CN104162536A - Harmless treatment and resource utilization method of waste cathode - Google Patents
Harmless treatment and resource utilization method of waste cathode Download PDFInfo
- Publication number
- CN104162536A CN104162536A CN201410377437.7A CN201410377437A CN104162536A CN 104162536 A CN104162536 A CN 104162536A CN 201410377437 A CN201410377437 A CN 201410377437A CN 104162536 A CN104162536 A CN 104162536A
- Authority
- CN
- China
- Prior art keywords
- stripping
- waste
- water
- treatment
- old cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention relates to a harmless treatment and resource utilization method of a waste cathode. The method comprises the following steps: crushing the waste cathode and uniformly mixing to obtain waste cathode pieces; soaking the waste cathode pieces with water; performing solid-liquid separation after dissolution treatment to obtain ore body and dissolute water, wherein the suitable condition for dissolution treatment is as follows: the crushing grain size before dissolution treatment is 0-10mm; the temperature after dissolution treatment is 80-95 DEG C and the treatment time is 3-4hrs; when the temperature rises, the treatment time can be shortened. According to the method, the waste cathode is subjected to high temperature dissolution treatment so as to remove solvable matters in the waste cathode, thus the waste cathode is converted to a general solid waste from dangerous solid waste and the carbon content is further improved; the waste cathode can be conveniently transported, stored and treated or utilized.
Description
Technical field
The present invention relates to the waste and old negative electrode harmless treatment of electrolytic aluminium, comprehensive reutilization and environmental technology field, is the waste and old negative electrode harmless treatment of a kind of electrolytic aluminium and method for upgrading, and the method is applicable to the comprehensive reutilization of the waste and old negative electrode of electrolytic aluminium.
Technical background
The main equipment of Aluminum Electrolysis Production is aluminium cell.In Aluminium Electrolysis process, carbon cathode is because the infiltration of the impurity such as fluorine and sodium is expanded and scrapped, the replacing that need carry out large repairs every 3～5 years, and the waste and old cathode producing in overhaul process is one of main solid waste of producing of aluminium industry.It is reported, one ton of aluminium of every production, approximately produces waste and old cathode 30～50kg.Along with the increase year by year of aluminium output, the waste and old cathode that the annual output of China is a large amount of.Taking 2013 as example, electrolytic aluminium annual production reaches 2,195 ten thousand tons, and output waste and old cathode is 65.85～131.7 ten thousand tons, and its discharge capacity can't neglect, and is the trend of cumulative year after year.The about 2000mg/L of average solvable F-content, the about 15mg/L of CN-in aluminum cell waste cathode material, superstate hazardous waste judging standard F-50mg/L, CN-5mg/L (GB5085.3-1996) far away, belong to hazardous solid waste, forbids arbitrarily abandoning.
Show after testing, in waste cathode material, graphitized charcoal accounts for 30～70%; Electrolyte ingredient accounts for 70～30%, is mainly ice crystal, sodium fluoride and calcirm-fluoride etc., is a kind of mineral resources that are rich in graphite and villiaumite.At present aluminum electrolysis waste cathode material is mainly adopted the mode processing of security landfill, not only occupy cultivated land, and cannot thoroughly eliminate its harm, and cause the waste of resource.
At present existing multiple comprehensive utilization process, as floatation, soda acid leaching, calcination processing etc., all because the reasons such as complex process, effect be undesirable are not widely used.
For this reason, seek newly for waste cathode material harmless treatment and comprehensive Utilization Ways, there is important using value.
Summary of the invention
The defect or the deficiency that exist for prior art, the object of the invention is to a kind of waste and old cathode harmless treatment and resource utilization method.
In order to realize above-mentioned task, the present invention takes following technical solution:
A kind of waste and old cathode harmless treatment and resource utilization method, method comprises:
Fragmentation mixes processing: waste and old cathode is carried out to fragmentation and mix processing, obtain
waste and old cathode fragment;
Stripping processing: be soaked in water
waste and old cathode fragment;
Separation of Solid and Liquid: stripping is carried out Separation of Solid and Liquid after processing and obtained
ore body after stripping and stripping water.
