CN103851632B - Electrolytic aluminium waste cathode carbon block recycling treatment system and processing method - Google Patents
Electrolytic aluminium waste cathode carbon block recycling treatment system and processing method Download PDFInfo
- Publication number
- CN103851632B CN103851632B CN201410089371.1A CN201410089371A CN103851632B CN 103851632 B CN103851632 B CN 103851632B CN 201410089371 A CN201410089371 A CN 201410089371A CN 103851632 B CN103851632 B CN 103851632B
- Authority
- CN
- China
- Prior art keywords
- carbon block
- cathode carbon
- temp
- flue gas
- waste 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.)
- Active
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 58
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 55
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 41
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000004411 aluminium Substances 0.000 title claims abstract description 36
- 238000004064 recycling Methods 0.000 title claims abstract description 25
- 238000003672 processing method Methods 0.000 title claims abstract description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000003546 flue gas Substances 0.000 claims abstract description 62
- 238000002485 combustion reaction Methods 0.000 claims abstract description 51
- 239000000843 powder Substances 0.000 claims abstract description 28
- 238000005108 dry cleaning Methods 0.000 claims abstract description 18
- 239000002671 adjuvant Substances 0.000 claims abstract description 13
- 238000001179 sorption measurement Methods 0.000 claims description 47
- 238000006243 chemical reaction Methods 0.000 claims description 34
- 239000007789 gas Substances 0.000 claims description 29
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 22
- 230000008676 import Effects 0.000 claims description 16
- 239000000779 smoke Substances 0.000 claims description 16
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000003463 adsorbent Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 9
- 229910002651 NO3 Inorganic materials 0.000 claims description 7
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 7
- 229920002472 Starch Polymers 0.000 claims description 7
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 7
- 239000000292 calcium oxide Substances 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 7
- 239000003792 electrolyte Substances 0.000 claims description 7
- 239000012286 potassium permanganate Substances 0.000 claims description 7
- 235000019698 starch Nutrition 0.000 claims description 7
- 239000008107 starch Substances 0.000 claims description 7
- 230000008602 contraction Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 238000000498 ball milling Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000002594 sorbent Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 16
- 238000011084 recovery Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 13
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000000746 purification Methods 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000011449 brick Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 229910016569 AlF 3 Inorganic materials 0.000 description 1
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Landscapes
- Electrolytic Production Of Metals (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of electrolytic aluminium waste cathode carbon block recycling treatment system and processing method, be intended to solve the technical problem that the existing waste cathode carbon block rate of recovery is low, energy waste is serious, cost recovery is high.This treatment system comprises high-temp. vortex stove and dry cleaning device, and described high-temp. vortex stove comprises body of heater, burner and heat exchanger.This processing method is: first electrolytic aluminium waste cathode carbon block is broken into powder; The powder of gained adds combustion adjuvant burning by high-temp. vortex stove; After the flue gas that burning produces provides preheating by the secondary air that heat exchanger is high-temp. vortex stove, be purified by dry cleaning device.The present invention can realize electrolytical high-purity in waste cathode carbon block and reclaim; Take full advantage of the heat energy that powder burning produces, reduce energy consumption, avoid the waste of the energy; The method is easy and simple to handle, energy-conserving and environment-protective, and the resource that can realize waste cathode carbon block is recycled.
Description
Technical field
The present invention relates to the fixed-end forces technical field in Aluminum Electrolysis Production process, be specifically related to a kind of electrolytic aluminium waste cathode carbon block recycling treatment system and processing method.
