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Method for cyclic utilizing mineral dressing waste water from sulphur ore of lead-zinc

A technology for beneficiation wastewater and sulfide ore, which is applied in adsorption water/sewage treatment, neutralized water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. It can solve the problems of low utilization rate of chemical components, environmental pollution and high treatment costs.

Inactive Publication Date: 2005-01-12
南京银茂铅锌矿业有限公司 +1
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  • Abstract
  • Description
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the processing cost of lead-zinc sulfide ore mineral processing wastewater is high, or the utilization rate of chemical components in mineral processing wastewater is low, or the mineral processing wastewater is reused in production and affects the mineral processing index, or pollutes the environment. An economical, applicable, non-affecting beneficiation index, turning waste into wealth, and a lead-zinc sulfide ore beneficiation wastewater treatment method that can realize the recycling of beneficiation wastewater

Method used

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  • Method for cyclic utilizing mineral dressing waste water from sulphur ore of lead-zinc

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Add a certain concentration of aluminum sulfate to the mineral processing wastewater, mix well, let it stand for 30 minutes, and then take a sample for analysis. The treatment results are shown in Table 1. When the amount of aluminum sulfate is 20-40mg / L, part of the heavy metal ion concentration and turbidity of the mixed wastewater reach a lower level. The water quality is also relatively clear.

[0014] Dosage of Aluminum Sulfate

Embodiment 2

[0016] Add a certain concentration of aluminum sulfate and flocculant to the mineral processing wastewater, mix well, let stand for 30 minutes, and then take samples for analysis. See Table 2 for the treatment results. It can be seen from Table 2 that when the aluminum sulfate is 40mg / L, the flocculant in the range of 0.2-0.5mg / L has a better treatment effect.

[0017] Aluminum sulfate=20mg / L, Ph=11.30

Embodiment 3

[0019] Add a certain amount of aluminum sulfate and flocculant to the waste water, mix well, and let it stand for 30 minutes, then add different amounts of powdered activated carbon, mix evenly, stand still and take samples for analysis. The amount of powdered activated carbon added and the results are shown in Table 3. The COD in the mixed wastewater decreases with the increase of powdered activated carbon, and the foaming performance decreases. Therefore, when the foaming agent and other organic refractory agents in the mixed wastewater accumulate to a certain extent, it is an effective way to use activated carbon to improve the quality of the wastewater and reduce the impact on the flotation index.

[0020] Powdered activated carbon (mg / L)

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Abstract

The waste water circular utilization provided by this invention is to use mineral operation waste water for milling of ores prodn. zenc tail water can be direct reused to zenc selecting operation, flume water can be direct reused to sulphur selecting operation, mineral operation waste water can be reused for ore grinding, lead selecting and mineral operation after being processed suitably. Said processes include: to add sulphuric in mineral operation waste water to adjust pH value to 8-11, add flocculator and aluminum suffate to do coagulating sedimentation, then to do adsorption to the waste water being processed by coagulating sedimention by adding active carbon again, to add defoaming agent into the mineral operation waste water.

Description

technical field [0001] The invention relates to a method for treating and reusing mine beneficiation wastewater, in particular to a method for recycling the beneficiation wastewater of lead-zinc sulfide ore. Background technique [0002] At present, there are three treatment methods for mineral processing wastewater: one is the natural settlement method of tailings pond, that is, the mineral processing wastewater and tailings are transported to the tailings pond through a sewage pump and then discharged after natural settlement. The discharged wastewater greatly exceeds the discharge standard. Although the method is simple, the effect is very poor, which has caused serious pollution to the environment; one is to directly reuse part of the mineral processing production, but it has an adverse effect on the mineral processing indicators, and the rest still has serious pollution to the environment. The third is the dosing method, using general wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/52C02F1/66
Inventor 孙水裕王方汉缪建成肖斌云刘如意
Owner 南京银茂铅锌矿业有限公司
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