Preferably, the granularity of waste and old cathode fragment is 0～10mm.
Preferably, the stripping processing time is not less than 2hr, and stripping treatment temperature is 80～95 DEG C, and it is 20～45 that liquid-solid ratio is processed in stripping.
Further, described stripping water is as the raw material that reclaims fluoride.
Further, the ore body after stripping is carried out to rinsing.
Preferably, described stripping processing and rinsing are carried out in 3 stripping ponds, and 3 stripping ponds are respectively in stripping, rinsing, discharging and reinforced state.
Further, the water that rinsing produces is for stripping processing.
Further, stripping water is carried out to defluorination processing, defluorination liquid after treatment is for rinsing.
Further, the water that stripping water and rinsing produce carries out heat exchange.
Compared with prior art, the invention has the advantages that:
Method of the present invention is by the high temperature stripping processing to waste and old cathode, remove wherein DDGS, make waste and old cathode be converted into general solid waste by dangerous solid waste, its carbon content is further improved, can transport easily, store up and process or utilize.
Method of the present invention the fragmentation of waste and old cathode carbon block with mix, on basis in small, broken bits, carry out high temperature stripping processing.And design by rational dissolving-out process, make the fluorine-containing DDGS Fast Stripping in waste and old cathode, reach the target that dangerous solid waste is converted into general solid waste, be convenient to store and comprehensive utilization.
Brief description of the drawings
Fig. 1 is the innoxious of aluminum electrolysis waste cathode of the present invention and resource comprehensive utilization process flow chart.
Detailed description of the invention
The waste and old cathode (waste and old cathode that dismantle sorted, respectively sort out aluminium flake and electrolyte block) of the present invention after to sorting be broken, mix, to ensure the stable of composition etc.In order to ensure Blending Efficiency of Blending, should there is certain cathode waste storage.Particle size after cracking to 0～10mm.
In waste and old cathode, approximately contain 11% water-soluble substances, and dissolution rate is very fast.The present invention enters stripping pond to broken worn-out negative electrode and carries out immersion treatment, and the stripping processing time is not less than 2hr.Solvent adopts water for industrial use, makes full use of temperature and raises, and dissolution time shortens, the sufficient feature of stripping, and (stripping temperature improves, and dissolution time can suitably shorten for 80～95 DEG C of stripping temperature.For preventing the generation of a large amount of gases, heating is limited not there is not boiling).In order to ensure effective removal of solvable fluorine in stripping solid after treatment, after stripping, carry out rinsing processing.Adopt circulation and the heat exchange design of stripping and washings, reclaim the waste heat of stripping processing water.
The technique of centrifugal separator that Separation of Solid and Liquid of the present invention can adopt roller separation machine---flushing---.The fluorine stripping of the rear solid of separation etc. reaches general industry solid waste standard, and carbon content improves 5～8% simultaneously; To stripping liquid after treatment sink fluorine process or evaporation obtain fluoride or return to villiaumite production process.Washings can directly be processed water as stripping.
Separation of Solid and Liquid of the present invention can, according to stripping, rinsing, discharging and recharge link, adopt the processing mode of three stripping groove alternate runs.Design by reasonable process, realize recycling hot stripping water waste heat.
The present invention can adopt heat exchanger that the water of high temperature stripping water and rinsing generation is carried out to heat exchange, and realization recycles hot stripping water waste heat, reduces the energy consumption of high temperature stripping.
Below the specific embodiment that inventor provides, so that technical scheme of the present invention is further explained to explanation.
Embodiment 1 produces the waste and old cathode utilization of the electrolysis aluminum production enterprises of 200,000 tons of aluminium per year
(1) basic condition:
The electrolytic aluminium factory that yearly productive capacity is 200,000 tons, adopts 300kA large-scale pre-baked cell electrolysis tech and prebaked anode roasting technology.8000 tons of year waste and old cathode generations.As follows with reference to negative electrode composition: carbon content 33～65%, degree of graphitization is up to 70～88%; Electrolyte ingredient content is 65～32%.
