CN108558223A - Aluminium electroloysis waste lining prepares the method and system of rock wool - Google Patents
Aluminium electroloysis waste lining prepares the method and system of rock wool Download PDFInfo
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- CN108558223A CN108558223A CN201810577828.1A CN201810577828A CN108558223A CN 108558223 A CN108558223 A CN 108558223A CN 201810577828 A CN201810577828 A CN 201810577828A CN 108558223 A CN108558223 A CN 108558223A
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- rock wool
- waste lining
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- mass parts
- aluminium electroloysis
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- 239000011490 mineral wool Substances 0.000 title claims abstract description 82
- 239000002699 waste material Substances 0.000 title claims abstract description 76
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 45
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000004411 aluminium Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000003723 Smelting Methods 0.000 claims abstract description 51
- 239000002893 slag Substances 0.000 claims abstract description 50
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 150000004673 fluoride salts Chemical class 0.000 claims abstract description 23
- 239000010881 fly ash Substances 0.000 claims abstract description 21
- 238000011084 recovery Methods 0.000 claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 239000000654 additive Substances 0.000 claims abstract description 15
- 230000000996 additive effect Effects 0.000 claims abstract description 15
- 238000004064 recycling Methods 0.000 claims abstract description 12
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000011737 fluorine Substances 0.000 claims abstract description 10
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 10
- 239000003245 coal Substances 0.000 claims abstract description 7
- 238000001354 calcination Methods 0.000 claims abstract description 6
- 229910001634 calcium fluoride Inorganic materials 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 8
- 239000003546 flue gas Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 239000012620 biological material Substances 0.000 claims description 5
- 239000000571 coke Substances 0.000 claims description 5
- 239000000779 smoke Substances 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005242 forging Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000005868 electrolysis reaction Methods 0.000 abstract description 10
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 5
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 239000002920 hazardous waste Substances 0.000 description 4
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002221 fluorine Chemical class 0.000 description 1
- 229910001506 inorganic fluoride Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/06—Mineral fibres, e.g. slag wool, mineral wool, rock wool
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B9/00—General methods of preparing halides
- C01B9/08—Fluorides
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/002—Use of waste materials, e.g. slags
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Electrolytic Production Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses the method and system that aluminium electroloysis waste lining prepares rock wool, it belongs to technical field of aluminum electrolysis.Waste lining, the additive of fluorine removal and useless cathode are sent into high-temperature smelting pot, it carries out being heated to 1,700 2000 DEG C by the useless cathode of burning, after being heated at high temperature 15 25 minutes, obtain molten state slag charge and fluoride salt, fluoride salt enters flue through the recycling of off-gas recovery controlling device, molten state slag charge is sent into cooling crusher after carrying out cooling be crushed and obtains cured CaF2With waste lining slag, by waste lining slag with forge rear gangue and flyash mix after be sent into rock wool and prepare in smelting furnace, be heated to 1,700 2000 DEG C, be heated at high temperature 15 25 minutes, rock wool is sent to after being cooled to room temperature prepares production line and be manufactured into rock wool.It realizes innoxious, the recycling of waste lining, and waste lining is adequately utilized, and is prepared into rock wool after adding calcining coal gangue and flyash, and efficiently utilize the calorific value of useless cathode, while recycling fluoride salt for Aluminum Electrolysis Production.
Description
Technical field
The present invention relates to the method and system that a kind of aluminium electroloysis waste lining prepares rock wool, it belongs to technical field of aluminum electrolysis.
