CN103288250B - Recycling method of washing water by wet method metallurgy extraction - Google Patents
Recycling method of washing water by wet method metallurgy extraction Download PDFInfo
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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
Technical field
The present invention relates to field of hydrometallurgy, particularly a kind of hydrometallurgical extraction washing water circulation reuse method.
Background technology
The process of hydrometallurgy to be exactly metalliferous mineral raw material at the aqueous solution of acidic medium or alkaline medium carry out chemical treatment or organic solvent extraction, separating impurity, extraction metal and compound thereof.Hydrometallurgy compares with pyrometallurgy, and advantage has: 1) subject range is wider, and hydrometallurgy is applicable 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 extracting valuable component, and some the poisonous and hazardous component in raw material is mostly stayed in slag with sedimentary form, easily processes, little to the harm of environment; 4) cost is low; 5) fully utilize ability strong, the various valuable components in raw material can be extracted simultaneously; 6) hydrometallurgy more easily prepares high-purity even ultra-pure product; 7) wide variety of the product of hydrometallurgy acquisition.
Hydrometallurgy mainly comprises the following steps: step 1: useful component in raw material is proceeded to solution, namely leaches; Step 2: leaching solution is separated with residue, simultaneously by the solvent for metallurgy that becomes entrained in residue and metal ion washing and recycling; Step 3: the leaching purification of solution and enrichment, often adopts ion-exchange and solvent extraction technology or other chemical precipitation methods; Step 4: extract metal or compound from scavenging solution.Wherein in step 3 as according to solvent extraction, often need to adopt a large amount of water to wash extraction liquid.Main containing a large amount of positively charged ion and the negatively charged ion such as chlorion, sulfate radical such as hydrogen ion, valuable metal in extracting and washing water, contain the organism such as a large amount of grease, P204 in extraction water simultaneously.If directly discharged, will the waste of resource be caused, increase enterprise's production cost and discharge costs, meanwhile, in extracting and washing water valuable metal be emitted on waste resource while also will cause environmental pollution.
Summary of the invention
The object of the present invention is to provide one 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, is characterized in that, comprise the steps:
Step 1 pre-treatment: extracting and washing water removes grease, organism in washing water by oil removal by air bubbling, charcoal absorption;
Step 2 one-level electrodialysis: pretreated for step 1 extracting and washing water is carried out one-level electrodialysis, obtains 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, obtain ultrafiltration dialysis water and the dense water of ultrafiltration, ultrafiltration concentrate recirculation is to pre-treatment workshop section;
Step 4 osmosis filtration: ultrafiltration dialysis water is carried out osmosis filtration, obtain 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;
Step 5 secondary electrodialysis: the dense water of one-level electrodialysis in step 2 is carried out secondary electrodialysis, obtain secondary electrodialysis fresh water and the dense water of secondary electrodialysis, secondary electrodialysis fresh water returns one-level electrodialysis.
Further, also comprise step and dense for secondary electrodialysis water is carried out leaching except, purification, concentrated electrodialysis, multiple-effect evaporation process, reclaim the step of valuable metal positively charged ion in the dense water of secondary electrodialysis and NaCl, KCl.
Further, the extracting and washing water chloride ion content in 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, described one-level electrodialysis, secondary electrodialysis, concentrated electrodialysis adopt pole-reversing electroosmosis.
Further, the time of falling pole of described pole-reversing electroosmosis is 15 ~ 20min once pole.
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 removes grease, the organism in washing water by fuel-displaced, the charcoal absorption of air supporting;
Step 2 one-level electrodialysis: pretreated for step 1 extracting and washing water is carried out one-level electrodialysis, obtains 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 secondary electrodialysis, obtains 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, obtain ultrafiltration dialysis water and the dense water of ultrafiltration, ultrafiltration concentrate recirculation is to pre-treatment workshop section;
Step 5 osmosis filtration: ultrafiltration dialysis water is carried out osmosis filtration, obtain 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 and dense for one-level electrodialysis water and the dense water of secondary electrodialysis are carried out leaching except, purification, concentrated electrodialysis, multiple-effect evaporation, reclaim the step of valuable metal positively charged ion in the dense water of one-level electrodialysis and the dense water of secondary electrodialysis and NaCl, KCl.
Further, the extracting and washing water chloride ion content in 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, described one-level electrodialysis, secondary electrodialysis, concentrated electrodialysis adopt pole-reversing electroosmosis.
Further, the time of falling pole of described pole-reversing electroosmosis is 15 ~ 20min once pole.
Adopt technique scheme, hydrometallurgical extraction washing water circulation reuse method of the present invention, adopts electrodialysis+combined films technique to carry out the process of extracting and washing water, and having process can efficient recovery water resources and valuable metal, reduce enterprise's production cost, improve the advantages such as income.