(2) application mode
To the waste and old cathode of collecting adopt broken, mix after, carry out in small, broken bitsly, waste and old cathode is crushed to 5mm following (employing closed circuit crushing).
3 stripping ponds (this does not represent with A, B, C) are set, respectively in stripping, rinsing, discharging and reinforced state, alternately operating.Stripping treatment temperature 90-95 DEG C, washings are normal-temperature water, it is 30-40 that liquid-solid ratio is processed in stripping.
1) state 1:A stripping, B rinsing, C discharging are with reinforced.Waste and old cathode broken material stripping pond A carries out stripping processing, and stripping water is B pond washings, and regulating stripping concentration is 50%, dissolution time 2 hours.C pond is in discharging and reinforced state;
2) state 2:A rinsing, B discharging and reinforced, C stripping.A stripping finishes, and water is wherein emitted, and carries out defluorination processing or returns to villiaumite system; Then add defluorination middle water after treatment to carry out rinsing processing (referring to Fig. 1) to it; Washings in the B of stripping pond are put into the C dissolving tank that adds virgin material.B dissolving tank completes discharging and recharge after rinsing, connects centrifugal dehydration, below water content to 5% after discharging.
3) state 3:A discharging and reinforced, B stripping, C rinsing.B pond enters dissolving operation, and dissolved water is the washings of dissolving tank A.C enters rinsing state, and washings are the defluorination water that returns after treatment.Then A discharging, carry out solid-liquid crude separation, add virgin material.
In order to make full use of the waste heat of stripping water, after stripping hot water after treatment and washings adopt pipe heat exchanger heat exchange, temperature adjustment enters stripping treatment pond again.
System enters a new samsara.
Treatment process as shown in Figure 1.Operation slot handoff relation is as shown in table 1.
Table 1 alternate treatment operation slot switching sequence graph of a relation
The product index obtaining after processing is as shown in table 2 below.
Table 2 is processed the key technical indexes obtaining
(3) application result
Can realize the harmless treatment of waste and old cathode, be convenient to store and further processing and utilizing.Processing waste water has been realized and having been recycled.The waste and old cathode producing is all recycled as steel-smelting and carburating agent after harmless treatment.
Embodiment 2 produces the application of 600,000 tons of aluminium electrolysis enterprises per year
(1) basic condition
The electrolytic aluminium factory that yearly productive capacity is 600,000 tons, adopts 300kA large-scale pre-baked cell electrolysis tech and prebaked anode roasting technology.Year waste and old cathode generation 20000-24000 ton.As follows with reference to negative electrode composition: carbon content 42～69%, degree of graphitization is up to 70～88%; Electrolyte ingredient content is 58～31%.
(2) application mode
To the waste and old cathode of collecting adopt broken, mix after, carry out in small, broken bitsly, waste and old cathode is crushed to 10mm following (employing closed circuit crushing).
3 stripping ponds (this does not represent with A, B, C) are set, respectively in stripping, rinsing, discharging and reinforced state, alternately operating.Stripping treatment temperature 90-93 DEG C, washings are normal-temperature water.It is 30-40 that liquid-solid ratio is processed in stripping.
1) state 1:A stripping, B rinsing, C discharging are with reinforced.Waste and old cathode broken material stripping pond A carries out stripping processing, and stripping water is B pond washings, and regulating stripping concentration is 50%, and dissolution time is more than 2 hours.C pond is in discharging and reinforced state;
2) state 2:A rinsing, B discharging and reinforced, C stripping.A stripping finishes, and water is wherein emitted, and carries out defluorination processing or returns to villiaumite system; Then add defluorination middle water after treatment to carry out rinsing processing to it; Washings in the B of stripping pond are put into the C dissolving tank that adds virgin material.B dissolving tank completes discharging and recharge after rinsing, connects centrifugal dehydration, below water content to 5% after discharging.
