CN103288250A - Recycling method of washing water by wet method metallurgy extraction - Google Patents

Recycling method of washing water by wet method metallurgy extraction Download PDF

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CN103288250A
CN103288250A CN2013101604288A CN201310160428A CN103288250A CN 103288250 A CN103288250 A CN 103288250A CN 2013101604288 A CN2013101604288 A CN 2013101604288A CN 201310160428 A CN201310160428 A CN 201310160428A CN 103288250 A CN103288250 A CN 103288250A
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water
electrodialysis
washing water
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extracting
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CN103288250B (en
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卢伯福
陈洪景
虞美辉
李振峰
雷细良
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Xiamen Shida Membrane Environmental Protection Technology Co ltd
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XIAMEN STARMEM FILM TECHNOLOGY Co Ltd
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Abstract

The invention discloses a recycling method of washing water by wet method metallurgy extraction, which is characterized in that the invention comprises the steps of pretreatment, electrodialysis, ultrafiltration filtering, anti-penetration filtering, secondary electrodialysis, etc. The invention employs the technology scheme, and recycling method of washing water by wet method metallurgy extraction employs a treatment of electrodialysis + combined membrane technology for extracting washing water, thereby effectively recycling water resource and valuable metal, reducing enterprise production cost and improving income, etc.

Description

A kind of hydrometallurgical extraction washing water circulation reuse method
Technical field
The present invention relates to the hydrometallurgy field, particularly a kind of hydrometallurgical extraction washing water circulation reuse method.
Background technology
Hydrometallurgy is exactly the metalliferous mineral raw material carries out chemical treatment or organic solvent extraction, separating impurity, extraction metal and compound thereof at the aqueous solution of acidic medium or alkaline medium process.Hydrometallurgy and pyrometallurgy are compared, and advantage has: 1) subject range is wider, and hydrometallurgy is fit to the raw material of high, medium and low grade, and pyrometallurgy requires to use high-grade raw material; 2) energy consumption is low: hydrometallurgy is generally carried out at a lower temperature, and energy consumption is low, and pyrometallurgy is all at high temperature carried out; 3) technological process environmental protection, hydrometallurgy is in the process of extracting valuable component, and the poisonous and hazardous component of some in the raw material is mostly stayed in the slag with sedimentary form, handles easily, and is little to the harm of environment; 4) cost is low; 5) comprehensive utilization ability is strong, can extract the various valuable components in the raw material simultaneously; 6) hydrometallurgy is easier prepares high-purity even ultra-pure product; 7) the kind variation of the product of hydrometallurgy acquisition.
Hydrometallurgy mainly comprises the following steps: step 1: change useful component in the raw material over to solution, i.e. leaching; Step 2: leaching solution separates with residue, will become entrained in solvent for metallurgy and metal ion washing and recycling in the residue simultaneously; Step 3: purification and the enrichment of leaching solution, often adopt ion-exchange and solvent extraction technology or other chemical precipitation methods; Step 4: extract metal or compound from scavenging solution.If wherein adopt solvent extraction in the step 3, often need to adopt a large amount of water that extraction liquid is washed.Mainly contain negatively charged ion such as positively charged ion such as a large amount of hydrogen ions, valuable metal and chlorion, sulfate radical in the extracting and washing water, contain organism such as a large amount of greases, P204 in the extraction water simultaneously.If directly discharging will cause the waste of resource, increase enterprise's production cost and discharge costs, simultaneously, being emitted on when wasting resource of valuable metal also will be caused environmental pollution in the extracting and washing water.
Summary of the invention
The object of the present invention is to provide a kind of can efficient recovery water resources and valuable metal, reduce enterprise's production cost, improve the hydrometallurgical extraction washing water circulation reuse method of income.
For achieving the above object, technical scheme proposed by the invention is: a kind of hydrometallurgical extraction washing water circulation reuse method, it is characterized in that, and comprise the steps:
Step 1 pre-treatment: extracting and washing water is removed grease, organism in the washing water by oil removal by air bubbling, charcoal absorption;
