CN103849894A - Resourceful treatment system and treatment method of aluminum ashes - Google Patents
Resourceful treatment system and treatment method of aluminum ashes Download PDFInfo
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- CN103849894A CN103849894A CN201410089405.7A CN201410089405A CN103849894A CN 103849894 A CN103849894 A CN 103849894A CN 201410089405 A CN201410089405 A CN 201410089405A CN 103849894 A CN103849894 A CN 103849894A
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 219
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 216
- 239000002956 ash Substances 0.000 title claims abstract description 143
- 238000000034 method Methods 0.000 title abstract description 26
- 235000002918 Fraxinus excelsior Nutrition 0.000 title abstract 9
- 239000011230 binding agent Substances 0.000 claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 210000000078 claw Anatomy 0.000 claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 238000005245 sintering Methods 0.000 claims abstract description 4
- 238000004513 sizing Methods 0.000 claims abstract description 4
- 239000004411 aluminium Substances 0.000 claims description 203
- 230000007246 mechanism Effects 0.000 claims description 26
- 238000004064 recycling Methods 0.000 claims description 26
- 239000000428 dust Substances 0.000 claims description 25
- 239000010881 fly ash Substances 0.000 claims description 19
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 16
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 8
- CEGOLXSVJUTHNZ-UHFFFAOYSA-K aluminium tristearate Chemical compound [Al+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CEGOLXSVJUTHNZ-UHFFFAOYSA-K 0.000 claims description 8
- 229940063655 aluminum stearate Drugs 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 8
- 239000000292 calcium oxide Substances 0.000 claims description 8
- 235000012255 calcium oxide Nutrition 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 8
- 229910052748 manganese Inorganic materials 0.000 claims description 8
- 239000011572 manganese Substances 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000003672 processing method Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 16
- 239000002699 waste material Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 230000008929 regeneration Effects 0.000 abstract 1
- 238000011069 regeneration method Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 235000010210 aluminium Nutrition 0.000 description 168
- 238000004519 manufacturing process Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 150000001398 aluminium Chemical class 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 150000004673 fluoride salts Chemical class 0.000 description 2
- 238000007499 fusion processing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- CTWSQXCNHFQOOK-UHFFFAOYSA-M [F-].[Al+3].[Na+].[O-2].[Al+3] Chemical compound [F-].[Al+3].[Na+].[O-2].[Al+3] CTWSQXCNHFQOOK-UHFFFAOYSA-M 0.000 description 1
- 239000000274 aluminium melt Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000002362 mulch Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- -1 sodium aluminum fluoride Chemical compound 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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Abstract
The invention discloses resourceful treatment system and treatment method of aluminum ashes, and aims at solving the technical problems that the aluminum ashes in the prior art are low in recovery rate, complicated in process, and easy to pollute environment. The system comprises an aluminum ash separation unit, a burdening unit, a molding unit and a baking unit. The method comprises the following steps: adding hot aluminum ashes to a hot aluminum ash separator; separating out metallic aluminum and low-aluminum ashes; evenly mixing and stirring the obtained low-aluminum ashes and a binder according to the mass ratio of 10:1 to 10:2; pressing the mixed materials into an anode steel claw protection ring blank and demolding; sintering and sizing the obtained anode steel claw protection ring blank and then obtaining an anode steel claw protection ring. By adopting the resourceful treatment system and treatment method, integrated treatment of the aluminum ashes can be achieved, the treating processes of the aluminum ashes are simplified, the resourceful treatment system and treatment method are simple and convenient to operate, energy-saving and environmentally friendly, waste emission can be greatly reduced, regeneration and cyclic utilization of resources are fully achieved, and the problem of innocent treatment of the aluminum ashes is solved.
Description
Technical field
The present invention relates to the solid waste processing technology field in Aluminum Electrolysis Production process, be specifically related to a kind of aluminium ash recycling treatment system and treatment process.
