CN109161930A - A kind of separating technology of aluminium electrolyzing carbon slag and electrolyte - Google Patents
A kind of separating technology of aluminium electrolyzing carbon slag and electrolyte Download PDFInfo
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- CN109161930A CN109161930A CN201811361330.8A CN201811361330A CN109161930A CN 109161930 A CN109161930 A CN 109161930A CN 201811361330 A CN201811361330 A CN 201811361330A CN 109161930 A CN109161930 A CN 109161930A
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- electrolyte
- carbon
- feeding
- feeding groove
- carbon slag
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/18—Electrolytes
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- Chemical Kinetics & Catalysis (AREA)
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- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to the separating technology of a kind of aluminium electrolyzing carbon slag and electrolyte, processing step is as follows: 1) primary breakup and feeding；2) it screens；3) second level Hubei Province is broken；4) it is separated after being crushed；5) carbon slag is ground；6) flotation；7) magnetic separation；8) dry.The beneficial effects of the present invention are: this technique is suitble to large-scale production, good separating effect, high production efficiency；Process flow is complete, does not generate the pollutant of waste water, exhaust gas in entire production process, and fluorine content is lower than national outlet standard in treated carbon dust, directly as fuel or can produce the raw material of anode block and uses, and not generate any secondary pollution.
Description
Technical field
The present invention relates to the manufacturing of electrolytic aluminium, the separation work of specifically a kind of aluminium electrolyzing carbon slag and electrolyte
Skill.
Background technique
During Aluminum Electrolysis Production, since anode carbon body by electrolyte erosion and is scrubbed, off quality etc. for a long time
Various reasons form carbon slag in electrolytic cell.1 ton of aluminium of every production and casting, about generation 5-20Kg carbon slag.Carbon slag it is main at
Dividing is carbon dust and electrolyte, has certain recovery value.Currently, patent CN201710131447 proposes a kind of separation and recovery
The method of carbon slag and electrolyte in electrolytic aluminium waste anode slag, but when it is applied in scale industrial production, process is not
It is enough complete, and since the granularity designed when mill carbon slag is improper, production efficiency be not it is very ideal, also have sizable
Promote room for improvement.
Summary of the invention
The purpose of the present invention is to propose to the separating technologies of a kind of aluminium electrolyzing carbon slag and electrolyte, are suitable for scale chemical industry
Industry production, high production efficiency.
The invention adopts the following technical scheme: the separating technology of a kind of aluminium electrolyzing carbon slag and electrolyte, technique step
It is rapid as follows:
1) carbon slag material is tentatively carried out after being crushed with forklift, is packed into feed hopper by primary breakup and feeding；
2) it screens, the first oscillating feeder is arranged in feed hopper lower part, according to the broken processing capacity dosing of second level jaw to first
Belt conveyor, magneto iron remover is arranged in the first belt conveyor top, for removing the iron wire contained in raw material, iron block etc.
Iron compound；
3) second level Hubei Province is broken, and feedstock transportation to material buffer warehouse, material buffer warehouse lower part are configured with second by the first belt conveyor
Oscillating feeder carries out dosing according to the production capacity that second level jaw is broken, and second level jaw is broken to crush material to 25mm or less；
4) it is separated after being crushed, second level jaw breaks lower part and threeway drainage conduit is arranged, and Pneumatic gate valve is equipped in drainage conduit, when broken carbon
When slag, Pneumatic gate valve is opened, and is separated by compressed air to broken carbon slag, and granularity is less than or equal to the carbon slag object of 25mm
Material mentions by third belt conveyor and the first bucket and is delivered to carbon slag storage bin, and carbon slag material of the granularity greater than 25 ㎜ is through the second skin
Band conveyer returns to material buffer warehouse；
5) carbon slag is ground, adds water using weighing belt timing feeding, and at ball mill feeding inlet, makes pulp density 40%- after mill
50%, adjustment grinding machine matches ball ratio and total ball load, and making the mine abrasive material of size distribution 0.15mm is 70%-80%；
6) flotation, processing step are as follows:
A, flotation in ore pulp to roughing flotation column after grinding is turned by roughing feeding pump, the material of overflow, which enters, scans feeding groove
Interior, underflow materials enter in the first selected feeding groove；
B, scan the material of feeding groove and beaten by scanning feeding pump to scanning in flotation column, the material of overflow from flow into carbon dust at
In product slot, underflow materials are entered in roughing feeding groove, material filtering means dehydration after foam settles in carbon dust pan tank, then by
Carbon dust discharge pump is beaten to carbon dust subsider；
C, the material of the first selected feeding groove is beaten by the first selected feeding pump to the first selected flotation column, the material gravity flow of overflow
Into in roughing feeding groove, underflow materials are entered in the second selected feeding groove；
D, the material in the second selected feeding groove is beaten by the second selected feeding pump to the second selected flotation column, and the material of overflow is certainly
Stream enters in the first selected feeding groove, and underflow materials enter in electrolyte pan tank, are beaten by electrolyte discharge pump to electrolyte
In subsider；
7) magnetic separation removes the iron tramp in electrolyte finished product.