Background technology
In Aluminum Electrolysis Production process, cathode inner lining and other furnace building materials absorb a large amount of containing villiaumite for a long time by the erosion of sodium, electrolyte and aluminium, the effect of stress simultaneously produced in erosion process can make electrolytic cell be out of shape and inner lining damage, electrolytic cell must carry out large repairs when running to certain life-span (6 ~ 8 years), during overhaul, cell lining will be changed, and comprise end cathode block, refractory brick, insulating brick and impervious material and sidepiece silicon carbide brick.Therefore, in aluminum production, casting process and in electrolytic cell overhaul process, the solid waste such as a large amount of waste cathode carbon blocks, useless insulating brick, waste refractory materials and useless cathode square steel can be produced.According to statistics, often produce and cast one ton of aluminium, approximately produce 20 ~ 30kg and to give up negative electrode, 2013, China's primary aluminum output reached 2,000 ten thousand tons, accounts for 45% of global total output, produced waste and old carbon cathode discharge capacity and reached 400,000 tons.The original set of cathode block becomes anthracite and pitch binder.In electrolytic process, owing to being subject to molten salt react ion, chemical reaction that heat effect, chemical action, mechanical erosion effect, electro ultrafiltration, sodium and electrolytical infiltration etc. cause, the cathode block in aluminium cell can be damaged after using certain hour.General containing C, NaF, Na in waste cathode carbon block
3alF
6, AlF
3, CaF
2, Al
2o
3deng composition, be wherein about 0.2% containing C about 50% ~ 70%, electrolyte fluoride about 50% ~ 30%, cyanide.
Mainly contain roasting method, floatation and sulfuric acid decomposition method to the process of waste cathode carbon block at present, these methods can reclaim a part of electrolyte in waste cathode carbon block and carbon dust.But floatation and sulfuric acid decomposition method cannot remove the cyanide in waste cathode carbon block, cyanide and partially fluorinated thing enter waste liquid and easily cause secondary pollution; Adopt roasting method using the carbon in waste cathode carbon block as fuel recovery, the heat that burning produces is difficult to effective utilization, causes a large amount of energy wastes, and cannot reach the requirement of the rigid temperature control in roasting process.The problem low for the existing waste cathode carbon block recovery method rate of recovery, energy waste is serious, cost recovery is high, studying a kind of electrolytic aluminium waste cathode carbon block recycling treatment process that is efficient, energy-saving and environmental protection is that pole is necessary.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of recovery utilization rate is high, cost is low and the electrolytic aluminium waste cathode carbon block recycling treatment system of energy-conserving and environment-protective and processing method.
For solving the problems of the technologies described above, electrolytic aluminium waste cathode carbon block recycling treatment system of the present invention comprises high-temp. vortex stove and dry cleaning device, and described high-temp. vortex stove comprises body of heater, burner and heat exchanger;
Described upper of furnace body is provided with material box, bottom is provided with combustion chamber, be connected by feeding-passage between described material box and described combustion chamber, described feeding-passage is provided with inlet valve, described combustion chamber is provided with air inlet, flue and discharge gate, and described air inlet is provided with volume damper; Described burner is arranged at the below of described combustion chamber;
Described heat exchanger is arranged at the outside of described combustion chamber, comprise cold wind import, hot-blast outlet, high-temperature flue gas import and low-temperature flue gas outlet, described hot-blast outlet is corresponding with the air inlet of described combustion chamber to be communicated with, and described high-temperature flue gas import is corresponding with the flue of described combustion chamber to be communicated with; Described low-temperature flue gas outlet is connected with described dry cleaning device.
Adopt the beneficial effect of above-mentioned electrolytic aluminium waste cathode carbon block treatment system to be, use high-temp. vortex stove, the powder Thorough combustion after waste cathode carbon block fragmentation can be made, realize electrolytical high-purity in waste cathode carbon block and reclaim; Flue gas after burning is recycled by heat exchanger, for the secondary air of cyclone furnace carries out preheating, takes full advantage of the heat energy that burning produces, reduces energy consumption, avoids the waste of the energy; The waste gas that high-temp. vortex fire grate goes out, by dry cleaning device, can remove the harmful substance in waste gas, is discharged by the innocuous gas after purification, guarantees free from environmental pollution, realize cleaner production; This Dynamic System is easy, energy-conserving and environment-protective, and the resource that can realize waste cathode carbon block is recycled, and is suitable for large-scale production and application.
Preferably, described dry cleaning device comprises smoke collection pipe, adsorption reaction unit and gas-solid separative element, described smoke collection pipe is connected with the low-temperature flue gas exit seal of described heat exchanger, described adsorption reaction unit comprises the smoke inlet section be connected successively, conical contraction section, cylindrical venturi, conical flue gas diffuser, be provided with an adsorbent input port in described smoke inlet section, be provided with second adsorption agent input port at described flue gas diffuser; Described gas solid separation unit comprises deduster and air-introduced machine, and the bottom ash-laden gas import of described deduster and the flue gas diffuser of described adsorption reaction unit are tightly connected, and described air-introduced machine is arranged at the pure qi (oxygen) exit of described deduster.