Background technology
Electrolytic aluminium waste slot liner is inevitable solid waste during Aluminum Electrolysis Production, and ton aluminium discharge capacity is 7.5-
15kg, waste lining the inside content of fluoride is usually in 30-40%, and cyanide content is usually in 100ppm.According to《Hazardous waste reflects
Other standard -- leaching characteristic identification》GB5085.3, content of fluoride ion about 1000-5000mg/L in waste lining, the content of cyanide
10-30mg/L is severely exceeded（The limit value in relation to inorganic fluoride is 100mg/L, cyanide in standard（CN-）Limit value
5mg/L）, belong to hazardous waste（It presses《National Hazard waste register》, hazardous waste code 331-023-48）, direct emission can make
At the serious pollution of environment.31,870,000 tons or so of electrolytic aluminium yield in 2016, continuous 16 years electrolytic aluminium yield be in the world
First, about the 50% of China's non-ferrous metal total output.7.5~15kg waste cathode carbon blocks are generated according to primary aluminum per ton to calculate, 2016
Generate about 22.5~450,000 tons of waste linings, the 1.5-3% of about national hazardous waste discharge capacity year.Currently, the master disposed both at home and abroad
Wanting mode to be stockpiling or landfill, most of enterprise does not have harmlessness disposing facility.With the implementation of new environmental law, electrolytic aluminium waste slot
The harmlessness disposing of lining becomes the technical issues of those skilled in the art are badly in need of solving.
For many years, this field innovation and Research Team have carried out the design of a large amount of Technology Ways, research and development, achieve multipath compared with
For comprehensive local achievement.By market survey, current each disposing technique is general during harmless treatment electrolytic aluminium waste slot liner
Store-through is in the technical problems such as secondary pollution is serious, the adjustment of apparatus and process route is difficult, and relocation equipment transition is of high cost.Current electrolysis
The unripe electrolytic aluminium waste slot liner harmless disposal method of aluminium enterprise.
Invention content
The method of rock wool is prepared in order to solve the above technical problem, the present invention provides a kind of aluminium electroloysis waste lining and is
System, it is therefore an objective to realize innoxious, the recycling of waste lining, adequately utilize the main matter SiO in waste lining2With
AL2O3, and the calorific value of useless cathode is efficiently utilized, while recycling fluoride salt and can be used for Aluminum Electrolysis Production.
The present invention is achieved through the following technical solutions for the above-mentioned purpose：
The method that aluminium electroloysis waste lining prepares rock wool, by 60 mass parts of waste lining, the additive 15-25 mass parts of fluorine removal and useless the moon
Pole 20-30 mass parts are sent into high-temperature smelting pot, are carried out being heated to 1700-2000 DEG C by the useless cathode of burning, are heated at high temperature 15-25
After minute, molten state slag charge and fluoride salt are obtained, fluoride salt enters flue and recycled through off-gas recovery controlling device, by molten state slag
Expect to be sent into cooling crusher and carries out obtaining cured CaF after cooling is broken2With waste lining slag, by waste lining slag and 12-17 mass
It is sent into rock wool after the flyash mixing for forging rear gangue and 11-16 mass parts of part to prepare in smelting furnace, is heated to 1700-2000
DEG C, it is heated at high temperature 15-25 minutes, rock wool is sent to after being cooled to room temperature prepares production line and be manufactured into rock wool.
The additive of above-mentioned expense slot liner, fluorine removal, useless cathode, to forge rear gangue and the granularity of flyash be less than 400
The granularity of millimeter.
Rock wool prepared by aluminium electroloysis waste lining, it is prepared by the mass fraction by following raw materials：Waste lining 60
Mass parts, useless cathode 20-30 mass parts, forge rear gangue 12-17 mass parts, flyash at the additive 15-25 mass parts of fluorine removal
11-16 mass parts.
The additive of above-mentioned fluorine removal is biological material or coke.
Above-mentioned biological material is one or both of stalk and trees.
The system that aluminium electroloysis waste lining prepares rock wool, structure are as follows：Waste lining feed bin, additive storage bin, useless cathode material
The discharge port in storehouse is connected with the feeding mouth of high-temperature smelting pot, the cigarette of the exhanst gas outlet of high-temperature smelting pot and the first off-gas recovery controlling device
Gas entrance is connected, and the slag charge outlet of high-temperature smelting pot is connected with the feeding mouth of cooling crusher, the discharge port and slag of cooling crusher
The entrance of feed bin is connected, and discharge port and the rock wool in slag charge storehouse, calcining coal gangue feed bin and flyash feed bin prepare the pan feeding of smelting furnace
Mouthful it is connected, rock wool prepares the exhanst gas outlet and the of smelting furnaceTwoThe smoke inlet of off-gas recovery controlling device is connected, and rock wool prepares molten
The feeding mouth that slag charge discharge port and the rock wool of stove prepare production line is connected.