8) dry, after electrolyte filters out moisture, dried by using electric heating drying machine.
The principle of this technique is: the most suitable flotation granularity of carbon slag is 0.4~0.07mm, and the granularity of 0.15mm accounts for total mill
Ore particle degree 75%~85% when, the electrolyte quality of flotation is best, and productivity is also relatively high.Grinding particle size is big, carbon and electrolyte
Cannot monomer separation well, grinding particle size is small, and the effect of flotation is undesirable, and the content of electrolyte will increase in carbon slurry, electrolysis
The rate of recovery of matter reduces.So carbon slag has to before flotation by ore grinding, and control the ore grinding material of 0.15mm granularity
Within 75%~85%.
The beneficial effects of the present invention are: this technique is suitble to large-scale production, good separating effect, high production efficiency；Technique stream
Journey is complete, does not generate the pollutant of waste water, exhaust gas in entire production process, and fluorine content is lower than national outlet in treated carbon dust
Standard can use directly as the raw material of fuel or production anode block, and not generate any secondary pollution.
Detailed description of the invention
Fig. 1 is process flow chart of the invention.
Specific embodiment
The present invention is described in further detail combined with specific embodiments below.
Embodiment 1
About three tons of anodic carbon residue, separating technology is as follows:
1) carbon slag material is tentatively carried out after being crushed with forklift, is packed into feed hopper by primary breakup and feeding；
2) it screens, the first oscillating feeder is arranged in feed hopper lower part, according to the broken processing capacity dosing of second level jaw to first
Belt conveyor, magneto iron remover is arranged in the first belt conveyor top, for removing the iron wire contained in raw material, iron block etc.
Iron compound；
3) second level Hubei Province is broken, and feedstock transportation to material buffer warehouse, material buffer warehouse lower part are configured with second by the first belt conveyor
Oscillating feeder carries out dosing according to the production capacity that second level jaw is broken, and second level jaw is broken to crush material to 25mm or less；
4) it is separated after being crushed, second level jaw breaks lower part and threeway drainage conduit is arranged, and Pneumatic gate valve is equipped in drainage conduit, when broken carbon
When slag, Pneumatic gate valve is opened, and is separated by compressed air to broken carbon slag, and granularity is less than or equal to the carbon slag object of 25mm
Material mentions by third belt conveyor and the first bucket and is delivered to carbon slag storage bin, and carbon slag material of the granularity greater than 25 ㎜ is through the second skin
Band conveyer returns to material buffer warehouse；
5) carbon slag is ground, adds water using weighing belt timing feeding, and at ball mill feeding inlet, makes pulp density 50% after mill,
It adjusts grinding machine and matches ball ratio and total ball load, making the mine abrasive material of size distribution 0.15mm is 80%；
6) flotation, processing step are as follows:
A, flotation in ore pulp to roughing flotation column after grinding is turned by roughing feeding pump, the material of overflow, which enters, scans feeding groove
Interior, underflow materials enter in the first selected feeding groove；
B, scan the material of feeding groove and beaten by scanning feeding pump to scanning in flotation column, the material of overflow from flow into carbon dust at
In product slot, underflow materials are entered in roughing feeding groove, material filtering means dehydration after foam settles in carbon dust pan tank, then by
Carbon dust discharge pump is beaten to carbon dust subsider；
C, the material of the first selected feeding groove is beaten by the first selected feeding pump to the first selected flotation column, the material gravity flow of overflow
Into in roughing feeding groove, underflow materials are entered in the second selected feeding groove；
D, the material in the second selected feeding groove is beaten by the second selected feeding pump to the second selected flotation column, and the material of overflow is certainly
Stream enters in the first selected feeding groove, and underflow materials enter in electrolyte pan tank, are beaten by electrolyte discharge pump to electrolyte
In subsider；
7) magnetic separation removes the iron tramp in electrolyte finished product.