Background technology
Electrolytic aluminum belongs to important light non-ferrous metal industry, and aluminium is as important basic industry starting material, its people
economicalin occupy very important status.Aluminium obtains by Hall-Ai Lu sodium aluminum fluoride-aluminum oxide fused salt electrolysis method, using sodium aluminum fluoride as main fluoride salt as
flux, aluminum oxide forms heterogeneous ionogen for melting matter
system, using carbon body as anode, aluminium liquid, as negative electrode, passes into after powerful direct current, at 950 ℃～970 ℃, carries out electrochemical reaction on the two poles of the earth in electrolyzer.Aluminium liquid can generate a kind of scum silica frost in casting furnace melting, be mainly derived from molten inclusion, the additive that floats on aluminium melt surface in fusion process and the material that carries out physics, chemical reaction generation with additive, be loose grey scoriform, be called as aluminium ash.The aluminium ash producing in this process contains more than 50% metallic aluminium conventionally, is called as high alumina aluminium ash; In high alumina aluminium ash, be not suitable for reclaim part and removal process in the aluminium slag that produces be called low aluminium aluminium ash, in low aluminium aluminium ash, the content of metallic aluminium accounts for 12%～20%.Although aluminium ash is a kind of scum silica frost, and fusion process is had to important effect, be mainly to adsorb from the impurity such as aluminum oxide, fluoride salt in electrolytic aluminium liquid, aluminium ash can also play protection molten aluminium simultaneously, prevents the effects such as aluminum oxidation.But blocked up aluminium ash can hinder hot conduction, is unfavorable for melting, so aluminium ash will periodically claw from smelting furnace when melting.
Every production and one ton of aluminium of casting, approximately produce the aluminium ash of 20～30kg, and within 2013, China's primary aluminum output reaches 2,000 ten thousand tons, accounts for 45% of global ultimate production, produces approximately 200,000 tons of aluminium ash quantity dischargeds.Metallic aluminium is extracted from aluminium ash, can realize the resource utilization of aluminium ash and recycle, reduce environmental pollution.The conventional method of extracting metallic aluminium from aluminium ash mainly contains milling process, revolution oven process, cold ash pulverizing partition method, the artificial ash etc. of frying at present, these methods can reclaim a part of metallic aluminium in aluminium ash, but the rate of recovery is lower, metallic aluminium waste is large, and its remaining aluminium ash also will be processed through additive method, whole treating processes time length, complex process, needing in a large number manually, also has certain damaging influence to environment.Therefore, studying a kind of aluminium ash recycling treatment process efficient, energy-saving and environmental protection is that the utmost point is necessary.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of recovery utilization rate grey recycling treatment system of aluminium high, easy and simple to handle and energy-conserving and environment-protective and treatment process.
For solving the problems of the technologies described above, aluminium ash recycling treatment system of the present invention comprises aluminium ash separating unit, batching unit, forming unit and cures unit, described batching unit comprises low aluminium aluminium ash feed bin, binding agent feed bin and stirred silo, on described low aluminium aluminium ash feed bin, binding agent feed bin and stirred silo, be provided with weighing device and baiting valve, the discharge port of described low aluminium aluminium ash feed bin and binding agent feed bin respectively with the corresponding connection of opening for feed of described stirred silo, in described stirred silo, be provided with whipping appts;
Described aluminium ash separating unit comprises hot aluminium ash separator and feed mechanism, and the ash discharging hole of described hot aluminium ash separator is communicated with described low aluminium aluminium ash feed bin by described feed mechanism;
Described forming unit comprises feed mechanism, compacting mould emptier and transfer mechanism; the corresponding connection of opening for feed of the connection corresponding to the discharge port of described stirred silo of the feed end of described feed mechanism, discharge end and described compacting mould emptier, described compacting mould emptier cures with described that unit is corresponding to be connected by described transfer mechanism.