Above-mentioned waste lining feed bin, additive storage bin, useless cathode feed bin discharge port enter with the first belt conveyor
Material mouth is connected, and the discharge end of the first belt conveyor is connected with the feeding mouth of high-temperature smelting pot.
The discharge port and the second belt conveyor feeding mouth in above-mentioned slag charge storehouse, calcining coal gangue feed bin and flyash feed bin
It is connected, the feeding mouth that discharge end and the rock wool of the second belt conveyor prepare smelting furnace is connected.
Above-mentioned high-temperature smelting pot uses vertical cylinder smelting furnace；Rock wool prepares smelting furnace and uses vertical cylinder smelting furnace；First flue gas
Recycling and administration device and the second off-gas recovery controlling device be all by cyclone dust collectors, defluorinate spray column and bag filter successively
It is formed by connecting；Cooling crusher is using melting mineral water quenching machine.
Due to the adoption of the above technical scheme so that the invention has the advantages that and effect：
The present invention is used by waste lining, except fluoride additive and useless cathode deliver into high-temperature smelting pot according to the ratio, useless by burning
Cathode carries out being heated to 1700-2000 DEG C, and the innoxious molten state slag charge after high-temperature heating is after cooling crusher cooling is broken
It is discharged, in the waste lining of Central Plains, there is the resistance to material of 38-42% to be preserved as slag charge, there is the useless cathode of 28-32% to disappear as fuel
It consuming, has and decomposed under harmful cyanide high temperature on the right sides 1.5-2.5 into flue gas, the fluoride salt of 26-30% is volatized into flue gas,
The fluoride salt of middle 85-95% enters purification system recycling with flue gas and returns to Aluminum Electrolysis Production use, remaining 3-8% fluoride is cured
For harmless CaF2.Prepared rock wool, ingredient SiO2Content reaches 50-57%, AL2O3Content reaches 42-48%, is high-quality rock wool,
Rock wool is alternatively arranged as military use for part, such as the heat-insulating fireproof material of warship.
In whole system of the present invention, water, the minimum discharge up to standard of gas pollutant, environment protection standard can effectively improve useless resistance in fact
The harmless treatment efficiency of material and the maximization of resource reclaim.The present invention realizes innoxious, the recycling of waste lining, fills
The main matter SiO being utilized in useless resistance to material divided2And AL2O3, and the calorific value of useless cathode is effectively utilized, while recycling fluorine
Salt dissolving can be used for Aluminum Electrolysis Production, and environment protection standard processing meets the newest environment protectment protection of country and demand of technical standard.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
In figure：1, waste lining feed bin；2, additive storage bin；3, give up cathode feed bin；4, the first belt conveyor；5, high temperature melting
Stove；6, cooling crusher；7, the first off-gas recovery controlling device；8, slag charge storehouse；9, calcining coal gangue feed bin；10, fine coal ash material
Storehouse；11, the second belt conveyor；12, rock wool prepares smelting furnace；13, the second off-gas recovery controlling device；14, rock wool prepares production
Line.
Specific implementation mode
Carry out technical solution in the embodiment of the present invention with reference to the accompanying drawings and examples clearly completely to be described.It is aobvious
So described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
Method in following embodiments is unless otherwise instructed conventional method.
Embodiment 1
The method that aluminium electroloysis waste lining prepares rock wool by expense slot liner, stalk and trees, useless cathode, forges rear gangue and flyash
It is less than 400 millimeters, by 60 mass parts of waste lining, 10 mass parts of stalk, 10 mass parts of trees and useless cathode to be processed into granularity
25 mass parts are sent into high-temperature smelting pot, carry out being heated to 1800 DEG C by the useless cathode of burning, high-temperature heating after twenty minutes, is melted
Melt state slag charge and fluoride salt, fluoride salt enters flue and recycled through off-gas recovery controlling device, molten state slag charge is sent into cooling broken
Cured CaF is obtained after carrying out cooling be crushed in broken machine2With waste lining slag, waste lining slag and 15 mass parts are forged into rear gangue
It is prepared in smelting furnace with rock wool is sent into after the flyash mixing of 14 mass parts, is heated to 1800 DEG C, is heated at high temperature 20 minutes, is cooled to
It it is sent to rock wool after room temperature prepares production line and be manufactured into rock wool.The preparation process of rock wool is this field routine techniques, does not do and retouches in detail
It states.