8) dry, after electrolyte filters out moisture, dried by using electric heating drying machine.
After above-mentioned process, all technical obtained is as shown in Table 1:
Table one:
Embodiment 2
About three tons of anodic carbon residue, separating technology unlike the first embodiment:
5) carbon slag is ground, adds water using weighing belt timing feeding, and at ball mill feeding inlet, makes pulp density 40% after mill,
It adjusts grinding machine and matches ball ratio and total ball load, making the mine abrasive material of size distribution 0.15mm is 70%；
It is as shown in Table 2 according to this technique all technical obtained:
Table two:
Embodiment 3
About three tons of anodic carbon residue, separating technology unlike the first embodiment:
6) carbon slag is ground, adds water using weighing belt timing feeding, and at ball mill feeding inlet, makes pulp density 45% after mill,
It adjusts grinding machine and matches ball ratio and total ball load, making the mine abrasive material of size distribution 0.15mm is 75%；
It is as shown in Table 3 according to this technique all technical obtained:
Table three:
As can be seen from the above embodiments, separating technology proposed by the invention has complete process, and the rate of recovery of electrolyte is high,
The quality of product is high, is suitble to large-scale production.
Part not in the detailed description of the invention is the prior art.
Claims (1)
1. the separating technology of a kind of aluminium electrolyzing carbon slag and electrolyte, it is characterized in that: comprising the following steps that:
1) carbon slag material is tentatively carried out after being crushed with forklift, is packed into feed hopper by primary breakup and feeding；
2) it screens, the first oscillating feeder is arranged in feed hopper lower part, according to the broken processing capacity dosing of second level jaw to first
Belt conveyor, magneto iron remover is arranged in the first belt conveyor top, for removing the iron wire contained in raw material, iron block etc.
Iron compound；
3) second level Hubei Province is broken, and feedstock transportation to material buffer warehouse, material buffer warehouse lower part are configured with second by the first belt conveyor
Oscillating feeder carries out dosing according to the production capacity that second level jaw is broken, and second level jaw is broken to crush material to 25mm or less；
4) it is separated after being crushed, second level jaw breaks lower part and threeway drainage conduit is arranged, and Pneumatic gate valve is equipped in drainage conduit, when broken carbon
When slag, Pneumatic gate valve is opened, and is separated by compressed air to broken carbon slag, and granularity is less than or equal to the carbon slag object of 25mm
Material mentions by third belt conveyor and the first bucket and is delivered to carbon slag storage bin, and carbon slag material of the granularity greater than 25 ㎜ is through the second skin
Band conveyer returns to material buffer warehouse；
5) carbon slag is ground, adds water using weighing belt timing feeding, and at ball mill feeding inlet, makes pulp density 40%- after mill
50%, adjustment grinding machine matches ball ratio and total ball load, and making the mine abrasive material of size distribution 0.15mm is 70%-80%；
6) flotation, processing step are as follows:
A, flotation in ore pulp to roughing flotation column after grinding is turned by roughing feeding pump, the material of overflow, which enters, scans feeding groove
Interior, underflow materials enter in the first selected feeding groove；
B, scan the material of feeding groove and beaten by scanning feeding pump to scanning in flotation column, the material of overflow from flow into carbon dust at
In product slot, underflow materials are entered in roughing feeding groove, material filtering means dehydration after foam settles in carbon dust pan tank, then by
Carbon dust discharge pump is beaten to carbon dust subsider；
