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

A mineral processing wastewater treatment cycle technology, applied in the direction of energy wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the waste of water resources, low utilization rate of return water, and ineffective treatment of mineral processing wastewater Very ideal and other issues, to achieve the effect of increasing the sedimentation rate and improving the utilization rate

Active Publication Date: 2011-04-27
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

AI Technical Summary

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

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Experimental program
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Effect test

Embodiment 1

[0032] In tin ore beneficiation, the combined beneficiation technology of flotation-magnetic separation-gravity separation is adopted. First, gravity separation and high-efficiency discarding technology are used for beneficiation. The production rate is 30%, and the tailings with a particle size of 3-4mm and a tin content of less than 0.1% have achieved the purpose of high-efficiency discarding, increased the content of tin metal entering the main process, and reduced the amount of water and chemicals used in the main process; Then apply selective grinding technology, adopt different grinding media and different grinding strength grinding processes according to different grades and particle sizes of tin ore, reduce over-grinding of tin ore, and make more than 70% of the metal by gravity separation The method is recovered, which reduces the flotation load and reagent consumption, and the recovery rate of cassiterite is increased to more than 65%; then the selective grinding tech...

Embodiment 2

[0034] In tin ore beneficiation, the combined beneficiation technology of flotation-magnetic separation-gravity separation is adopted. First, gravity separation and high-efficiency discarding technology are used for beneficiation. The yield rate is 30%, and the tailings with a particle size of 2-3mm and a tin content of less than 0.1% have achieved the purpose of high-efficiency discarding, increased the content of tin metal entering the main process, and reduced the water consumption and chemical dosage of the main process; Then apply selective grinding technology, adopt different grinding media and different grinding strength grinding processes according to different grades and particle sizes of tin ore, reduce over-grinding of tin ore, and make more than 70% of the metal by gravity separation The method is recovered, which reduces the flotation load and reagent consumption, and the recovery rate of cassiterite is increased to more than 65%; then the selective grinding techno...

Embodiment 3

[0036] In tin ore beneficiation, the combined beneficiation technology of flotation-magnetic separation-gravity separation is adopted. First, gravity separation and high-efficiency discarding technology are used for 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% have achieved the purpose of high-efficiency discarding, increased the content of tin metal entering the main process, and reduced the amount of water and chemicals used in the main process; Then apply selective grinding technology, adopt different grinding media and different grinding strength grinding processes according to different grades and particle sizes of tin ore, reduce over-grinding of tin ore, and make more than 70% of the metal by gravity separation The method is recovered, which reduces the flotation load and reagent consumption, and the recovery rate of cassiterite is increased to more than 65%; then, the selective grinding tec...

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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 treatment method 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 time is 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 beneficiation wastewater treatment and relates to a method for treating and recycling tin ore beneficiation wastewater. Background technique [0002] Mineral dressing wastewater treatment is an important embodiment of an environment-friendly enterprise and one of the important requirements for clean production. The wastewater discharged during the crushing and beneficiation process of the mineral processing plant is called the mineral processing wastewater. In non-ferrous metal beneficiation, 4-7m of water is used for flotation of 1 ton of ore 3 , re-select water 20 ~ 26m 3 , Floating Magnetic Union chooses water 23 ~ 27m 3 , the heavy-floating unit uses 20-30m of water 3 , Excluding the amount of recycled water, most of the consumed water is discharged into the tailings pond along with the tailings in the form of tailings slurry. [0003] Over the years, the treatment process of mineral processing w...

Claims

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Application Information

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Patent Type & Authority Applications(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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