3) state 3:A discharging and reinforced, B stripping, C rinsing.B pond enters dissolving operation, and dissolved water is the washings of dissolving tank A.C enters rinsing state, and washings are the water that returns after treatment.Then A discharging, carry out solid-liquid crude separation, add virgin material.
System enters a new samsara.
In order to make full use of the waste heat of stripping water, after stripping hot water after treatment and washings adopt pipe heat exchanger heat exchange, temperature adjustment enters stripping treatment pond again.
Treatment process as shown in Figure 1.The product index obtaining after processing is as shown in table 3 below.
Table 3 is processed the key technical indexes obtaining
(3) application result
Can realize the harmless treatment of waste and old cathode, be convenient to store and further processing and utilizing.Processing waste water has been realized and having been recycled.Cathode material part after treatment is as metallurgical carburant, and part is as fuel utilization.
Embodiment 3 produces the application of the industrial zone of the electrolytic aluminium of 1,000,000 tons per year
(1) basic condition
Aluminium industrial zone, 1,000,000 tons of year Aluminum Electrolysis Production abilities.Adopt 200～350kA large-scale pre-baked cell electrolysis tech and prebaked anode roasting technology.38000～46000 tons of year waste and old cathode generations.As follows with reference to negative electrode composition: carbon content 38～67%, degree of graphitization is up to 70～88%; Electrolyte components content is 62～33%.
(2) application mode
To the waste and old cathode of collecting adopt broken, mix after, carry out in small, broken bitsly, waste and old cathode is crushed to 10mm following (employing closed circuit crushing).
3 stripping ponds (this does not represent with A, B, C) are set, respectively in stripping, rinsing, discharging and reinforced state, alternately operating.Stripping treatment temperature 92-95 DEG C, washings are normal-temperature water.It is 20-35 that liquid-solid ratio is processed in stripping.
1) state 1:A stripping, B rinsing, C discharging are with reinforced.Waste and old cathode broken material stripping pond A carries out stripping processing, and stripping water is B pond washings, and regulating stripping concentration is 50%, and dissolution time is more than 1 hour.C pond is in discharging and reinforced state;
2) state 2:A rinsing, B discharging and reinforced, C stripping.A stripping finishes, and water is wherein emitted, and carries out defluorination processing or returns to villiaumite system; Then add defluorination middle water after treatment to carry out rinsing processing to it; Washings in the B of stripping pond are put into the C dissolving tank that adds virgin material.B dissolving tank completes discharging and recharge after rinsing, connects centrifugal dehydration, below water content to 5% after discharging.
3) state 3:A discharging and reinforced, B stripping, C rinsing.B pond enters dissolving operation, and dissolved water is the washings of dissolving tank A.C enters rinsing state, and washings are the water that returns after treatment.Then A discharging, carry out solid-liquid crude separation, add virgin material.
System enters a new samsara.
In order to make full use of the waste heat of stripping water, after stripping hot water after treatment and washings adopt pipe heat exchanger heat exchange, temperature adjustment enters stripping treatment pond again.
Treatment process as shown in Figure 1.Alternate treatment operation slot switching sequence relation is as shown in table 4.Consider that treating capacity is larger, dissolution time is 4 hours, and all the other activity times are constant.
Table 4 alternate treatment operation slot switching sequence relation
The product index obtaining after processing is as shown in table 5 below.
Table 5 is processed the key technical indexes obtaining
(3) application result
Can realize the harmless treatment of waste and old cathode, be convenient to store and further processing and utilizing.Processing waste water has been realized and having been recycled.After processing, carbonaceous material part is as metallurgic auxiliary materials, and part is for flotation processing, separation of carbon and electrolyte.