Embodiment 2
The method that aluminium electroloysis waste lining prepares rock wool, by 20 mass parts of 60 mass parts of waste lining, 15 mass parts of stalk and useless cathode
It is sent into high-temperature smelting pot, carries out being heated to 2000 DEG C by the useless cathode of burning, high-temperature heating obtains molten state slag charge after 15 minutes
And fluoride salt, fluoride salt enter flue and are recycled through off-gas recovery controlling device, by molten state slag charge be sent into cooling crusher into
Cured CaF is obtained after row cooling is broken2With waste lining slag, waste lining slag and 12 mass parts are forged into rear gangue and 11 mass
It is sent into rock wool after the flyash mixing of part to prepare in smelting furnace, is heated to 2000 DEG C, is heated at high temperature 15 minutes, is sent after being cooled to room temperature
Production line, which is prepared, to rock wool is manufactured into rock wool.The preparation process of rock wool is this field routine techniques, is not described in detail.
Embodiment 3
The method that aluminium electroloysis waste lining prepares rock wool, by 30 mass parts of 60 mass parts of waste lining, 25 mass parts of trees and useless cathode
It is sent into high-temperature smelting pot, carries out being heated to 1700 DEG C by the useless cathode of burning, high-temperature heating obtains molten state slag charge after 25 minutes
And fluoride salt, fluoride salt enter flue and are recycled through off-gas recovery controlling device, by molten state slag charge be sent into cooling crusher into
Cured CaF is obtained after row cooling is broken2With waste lining slag, waste lining slag and 17 mass parts are forged into rear gangue and 16 mass
It is sent into rock wool after the flyash mixing of part to prepare in smelting furnace, is heated to 1700 DEG C, is heated at high temperature 25 minutes, is sent after being cooled to room temperature
Production line, which is prepared, to rock wool is manufactured into rock wool.
The preparation process of rock wool is this field routine techniques, is not described in detail.
Embodiment 4
The method that aluminium electroloysis waste lining prepares rock wool, will expense slot liner, coke, useless cathode, forge rear gangue and flyash is processed into
Granularity is less than 400 millimeters, and aluminium electroloysis waste lining is innoxious and recycles the method for preparing rock wool, by 60 mass of waste lining
Part, 22 mass parts of coke and 22 mass parts of useless cathode are sent into high-temperature smelting pot, carry out being heated to 1900 DEG C by the useless cathode of burning,
High-temperature heating obtains molten state slag charge and fluoride salt after 22 minutes, and fluoride salt enters flue and recycled through off-gas recovery controlling device,
Molten state slag charge is sent into cooling crusher after carrying out cooling be crushed and obtains cured CaF2With waste lining slag, by waste lining slag
It is sent into rock wool after mixing with the flyash for forging rear gangue and 13 mass parts of 14 mass parts to prepare in smelting furnace, is heated to 1900
DEG C, it is heated at high temperature 22 minutes, rock wool is sent to after being cooled to room temperature prepares production line and be manufactured into rock wool.
The preparation process of rock wool is this field routine techniques, is not described in detail.
Embodiment 5
The method that aluminium electroloysis waste lining prepares rock wool, aluminium electroloysis waste lining is innoxious and recycles the method for preparing rock wool, will
Expense slot liner, trees, useless cathode, forge rear gangue and flyash to be processed into granularity be less than 400 millimeters, by 60 mass of waste lining
Part, 27 mass parts of trees and 27 mass parts of useless cathode are sent into high-temperature smelting pot, carry out being heated to 185 DEG C by the useless cathode of burning,
High-temperature heating obtains molten state slag charge and fluoride salt after 17 minutes, and fluoride salt enters flue and recycled through off-gas recovery controlling device,
Molten state slag charge is sent into cooling crusher after carrying out cooling be crushed and obtains cured CaF2With waste lining slag, by waste lining slag
It is sent into rock wool after mixing with the flyash for forging rear gangue and 15 mass parts of 16 mass parts to prepare in smelting furnace, is heated to 1850
DEG C, it is heated at high temperature 17 minutes, rock wool is sent to after being cooled to room temperature prepares production line and be manufactured into rock wool.The preparation process of rock wool is this
Field routine techniques, is not described in detail.
