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Method for comprehensively recycling lead, zinc, tin and fluorite from tailings

A technology for tailings and fluorite, applied in the field of environmental protection treatment of tailings, can solve the problem of no economical and feasible method for recycling, and achieve the effects of reducing the burden of separation, comprehensively and effectively utilizing resources, and being environmentally friendly.

Active Publication Date: 2017-08-11
湖南临武嘉宇矿业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The usual flotation method can not achieve good results for polymetallic symbiotic lead, zinc, tin and fluorite tailings. At present, there is no economical and easy way to recover lead, zinc, tin and fluorite from tailings.

Method used

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  • Method for comprehensively recycling lead, zinc, tin and fluorite from tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A tailing sand contains 2.03% lead and zinc, 0.36% cassiterite and 15.22% fluorite.

[0032] Adopt technology of the present invention, comprise the following steps:

[0033] (1) Firstly, the original tailings are pre-screened through 20 mesh, and the -20 mesh tailings are ground, and the ground to -200 mesh accounts for about 90% of the flotation;

[0034] (2) Use the flotation method to recover lead-zinc minerals by flotation, and adopt the process of one rough three fine two sweeps to recover the lead and zinc. The pharmaceutical system is as follows: copper sulfate is the activator, butyl xanthate is the collector Oil is the foaming agent, the amount used in the rough selection is activator 150g / t, collector 100, foaming agent 20g / t, the three selections are all blank flotation, no reagent is added; the first sweep: collector 60g / t, foaming agent 5g / t, second sweep: collector 20g / t, foaming agent 5g / t;

[0035] (3) For the flotation tailings, the cassiterite in it...

Embodiment 2

[0040] A certain tailings contains 2.52% lead and zinc, 0.72% tin and 23.36% fluorite.

[0041] Adopt technology of the present invention, comprise the following steps:

[0042] (1) Firstly, the original tailings are pre-screened through 20 mesh, and the -20 mesh tailings are ground, and the ground to -200 mesh accounts for about 90% of the flotation;

[0043] (2) Use the flotation method to recover lead-zinc minerals by flotation, and adopt the process of one rough three fine two sweeps to recover the lead and zinc. The pharmaceutical system is as follows: copper sulfate is the activator, butyl xanthate is the collector Oil is the foaming agent, the amount used in the rough selection is 180g / t activator, 110g / t collector, 25g / t foaming agent, and 70g / t collector, 8g / t foaming agent, Secondary sweeping: collector 30g / t, foaming agent 8g / t;

[0044] (3) For the flotation tailings, use a shaker to recover the cassiterite in it by sweeping, roughing, refining, and cleaning. The...

Embodiment 3

[0049] A certain tailings contains 2.21% lead and zinc, 0.53% tin and 20.15% fluorite.

[0050] Adopt technology of the present invention, comprise the following steps:

[0051] (1) Firstly, the original tailings are pre-screened through 20 mesh, and the -20 mesh tailings are ground, and the ground to -200 mesh accounts for about 90% of the flotation;

[0052] (2) Use the flotation method to recover lead-zinc minerals by flotation, and adopt the process of one rough three fine two sweeps to recover the lead and zinc. The pharmaceutical system is as follows: copper sulfate is the activator, butyl xanthate is the collector Oil is the foaming agent, the amount used in the rough selection is activator 200g / t, collector 120g / t, foaming agent 30g / t, once sweeping: collector 80g / t, foaming agent 10g / t, Secondary sweeping: collector 40g / t, foaming agent 10g / t;

[0053] (3) For the flotation tailings, the cassiterite in it is recovered by using a shaker, roughing, finening, and sweep...

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Abstract

The invention discloses a method for comprehensively recycling lead, zinc, tin and fluorite from tailings. The method includes the following steps that firstly, the tailings are pre-screened; then the tailings of -20 meshes are subjected to ore grinding, and an ore grinding product with the preset fineness is obtained; then the ore grinding product is subjected to floatation which includes one time of rough floatation, three times of finish floatation and two times of scavenging, and lead and zinc in the tailings are recycled; then the floated tailings enter a shaking table to be subjected to re-floatation which includes one time of rough floatation, one time of finish flotation and one time of scavenging, and tinstone is recycled through re-floatation; and finally, the re-floated tailings are subjected to fluorite re-floatation which includes one time of rough floatation, eight times of finish floatation and two times of scavenging. By means of the technical means of floatation, re-floatation and re-floatation, the problems that at present, the recycling rate of poor, varied and thin tailings is low, the cost is high, and pollution is large are solved, and the process is simple and practical.

Description

technical field [0001] The invention belongs to the technical field of tailings environmental protection treatment, in particular to a method for comprehensively recovering lead, zinc, tin and fluorite from tailings. Background technique [0002] With the development of industry, the quantity of tailings has been increasing, especially fine-grained tailings, which have caused serious pollution to water sources and farmland. Under the situation that mineral resources are depleting day by day and environmental awareness is increasing, the recycling of secondary resources is particularly important. The recycling and utilization of tailings resources has become the only way for the sustainable development of mines. [0003] Due to the characteristics of poor, miscellaneous, and fine tailings in the concentrator, the current common treatment method for tailings containing lead, zinc, tin, and fluorite is flotation, which has low recovery rate, poor economic benefits, and great im...

Claims

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Application Information

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IPC IPC(8): B03B7/00B03B9/06B03D1/018B03B5/04B03D101/02B03D101/04B03D101/06B03D103/02
CPCB03B5/04B03B7/00B03B9/06B03D1/018B03D2201/007B03D2201/02B03D2201/04B03D2201/06B03D2203/02Y02W30/52
Inventor 刘三军黄金罗庆林周水清罗四清曹水国陈晨鹏
Owner 湖南临武嘉宇矿业有限责任公司
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