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Method for strengthening flotation separation of micro-fine particle copper-lead bulk concentrate through combined inhibitor

A combination of depressant and mixed concentrate technology, applied in flotation, solid separation, etc., can solve the problems affecting the effect of flotation, achieve strong inhibitory effect, strengthen the inhibitory effect, and strengthen the inhibitory effect

Pending Publication Date: 2021-07-23
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of relatively similar iron elements in the copper-lead system will affect the flotation effect

Method used

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  • Method for strengthening flotation separation of micro-fine particle copper-lead bulk concentrate through combined inhibitor
  • Method for strengthening flotation separation of micro-fine particle copper-lead bulk concentrate through combined inhibitor
  • Method for strengthening flotation separation of micro-fine particle copper-lead bulk concentrate through combined inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A copper-lead mixed concentrate contains 7.31% copper and 48.46% lead. The results of technological mineralogy show that the main metal minerals in this copper-lead mixed concentrate are galena, chalcocite, chalcopyrite, pyrite and a small amount of Bornite. Cu and Pb metals are 74.35% and 76.82% respectively at -0.038mm particle size. Adopt the flotation separation process provided by the present invention and combined depressant, carry out laboratory small-scale closed-circuit test to this ore sample, the concrete steps of test are as follows:

[0030] (1) Grind the copper-lead mixed concentrate first, add sodium sulfide and tannic acid + sodium metabisulfite to the grinding, and the dosage is 100g / t, 110g / t, 1200g / t respectively, to obtain the grinding overflow product ;

[0031] (2) Add Z-200 0.4g / t and terpineol oil 20g / t successively after pulping the overflow product of grinding, and conduct a rough separation;

[0032] (3) Sweep the rough tailings twice, add ...

Embodiment 2

[0039] A copper-lead mixed concentrate contains 8.95% copper and 41.52% lead. The results of technological mineralogy show that the main metal minerals in this copper-lead mixed concentrate are galena, chalcocite, chalcopyrite and pyrite. Cu and Pb metals are 74.07% and 78.26% respectively at -0.038mm particle size. Adopt the flotation separation process provided by the present invention and combined depressant, carry out laboratory small-scale closed-circuit test to this ore sample, the concrete steps of test are as follows:

[0040] (1) Grind the copper-lead mixed concentrate first, add sodium sulfide and tannic acid + sodium thiosulfate to the grinding, and the dosage is 110g / t, 90g / t, 900g / t respectively, to obtain the grinding overflow Flow product;

[0041] (2) Add Z-200 0.6g / t and terpineol oil 25g / t successively after slurrying the overflow product of grinding, and conduct a rough separation;

[0042] (3) Sweep the rough tailings twice after roughing, add 0.3g / t Z-20...

Embodiment 3

[0049] A copper-lead mixed concentrate contains 5.14% copper and 53.39% lead. The results of technological mineralogy show that the main metal minerals in this copper-lead mixed concentrate are galena, chalcopyrite and pyrite. Cu and Pb metals are 78.32% and 80.25% respectively at -0.038mm particle size. Adopt the flotation separation process provided by the present invention and combined depressant, carry out laboratory small-scale closed-circuit test to this ore sample, the concrete steps of test are as follows:

[0050] (1) Grind the copper-lead mixed concentrate first, add sodium sulfide and tannic acid + sodium pyrosulfite + sodium thiosulfate to the grinding, the dosage is 105g / t, 150g / t, 1600g / t, 1400g respectively / t, to obtain the grinding overflow product;

[0051] (2) Add Z-200 0.5g / t and terpineol oil 22g / t successively after slurrying the overflow product of grinding, and carry out a rough separation;

[0052] (3) Sweep the rough tailings twice after roughing, a...

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Abstract

The invention relates to the field of mineral separation, in particular to the technical field of copper-lead flotation separation, and provides a method for strengthening flotation separation of micro-fine particle copper-lead bulk concentrate through a combined inhibitor. The method comprises the following steps that (1) the copper-lead bulk concentrate is ground, meanwhile, a reagent removing agent and the combined inhibitor are added in the ore grinding process, and an ore grinding overflow product is obtained; (2) the obtained ore grinding overflow product is subjected to size mixing, then a collecting agent and a foaming agent are sequentially added, concentrate obtained through primary roughing is copper rough concentrate, and tailings are lead rough concentrate; (3) the copper rough concentrate is subjected to concentration, the combined inhibitor is added in each concentration, and the concentrated concentrate is copper concentrate; and the lead rough concentrate is subjected to scavenging, a collecting agent is added in each scavenging, and scavenged tailings are lead concentrate. The method through the combined inhibitor is environmentally friendly, free of toxicity and pollution, convenient to use and high in separation effect, and the flotation separation method is especially suitable for copper-lead separation of galena.

Description

technical field [0001] The invention relates to the field of ore dressing, in particular to the technical field of copper-lead flotation separation. Background technique [0002] Copper and lead metals are widely used in modern society. With the rapid development of chemical industry, metallurgy, electronics and other fields, the demand for copper and lead metals in the world continues to increase, especially in my country, which is the largest developing country in the world. The demand for copper and lead metals is very large. my country has a large amount of copper and lead resources, but the buoyancy of copper and lead in copper-lead polymetallic ores is similar, making it difficult to separate copper and lead. [0003] In the current industrial production, the process of copper-lead separation is generally to obtain copper-lead mixed concentrate first, and then use flotation to separate. Two methods are often used to obtain copper concentrate and lead concentrate. mine...

Claims

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Application Information

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IPC IPC(8): B03D1/018B03D1/002B03D1/00B03D101/06B03D103/02
CPCB03D1/018B03D1/002B03D1/00B03D2201/06B03D2203/02
Inventor 严华山邱廷省杨斌吴昊伍红强周晓文邱仙辉苗雨奇杨柳杨雯慧
Owner JIANGXI UNIV OF SCI & TECH
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