Accompanying drawing explanation
Fig. 1 is hydrometallurgical extraction washing water circulation reuse method 1 schematic diagram of the present invention;
Fig. 2 is hydrometallurgical extraction washing water circulation reuse method 2 schematic 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 accompanying drawing 1, washing water are that wet lead-zinc method smelts extracting and washing water, and in water, chloride ion content is 3-4g/L, adopts pole-reversing electroosmosis, and after too much organizing experiment, concrete steps and result are:
Step 1 extracting and washing water removes grease, organism in washing water by oil removal by air bubbling, charcoal absorption;
Step 2 one-level electrodialysis: pretreated for step 1 extracting and washing water is carried out one-level electrodialysis, the dense water of one-level electrodialysis and one-level electrodialysis fresh water, in the dense water of one-level electrodialysis, chloride ion content is that in 8-10g/L and one-level electrodialysis fresh water, chloride ion content is 1.0-1.8g/L;
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, obtain ultrafiltration dialysis water and the dense water of ultrafiltration, ultrafiltration concentrate recirculation is to pre-treatment workshop section;
Step 4 osmosis filtration: ultrafiltration dialysis water is carried out osmosis filtration, obtains reverse osmosis concentrated water and reverse osmosis produced water, and in reverse osmosis produced water, chloride ion content is that 60-150mg/L can be back to production; In reverse osmosis concentrated water, chloride ion content is 3-4g/L, meets one-level electrodialysis inflow requirement, returns one-level electrodialysis;
Step 5 secondary electrodialysis: the dense water of one-level electrodialysis in step 2 is carried out secondary electrodialysis, obtain secondary electrodialysis fresh water and the dense water of secondary electrodialysis, in secondary electrodialysis fresh water, chloride ion content is 2.7-4.0g/L, return one-level electrodialysis, in the dense water of secondary electrodialysis, chloride ion content is 15-33g/L.
In addition, as required dense for secondary electrodialysis water can also be carried out leaching and remove, purify, concentrate electrodialysis, multiple-effect evaporation process, reclaim the valuable metal positively charged ion in the dense water of secondary electrodialysis and NaCl, KCl.
Embodiment 2
Adopt the hydrometallurgical extraction washing water circulation reuse method shown in accompanying drawing 2, washing water are that wet lead-zinc method smelts extracting and washing water, and in water, chloride ion content is 9-10g/L, adopts pole-reversing electroosmosis, and after too much organizing experiment, concrete steps and result are:
Step 1 pre-treatment: extracting and washing water removes grease, the organism in washing water by fuel-displaced, the charcoal absorption of air supporting;
Step 2 one-level electrodialysis: pretreated for step 1 extracting and washing water is carried out one-level electrodialysis, the dense water of one-level electrodialysis and one-level electrodialysis fresh water, in the dense water of one-level electrodialysis, chloride ion content is that in 25-40g/L and one-level electrodialysis fresh water, chloride ion content is 4-6g/L;
Step 3 secondary electrodialysis: one-level electrodialysis fresh water is carried out secondary electrodialysis, obtains secondary electrodialysis fresh water and the dense water of secondary electrodialysis, and in the dense water of secondary electrodialysis, chloride ion content is that in 18-20g/L and secondary electrodialysis fresh water, chloride ion content is 1-2g/L;
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, obtain ultrafiltration dialysis water and the dense water of ultrafiltration, ultrafiltration concentrate recirculation is to pre-treatment workshop section;
Step 5 osmosis filtration: ultrafiltration dialysis water is carried out osmosis filtration, obtains reverse osmosis concentrated water and reverse osmosis produced water, and in reverse osmosis produced water, chloride ion content is that 70-150mg/L can be back to production; In reverse osmosis concentrated water, chloride ion content is 3-4g/L, meets one-level electrodialysis inflow requirement, returns one-level electrodialysis;
In addition, as required dense for one-level electrodialysis water and the dense water of secondary electrodialysis can also be carried out leaching and remove, purify, concentrate electrodialysis, multiple-effect evaporation process, reclaim the valuable metal positively charged ion in the dense water of secondary electrodialysis and NaCl, KCl.
It should be noted that, above-described embodiment only smelts extracting and washing water with wet lead-zinc method, in water, chloride ion content is 3-4g/L and 9-10g/L exemplarily property description, but those skilled in the art, should know the reuse that aforesaid method can be widely used in extracting and washing water in hydrometallurgical technology, those skilled in the art can carry out various amendment to the present invention without departing from the spirit and scope of the present invention after reading present patent application.