The method that the aluminium electroloysis waste lining of embodiment 1-5 prepares rock wool in the waste lining of Central Plains, has the resistance to material of 38-42% to make
It is preserved for slag charge, there is the useless cathode of 28-32% to fall as fuel consumption, there is lower point of harmful cyanide high temperature on the right sides 1.5-2.5
Solution enters flue gas, and the fluoride salt of 26-30% is volatized into flue gas, and the wherein fluoride salt of 85-95% enters purification system with flue gas and returns
It receives and returns to Aluminum Electrolysis Production use, remaining 3-8% fluoride is cured as harmless CaF2.Rock wool prepared by embodiment 1-5,
Ingredient SiO2Content reaches 50-57%, AL2O3Content reaches 42-48%, is high-quality rock wool, and part rock wool is alternatively arranged as military use, such as
The heat-insulating fireproof material of warship.The percentage composition is mass percentage.
As shown in Figure 1, the system that aluminium electroloysis waste lining of the present invention prepares rock wool, structure are as follows：Waste lining feed bin 1 adds
The discharge port of agent feed bin 2, useless cathode feed bin 3 is added to be connected with the feeding mouth of the first belt conveyor 4, the first belt conveyor 4
Discharge end be connected with the feeding mouth of high-temperature smelting pot 5, the exhanst gas outlet of high-temperature smelting pot 5 and the first off-gas recovery controlling device 7
Smoke inlet is connected, and the slag charge outlet of high-temperature smelting pot 5 is connected with the feeding mouth of cooling crusher 6, the discharge port of cooling crusher 6
It is connected with the entrance in slag charge storehouse 8, the discharge port in slag charge storehouse 8, calcining coal gangue feed bin 9 and flyash feed bin 10 and the second belt are defeated
The feeding mouth of machine 11 is sent to be connected, the feeding mouth that the discharge end of the second belt conveyor 11 prepares smelting furnace 12 with rock wool is connected, rock wool
Prepare the exhanst gas outlet and of smelting furnace 12TwoThe smoke inlet of off-gas recovery controlling device 13 is connected, and rock wool prepares the slag of smelting furnace 12
The feeding mouth that material discharge port prepares production line 14 with rock wool is connected.
Above-mentioned high-temperature smelting pot 5 uses vertical cylinder smelting furnace；Cooling crusher 6 is using melting mineral water quenching machine；Rock wool system
Standby smelting furnace 12 uses vertical cylinder smelting furnace.First off-gas recovery controlling device 7 and the second off-gas recovery controlling device 13 be all by
Cyclone dust collectors, defluorinate spray column and bag filter are connected in sequence.
Whole system of the present invention, water, the minimum discharge up to standard of gas pollutant, environment protection standard can effectively improve useless resistance to material
The maximization of harmless treatment efficiency and resource reclaim.The present invention realizes innoxious, the recycling of waste lining, adequately
The main matter SiO in useless resistance to material is utilized2And AL2O3, and the calorific value of useless cathode is effectively utilized, while recycling fluoride salt
It can be used for Aluminum Electrolysis Production, environment protection standard processing meets the newest environment protectment protection of country and demand of technical standard.
Claims (10)
1. the method that aluminium electroloysis waste lining prepares rock wool, it is characterised in that：By the additive 15- of 60 mass parts of waste lining, fluorine removal
25 mass parts and useless cathode 20-30 mass parts are sent into high-temperature smelting pot, carry out being heated to 1700-2000 by the useless cathode of burning
DEG C, high-temperature heating obtains molten state slag charge and fluoride salt after 15-25 minutes, and fluoride salt enters flue and administers dress through off-gas recovery
Receipts are put back into, molten state slag charge is sent into cooling crusher after carrying out cooling be crushed and obtains cured CaF2With waste lining slag, will give up
The flyash for forging rear gangue and 11-16 mass parts of slot liner slag and 12-17 mass parts is sent into rock wool after mixing and is prepared in smelting furnace,
It is heated to 1700-2000 DEG C, is heated at high temperature 15-25 minutes, rock wool is sent to after being cooled to room temperature prepares production line and be manufactured into rock wool.