Preferably; this system also comprises dust removing units; described dust removing units comprises fly-ash separator, induced draft fan and blowing spiral; above described hot aluminium ash separator, low aluminium aluminium ash feed bin, binding agent feed bin, stirred silo and compacting mould emptier, be respectively equipped with dust hood; the dust collection pipeline of described fly-ash separator is connected with described dust hood respectively; described induced draft fan is arranged at the pure qi (oxygen) exit of described fly-ash separator, and described blowing spiral is arranged at the dust discharge mouth of described fly-ash separator.
Preferably, described fly-ash separator is the long bag dust collector of action of low-voltage pulse.
Preferably, described in, curing unit is baking furnace.
Preferably, described aluminium ash recycling treatment system also comprises PLC controller, the input terminus of described PLC controller is connected with the weighing device on stirred silo with described low aluminium aluminium ash feed bin, binding agent feed bin respectively, and its output terminal is connected with the baiting valve of described low aluminium aluminium ash feed bin, binding agent feed bin and stirred silo respectively.
Adopt the beneficial effect of above-mentioned aluminium ash recycling treatment system to be, can realize the close-coupled processing of aluminium ash, simplify the treating processes of aluminium ash, easy and simple to handle, energy-conserving and environment-protective; Production process is clean, does not produce the secondary pollutants such as waste water,waste gas and industrial residue, has solved a harmless treatment difficult problem for aluminium ash; When the anode steel claw protection ring of being manufactured by low aluminium aluminium ash returns to electrolyzer use, be not only conducive to extend the replacement cycle of anode steel jaw, can reduce the aluminum oxide consumption of electrolyzer simultaneously; Can realize the recycle of resource, allow low aluminium aluminium ash " turn waste into wealth ", further reduce the production cost of electrolytic aluminum industry.
Aluminium ash recycling processing method of the present invention, comprises the following steps:
(1) the hot aluminium ash cleaning out from casting furnace is joined in the hot aluminium ash separator in described aluminium ash recycling treatment system, obtain isolated metallic aluminium and low aluminium aluminium ash, the low aluminium aluminium ash of gained is delivered to described low aluminium aluminium ash feed bin;
(2) open the baiting valve of described low aluminium aluminium ash feed bin and described binding agent feed bin, low aluminium aluminium ash and binding agent are joined in described stirred silo to mixing and stirring by the mass ratio of 10:1～10:2;
(3) start described feed mechanism, the mixture of step (2) gained is delivered in the compacting mould emptier of described forming unit, be pressed into anode steel claw protection ring blank the demoulding;
(4) the anode steel claw protection ring blank of step (3) gained is delivered to and cures unit sintering sizing, obtain finished product anode steel claw protection ring, the temperature-rise period that wherein cures unit is as follows: the temperature rise rate of 20 ℃～100 ℃ is 3.2 ℃/h; The temperature rise rate of 100 ℃～200 ℃ is 4 ℃/h; The temperature rise rate of 200 ℃～350 ℃ is 7.5 ℃/h; The temperature rise rate of 350 ℃～550 ℃ is 13.3 ℃/h; The temperature rise rate of 550 ℃～850 ℃ is 20 ℃/h.
The described binding agent of step (2) is made up of aluminum stearate, high manganese cement and unslaked lime, and wherein the shared mass percent of each component is: aluminum stearate 35%～45%, high manganese cement 35%～45%, unslaked lime 18%～25%.
Adopt the beneficial effect of aforesaid method to be, most of metallic aluminium in aluminium ash can be extracted, fully realize resource recovery, recycle, brings reality, considerable economic benefit to enterprise; Make anode steel claw protection ring with remaining low aluminium aluminium ash, can reach the object that reduces solid waste discharge, turns waste into wealth; When the anode steel claw protection ring of being manufactured by low aluminium aluminium ash returns to electrolyzer use, be not only conducive to extend the replacement cycle of anode steel jaw, can reduce the aluminum oxide consumption of electrolyzer simultaneously, further reduce production costs; Whole aluminium ash treating processes is carried out cleaner production, and energy-conserving and environment-protective, can significantly reduce waste discharge, reach " zero release " of aluminium ash, avoid contaminate environment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of aluminium ash recycling treatment system of the present invention.