Claims (6)
1. a hydrometallurgical extraction washing water circulation reuse method, is characterized in that, comprises the steps:
Step 1 pre-treatment: extracting and washing water removes grease, organism in washing water by oil removal by air bubbling, charcoal absorption;
Step 2 one-level electrodialysis: pretreated for step 1 extracting and washing water is carried out one-level electrodialysis, obtains 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, obtain ultrafiltration dialysis water and the dense water of ultrafiltration, ultrafiltration concentrate recirculation is to pre-treatment workshop section;
Step 4 osmosis filtration: ultrafiltration dialysis water is carried out osmosis filtration, obtain 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;
Step 5 secondary electrodialysis: the dense water of one-level electrodialysis in step 2 is carried out secondary electrodialysis, obtain secondary electrodialysis fresh water and the dense water of secondary electrodialysis, secondary electrodialysis fresh water returns one-level electrodialysis;
Also comprise dense for secondary electrodialysis water carried out leach, purify, concentrated electrodialysis, multiple-effect evaporation process, reclaim the step of valuable metal positively charged ion in the dense water of secondary electrodialysis and NaCl, KCl;
Described one-level electrodialysis, secondary electrodialysis, concentrated electrodialysis adopt pole-reversing electroosmosis;
The time of falling pole of described pole-reversing electroosmosis is 15 ~ 20min once pole.
2. 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 step 1 is 3 ~ 4g/L.
3. 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.
4. a hydrometallurgical extraction washing water circulation reuse method, is characterized in that, comprises the steps:
Step 1 pre-treatment: extracting and washing water removes grease, the organism in washing water by fuel-displaced, the charcoal absorption of air supporting;
Step 2 one-level electrodialysis: pretreated for step 1 extracting and washing water is carried out one-level electrodialysis, obtains 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 secondary electrodialysis, obtains 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, obtain ultrafiltration dialysis water and the dense water of ultrafiltration, ultrafiltration concentrate recirculation is to pre-treatment workshop section;
Step 5 osmosis filtration: ultrafiltration dialysis water is carried out osmosis filtration, obtain 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;
Also comprise dense for one-level electrodialysis water and the dense water of secondary electrodialysis carried out leach, purify, concentrated electrodialysis, multiple-effect evaporation process, reclaim the step of valuable metal positively charged ion in the dense water of one-level electrodialysis and the dense water of secondary electrodialysis and NaCl, KCl;
Described one-level electrodialysis, secondary electrodialysis, concentrated electrodialysis adopt pole-reversing electroosmosis, and the time of falling pole of described pole-reversing electroosmosis is 15 ~ 20min once pole.
5. a kind of hydrometallurgical extraction washing water circulation reuse method according to claim 4, is characterized in that, the extracting and washing water chloride ion content in step 1 is 9 ~ 10g/L.
6. a kind of hydrometallurgical extraction washing water circulation reuse method according to claim 4, is characterized in that, described extracting and washing water is the metallurgical extracting and washing water of wet lead-zinc method.
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| 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 |
| CN104150722B (en) * | 2014-09-04 | 2016-07-06 | 北京赛科康仑环保科技有限公司 | A kind of process technique of Nitrilon waste water |
| CN105585183B (en) * | 2016-03-07 | 2018-07-24 | 山东国信环境系统股份有限公司 | Copper making sewerage disposing retracting device and Zero emission method |
| 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 |
| CN112194154B (en) * | 2020-10-19 | 2021-08-24 | 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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| US20080277341A1 (en) * | 2007-05-10 | 2008-11-13 | Nai-Jen Huang | Method for Making Reverse Osmosis Permeate Water and Mineral Water From Deep Seawater |
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Application publication date: 20130911 Assignee: Xiamen Shida membrane Engineering Co.,Ltd. Assignor: XIAMEN STARMEM TECHNOLOGY CO.,LTD. Contract record no.: X2021980014823 Denomination of invention: A recycling method of hydrometallurgical extraction washing water Granted publication date: 20150715 License type: Exclusive License Record date: 20211221 |
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Effective date of registration: 20230504 Address after: No. 1159 Chunguang Road, Industrial Zone, Xiamen Torch High tech Zone (Xiang'an), Xiamen City, Fujian Province, 361101, Shida Film Technology Industrial Park Patentee after: Xiamen Shida Membrane Environmental Protection Technology Co.,Ltd. Address before: No. 208-5, Shengye Building, No. 2 Weili Road, Information Optoelectronics Park, Xiamen Torch High tech Zone, Xiamen City, Fujian Province, 361009 Patentee before: XIAMEN STARMEM TECHNOLOGY CO.,LTD. |