Claims (9)
1. waste and old cathode harmless treatment and a resource utilization method, is characterized in that, method comprises:
Fragmentation mixes processing: waste and old cathode is carried out to fragmentation and mix processing, obtain
waste and old cathode fragment;
Stripping processing: be soaked in water
waste and old cathode fragment;
Separation of Solid and Liquid: stripping is carried out Separation of Solid and Liquid after processing and obtained
ore body after stripping and stripping water.
2. waste and old cathode harmless treatment as claimed in claim 1 and resource utilization method, is characterized in that, the granularity of waste and old cathode fragment is 0～10mm.
3. waste and old cathode harmless treatment as claimed in claim 1 and resource utilization method, is characterized in that, the stripping processing time is not less than 2hr, and stripping treatment temperature is 80～95 DEG C, and it is 20～45 that liquid-solid ratio is processed in stripping.
4. waste and old cathode harmless treatment as claimed in claim 1 and resource utilization method, is characterized in that, described stripping water is as the raw material that reclaims fluoride.
5. waste and old cathode harmless treatment as claimed in claim 1 and resource utilization method, is characterized in that, the ore body after stripping is carried out to rinsing.
6. waste and old cathode harmless treatment as claimed in claim 5 and resource utilization method, is characterized in that, described stripping processing and rinsing are carried out in 3 stripping ponds, and 3 stripping ponds are respectively in stripping, rinsing, discharging and reinforced state.
7. waste and old cathode harmless treatment and the resource utilization method as described in claim 5 or 6, is characterized in that, the water that rinsing produces is for stripping processing.
8. waste and old cathode harmless treatment as claimed in claim 7 and resource utilization method, is characterized in that, stripping water is carried out to defluorination processing, and defluorination liquid after treatment is for rinsing.
9. waste and old cathode harmless treatment as claimed in claim 8 and resource utilization method, is characterized in that, the water that stripping water and rinsing produce carries out heat exchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377437.7A CN104162536A (en) | 2014-08-01 | 2014-08-01 | Harmless treatment and resource utilization method of waste cathode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377437.7A CN104162536A (en) | 2014-08-01 | 2014-08-01 | Harmless treatment and resource utilization method of waste cathode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104162536A true CN104162536A (en) | 2014-11-26 |
Family
ID=51906630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410377437.7A Pending CN104162536A (en) | 2014-08-01 | 2014-08-01 | Harmless treatment and resource utilization method of waste cathode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104162536A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645405A (en) * | 2016-04-12 | 2016-06-08 | 郑州鸿跃环保科技有限公司 | System and method for recovering graphite from aluminum electrolysis cell cathode carbon block |
| CN106166560A (en) * | 2016-06-28 | 2016-11-30 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | A kind of processing method of waste cathode carbon block |
| CN107313073A (en) * | 2017-06-28 | 2017-11-03 | 云南云铝润鑫铝业有限公司 | A kind of aluminum cell waste cathode liner dump leaching processing method |
| CN107313074A (en) * | 2017-06-28 | 2017-11-03 | 云南云铝润鑫铝业有限公司 | A kind of aluminum cell waste cathode carbon materials dump leaching processing method |
| CN107313075A (en) * | 2017-06-28 | 2017-11-03 | 云南云铝润鑫铝业有限公司 | A kind of aluminum cell waste furnace fireproofing material dump leaching processing method |
| CN107326397A (en) * | 2017-06-28 | 2017-11-07 | 云南云铝润鑫铝业有限公司 | CO in aluminium electrolytic flue2Resource comprehensive utilization Application way |