Preferably, a described adsorbent is fluorinated alumina, and described second adsorption agent is fresh aluminum oxide.
Preferably, described sack cleaner is the long bag dust collector of action of low-voltage pulse.
Preferably, described air-introduced machine is centrifugal induced draught fan.
Above-mentioned dry cleaning device adopts second adsorption technology, first uses active relatively poor fluorinated alumina to carry out first time adsorption reaction as the flue gas that adsorbent and fluoro-containing concentration are high, a part of fluoride in removal flue gas; And then by active higher fresh aluminum oxide, second time adsorption reaction is carried out to fluoride remaining in flue gas, thus obtain higher fluorine purification efficiency, the use amount of adsorbent can be saved simultaneously, reduce production cost.The overall structure of above-mentioned adsorption reaction unit is venturi tube structure, when flue gas enters conical flue gas diffuser by cylindrical venturi, (principle of Venturi effect is: when wind blows over obstacle to produce Venturi effect, above the lee face of obstacle, near ports air pressure is relatively low, thus produce suction-operated and cause the flowing of air), better adsorption effect can be reached.
Preferably, described high-temp. vortex stove also comprises the temperature sensor and pressure sensor that are arranged at described combustion chamber.
Preferably, described high-temp. vortex stove also comprises PLC, and the input of described PLC is connected with pressure sensor with described temperature sensor, and the output of described PLC is connected with described volume damper with described inlet valve.
Adopt above-mentioned PLC, the data can transmitted according to temperature sensor and pressure sensor, Real-Time Monitoring is carried out to the temperature and pressure of high-temp. vortex furnace interior, by controlling described inlet valve and described volume damper to the feeding coal of high-temp. vortex stove and air quantity, regulate the temperature and pressure of high-temp. vortex furnace interior, high-temp. vortex stove is made to be in required duty, significantly improve the control accuracy of the temperature and pressure of high-temp. vortex stove, and whole operation realizes automation, manual operation can be reduced, reduce labour intensity.
Electrolytic aluminium waste cathode carbon block recycling processing method of the present invention comprises the following steps:
(1) electrolytic aluminium waste cathode carbon block being carried out that Hubei Province is broken, obtaining granularity after ball milling is 50 order ~ 200 object powders;
(2) powder of step (1) gained is joined in the high-temp. vortex stove in described electrolytic aluminium waste cathode carbon block recycling treatment system, interpolation combustion adjuvant makes the carbon dust Thorough combustion in this powder, and the addition of described combustion adjuvant is 3 ~ 5 ‰ of described powder quality;
(3) high-temperature flue gas of powder burning gained, by described heat exchanger, after described high-temp. vortex stove secondary air provides preheating, is converted into low-temperature flue gas in step (2);
(4) electrolyte of discharging from described high-temp. vortex stove discharge gate after collecting step (2) powder Thorough combustion;
(5) described in step (3), low-temperature flue gas enters the adsorption reaction unit in described dry cleaning device, and the solid-gas ratio of the adsorbent fluorinated alumina added in adsorption reaction process is 20 ~ 30g/m
3, the solid-gas ratio of the second adsorption agent fresh aluminum oxide added is 5 ~ 15g/m
3;
(6) ash-laden gas obtained after step (5) adsorption reaction is by described gas solid separation unit, and purified gas is discharged, and the fluorinated alumina of separation uses as time sorbent circulation of in adsorption reaction unit.
Described in step (2), combustion adjuvant is made up of nitrate, potassium permanganate, calcium oxide, iron oxide and starch, wherein shared by each component, mass percent is: nitrate 1 ~ 3%, potassium permanganate 18 ~ 45%, calcium oxide 4 ~ 7%, iron oxide 4 ~ 8%, and surplus is starch.
Described in step (2), high-temp. vortex stove chamber pressure is-10 ~ 10Pa, and operating temperature range is 750 DEG C ~ 800 DEG C, and temperature control precision is at ± 5 DEG C.