Wherein, 1 is low aluminium aluminium ash feed bin; 2 is binding agent feed bin; 3 is stirred silo; 4 is hot aluminium ash separator; 5 is feed mechanism; 6 is compacting mould emptier; 7 is transfer mechanism; 8 is fly-ash separator; 9 is induced draft fan; 10 is blowing spiral; 11 is baking furnace.
Embodiment
The following examples are just used for describing in detail the present invention, and limit the scope of the invention never in any form.
Embodiment 1: a kind of aluminium ash recycling treatment system, as shown in Figure 1, comprise aluminium ash separating unit, batching unit, forming unit and cure unit, described batching unit comprises low aluminium aluminium ash feed bin 1, binding agent feed bin 2 and stirred silo 3, on described low aluminium aluminium ash feed bin 1, binding agent feed bin 2 and stirred silo 3, be provided with weighing device and baiting valve, the discharge port of described low aluminium aluminium ash feed bin 1 and binding agent feed bin 2 respectively with the corresponding connection of opening for feed of described stirred silo 3, in described stirred silo 3, be provided with whipping appts; Described aluminium ash separating unit comprises hot aluminium ash separator 4 and feed mechanism, and the ash discharging hole of described hot aluminium ash separator 4 is connected with described low aluminium aluminium ash feed bin 1 by described feed mechanism; Described forming unit comprises feed mechanism 5, compacting mould emptier 6 and transfer mechanism 7; the corresponding connection of opening for feed of the corresponding connection of discharge port of the feed end of described feed mechanism 5 and described stirred silo 3, discharge end and described compacting mould emptier 6, described compacting mould emptier 6 cures with described that unit is corresponding to be connected by described transfer mechanism 7.
This system also comprises dust removing units; described dust removing units comprises fly-ash separator 8, induced draft fan 9 and blowing spiral 10; above described hot aluminium ash separator 4, low aluminium aluminium ash feed bin 1, binding agent feed bin 2, stirred silo 3 and compacting mould emptier 6, be respectively equipped with dust hood; the dust collection pipeline of described fly-ash separator 8 is connected with described dust hood respectively; described induced draft fan 9 is arranged at the pure qi (oxygen) exit of described fly-ash separator 8, and described blowing spiral 10 is arranged at the dust discharge mouth of described fly-ash separator 8.Described fly-ash separator 8 is the long bag dust collector of action of low-voltage pulse, described in to cure unit be baking furnace 11.
Described aluminium ash recycling treatment system also comprises PLC controller, and the input terminus of described PLC controller is connected with the weighing device on stirred silo 3 with described low aluminium aluminium ash feed bin 1, binding agent feed bin 2 respectively, and this weighing device is electronic measurement weighing apparatus; The output terminal of described PLC controller is connected with the baiting valve of stirred silo 3 with described low aluminium aluminium ash feed bin 1, binding agent feed bin 2 respectively.Adopt this PLC controller can realize automatic mixing, automatic discharging and the stirring of low aluminium aluminium ash and binding agent, be conducive to simplify the operation course, reduce labour intensity.
The mode of operation of aluminium ash recycling treatment system of the present invention is as follows: first the hot aluminium ash cleaning out from casting furnace is sent in hot aluminium ash separator 4, in hot aluminium ash separator, there is height-adjustable whipping appts, sink gradually to container bottom formation molten bath through stirring the metallic aluminium being mingled with, low aluminium aluminium ash is stayed top, molten bath, under the effect of stirring, the low aluminium aluminium ash from container ash output opening of portion is discharged, and aluminium liquid is discharged direct pouring from the tapping hole of container bottom and become aluminium ingot.The low aluminium aluminium ash of discharging enters low aluminium aluminium ash feed bin 1 by feed mechanism; low aluminium aluminium ash and binding agent blowing by a certain percentage; enter stirred silo 3 and carry out mix and blend; mixed material is delivered in compacting mould emptier 6 by feed mechanism 5; by the specification requirement of corresponding anode steel claw protection ring, this material is suppressed; and automatic demoulding; obtain the anode steel claw protection ring blank of compression moulding; this blank is delivered in the baking furnace 11 that cures unit and dries via transfer mechanism 7, finally obtains finished product anode steel claw protection ring.