| CN107892312A (en) * | 2017-10-20 | 2018-04-10 | 西安建筑科技大学 | A kind of aluminum cell waste cathode dissolution processing and fluoride recovery method |
| CN110548485A (en) * | 2019-09-05 | 2019-12-10 | 中南大学 | Modified waste cathode carbon material and preparation and application methods thereof |
| CN112108490A (en) * | 2020-08-31 | 2020-12-22 | 西安建筑科技大学 | Treatment device for dangerous solid waste with overproof soluble fluorine and cyanide ions and operation method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1358581A (en) * | 2001-11-20 | 2002-07-17 | 舒大平 | Harmless treatment and comprehensive utilization method for aluminium electrolytic carbon slag and waste cathode material |
| WO2004053174A1 (en) * | 2002-12-05 | 2004-06-24 | Tri E Holding, Llc | Method and system for extracting metal from glass waste |
| CN101154757A (en) * | 2006-09-29 | 2008-04-02 | 比亚迪股份有限公司 | Process for recovering carbon materials of battery cathode |
| CN101386017A (en) * | 2008-10-17 | 2009-03-18 | 东北大学 | Method for treating aluminum electrolysis waste cathode carbon block using acid and alkali combination method |
| CN101480658A (en) * | 2008-12-26 | 2009-07-15 | 东北大学 | Method for electrolyzing waste and old cathode carbon block by comprehensive utilization of aluminum |
| CN101673829A (en) * | 2009-09-25 | 2010-03-17 | 华南师范大学 | Recovery processing method of waste zinc-manganese battery |
| CN101713028A (en) * | 2009-11-24 | 2010-05-26 | 江西稀有金属钨业控股集团有限公司 | Method for washing anode slime of electrolytic lead bismuth alloy |
| CN101829670A (en) * | 2010-04-02 | 2010-09-15 | 北京矿冶研究总院 | Method for recovering carbon from electrolytic aluminum waste cathode carbon block |
| JP2012092406A (en) * | 2010-10-28 | 2012-05-17 | Jfe Engineering Corp | Method for recovering lead from lead-containing glass |
-
2014
- 2014-08-01 CN CN201410377437.7A patent/CN104162536A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1358581A (en) * | 2001-11-20 | 2002-07-17 | 舒大平 | Harmless treatment and comprehensive utilization method for aluminium electrolytic carbon slag and waste cathode material |
| WO2004053174A1 (en) * | 2002-12-05 | 2004-06-24 | Tri E Holding, Llc | Method and system for extracting metal from glass waste |
| CN101154757A (en) * | 2006-09-29 | 2008-04-02 | 比亚迪股份有限公司 | Process for recovering carbon materials of battery cathode |
| CN101386017A (en) * | 2008-10-17 | 2009-03-18 | 东北大学 | Method for treating aluminum electrolysis waste cathode carbon block using acid and alkali combination method |
| CN101480658A (en) * | 2008-12-26 | 2009-07-15 | 东北大学 | Method for electrolyzing waste and old cathode carbon block by comprehensive utilization of aluminum |
| CN101673829A (en) * | 2009-09-25 | 2010-03-17 | 华南师范大学 | Recovery processing method of waste zinc-manganese battery |
| CN101713028A (en) * | 2009-11-24 | 2010-05-26 | 江西稀有金属钨业控股集团有限公司 | Method for washing anode slime of electrolytic lead bismuth alloy |
| CN101829670A (en) * | 2010-04-02 | 2010-09-15 | 北京矿冶研究总院 | Method for recovering carbon from electrolytic aluminum waste cathode carbon block |
| JP2012092406A (en) * | 2010-10-28 | 2012-05-17 | Jfe Engineering Corp | Method for recovering lead from lead-containing glass |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645405A (en) * | 2016-04-12 | 2016-06-08 | 郑州鸿跃环保科技有限公司 | System and method for recovering graphite from aluminum electrolysis cell cathode carbon block |
| CN106166560A (en) * | 2016-06-28 | 2016-11-30 | 大唐国际发电股份有限公司高铝煤炭资源开发利用研发中心 | A kind of processing method of waste cathode carbon block |
| CN107313073A (en) * | 2017-06-28 | 2017-11-03 | 云南云铝润鑫铝业有限公司 | A kind of aluminum cell waste cathode liner dump leaching processing method |
| CN107313074A (en) * | 2017-06-28 | 2017-11-03 | 云南云铝润鑫铝业有限公司 | A kind of aluminum cell waste cathode carbon materials dump leaching processing method |