Step 2 one-level electrodialysis: the pretreated extracting and washing water of step 1 is carried out the one-level electrodialysis, get the dense water of one-level electrodialysis and one-level electrodialysis fresh water;
Step 3 ultra-filtration filters: one-level electrodialysis fresh water is carried out ultra-filtration filters, get the dense water of ultrafiltration dialysis water and ultrafiltration, the ultrafiltration concentrate recirculation is to pre-treatment workshop section;
Step 4 osmosis filtration: ultrafiltration dialysis water is carried out osmosis filtration, get reverse osmosis concentrated water and reverse osmosis produced water, reverse osmosis produced water is back to production; Reverse osmosis concentrated water returns one-level electrodialysis water inlet;
The electrodialysis of step 5 secondary: the dense water of one-level electrodialysis in the step 2 is carried out the secondary electrodialysis, get secondary electrodialysis fresh water and the dense water of secondary electrodialysis, secondary electrodialysis fresh water returns the one-level electrodialysis.
Further, also comprise step with the dense water of secondary electrodialysis soak except, purify, concentrate electrodialysis, multiple-effect evaporation is handled, and reclaims valuable metal positively charged ion in the dense water of secondary electrodialysis and the step of NaCl, KCl.
Further, the extracting and washing water chloride ion content in the step 1 is preferably 3 ~ 4g/L.
Further, described extracting and washing water is the metallurgical extracting and washing water of wet lead-zinc method.
Further, pole-reversing electroosmosis is adopted in described one-level electrodialysis, secondary electrodialysis, concentrated electrodialysis.
Further, the time of falling the utmost point of described pole-reversing electroosmosis is the once utmost point of 15 ~ 20min.
The present invention also comprises another kind of hydrometallurgical extraction washing water circulation reuse method, it is characterized in that, comprises the steps:
Step 1 pre-treatment: extracting and washing water is fuel-displaced by air supporting, grease, organism in the washing water are removed in charcoal absorption;
Step 2 one-level electrodialysis: the pretreated extracting and washing water of step 1 is carried out the one-level electrodialysis, get the dense water of one-level electrodialysis and one-level electrodialysis fresh water;
Step 3 secondary electrodialysis: one-level electrodialysis fresh water is carried out the secondary electrodialysis, get secondary electrodialysis fresh water and the dense water of secondary electrodialysis;
Step 4 ultra-filtration filters: secondary electrodialysis fresh water is carried out ultra-filtration filters, get the dense water of ultrafiltration dialysis water and ultrafiltration, the ultrafiltration concentrate recirculation is to pre-treatment workshop section;
Step 5 osmosis filtration: ultrafiltration dialysis water is carried out osmosis filtration, get reverse osmosis concentrated water and reverse osmosis produced water, reverse osmosis produced water is back to production; Reverse osmosis concentrated water returns one-level electrodialysis water inlet.
Further, also comprise step with the dense water of one-level electrodialysis and the dense water of secondary electrodialysis soak except, purify, concentrate electrodialysis, multiple-effect evaporation, reclaim valuable metal positively charged ion in the dense water of one-level electrodialysis and the dense water of secondary electrodialysis and the step of NaCl, KCl.
Further, the extracting and washing water chloride ion content in the step 1 is preferably 9 ~ 10g/L.
Further, described extracting and washing water is the metallurgical extracting and washing water of wet lead-zinc method.
Further, pole-reversing electroosmosis is adopted in described one-level electrodialysis, secondary electrodialysis, concentrated electrodialysis.
Further, the time of falling the utmost point of described pole-reversing electroosmosis is the once utmost point of 15 ~ 20min.
Adopt technique scheme, hydrometallurgical extraction washing water circulation reuse method of the present invention adopts electrodialysis+combined films technology to carry out the processing of extracting and washing water, and having processing can efficient recovery water resources and valuable metal, reduce enterprise's production cost, improve advantages such as income.
Description of drawings
Fig. 1 is hydrometallurgical extraction washing water circulation reuse method 1 synoptic diagram of the present invention;
Fig. 2 is hydrometallurgical extraction washing water circulation reuse method 2 synoptic diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Embodiment 1
Adopt the hydrometallurgical extraction washing water circulation reuse method shown in the accompanying drawing 1, washing water are smelted extracting and washing water for the wet lead-zinc method, and chloride ion content is 3-4g/L in the water, adopts pole-reversing electroosmosis, and after too much organizing experiment, concrete steps and result are:
Step 1 extracting and washing water is removed grease, organism in the washing water by oil removal by air bubbling, charcoal absorption;
Step 2 one-level electrodialysis: the pretreated extracting and washing water of step 1 is carried out the one-level electrodialysis, get the dense water of one-level electrodialysis and one-level electrodialysis fresh water, chloride ion content is that chloride ion content is 1.0-1.8g/L in 8-10g/L and the one-level electrodialysis fresh water in the dense water of one-level electrodialysis;
Step 3 ultra-filtration filters: one-level electrodialysis fresh water is carried out ultra-filtration filters, remove larger molecular organics, avoid the enrichment of larger molecular organics in recovery system, get the dense water of ultrafiltration dialysis water and ultrafiltration, the ultrafiltration concentrate recirculation is to pre-treatment workshop section;
Step 4 osmosis filtration: ultrafiltration dialysis water is carried out osmosis filtration, get reverse osmosis concentrated water and reverse osmosis produced water, chloride ion content is that 60-150mg/L can be back to production in the reverse osmosis produced water; Chloride ion content is 3-4g/L in the reverse osmosis concentrated water, satisfies one-level electrodialysis water inlet requirement, returns the one-level electrodialysis;
Step 5 secondary electrodialysis: the dense water of one-level electrodialysis in the step 2 is carried out the secondary electrodialysis, get secondary electrodialysis fresh water and the dense water of secondary electrodialysis, chloride ion content is 2.7-4.0g/L in the secondary electrodialysis fresh water, return the one-level electrodialysis, chloride ion content is 15-33g/L in the dense water of secondary electrodialysis.
In addition, can also as required the dense water of secondary electrodialysis be soaked and remove, purify, concentrate electrodialysis, multiple-effect evaporation processing, reclaim valuable metal positively charged ion and NaCl, KCl in the dense water of secondary electrodialysis.
Embodiment 2
Adopt the hydrometallurgical extraction washing water circulation reuse method shown in the accompanying drawing 2, washing water are smelted extracting and washing water for the wet lead-zinc method, and chloride ion content is 9-10g/L in the water, adopts pole-reversing electroosmosis, and after too much organizing experiment, concrete steps and result are:
Step 1 pre-treatment: extracting and washing water is fuel-displaced by air supporting, grease, organism in the washing water are removed in charcoal absorption;
Step 2 one-level electrodialysis: the pretreated extracting and washing water of step 1 is carried out the one-level electrodialysis, get the dense water of one-level electrodialysis and one-level electrodialysis fresh water, chloride ion content is that chloride ion content is 4-6g/L in 25-40g/L and the one-level electrodialysis fresh water in the dense water of one-level electrodialysis;
The electrodialysis of step 3 secondary: one-level electrodialysis fresh water is carried out the secondary electrodialysis, get secondary electrodialysis fresh water and the dense water of secondary electrodialysis, chloride ion content is that chloride ion content is 1-2g/L in 18-20g/L and the secondary electrodialysis fresh water in the dense water of secondary electrodialysis;
Step 4 ultra-filtration filters: secondary electrodialysis fresh water is carried out ultra-filtration filters, remove larger molecular organics, avoid the enrichment of larger molecular organics in recovery system, get the dense water of ultrafiltration dialysis water and ultrafiltration, the ultrafiltration concentrate recirculation is to pre-treatment workshop section;
Step 5 osmosis filtration: ultrafiltration dialysis water is carried out osmosis filtration, get reverse osmosis concentrated water and reverse osmosis produced water, chloride ion content is that 70-150mg/L can be back to production in the reverse osmosis produced water; Chloride ion content is 3-4g/L in the reverse osmosis concentrated water, satisfies one-level electrodialysis water inlet requirement, returns the one-level electrodialysis;
In addition, can also be as required with the dense water of one-level electrodialysis and the dense water of secondary electrodialysis soak except, purify, concentrate electrodialysis, multiple-effect evaporation is handled, and reclaims valuable metal positively charged ion and NaCl, KCl in the dense water of secondary electrodialysis.
Need to prove, above-described embodiment is only smelted extracting and washing water with the wet lead-zinc method, chloride ion content is that 3-4g/L and 9-10g/L are as exemplary description in the water, but those skilled in the art, should know the reuse that aforesaid method can be widely used in extracting and washing water in the hydrometallurgical technology, those skilled in the art can carry out various modifications to the present invention under the situation that does not break away from the spirit and scope of the present invention after reading present patent application.

