CN104141153B - A kind of processing method of electrolytic cell carbon slag - Google Patents
A kind of processing method of electrolytic cell carbon slag Download PDFInfo
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- CN104141153B CN104141153B CN201310355679.1A CN201310355679A CN104141153B CN 104141153 B CN104141153 B CN 104141153B CN 201310355679 A CN201310355679 A CN 201310355679A CN 104141153 B CN104141153 B CN 104141153B
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Abstract
The invention discloses a kind of processing method of electrolytic cell carbon slag, the method is in the time carrying out electrolytic cell change poles receipts limit, and pending carbon slag is layed in the superfine particle of envelope. The processing method of electrolytic cell carbon slag of the present invention, in the time that electrolytic cell change poles is received limit, along with conventional envelope utmost point program, pending carbon slag is layed in the superfine particle of envelope, the spontaneous combustion of carbon slag produces gas discharging, electrolyte condensation in carbon slag also enters electrolytic cell, reclaims to greatest extent the electrolyte in carbon slag; Do not affect the normal operation of electrolytic cell, reduced the operation that carbon slag muck is put, transported and processes, greatly reduce labour intensity, economize labor time, improved production efficiency, and eliminated the pollution of these operations to environment; Technique is simple, easy to operate, has both realized electrolytical recycling in carbon slag, without dropping into any cost and equipment, is applicable to heavy industrialization application again.
Description
Technical field
The invention belongs to aluminum electrolysis technology field, be specifically related to a kind of processing method of electrolytic cell carbon slag.
Background technology
In electrolytic cell production run process, anode block is the electric conductor of electrolytic cell, along with electrolysis production is constantly carried out, and sunUtmost point carbon piece produces periodically and consumes, and under the height-limited prerequisite of anode block, needs circulative replacing. Due to anode block matterIn amount and raw material proportioning, there are certain quality problems, in the process constantly consuming at anode block, selective oxidation occurs anti-Should, some carbon granules on anode block skeleton come off to fall into and in electrolytic cell, form carbon slag. Due to be subject to electrolytical immersion andInfiltration, has been full of electrolyte in the pore of carbon slag.
The generation of carbon slag in electrolytic cell, brings larger negative effect not only to electrolysis production technical conditions, and increasesElectrolytical loss waste, contaminated environment. At present, conventional carbon slag processing method is that acid hydrolyzation or floatation are extracted carbon slagIn fluoride salt. Acid hydrolyzation is first with inorganic acid, the fluoride salt in carbon slag to be changed into HF volatilization, then absorbs with alkaline solutionHF; Floatation is first by thin carbon sizing, adds flotation device, makes carbon dust float over solution surface, pull out after carbon dust, then from solutionMiddle extraction fluoride salt. Although above-mentioned two kinds of methods can reclaim the fluoride salt in carbon slag, also have complex process, investmentCost is high, and the waste liquid of generation is difficult, and the problem that environmental pollution is more serious is unfavorable for that large-scale industrialization is produced and application.
Summary of the invention
The processing method that the object of this invention is to provide a kind of electrolytic cell carbon slag, technique is simple, easy to operate, without cost andEquipment investment, realizes electrolytical recycling in carbon slag.
In order to realize above object, the technical solution adopted in the present invention is: a kind of processing method of electrolytic cell carbon slag, enteringWhen row electrolytic cell change poles is received limit, pending carbon slag is layed in the superfine particle of envelope.
The superfine particle of described envelope is aluminium oxide and electrolytical little block mixture.
Pending carbon slag is layed in to the superfine particle of envelope at the middle and upper levels.
Comprise the following steps:
1) electrolytic cell is installed after new anode block, first covers one deck and seals superfine particle, and thickness is 8～12cm, forms firstEnvelope utmost point layer;
2) pending carbon slag is laid on the first envelope utmost point layer to the layer of carbon that formation thickness is 5～8cm;
3) on layer of carbon, cover one deck again and seal the smooth sealing of superfine particle, thickness is 5～10cm, forms the second envelope utmost point layer;
4) layer of carbon is along with the consumption of electrolytic cell Anodic carbon piece moves down gradually, and temperature raises gradually, and the spontaneous combustion of carbon slag produces gasBody discharge, the electrolyte condensation in carbon slag also enters electrolytic cell.