The beneficial effect of electrolytic aluminium waste cathode carbon block recycling processing method of the present invention is, high-temp. vortex stove is adopted to burn to the powder after waste cathode carbon block fragmentation, adding combustion adjuvant can make burning more abundant, and then realizes electrolytical high-purity recovery in waste cathode carbon block; Flue gas after burning is recycled by heat exchanger, for the secondary air of cyclone furnace carries out preheating, takes full advantage of the heat energy that burning produces, reduces energy consumption, avoids the waste of the energy; The waste gas that high-temp. vortex fire grate goes out, by dry cleaning device, can remove the harmful substance in waste gas, is discharged by the innocuous gas after purification, guarantees free from environmental pollution, realize cleaner production; The method is easy and simple to handle, energy-conserving and environment-protective, and the resource that can realize waste cathode carbon block is recycled, and reducing solid waste processing cost for Aluminum Electrolysis Production field has important effect.
For the concrete structure of electrolytic aluminium waste cathode carbon block recycling treatment system of the present invention and effect thereof and effect, and the concrete operation step of electrolytic aluminium waste cathode carbon block recycling processing method of the present invention and flow process, further detailed description will be made by reference to the accompanying drawings below.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of electrolytic aluminium waste cathode carbon block recycling treatment system of the present invention.
Fig. 2 is the structural representation of high-temp. vortex stove in electrolytic aluminium waste cathode carbon block recycling treatment system of the present invention.
Fig. 3 is the enlarged drawing of region B in Fig. 2.
Fig. 4 is the A-A view of Fig. 2.
Wherein, 1 is high-temp. vortex stove; 2 is body of heater; 3 is burner; 4 is heat exchanger; 5 is material box; 6 is combustion chamber; 7 is inlet valve; 8 is air inlet; 9 is flue; 10 is discharge gate; 11 is cold wind import; 12 is hot-blast outlet; 13 is high-temperature flue gas import; 14 is low-temperature flue gas outlet; 15 is smoke collection pipe; 16 is smoke inlet section; 17 is contraction section; 18 is venturi; 19 is flue gas diffuser; 20 is deduster; 21 is ash-laden gas import; 22 is pure qi (oxygen) outlet.
Detailed description of the invention
The following examples are only used to describe the present invention in detail, and limit the scope of the invention never in any form.
Embodiment 1: a kind of electrolytic aluminium waste cathode carbon block treatment system, as shown in Fig. 1 ~ Fig. 4, comprise high-temp. vortex stove 1 and dry cleaning device, described high-temp. vortex stove 1 comprises body of heater 2, burner 3 and heat exchanger 4; Described body of heater 2 top is provided with material box 5, bottom is provided with combustion chamber 6, be connected by feeding-passage between described material box 5 and described combustion chamber 6, described feeding-passage is provided with inlet valve 7, described combustion chamber 6 is provided with air inlet 8, flue 9 and discharge gate 10, and described air inlet 8 is provided with volume damper; Described burner 3 is arranged at the below of described combustion chamber 6; Described heat exchanger 4 is arranged at the outside of described combustion chamber 6, comprise cold wind import 11, hot-blast outlet 12, high-temperature flue gas import 13 and low-temperature flue gas outlet 14, described hot-blast outlet 12 is corresponding with the air inlet 8 of described combustion chamber 6 to be communicated with, and described high-temperature flue gas import 13 is corresponding with the flue 9 of described combustion chamber 6 to be communicated with; Described low-temperature flue gas outlet 14 is connected with described dry cleaning device.
Described dry cleaning device comprises smoke collection pipe 15, adsorption reaction unit and gas-solid separative element, described smoke collection pipe 15 exports 14 with the low-temperature flue gas of described heat exchanger 4 and is tightly connected, described adsorption reaction unit comprises the smoke inlet section 16, conical contraction section 17, cylindrical venturi 18, the conical flue gas diffuser 19 that are connected successively, be provided with an adsorbent input port in described smoke inlet section 16, be provided with second adsorption agent input port at described flue gas diffuser 19; Described gas solid separation unit comprises deduster 20 and air-introduced machine, and the bottom ash-laden gas import 21 of described deduster 20 is tightly connected with the flue gas diffuser 19 of described adsorption reaction unit, and the pure qi (oxygen) that described air-introduced machine is arranged at described deduster 20 exports 22 places.A described adsorbent is fluorinated alumina, and described second adsorption agent is fresh aluminum oxide.Described deduster 20 is the long bag dust collector of action of low-voltage pulse.Described air-introduced machine is centrifugal induced draught fan.