In system work process, open fly-ash separator, by being arranged on the dust hood of hot aluminium ash separator, low aluminium aluminium ash feed bin, binding agent feed bin and stirred silo top in described aluminium ash recycling treatment system, can timely the dust producing in system work process be collected in fly-ash separator, fly-ash separator emits purified gas, the dust of collecting is recovered utilization, avoid producing waste gas and dust pollution, also can keep clean production environment.
Embodiment 2: a kind of aluminium ash recycling processing method that adopts this aluminium ash recycling treatment system, comprises the following steps:
(1) the hot aluminium ash cleaning out from casting furnace is joined in described hot aluminium ash separator, obtain isolated metallic aluminium and low aluminium aluminium ash, the low aluminium aluminium ash of gained is delivered to described low aluminium aluminium ash feed bin;
(2) open the baiting valve of described low aluminium aluminium ash feed bin and described binding agent feed bin, low aluminium aluminium ash and binding agent are joined in described stirred silo to mixing and stirring by the mass ratio of 10:1; Described binding agent is made up of aluminum stearate, high manganese cement and unslaked lime, and wherein the shared mass percent of each component is: aluminum stearate 40%, high manganese cement 40%, unslaked lime 20%;
(3) start described feed mechanism, the mixture of step (2) gained is delivered in the compacting mould emptier of described forming unit, be pressed into anode steel claw protection ring blank the demoulding;
(4) the anode steel claw protection ring blank of step (3) gained is delivered to and cures unit sintering sizing, obtain finished product anode steel claw protection ring, the temperature-rise period that wherein cures unit is as shown in table 1 below.
Embodiment 3: be with the difference of embodiment 2: in step (2), low aluminium aluminium ash mixes by the mass ratio of 10:2 with binding agent; The shared mass percent of the each component of binding agent is: aluminum stearate 32%, high manganese cement 45%, unslaked lime 23%.
Embodiment 4: be with the difference of embodiment 2: in step (2), low aluminium aluminium ash mixes by the mass ratio of 10:1.5 with binding agent; The shared mass percent of the each component of binding agent is: aluminum stearate 38%, high manganese cement 37%, unslaked lime 25%.
Adopt aluminium ash recycling processing method of the present invention, the metallic aluminium up to 80% ± 10% all can be extracted, and these metallic aluminiums can directly melt down use.Compare additive method, greatly improved the extraction yield of metallic aluminium.Make anode protection ring with low aluminium aluminium ash, antianode steel pawl is protected, and both can reach and slow down the corrosion of steel pawl, can reach again the object that reduces solid waste discharge, turns waste into wealth; After the anode protection ring that Bian makes of this aluminium ash; need not pick up fragment, anode protection ring can enter electrolysis flow process with mulch after fragmentation, and its protection effect is better than carbon protective ring; economy aspect is also better than carbon protective ring, is the desirable substitute products of carbon protective ring.
In above embodiment, related plant and instrument if no special instructions, is routine instrument device; Related industrial raw material if no special instructions, is commercially available conventional 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, do not departing under the prerequisite of aim of the present invention, can also change each design parameter in above-described embodiment, form multiple specific embodiments, be common variation range of the present invention, describe in detail no longer one by one at this.