The particle diameter of described carbon slag is not more than 2cm.
The processing method of electrolytic cell carbon slag of the present invention, by pending carbon slag be layed in envelope superfine particle in, layer of carbon along withThe consumption of electrolytic cell Anodic carbon piece moves down gradually, and carbon when temperature reaches 600 DEG C in carbon slag starts spontaneous combustion, produces CO2With CO gas discharging, the electrolyte condensation in carbon slag also enters electrolytic cell, reclaims to greatest extent the electrolyte in carbon slag, reachesThe object of utilizing to carbon spontaneous combustion removal in carbon slag, electrolyte circulation.
The processing method of electrolytic cell carbon slag of the present invention, is in the time that electrolytic cell change poles is received limit, along with conventional envelope utmost point program, and willPending carbon slag is layed in the superfine particle of envelope, reclaims to greatest extent the electrolyte in carbon slag, and technique is simple simultaneously, operationConvenient, both realized electrolytical recycling in carbon slag, without dropping into any cost and equipment, be applicable to extensive work againIndustryization application; Use method of the present invention, carbon slag is to remove by spontaneous combustion, and exceeds the heat that consumes electrolytic cell, andIn electrolytic cell, electrolytic liquid surface carbon slag content there is no obvious increase, illustrates that method of the present invention does not affect the normal of electrolytic cellOperation; Use method of the present invention, the carbon slag of pulling out can be directly used in to the envelope utmost point from electrolytic cell, reduced carbon slag muck put,Transport and the operation of processing, greatly reduce labour intensity, economizes labor time, and improved production efficiency, and eliminateThe pollutions of these operations to environment.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further illustrated.
Embodiment 1
The processing method of the electrolytic cell carbon slag of the present embodiment, comprises the following steps:
1) electrolytic cell is installed after new anode block, first covers one deck and seals superfine particle, and thickness is 10cm, forms the first envelopeUtmost point layer; The superfine particle of described envelope is aluminium oxide and electrolytical little block mixture;
2) pending carbon slag is laid on the first envelope utmost point layer to the layer of carbon that formation thickness is 5cm;
3) on layer of carbon, cover one deck again and seal the smooth sealing of superfine particle, thickness is 5cm, forms the second envelope utmost point layer;
4) layer of carbon is along with the consumption of electrolytic cell Anodic carbon piece moves down gradually, and temperature raises gradually, and the spontaneous combustion of carbon slag produces gasBody discharge, the electrolyte condensation in carbon slag also enters electrolytic cell.
Embodiment 2
The processing method of the electrolytic cell carbon slag of the present embodiment, comprises the following steps:
1) electrolytic cell is installed after new anode block, first covers one deck and seals superfine particle, and thickness is 8cm, forms the first envelope utmost pointLayer; The superfine particle of described envelope is aluminium oxide and electrolytical little block mixture;
2) pending carbon slag is laid on the first envelope utmost point layer to the layer of carbon that formation thickness is 8cm;
3) on layer of carbon, cover one deck again and seal the smooth sealing of superfine particle, thickness is 10cm, forms the second envelope utmost point layer;
4) layer of carbon is along with the consumption of electrolytic cell Anodic carbon piece moves down gradually, and temperature raises gradually, and the spontaneous combustion of carbon slag produces gasBody discharge, the electrolyte condensation in carbon slag also enters electrolytic cell.
Embodiment 3
The processing method of the electrolytic cell carbon slag of the present embodiment, comprises the following steps:
1) electrolytic cell is installed after new anode block, first covers one deck and seals superfine particle, and thickness is 12cm, forms the first envelopeUtmost point layer; The superfine particle of described envelope is aluminium oxide and electrolytical little block mixture;
2) pending carbon slag is laid on the first envelope utmost point layer to the layer of carbon that formation thickness is 6cm;
3) on layer of carbon, cover one deck again and seal the smooth sealing of superfine particle, thickness is 8cm, forms the second envelope utmost point layer;
4) layer of carbon is along with the consumption of electrolytic cell Anodic carbon piece moves down gradually, and temperature raises gradually, and the spontaneous combustion of carbon slag produces gasBody discharge, the electrolyte condensation in carbon slag also enters electrolytic cell.
