Lead zinc ore beneficiation process capable of saving clean water

A process method, the technology of lead-zinc ore, applied in flotation, solid separation, etc., can solve the problems of wasting water resources, low recycling rate of mine production water, and affecting the ecological environment, so as to reduce the consumption of clean water and save clean water The effect of consumption and improvement of beneficiation indicators

Inactive Publication Date: 2018-06-19
南京银茂铅锌矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reuse rate of mine production water is low, a large amount of water resources are wasted every year, and it also affects the ecological environment and causes environmental pollution accidents.
Nanjing Yinmao lead-zinc polymetallic mine beneficiation wastewater before the application of new technology for high-efficiency separation and full reuse of beneficiation wastewater, low concentration of lead, zinc and sulfur in the beneficiation of lead-zinc polymetallic ore, large amount of centralized treatment of beneficiation wastewater, and high cost. It cannot be fully reused, and after reuse, it will affect the beneficiation index, and the waste water of the beneficiation plant still has environmental pollution to the external environment. With the improvement of environmental protection requirements, some beneficiation plants are even forced to stop production

Method used

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  • Lead zinc ore beneficiation process capable of saving clean water
  • Lead zinc ore beneficiation process capable of saving clean water
  • Lead zinc ore beneficiation process capable of saving clean water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The properties of the ore in Example 1 are: lead-zinc ore raw ore multi-element content: Pb3.2%, Zn5.8%, S29%, Ag 125g / t. Oxidation rate of ore: Pb5.52%, Zn4.85%.

[0020] The technical process conditions of Example 1 are: Lead selection: Grinding fineness -200 mesh (-0.074mm) is 75%; lead selection roughing initial concentration is 35%, pulp pH 10.5, pharmaceutical system: aniline 30g / t , sulfur nitrogen 15 g / t, zinc sulfate 1000 g / t, sodium sulfite 600 g / t; zinc selection: copper sulfate 400 g / t, lime 3000 g / t, butyl xanthate 250 g / t; sulfur selection: add Sulfuric acid is used to adjust the pH to 7-7.5, and butyl xanthate is 750 g / t. The amount of foaming agent (using terpineol oil) is added as needed. Mineral processing process see figure 2 , image 3 . The closed-circuit results of the laboratory are shown in Table 1.

[0021] Table 1: Comparative results of test index of embodiment 1

[0022]

[0023] It can be seen from Table 1 that the image 3 The be...

Embodiment 2

[0025] The ore properties and mineral composition of Example 2 are the same as those in Example 1. The technical process conditions of Example 2 are: lead selection: grinding fineness-200 mesh (-0.074mm) is 75%; pulp concentration is 35%, and the pulp pH 10.5, chemical system: aniline 30g / t, sulfur nitrogen 15 g / t, zinc sulfate 1000 g / t, sodium sulfite 600 g / t; zinc selection: copper sulfate 400 g / t, lime 3000 g / t, butyl Xanthate 250 g / t; sulfur selection: add sulfuric acid to adjust pH to 7-7.5, butyl xanthate 750 g / t; foaming agent (terpineol oil) is added as needed. Mineral processing process see figure 1 , image 3 . The closed-circuit results of the laboratory are shown in Table 2.

[0026] Table 2: Comparative results of test index of embodiment 2

[0027]

[0028] It can be seen from Table 2 that the figure 1 The beneficiation process is compared with image 3 process, under the same reagent conditions, the remaining reclaimed water from various concentrates an...

Embodiment 3

[0030] The ore properties and mineral composition of Example 3 are the same as those in Example 1. The technical process conditions of Example 3 are: lead selection: grinding fineness-200 mesh (-0.074mm) is 75%; the pulp concentration is 35%, and the pulp pH 10.5, chemical system: aniline 30g / t, sulfur nitrogen 15 g / t, zinc sulfate 1000 g / t, sodium sulfite 600 g / t; zinc selection: copper sulfate 400 g / t, lime 3000 g / t, butyl Xanthate 250 g / t; sulfur selection: add sulfuric acid to adjust pH to 7-7.5, butyl xanthate 750 g / t; foaming agent (terpineol oil) is added as needed. Mineral processing process see figure 1 , Figure 4 . The closed-circuit results of the laboratory are shown in Table 3.

[0031] Table 3: Comparative results of test index in embodiment 3

[0032]

[0033] It can be seen from Table 3 that the Figure 4 The beneficiation process is compared with figure 1 process, under the same chemical conditions, the water from various concentrates and tailings in...

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PUM

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Abstract

The invention provides a lead zinc ore beneficiation process capable of greatly reducing beneficiation clean water consumption, prominently saving clean water resources, stably improving lead zinc ore beneficiation indexes, reducing beneficiation waste water emission and reducing environmental pollution. In the lead zinc ore beneficiation process, lead tail water for lead tailings is directly returned for ball milling and lead separation, zinc tail water for zinc tailings is directly returned for zinc separation, tailing water for sulfur tailings is directly returned for sulfur separation, sothat the use level of the clean water can be prominently saved.

Description

technical field [0001] The invention relates to a beneficiation method, in particular to a lead-zinc ore beneficiation process which saves clean water. Background technique [0002] There are a large number of non-ferrous metal mines such as lead-zinc mines and copper mines in my country, which are rich in resources. However, the reuse rate of mine production water is low, a large amount of water resources are wasted every year, and at the same time, it also affects the ecological environment and causes environmental pollution accidents. Nanjing Yinmao lead-zinc polymetallic mine beneficiation wastewater before the application of new technology for high-efficiency separation and full reuse of beneficiation wastewater, low concentration of lead, zinc and sulfur in the beneficiation of lead-zinc polymetallic ore, large amount of water for centralized treatment of beneficiation wastewater, and high cost. It cannot be fully reused, and after reuse, it will affect the beneficiat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/00B03B1/00B03D103/04
CPCB03D1/00B03B1/00B03D2203/04
Inventor 马斌陈如凤付伟范寻
Owner 南京银茂铅锌矿业有限公司
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