Claims (10)

1. a hydrometallurgical extraction washing water circulation reuse method is characterized in that, comprises the steps:
Step 1 pre-treatment: extracting and washing water is removed grease, organism in the washing water by oil removal by air bubbling, charcoal absorption;
Step 2 one-level electrodialysis: the pretreated extracting and washing water of step 1 is carried out the one-level electrodialysis, get the dense water of one-level electrodialysis and one-level electrodialysis fresh water;
Step 3 ultra-filtration filters: one-level electrodialysis fresh water is carried out ultra-filtration filters, get the dense water of ultrafiltration dialysis water and ultrafiltration, the ultrafiltration concentrate recirculation is to pre-treatment workshop section;
Step 4 osmosis filtration: ultrafiltration dialysis water is carried out osmosis filtration, get reverse osmosis concentrated water and reverse osmosis produced water, reverse osmosis produced water is back to production; Reverse osmosis concentrated water returns one-level electrodialysis water inlet;
The electrodialysis of step 5 secondary: the dense water of one-level electrodialysis in the step 2 is carried out the secondary electrodialysis, get secondary electrodialysis fresh water and the dense water of secondary electrodialysis, secondary electrodialysis fresh water returns the one-level electrodialysis.
2. a kind of hydrometallurgical extraction washing water circulation reuse method according to claim 1, it is characterized in that, also comprise the dense water of secondary electrodialysis is leached, purifies, concentrates electrodialysis, multiple-effect evaporation processing, the valuable metal positively charged ion in the dense water of recovery secondary electrodialysis and the step of NaCl, KCl.
3. a kind of hydrometallurgical extraction washing water circulation reuse method according to claim 1 is characterized in that, the extracting and washing water chloride ion content in the step 1 is 3 ~ 4g/L.
4. a kind of hydrometallurgical extraction washing water circulation reuse method according to claim 1 is characterized in that, described extracting and washing water is the metallurgical extracting and washing water of wet lead-zinc method.
5. a kind of hydrometallurgical extraction washing water circulation reuse method according to claim 3 is characterized in that, pole-reversing electroosmosis is adopted in described one-level electrodialysis, secondary electrodialysis, concentrated electrodialysis; The time of falling the utmost point of described pole-reversing electroosmosis is the once utmost point of 15 ~ 20min.
6. a hydrometallurgical extraction washing water circulation reuse method is characterized in that, comprises the steps:
Step 1 pre-treatment: extracting and washing water is fuel-displaced by air supporting, grease, organism in the washing water are removed in charcoal absorption;
Step 2 one-level electrodialysis: the pretreated extracting and washing water of step 1 is carried out the one-level electrodialysis, get the dense water of one-level electrodialysis and one-level electrodialysis fresh water;
Step 3 secondary electrodialysis: one-level electrodialysis fresh water is carried out the secondary electrodialysis, get secondary electrodialysis fresh water and the dense water of secondary electrodialysis;
Step 4 ultra-filtration filters: secondary electrodialysis fresh water is carried out ultra-filtration filters, get the dense water of ultrafiltration dialysis water and ultrafiltration, the ultrafiltration concentrate recirculation is to pre-treatment workshop section;