Claims (4)
1. a processing method for electrolytic cell carbon slag, is characterized in that: in the time carrying out electrolytic cell change poles receipts limit, by pendingCarbon slag be layed in envelope superfine particle in.
2. the processing method of electrolytic cell carbon slag according to claim 1, is characterized in that: by pending carbon slag pavingBe located at the superfine particle of envelope at the middle and upper levels.
3. the processing method of electrolytic cell carbon slag according to claim 2, is characterized in that: comprise the following steps:
1) electrolytic cell is installed after new anode block, first covers one deck and seals superfine particle, and thickness is 8～12cm, forms firstEnvelope utmost point layer;
2) pending carbon slag is laid on the first envelope utmost point layer to the layer of carbon that formation thickness is 5～8cm;
3) on layer of carbon, cover one deck again and seal the smooth sealing of superfine particle, thickness is 5～10cm, forms the second envelope utmost point layer;
4) layer of carbon is along with the consumption of electrolytic cell Anodic carbon piece moves down gradually, and temperature raises gradually, and the spontaneous combustion of carbon slag produces gasBody discharge, the electrolyte condensation in carbon slag also enters electrolytic cell.
4. according to the processing method of the electrolytic cell carbon slag described in claim 1,2 or 3, it is characterized in that: described carbon slagParticle diameter is not more than 2cm.
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| CN201310355679.1A CN104141153B (en) | 2013-08-15 | 2013-08-15 | A kind of processing method of electrolytic cell carbon slag |
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| CN201310355679.1A CN104141153B (en) | 2013-08-15 | 2013-08-15 | A kind of processing method of electrolytic cell carbon slag |
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| CN104141153B true CN104141153B (en) | 2016-05-04 |
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| CN113957487B (en) * | 2021-11-11 | 2022-05-06 | 河南娄科本环境科技有限公司 | Method for recovering electrolyte in carbon residue by using heat of electrolytic cell |
| CN114381763A (en) * | 2022-01-24 | 2022-04-22 | 甘肃东兴铝业有限公司 | Reduction treatment method for anode carbon slag generated by aluminum electrolytic cell |
Citations (6)
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|---|---|---|---|---|
| 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 |
| CN101063215A (en) * | 2007-05-31 | 2007-10-31 | 中国铝业股份有限公司 | Method for extracting electrolyte in aluminum electrolytic anodic carbon residue |
| CN101255566A (en) * | 2007-12-17 | 2008-09-03 | 中国铝业股份有限公司 | Method for reclaiming electrolyte in carbon dross of aluminium electrolysis |
| CN102978659A (en) * | 2012-12-04 | 2013-03-20 | 贵州铝城铝业原材料研究发展有限公司 | Deep comprehensive resource utilization method for electrolytic cell overhaul slag |
| CN102989743A (en) * | 2012-12-04 | 2013-03-27 | 贵州铝城铝业原材料研究发展有限公司 | Method for recycling slag slurry of overhauling groove slag of electrolytic cell |
| CN103088365A (en) * | 2013-02-01 | 2013-05-08 | 贵阳冶金机电工艺有限公司 | Clean production process of electrolytic aluminum |
-
2013
- 2013-08-15 CN CN201310355679.1A patent/CN104141153B/en not_active Expired - Fee Related
Patent Citations (6)
| 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 |
| CN101063215A (en) * | 2007-05-31 | 2007-10-31 | 中国铝业股份有限公司 | Method for extracting electrolyte in aluminum electrolytic anodic carbon residue |
| CN101255566A (en) * | 2007-12-17 | 2008-09-03 | 中国铝业股份有限公司 | Method for reclaiming electrolyte in carbon dross of aluminium electrolysis |
| CN102978659A (en) * | 2012-12-04 | 2013-03-20 | 贵州铝城铝业原材料研究发展有限公司 | Deep comprehensive resource utilization method for electrolytic cell overhaul slag |
| CN102989743A (en) * | 2012-12-04 | 2013-03-27 | 贵州铝城铝业原材料研究发展有限公司 | Method for recycling slag slurry of overhauling groove slag of electrolytic cell |
| CN103088365A (en) * | 2013-02-01 | 2013-05-08 | 贵阳冶金机电工艺有限公司 | Clean production process of electrolytic aluminum |
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