| CN107313075A (en) * | 2017-06-28 | 2017-11-03 | 云南云铝润鑫铝业有限公司 | A kind of aluminum cell waste furnace fireproofing material dump leaching processing method |
| CN107326397A (en) * | 2017-06-28 | 2017-11-07 | 云南云铝润鑫铝业有限公司 | CO in aluminium electrolytic flue2Resource comprehensive utilization Application way |
| CN107892312A (en) * | 2017-10-20 | 2018-04-10 | 西安建筑科技大学 | A kind of aluminum cell waste cathode dissolution processing and fluoride recovery method |
| CN110548485A (en) * | 2019-09-05 | 2019-12-10 | 中南大学 | Modified waste cathode carbon material and preparation and application methods thereof |
| CN112108490A (en) * | 2020-08-31 | 2020-12-22 | 西安建筑科技大学 | Treatment device for dangerous solid waste with overproof soluble fluorine and cyanide ions and operation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104162536A (en) | Harmless treatment and resource utilization method of waste cathode | |
| CN101811695B (en) | Method for recovering graphite from electrolytic aluminum waste cathode carbon block | |
| CN102978659B (en) | A kind of Deep method of comprehensive utilization of electrolytic cell overhaul slag | |
| CN106077040B (en) | A kind of method of ultrasonic wave auxiliary alkali leaching process aluminum electrolytic waste and old cathode carbon block | |
| CN102161049B (en) | Comprehensive utilization method of waste and old cathode carbon blocks of aluminium electrolytic bath | |
| CN103343363B (en) | The electrolytical production method of a kind of electrolgtic aluminium | |
| CN102146570A (en) | Method for producing aluminum anode by using waste cathode carbon block of aluminum cell | |
| CN104438280A (en) | Method for sorting waste aluminum electrolytic cathodes | |
| CN107902649A (en) | A kind of ultrasonic wave alkali leaching and the method for micro-wave digestion Combined Treatment electrolytic aluminium waste cathode carbon block | |
| CN204529994U (en) | The treatment unit of waste cathode carbon block in electrolysis of aluminum waste tank lining | |
| CN108424037A (en) | Charcoal and graphite product production raw material and preparation method are made using the aluminium electroloysis cathode that gives up | |
| CN106040438A (en) | Floatation method for recycling carbon and electrolyte from waste cathode carbon block of aluminum electrolysis cell | |
| CN107604383A (en) | A kind of method of electrolyte in smelting process extraction carbon slag | |
| CN109904546A (en) | The technique of aluminium foil and positive electrode is recycled from applying waste lithium ionic power battery | |
| CN104499000A (en) | Beneficiation treatment method for electrolytic aluminium carbon residues | |
| CN105970250A (en) | Harmless comprehensive utilization method for electrolytic aluminum solid waste | |
| CN206069804U (en) | With the anthracitic system of electrolytic aluminium waste cathode carbon block production high graphite | |
| CN102992298B (en) | A kind of recoverying and utilizing method of electrolytic cell overhaul slag waste cathode carbon block | |
| CN105586607A (en) | Using method of spent cathodes | |
| CN103000968A (en) | Lead plaster desulfurization transforming method for waste lead-acid storage batteries | |
| Wang et al. | Study on harmless and resources recovery treatment technology of waste cathode carbon blocks from electrolytic aluminum | |
| CN204685646U (en) | The treating apparatus of aluminium electroloysis waste lining | |
| CN108011147B (en) | Waste lead-acid storage battery treatment system, treatment process and application of secondary lead | |
| CN107892312A (en) | A kind of aluminum cell waste cathode dissolution processing and fluoride recovery method | |
| CN105926007B (en) | The water logging method for floating of charcoal and electrolyte is reclaimed in a kind of cathode carbon pieces from aluminum cell waste |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141126 |
|
| RJ01 | Rejection of invention patent application after publication |