Described high-temp. vortex stove 1 also comprises the temperature sensor and pressure sensor that are arranged at inside, described combustion chamber 6.Described high-temp. vortex stove 1 also comprises PLC, and the input of described PLC is connected with pressure sensor with described temperature sensor, and the output of described PLC is connected with described volume damper with described inlet valve.
The working method of described electrolytic aluminium waste cathode carbon block treatment system is as follows:
After electrolytic aluminium waste cathode carbon block being broken into the powder of desired particle size, be transported in the material box 5 of high-temp. vortex stove 1, before high-temp. vortex stove 1 works, carry out baker and intensification by burner 3 pairs of high-temp. vortex stoves 1, when temperature reaches 750 ~ 800 DEG C, duty can be entered.While powder enters combustion chamber 6 by material box 5, extraneous cold wind enters heat exchanger 4 from cold wind import 11, combustion chamber 6 is entered by air inlet 8 after preheating, forming high speed hot blast drives powder at combustion chamber 6 inner high speed rotary combustion, and high-purity electrolyte that powder Thorough combustion produces is discharged by discharge gate 10.
Burner 3 supplements partial heat for high-temp. vortex stove 1, the high-temperature flue gas produced in combustion chamber 6 enters the high-temperature flue gas entry of heat exchanger 4 by flue 9, the cold wind entered with the external world in heat exchanger 4 carries out heat exchange, the temperature of self is made to reduce while carrying out preheating to this cold wind, form low-temperature flue gas to discharge through the low-temperature flue gas outlet 14 of heat exchanger 4, enter the adsorption reaction unit of dry cleaning device.
Low-temperature flue gas is successively by the smoke inlet section 16 of adsorption reaction unit, conical contraction section 17, cylindrical venturi 18 and conical flue gas diffuser 19, first active relatively poor fluorinated alumina is used to carry out first time adsorption reaction as the flue gas that adsorbent and fluoro-containing concentration are high in smoke inlet section, a part of fluoride in removal flue gas; Then flue gas diffuser again with the higher fresh aluminum oxide of activity to flue gas in remaining fluoride carry out second time adsorption reaction, the fluoride further in removal flue gas.The overall structure of this adsorption reaction unit is venturi tube structure, when flue gas enters conical flue gas diffuser by cylindrical venturi, (principle of Venturi effect is: when wind blows over obstacle to produce Venturi effect, above the lee face of obstacle, near ports air pressure is relatively low, thus produce suction-operated and cause the flowing of air), thus strengthen the adsorption effect of flue gas diffuser, coordinate second adsorption technology simultaneously, can time flue gas fluorine purification efficiency higher, reach more than 99%.Fluoride absorption in flue gas is also reacted with it and is generated fluorinated alumina by aluminium oxide, from the flue gas containing fluorinated alumina that adsorption reaction unit is discharged, enter in the deduster of gas solid separation unit again, reclaimed by fluorinated alumina wherein, the flue gas after purification is discharged.
