Four-step method for processing and recycling tin ore floatation wastewater

A technology for mineral processing wastewater and treatment cycle, which is applied in energy wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. It can solve the problem of unsatisfactory treatment effect of mineral processing wastewater, low processing cost and the influence of mineral processing indicators. The low utilization rate of backwater can reduce the content of pharmaceuticals and fine particles, improve the utilization rate of pharmaceutical components, and reduce the amount of production.

Active Publication Date: 2012-11-14
广西华锡矿业有限公司铜坑矿业分公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the limitations of technological progress and capital investment, the treatment effect of mineral processing wastewater is not very satisfactory, and the utilization rate of backwater is low, with an average of 75-85% in China, which wastes water resources and has a certain impact on the environment.
It can be seen that there is currently no wastewater treatment method that is economical, applicable, has low treatment costs, and has little impact on mineral processing indicators, especially in the processing of tin ore mineral processing wastewater.

Method used

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  • Four-step method for processing and recycling tin ore floatation wastewater
  • Four-step method for processing and recycling tin ore floatation wastewater

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Effect test

Embodiment 1

[0032] In tin ore beneficiation, the combined flotation-magnetic separation-gravity separation technology is adopted. First, the high-efficiency heavy-separation waste disposal technology is used for ore beneficiation. The production rate is 30%, and the tailings with a particle size of 3~4mm and a tin grade less than 0.1% have realized the purpose of high-efficiency discarding, increased the content of tin metal entering the main process, and reduced the main process water and chemical consumption; Then apply selective grinding technology, and use different grinding media and different grinding strengths according to the tin ore of different grades and different particle sizes to reduce the over-crushing of tin ore, so that more than 70% of the metal can be re-selected The method is recovered, reducing the flotation load and the consumption of reagents, and the cassiterite recovery rate is increased to more than 65%; then the selective grinding technology is applied to the ultr...

Embodiment 2

[0034] In tin ore beneficiation, the combined flotation-magnetic separation-gravity separation technology is adopted. First, the high-efficiency heavy-separation waste disposal technology is used for ore beneficiation. The production rate is 30%, and the tailings with a particle size of 2~3mm and a tin grade of less than 0.1% have realized the purpose of high-efficiency waste disposal, increased the content of tin metal entering the main process, and reduced the main process water and chemical consumption; Then apply selective grinding technology, and use different grinding media and different grinding strengths according to the tin ore of different grades and different particle sizes to reduce the over-crushing of tin ore, so that more than 70% of the metal can be re-selected The method is recovered, reducing the flotation load and the consumption of reagents, and the cassiterite recovery rate is increased to more than 65%; then the selective grinding technology is applied to t...

Embodiment 3

[0036] In tin ore beneficiation, the combined flotation-magnetic separation-gravity separation technology is adopted. First, the high-efficiency heavy-separation waste disposal technology is used for ore beneficiation. The production rate is 30%, and the tailings with a particle size of 1~3mm and a tin content of less than 0.1% achieves the purpose of high-efficiency waste disposal, increases the content of tin metal entering the main process, and reduces the amount of water and chemicals used in the main process; Then apply selective grinding technology, and use different grinding media and different grinding strengths according to the tin ore of different grades and different particle sizes to reduce the over-crushing of tin ore, so that more than 70% of the metal can be re-selected The method is recovered, reducing the flotation load and the consumption of reagents, and the cassiterite recovery rate is increased to more than 65%; then the selective grinding technology is appl...

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Abstract

The invention discloses a four-step method for processing and recycling tin ore floatation wastewater, which comprises a new floatation technique, chemical treatment, physical treatment and biological treatment. The four-step method is characterized in that the principle of putting prevention first and providing prevention and control is adopted. The method is as follows: the new floatation technique and process are utilized to reduce the floatation wastewater and the microgranular particles from the headstream and reduce the usage amount of floatation reagents; because the chemical treatmentmethod is used, the concentration of polyacrylamide in the tin ore floatation wastewater is increased from 0.5 percent to 0.9-1.1 percent, and the settling rate of part of the wastewater is improved;the physical treatment method is adopted to increase the settling distance and the settling time, the settling distance is extended for another 600 to 800m on the basis of 200m, and the settling timeis increased for another 25 to 27 hours on the basis of 10 hours; aquatic organisms or plants, such as fish, frogs, aquatic weeds and the like are adopted to process the wastewater, the ecological reconstruction is realized, the agricultural irrigation standards are met, the utilization ratio of floatation return water is improved from 86 percent to above 97 percent, and peaceful and friendly coexistence of human and environment is realized.

Description

Technical field [0001] The invention belongs to the technical field of mineral processing wastewater treatment and relates to a method for the treatment and recycling of tin ore processing wastewater. Background technique [0002] The treatment of mineral processing wastewater is an important manifestation of environmentally friendly enterprises and one of the important requirements of clean production. The waste water discharged from the crushing and beneficiation process of the beneficiation plant is called beneficiation wastewater. In non-ferrous metal beneficiation, 4~7m of water used for 1t ore flotation process 3 , Re-select water 20~26m 3 , Floating magnetic coupling chooses water 23~27m 3 , The water used for heavy floatation is 20~30m 3 , Excluding the amount of recycled water, most of the consumed water is discharged into the tailing pond in the form of tailings along with the tailings. [0003] Over the years, the treatment process of beneficiation wastewater has been t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCY02W10/37
Inventor 吴伯增陈建明黄承波梁增永王万忠朱文涛兰政伟黄艳黄润芝
Owner 广西华锡矿业有限公司铜坑矿业分公司
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