ore to obtain copper concentrate; scavenging the lead coarse ore to obtain lead concentrate, wherein the combined inhibitor is the combination of sulfuric acid, sodium sulfite and sodium humate. According to the flotation separation process disclosed by the invention, the grade and the recovery rate of the copper concentrate and the lead concentrate can be obviously increased, the copper and lead content is reduced, and the copper and lead separation effect is obvious; meanwhile, the mixed copper and lead concentrate has the characteristics of being stable in flow, high in adaptability, non-toxic and environmental friendly, can be used for replacing toxic agents, such as potassium dichromate, and is capable of overcoming the disadvantages that certain non-toxic agents are instable in flow, not obvious in effect, low in adaptability, and the like.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a flotation separation process of copper-lead mixed concentrate. Background technique [0002] At present, most domestic flotation technology for copper-lead-zinc polymetallic ore is copper-lead mixed separation to produce copper-lead mixed concentrate, flotation tailings and then zinc, copper-lead mixed concentrate and then flotation separation process . The key and difficult point of this process is the flotation separation of copper-lead mixed concentrate. The traditional classic separation of copper and lead mainly includes the use of potassium dichromate to suppress lead and float copper and the use of cyanide to suppress copper and float lead. Potassium phosphate and cyanide are both poisonous and harmful chemical substances that seriously pollute the environment, and their use has been banned in the field of non-ferrous metal sulfide mineral processing. ...

Claims

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Application Information

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IPC IPC(8): B03D1/00B03D1/018B03D1/008B03D101/02B03D101/06
Inventor 杨林阚赛琼谢峰任海洋刘玫华朱从杰简胜王少东张曙光杨玉珠
Owner KUNMING METALLURGY INST
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