Embodiment 2: a kind of electrolytic aluminium waste cathode carbon block recycling processing method, comprises the following steps:
(1) electrolytic aluminium waste cathode carbon block being carried out that Hubei Province is broken, obtaining granularity after ball milling is 50 order ~ 200 object powders;
(2) joined by the powder of step (1) gained in the high-temp. vortex stove in described electrolytic aluminium waste cathode carbon block recycling treatment system, interpolation combustion adjuvant makes the carbon dust Thorough combustion in this powder, and the addition of described combustion adjuvant is 3 ‰ of described powder quality.Described combustion adjuvant is made up of nitrate, potassium permanganate, calcium oxide, iron oxide and starch, and wherein shared by each component, mass percent is: nitrate 3%, potassium permanganate 40%, calcium oxide 6%, iron oxide 8%, and surplus is starch;
(3) high-temperature flue gas of powder burning gained, by described heat exchanger, after described high-temp. vortex stove secondary air provides preheating, is converted into low-temperature flue gas in step (2);
(4) electrolyte of discharging from described high-temp. vortex stove discharge gate after collecting step (2) powder Thorough combustion;
(5) described in step (3), low-temperature flue gas enters the adsorption reaction unit in described dry cleaning device, and the solid-gas ratio of the adsorbent fluorinated alumina added in adsorption reaction process is 25g/m
3, the solid-gas ratio of the second adsorption agent fresh aluminum oxide added is 10g/m
3;
(6) ash-laden gas obtained after step (5) adsorption reaction is by described gas solid separation unit, and purified gas is discharged, and the fluorinated alumina of separation uses as time sorbent circulation of in adsorption reaction unit.
Embodiment 3: be with the difference of embodiment 2, described in step (2), the addition of combustion adjuvant is 5 ‰ of described powder quality, shared by each component of described combustion adjuvant, mass percent is: nitrate 1%, potassium permanganate 20%, calcium oxide 4%, iron oxide 5%, and surplus is starch.
Embodiment 4: be with the difference of embodiment 2, the solid-gas ratio of the adsorbent fluorinated alumina added in adsorption reaction process in step (5) is 20g/m
3, the solid-gas ratio of the second adsorption agent fresh aluminum oxide added is 15g/m
3.
Embodiment 5: be with the difference of embodiment 3, the solid-gas ratio of the adsorbent fluorinated alumina added in adsorption reaction process in step (5) is 30g/m
3, the solid-gas ratio of the second adsorption agent fresh aluminum oxide added is 5g/m
3.
Instrument and equipment involved in above embodiment if no special instructions, is routine instrument device; The involved raw material of industry if no special instructions, is commercially available regular industrial raw material.
In conjunction with the accompanying drawings and embodiments the present invention is described in detail above, but, person of ordinary skill in the field can understand, under the prerequisite not departing from present inventive concept, each design parameter in above-described embodiment can also be changed, form multiple specific embodiment, be common excursion of the present invention, describe in detail no longer one by one at this.
Claims (8)
1. an electrolytic aluminium waste cathode carbon block recycling treatment system, is characterized in that, comprises high-temp. vortex stove and dry cleaning device, and described high-temp. vortex stove comprises body of heater, burner and heat exchanger;
Described upper of furnace body is provided with material box, bottom is provided with combustion chamber, be connected by feeding-passage between described material box and described combustion chamber, described feeding-passage is provided with inlet valve, described combustion chamber is provided with air inlet, flue and discharge gate, and described air inlet is provided with volume damper; Described burner is arranged at the below of described combustion chamber;
Described heat exchanger is arranged at the outside of described combustion chamber, comprise cold wind import, hot-blast outlet, high-temperature flue gas import and low-temperature flue gas outlet, described hot-blast outlet is corresponding with the air inlet of described combustion chamber to be communicated with, and described high-temperature flue gas import is corresponding with the flue of described combustion chamber to be communicated with; Described low-temperature flue gas outlet is connected with described dry cleaning device;
Described dry cleaning device comprises smoke collection pipe, adsorption reaction unit and gas-solid separative element, described smoke collection pipe is connected with the low-temperature flue gas exit seal of described heat exchanger, described adsorption reaction unit comprises the smoke inlet section be connected successively, conical contraction section, cylindrical venturi, conical flue gas diffuser, be provided with an adsorbent input port in described smoke inlet section, be provided with second adsorption agent input port at described flue gas diffuser; Described gas solid separation unit comprises deduster and air-introduced machine, and the bottom ash-laden gas import of described deduster and the flue gas diffuser of described adsorption reaction unit are tightly connected, and described air-introduced machine is arranged at the pure qi (oxygen) exit of described deduster; A described adsorbent is fluorinated alumina, and described second adsorption agent is aluminium oxide.
2. electrolytic aluminium waste cathode carbon block recycling treatment system according to claim 1, is characterized in that, described deduster is the long bag dust collector of action of low-voltage pulse.
3. electrolytic aluminium waste cathode carbon block recycling treatment system according to claim 1, it is characterized in that, described air-introduced machine is centrifugal induced draught fan.
