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Process for substep treatment and quality-based utilization of lead-zinc sulfide ore mine wastewater

A technology for mine wastewater and lead and zinc sulfide, which is applied in mining wastewater treatment, water/sewage treatment, water/sewage multi-stage treatment, etc. question

Inactive Publication Date: 2018-02-23
内蒙古森泰企业咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this process are: the treatment and utilization plan of mining wastewater is not considered; the processing volume of mineral processing wastewater is large and the processing cost is high; there is still a certain degree of impact on mineral processing indicators, etc.

Method used

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  • Process for substep treatment and quality-based utilization of lead-zinc sulfide ore mine wastewater
  • Process for substep treatment and quality-based utilization of lead-zinc sulfide ore mine wastewater
  • Process for substep treatment and quality-based utilization of lead-zinc sulfide ore mine wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Inner Mongolia Zhalantun Guosen Mining Co., Ltd.’s lead-zinc-silver polymetallic mine, the basic process used in on-site beneficiation production is as follows: raw ore grinding to -200 mesh accounts for about 70%, and lead and zinc are used in sequence under high alkalinity conditions. Flotation process, the lead flotation process is one coarse, three sweeping and four fine, the medium ore products are returned in sequence, and the lead flotation coarse concentrate is regrinded when processing sulfide ore (or when high-grade lead concentrate is required); Lead flotation tailings adopt a process of roughing, cleaning, and cleaning to recover zinc. The flotation lead-zinc concentrates are respectively thickened and dehydrated by ceramics, and then enter the concentrate warehouse for sale. The concentrate overflow water contains a large amount of copper, lead, zinc and other heavy metal ions and flotation reagents.

[0019] If the concentrate overflow water is mixed and ...

Embodiment 2

[0024] For the flotation tailings wastewater of lead-zinc-silver polymetallic ore of Inner Mongolia Zhalantun Guosen Mining Co., Ltd., 30g / t of potassium alum and 0.3g / t of anion PAM were added for coagulation reaction and flocculation sedimentation. After 1 After hours of precipitation, heavy metal ions such as copper, lead, zinc, cadmium, and chromium that affect the beneficiation indicators in the tailings wastewater are removed; then 30g / t of coconut shell-type powdered activated carbon is added and removed through a fiber ball filter tower Part of the organic residual chemicals and suspended solids that affect the beneficiation indicators. The comparison results of tailings wastewater quality before and after moderate treatment are shown in Table 1.

[0025] Table 1 Mineral processing wastewater and purified water quality testing results (mg / L)

[0026]

[0027] Most of the moderately treated wastewater is reused in the beneficiation process. It can be seen from Tabl...

Embodiment 3

[0031] Inner Mongolia Zhalantun City Guosen Mining Co., Ltd.'s lead-zinc-silver mining is open-pit mining, and the mining area is located in the Greater Khingan Mountains area. The water gushing out of the pit is weakly acidic and the heavy metal ions such as lead and zinc are higher than the surface drainage standards, so they cannot be discharged directly.

[0032] The pit water is pumped into a special high-level pool, and then part of it enters the greening water point of the factory area through the pipeline as greening water; part of it enters the tailings reservoir area of ​​the tailings dewatering dry stack, which is used for dust suppression and spraying water in the reservoir area.

[0033] Finally, after adding 200g / t of soda ash and 1 hour of precipitation, the redundant moderately treated tailings wastewater and pit water are then subjected to coarse, medium and fine three-layer sand filtration and microfiltration (the filter element is made of PP cotton or activate...

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Abstract

The invention provides a lead-zinc ore wastewater treatment and utilization technique which aims at solving the problems that the indexes are influenced by wastewater reuse and concentration, and theenvironment is polluted by the external emission of the wastewater. A wastewater treatment and reuse process comprises the steps of analyzing the wastewater quality of each site, combining with the requirements of mineral separation on the water quality, and carrying out targeted treatment and reuse. Concentrate wastewater is directly reused to a grading process, so that the indexes are not influenced, and the cost is saved; tailing wastewater is added with alums, PAM and activated carbon to be filtered and then the filtered tailing wastewater is reused; and stope wastewater is partially applied to afforestation and tailing pond dust fall, and the rest stope wastewater is added with sodium carbonate, is subjected to sand filtration and micro-filtration, the filtered stope wastewater is then applied to ceramic machines and is taken as drug dissolving water. According to the whole set of ore mine wastewater treatment and cycle use method provided by the invention, the zero external emission of wastewater is guaranteed, the mineral separation indexes are not influenced, the investment and the cost are low.

Description

technical field [0001] The invention discloses a technology for step-by-step treatment and quality-based utilization of lead-zinc sulfide mine wastewater (including wastewater from mining, ore dressing, etc.). Background technique [0002] The mining of mines, especially lead-zinc sulfide mines, seriously affects the circulation system of surface and groundwater, and destroys water resources. The various wastewaters produced in the production activities of lead-zinc sulfide mines mainly include mining wastewater, mineral processing wastewater, tailings wastewater and sewage generated by waste rocks washed by rainwater, among which underground wastewater is mostly acidic wastewater, and lead Zinc beneficiation wastewater is mostly alkaline wastewater, which often contains a large amount of heavy metals and other toxic and harmful elements (such as copper, lead, zinc, arsenic, cadmium, chromium, mercury, cyanide) and COD exceeding the relevant national standards , BOD5, suspe...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F101/20C02F101/22C02F103/10
CPCC02F1/001C02F1/283C02F1/44C02F1/56C02F5/00C02F9/00C02F2101/20C02F2101/22C02F2103/10
Inventor 姚青峰周长银
Owner 内蒙古森泰企业咨询有限公司
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