C, the material of the first selected feeding groove is beaten by the first selected feeding pump to the first selected flotation column, the material gravity flow of overflow
Into in roughing feeding groove, underflow materials are entered in the second selected feeding groove；
D, the material in the second selected feeding groove is beaten by the second selected feeding pump to the second selected flotation column, and the material of overflow is certainly
Stream enters in the first selected feeding groove, and underflow materials enter in electrolyte pan tank, are beaten by electrolyte discharge pump to electrolyte
In subsider；
7) magnetic separation removes the iron tramp in electrolyte finished product；
8) dry, after electrolyte filters out moisture, dried by using electric heating drying machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811361330.8A CN109161930A (en) | 2018-11-15 | 2018-11-15 | A kind of separating technology of aluminium electrolyzing carbon slag and electrolyte |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811361330.8A CN109161930A (en) | 2018-11-15 | 2018-11-15 | A kind of separating technology of aluminium electrolyzing carbon slag and electrolyte |
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| CN109161930A true CN109161930A (en) | 2019-01-08 |
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| CN201811361330.8A Pending CN109161930A (en) | 2018-11-15 | 2018-11-15 | A kind of separating technology of aluminium electrolyzing carbon slag and electrolyte |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893515A (en) * | 2020-08-04 | 2020-11-06 | 郑州经纬科技实业有限公司 | Heat treatment method for aluminum electrolysis carbon slag |
| CN114618687A (en) * | 2022-04-25 | 2022-06-14 | 舒新前 | Method for recovering graphite from electrolytic aluminum slag by flotation |
Citations (4)
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|---|---|---|---|---|
| CN103726074A (en) * | 2014-01-25 | 2014-04-16 | 云南蓝天铝业环保科技有限公司 | Method for producing aluminum electrolyte by using aluminum electrolysis waste materials and recycling carbon |
| CN103949460A (en) * | 2014-04-17 | 2014-07-30 | 建水德福再生资源利用有限公司 | Device and method for producing regenerative electrolyte from aluminum-electrolysis carbon residues |
| CN105645449A (en) * | 2016-04-12 | 2016-06-08 | 郑州鸿跃环保科技有限公司 | System and method for recovering cryolite from aluminum electrolysis cell waste carbon slag |
| CN107626712A (en) * | 2017-08-29 | 2018-01-26 | 陕西三秦能源长宏铝业有限公司 | A kind of aluminium electroloysis danger solid waste integrated conduct method and recycling |
-
2018
- 2018-11-15 CN CN201811361330.8A patent/CN109161930A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103726074A (en) * | 2014-01-25 | 2014-04-16 | 云南蓝天铝业环保科技有限公司 | Method for producing aluminum electrolyte by using aluminum electrolysis waste materials and recycling carbon |
| CN103949460A (en) * | 2014-04-17 | 2014-07-30 | 建水德福再生资源利用有限公司 | Device and method for producing regenerative electrolyte from aluminum-electrolysis carbon residues |
| CN105645449A (en) * | 2016-04-12 | 2016-06-08 | 郑州鸿跃环保科技有限公司 | System and method for recovering cryolite from aluminum electrolysis cell waste carbon slag |
| CN107626712A (en) * | 2017-08-29 | 2018-01-26 | 陕西三秦能源长宏铝业有限公司 | A kind of aluminium electroloysis danger solid waste integrated conduct method and recycling |
Non-Patent Citations (1)
| Title |
|---|
| 张朝晖等: "《冶金资源综合利用》", 30 June 2011, 冶金工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111893515A (en) * | 2020-08-04 | 2020-11-06 | 郑州经纬科技实业有限公司 | Heat treatment method for aluminum electrolysis carbon slag |
| CN111893515B (en) * | 2020-08-04 | 2021-07-27 | 郑州经纬科技实业有限公司 | Heat treatment method for aluminum electrolysis carbon slag |
| CN114618687A (en) * | 2022-04-25 | 2022-06-14 | 舒新前 | Method for recovering graphite from electrolytic aluminum slag by flotation |
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Application publication date: 20190108 |