4. electrolytic aluminium waste cathode carbon block recycling treatment system according to claim 1, it is characterized in that, described high-temp. vortex stove also comprises the temperature sensor and pressure sensor that are arranged at described combustion chamber.
5. electrolytic aluminium waste cathode carbon block recycling treatment system according to claim 4, it is characterized in that, described high-temp. vortex stove also comprises PLC, the input of described PLC is connected with pressure sensor with described temperature sensor, and the output of described PLC is connected with described volume damper with described inlet valve.
6. an electrolytic aluminium waste cathode carbon block recycling processing method, is characterized in that, comprise the following steps:
(1) electrolytic aluminium waste cathode carbon block being carried out that Hubei Province is broken, obtaining granularity after ball milling is 50 order ~ 200 object powders;
(2) powder of step (1) gained is joined in the described high-temp. vortex stove in electrolytic aluminium waste cathode carbon block recycling treatment system described in claim 1, interpolation combustion adjuvant makes the carbon dust Thorough combustion in this powder, and the addition of described combustion adjuvant is 3 ~ 5 ‰ of described powder quality;
(3) high-temperature flue gas of powder burning gained, by described heat exchanger, after described high-temp. vortex stove secondary air provides preheating, is converted into low-temperature flue gas in step (2);
(4) electrolyte of discharging from described high-temp. vortex stove discharge gate after collecting step (2) powder Thorough combustion;
(5) described in step (3), low-temperature flue gas enters the adsorption reaction unit in described dry cleaning device, and the solid-gas ratio of the adsorbent fluorinated alumina added in adsorption reaction process is 20 ~ 30g/m
3, the solid-gas ratio of the second adsorption agent fresh aluminum oxide added is 5 ~ 15g/m
3;
(6) ash-laden gas obtained after step (5) adsorption reaction is by described gas solid separation unit, and purified gas is discharged, and the fluorinated alumina of separation uses as time sorbent circulation of in adsorption reaction unit.
7. electrolytic aluminium waste cathode carbon block recycling processing method according to claim 6, it is characterized in that, described in step (2), combustion adjuvant is made up of nitrate, potassium permanganate, calcium oxide, iron oxide and starch, wherein shared by each component, mass percent is: nitrate 1 ~ 3%, potassium permanganate 18 ~ 45%, calcium oxide 4 ~ 7%, iron oxide 4 ~ 8%, and surplus is starch.
8. electrolytic aluminium waste cathode carbon block recycling processing method according to claim 6, it is characterized in that, described in step (2), high-temp. vortex stove chamber pressure is-10 ~ 10Pa, and operating temperature range is 750 DEG C ~ 800 DEG C, and temperature control precision is at ± 5 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410089371.1A CN103851632B (en) | 2014-03-12 | 2014-03-12 | Electrolytic aluminium waste cathode carbon block recycling treatment system and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410089371.1A CN103851632B (en) | 2014-03-12 | 2014-03-12 | Electrolytic aluminium waste cathode carbon block recycling treatment system and processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103851632A CN103851632A (en) | 2014-06-11 |
| CN103851632B true CN103851632B (en) | 2016-04-27 |
Family
ID=50859604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410089371.1A Active CN103851632B (en) | 2014-03-12 | 2014-03-12 | Electrolytic aluminium waste cathode carbon block recycling treatment system and processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103851632B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104975308B (en) * | 2015-07-11 | 2017-11-07 | 云南云铝润鑫铝业有限公司 | A kind of method that aluminium electroloysis waste lining recycling closed loop is utilized |
| WO2017031798A1 (en) * | 2015-08-24 | 2017-03-02 | 沈阳北冶冶金科技有限公司 | Apparatus for treating and recycling aluminum electrolysis solid waste |
| CN105132950B (en) * | 2015-09-09 | 2017-08-08 | 郑州经纬科技实业有限公司 | The system and method for full graphitized carbon cellulose product is produced with electrolytic aluminium waste cathode carbon block |