Step 5 osmosis filtration: ultrafiltration dialysis water is carried out osmosis filtration, get reverse osmosis concentrated water and reverse osmosis produced water, reverse osmosis produced water is back to production; Reverse osmosis concentrated water returns one-level electrodialysis water inlet.
7. a kind of hydrometallurgical extraction washing water circulation reuse method according to claim 6, it is characterized in that, also comprise the dense water of one-level electrodialysis and the dense water of secondary electrodialysis are leached, purify, concentrate electrodialysis, multiple-effect evaporation processing, the valuable metal positively charged ion in the recovery dense water of one-level electrodialysis and the dense water of secondary electrodialysis and the step of NaCl, KCl.
8. a kind of hydrometallurgical extraction washing water circulation reuse method according to claim 6 is characterized in that, the extracting and washing water chloride ion content in the step 1 is 9 ~ 10g/L.
9. a kind of hydrometallurgical extraction washing water circulation reuse method according to claim 6 is characterized in that, described extracting and washing water is the metallurgical extracting and washing water of wet lead-zinc method.
10. a kind of hydrometallurgical extraction washing water circulation reuse method according to claim 7, it is characterized in that, pole-reversing electroosmosis is adopted in described one-level electrodialysis, secondary electrodialysis, concentrated electrodialysis, and the time of falling the utmost point of described pole-reversing electroosmosis is the once utmost point of 15 ~ 20min.
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CN104150722A (en) * 2014-09-04 2014-11-19 北京赛科康仑环保科技有限公司 Treatment process for acrylic fiber waste water
CN105585183A (en) * 2016-03-07 2016-05-18 山东国信环境系统股份有限公司 Copper smelting reclaimed water treatment and recovery device and zero emission method
CN105906111A (en) * 2016-05-11 2016-08-31 合肥科佳高分子材料科技有限公司 Method for separating salt from coal-chemical-industry wastewater through electroosmosis technique
CN110697960A (en) * 2019-10-16 2020-01-17 德蓝水技术股份有限公司 Method for separating salt from printing and dyeing wastewater through electrodialysis technology
CN112194154A (en) * 2020-10-19 2021-01-08 广东省科学院资源综合利用研究所 Method for extracting rubidium chloride from rubidium-containing high-salt brine in short process

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Publication number Priority date Publication date Assignee Title
CN103861317A (en) * 2014-02-25 2014-06-18 厦门世达膜科技有限公司 Soxhlet extraction device based on membrane technology
CN104150722A (en) * 2014-09-04 2014-11-19 北京赛科康仑环保科技有限公司 Treatment process for acrylic fiber waste water
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CN105585183A (en) * 2016-03-07 2016-05-18 山东国信环境系统股份有限公司 Copper smelting reclaimed water treatment and recovery device and zero emission method
CN105906111A (en) * 2016-05-11 2016-08-31 合肥科佳高分子材料科技有限公司 Method for separating salt from coal-chemical-industry wastewater through electroosmosis technique
CN105906111B (en) * 2016-05-11 2018-11-06 合肥科佳高分子材料科技有限公司 A method of salt is detached from coal chemical industrial waste water by electrodialytic technique
CN110697960A (en) * 2019-10-16 2020-01-17 德蓝水技术股份有限公司 Method for separating salt from printing and dyeing wastewater through electrodialysis technology
CN112194154A (en) * 2020-10-19 2021-01-08 广东省科学院资源综合利用研究所 Method for extracting rubidium chloride from rubidium-containing high-salt brine in short process

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Application publication date: 20130911

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