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Method for preferentially floating lead by using mixed collecting agents in flotation of lead zinc sulfide ore

A technology of mixing collector and lead-zinc sulfide, applied in the directions of flotation, solid separation, etc., can solve the problems of lime and calcium in pipelines, and achieve the effect of simple process, convenient industrial production and operation, and avoiding the loss of lead and zinc.

Active Publication Date: 2019-06-11
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are mostly used in a high-alkali environment, and need to be combined with a high amount of quicklime. During the production process, it is often easy to encounter problems such as lime calcium in the pipeline.

Method used

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  • Method for preferentially floating lead by using mixed collecting agents in flotation of lead zinc sulfide ore
  • Method for preferentially floating lead by using mixed collecting agents in flotation of lead zinc sulfide ore
  • Method for preferentially floating lead by using mixed collecting agents in flotation of lead zinc sulfide ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The ore sample is the raw ore sample of a lead-zinc sulfide mine in Inner Mongolia, in which the proportion of oxidized weathered ore is as high as 30%, and after the ore is ground to -0.074mm particle size, it accounts for 85%. 400 g / ton, 400 g / ton sodium sulfide, 100 g / ton ammonium butyl ammonium collector, and 50 g / ton ethyl diazepam, butyl xanthate as the collector. 50 grams / ton and 50 grams / ton of benzohydroxamic acid, and reduce the amount of quicklime to 3000 grams / ton, and other conditions are the same. The results of flotation tests are compared in the following table:

[0024]

[0025]

[0026] The results show that the use of mixed collectors not only increases the lead grade of rough concentrate, but also increases the recovery rate of tungsten from rough concentrate by about 5%.

Embodiment 2

[0028] The ore sample is the original ore sample of a lead-zinc sulfide mine in Yunnan, with a carbon content of about 1% and oxide ore accounting for about 15%. grams / ton, zinc sulfate 800 grams / ton, sodium sulfite 800 grams / ton, 25# black medicine 45 grams / ton, butyl xanthate 50 grams / ton, under the premise of not changing the original pharmaceutical system and process flow, in Add 80 g / t raw ore benzyl hydroxamic acid to the lead scavenging section, and compare the results of the closed-circuit flotation test, as shown in the table below:

[0029]

[0030] The results show that the recovery rate of lead in lead concentrate is significantly increased by about 7% by using the mixed collector added with benzohydroxamic acid.

Embodiment 3

[0032] The ore sample is the original ore sample of a lead-zinc-copper sulfide mine in Inner Mongolia, which contains 1.18% carbon. The original process adopts the decarburization process, first using 200 g / ton of zinc sulfate, 200 g / ton of sodium sulfite and 30 g / ton of ethyl sulfur nitrogen for flotation Charcoal, and then use 6500 g / ton of lime, 1200 g / ton of zinc sulfate, 1200 g / ton of sodium sulfite, and 200 g / ton of ethyl disulfide nitrogen to float lead from the decarbonized tailings, and replace the original collector with a mixture of B Sulfur nitrogen 120 g / ton, butyl xanthate 80 g / ton and benzohydroxamic acid 20 g / ton, remove the decarburization operation and directly give priority to floating lead, other conditions are the same, the comparison of flotation test results is shown in the table below:

[0033]

[0034] The results show that the original reagent system and decarbonization operation will lose about 4% lead in the removed carbon, and the use of mixed co...

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Abstract

The invention discloses a method for preferentially floating lead by using mixed collecting agents in flotation of lead zinc sulfide ore. The method comprises the following steps: firstly, finely grinding raw ore, then sequentially adding an adjusting agent, an inhibitor and mixed collecting agents for slurry mixing, wherein diethyl dithiocarbamate, butyl xanthate and benzyl hydroxamic acid are mixed and used as the mixed collecting agents; preparing the mixed collecting agents into a collecting agent mixture for use, or separately using the mixed collecting agents; and finally carrying out flotation on lead. The method effectively solves the problem that a part of weathered lead oxide ore contained in raw ore in flotation process of lead zinc sulfide ore is difficult to effectively recover by a sulfide ore collecting agent, and the recovery rate of lead in lead concentrates can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of mineral processing. Specifically, it is a method for preferentially floating lead in the flotation of lead-zinc ore by using a mixed collector. Background technique [0002] my country's lead-zinc ore resources are relatively rich, but the types of ores are complex, there are many associated components, and the comprehensive utilization value is relatively high; lead-zinc deposits are mostly sulfide ores, but there are also large-scale lead-zinc oxide deposits, the ratio of lead to zinc is more than Zinc-dominated, there are few single lead deposits, and the overall distribution law is more lean ore and less rich ore. Although the lead-zinc sulfide deposits are dominated by sulfide ores, due to geological mineralization and surface weathering, mixed veins of sulfide ores and oxide ores often appear, which brings difficulties to the separation and recovery of lead and zinc. [0003] The sorting method of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/012B03D101/02B03D103/04
Inventor 王训青邱廷省郭超华黄海威艾光华
Owner JIANGXI UNIV OF SCI & TECH