| CN106949482A (en) * | 2017-02-28 | 2017-07-14 | 广州拉斯卡工程咨询有限公司 | A kind of continuous incineration treatment method of abraum salt |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2647417Y (en) * | 2003-10-15 | 2004-10-13 | 武汉凯迪电力股份有限公司 | Double-side variable speed multi-circulating fluidized flue gas desulfurization apparatus |
| CN203131855U (en) * | 2013-01-18 | 2013-08-14 | 北京神雾环境能源科技集团股份有限公司 | Powdery solid fuel boiler and dry method purification process system |
| CN203144535U (en) * | 2013-03-26 | 2013-08-21 | 郑州经纬科技实业有限公司 | Heating method electrolyte recycling system for aluminum electrolysis carbon residue |
| CN203731438U (en) * | 2014-03-12 | 2014-07-23 | 郑州经纬科技实业有限公司 | Resourceful treatment system for electrolytic aluminium waste cathode blocks |
-
2014
- 2014-03-12 CN CN201410089371.1A patent/CN103851632B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103851632A (en) | 2014-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105132950B (en) | The system and method for full graphitized carbon cellulose product is produced with electrolytic aluminium waste cathode carbon block | |
| CN103851632B (en) | Electrolytic aluminium waste cathode carbon block recycling treatment system and processing method | |
| CN102912117B (en) | Double-calcination process of sulfuric acid and rare earth concentrate rotary kiln calcination device | |
| CN203731438U (en) | Resourceful treatment system for electrolytic aluminium waste cathode blocks | |
| CN106247340A (en) | A kind of processing method and processing device of electrolytic aluminium carbon slag | |
| CN105603459B (en) | Rare Earth Electrolysis flue gas purification system and method | |
| CN105385844B (en) | One kind roasting defluorinate device and technique | |
| CN107460307A (en) | A kind of high-iron bauxite suspension roasting utilization system and method | |
| CN205079246U (en) | Device is used multipurposely to rice husk carbomorphism tail gas | |
| CN208545315U (en) | The system of cement kiln synergic processing waste slag of electrolytic aluminium coproduction double-quick cement | |
| WO2022042632A1 (en) | System for comprehensive recovery of metal resources in fly ash by molten salt electrolysis | |
| WO2021190026A1 (en) | System for capturing semi-volatile heavy metal in zinc-containing solid waste by means of high-temperature separation in cooperation with ammonium complexing | |
| CN201028540Y (en) | Selective volatilization roasting furnace for waste zinc-manganese battery | |
| WO2020124655A1 (en) | Process for preparing sulfur by means of sulfate/nitrate iron-carbon reduction and recovering desulfurization/denitrification agent | |
| CN107364880B (en) | Method and system for recycling fluorine from electrolytic aluminum waste slot liners | |
| CN102530897A (en) | Method for preparing yellow phosphorus by utilizing multi-electrode phosphorus preparation electric furnace | |
| CN105600791A (en) | Construction waste comprehensive utilization method and device | |
| CN101245416B (en) | Magnesium refining method with vertical kiln vertical pot silicon heat reduction | |
| CN202420148U (en) | Rotary kiln for reaction of extracting lithium from lepidolite | |
| CN210321183U (en) | Waste cathode ultrahigh temperature purification furnace | |
| CN102817046A (en) | Method for treating volatile smoke gas of aluminum electrolysis cell | |
| CN208275171U (en) | A kind of carbon calciner flue tail gas dust-extraction unit with turbulence dust catcher | |
| CN208389780U (en) | A kind of electroslag refining furnace flue gas fluoride removal purification system | |
| CN201250263Y (en) | Iron ore concentrate producing device by reducing baking of sulphuric acid cinder fluidized bed roaster | |
| CN206184188U (en) | Utilize device of desulfurization by -product sodium sulphate in production of concentrated regenerated lead of flue gas waste heat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 450000 No.1, floor 1, unit 1, building Y11, No.11, Changchun Road, high tech Zone, Zhengzhou City, Henan Province Patentee after: Zhengzhou Jingwei Technology Industrial Co.,Ltd. Address before: 450001 11 Changchun Road, Zhengzhou high tech Development Zone, Henan Patentee before: ZHENGZHOU JINGWEI TECHNOLOGY INDUSTRY Co.,Ltd. |
|
| CP03 | Change of name, title or address |