2. the method that aluminium electroloysis waste lining according to claim 1 prepares rock wool, it is characterised in that the fluorine removal adds
It is biological material or coke to add agent.
3. the method that a kind of aluminium electroloysis waste lining according to claim 1 prepares rock wool, it is characterised in that described takes slot
Lining, the additive of fluorine removal, useless cathode, to forge rear gangue and the granularity of flyash be less than 400 millimeters of granularity.
4. rock wool prepared by aluminium electroloysis waste lining, it is characterised in that it is prepared by the mass fraction by following raw materials：
60 mass parts of waste lining, useless cathode 20-30 mass parts, forge rear gangue 12-17 mass at the additive 15-25 mass parts of fluorine removal
Part, flyash 11-16 mass parts.
5. rock wool prepared by aluminium electroloysis waste lining according to claim 1, it is characterised in that the additive of the fluorine removal
For biological material or coke.
6. rock wool prepared by aluminium electroloysis waste lining according to claim 5, it is characterised in that the biological material is
One or both of stalk and trees.
7. the system that aluminium electroloysis waste lining prepares rock wool, it is characterised in that structure is as follows：Waste lining feed bin, gives up at additive storage bin
The discharge port of cathode feed bin is connected with the feeding mouth of high-temperature smelting pot, and the exhanst gas outlet of high-temperature smelting pot and the first off-gas recovery are administered and filled
The smoke inlet set is connected, and the slag charge outlet of high-temperature smelting pot is connected with the feeding mouth of cooling crusher, the discharging of cooling crusher
Mouth is connected with the entrance in slag charge storehouse, and slag charge storehouse, the discharge port of calcining coal gangue feed bin and flyash feed bin and rock wool prepare smelting furnace
Feeding mouth be connected, rock wool prepares the exhanst gas outlet and the of smelting furnaceTwoThe smoke inlet of off-gas recovery controlling device is connected, rock wool
The slag charge discharge port for preparing smelting furnace prepares the feeding mouth of production line with rock wool and is connected.
8. the system that aluminium electroloysis waste lining according to claim 7 prepares rock wool, it is characterised in that the waste lining material
Storehouse, additive storage bin, useless cathode feed bin discharge port be connected with the feeding mouth of the first belt conveyor, the first belt conveyor
Discharge end be connected with the feeding mouth of high-temperature smelting pot.
9. the system that aluminium electroloysis waste lining according to claim 7 prepares rock wool, it is characterised in that the slag charge storehouse is forged
The discharge port of burned coal gangue feed bin and flyash feed bin is connected with the second belt conveyor feeding mouth, and the second belt conveyor goes out
The feeding mouth that material end prepares smelting furnace with rock wool is connected.
10. the system that aluminium electroloysis waste lining according to claim 7 prepares rock wool, it is characterised in that the high-temperature smelting pot
Using vertical cylinder smelting furnace；Rock wool prepares smelting furnace and uses vertical cylinder smelting furnace；First off-gas recovery controlling device and the second flue gas
Recycling and administration device is connected in sequence by cyclone dust collectors, defluorinate spray column and bag filter；Cooling crusher is adopted
With melting mineral water quenching machine.
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| CN109748494A (en) * | 2019-03-05 | 2019-05-14 | 沈阳化工大学 | It is a kind of to utilize waste refractory materials spent resin sand and boric sludge for aluminium silicate wool method |
| CN112538557A (en) * | 2020-11-11 | 2021-03-23 | 甘肃酒钢集团宏兴钢铁股份有限公司 | System and method for harmless and resource treatment of aluminum industry waste cathode carbon blocks |
| CN113880443A (en) * | 2021-09-25 | 2022-01-04 | 清远金谷智联环保产业研究院有限公司 | Method for preparing high-strength-toughness heat-preservation rock wool board by using nickel smelting furnace slag |
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