Claims (7)
1. an aluminium ash recycling treatment system, is characterized in that, comprise aluminium ash separating unit, batching unit, forming unit and cure unit,
Described batching unit comprises low aluminium aluminium ash feed bin, binding agent feed bin and stirred silo, on described low aluminium aluminium ash feed bin, binding agent feed bin and stirred silo, be provided with weighing device and baiting valve, the discharge port of described low aluminium aluminium ash feed bin and binding agent feed bin respectively with the corresponding connection of opening for feed of described stirred silo, in described stirred silo, be provided with whipping appts;
Described aluminium ash separating unit comprises hot aluminium ash separator and feed mechanism, and the ash discharging hole of described hot aluminium ash separator is communicated with described low aluminium aluminium ash feed bin by described feed mechanism;
Described forming unit comprises feed mechanism, compacting mould emptier and transfer mechanism; the corresponding connection of opening for feed of the connection corresponding to the discharge port of described stirred silo of the feed end of described feed mechanism, discharge end and described compacting mould emptier, described compacting mould emptier cures with described that unit is corresponding to be connected by described transfer mechanism.
2. aluminium ash recycling treatment system according to claim 1; it is characterized in that; this system also comprises dust removing units; described dust removing units comprises fly-ash separator, induced draft fan and blowing spiral; above described hot aluminium ash separator, low aluminium aluminium ash feed bin, binding agent feed bin, stirred silo and compacting mould emptier, be respectively equipped with dust hood; the dust collection pipeline of described fly-ash separator is connected with described dust hood respectively; described induced draft fan is arranged at the pure qi (oxygen) exit of described fly-ash separator, and described blowing spiral is arranged at the dust discharge mouth of described fly-ash separator.
3. aluminium ash recycling treatment system according to claim 2, is characterized in that, described fly-ash separator is the long bag dust collector of action of low-voltage pulse.
4. aluminium according to claim 1 ash recycling treatment system, is characterized in that, described in to cure unit be baking furnace.
5. aluminium ash recycling treatment system according to claim 1, it is characterized in that, described aluminium ash recycling treatment system also comprises PLC controller, the input terminus of described PLC controller is connected with the weighing device on stirred silo with described low aluminium aluminium ash feed bin, binding agent feed bin respectively, and its output terminal is connected with the baiting valve of described low aluminium aluminium ash feed bin, binding agent feed bin and stirred silo respectively.
6. an aluminium ash recycling processing method, is characterized in that, comprises the following steps:
(1) the hot aluminium ash cleaning out from casting furnace is joined in the hot aluminium ash separator in aluminium ash recycling treatment system claimed in claim 1, obtain isolated metallic aluminium and low aluminium aluminium ash, the low aluminium aluminium ash of gained is delivered to described low aluminium aluminium ash feed bin;
(2) open the baiting valve of described low aluminium aluminium ash feed bin and described binding agent feed bin, low aluminium aluminium ash and binding agent are joined in described stirred silo to mixing and stirring by the mass ratio of 10:1～10:2;
(3) start described feed mechanism, the mixture of step (2) gained is delivered in the compacting mould emptier of described forming unit, be pressed into anode steel claw protection ring blank the demoulding;
(4) the anode steel claw protection ring blank of step (3) gained is delivered to and cures unit sintering sizing, obtain finished product anode steel claw protection ring, the temperature-rise period that wherein cures unit is as follows: the temperature rise rate of 20 ℃～100 ℃ is 3.2 ℃/h; The temperature rise rate of 100 ℃～200 ℃ is 4 ℃/h; The temperature rise rate of 200 ℃～350 ℃ is 7.5 ℃/h; The temperature rise rate of 350 ℃～550 ℃ is 13.3 ℃/h; The temperature rise rate of 550 ℃～850 ℃ is 20 ℃/h.
7. aluminium ash recycling processing method according to claim 5, it is characterized in that, the described binding agent of step (2) is made up of aluminum stearate, high manganese cement and unslaked lime, and wherein the shared mass percent of each component is: aluminum stearate 35%～45%, high manganese cement 35%～45%, unslaked lime 18%～25%.
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| CN105439527A (en) * | 2015-11-27 | 2016-03-30 | 郑州斯迪新材料有限公司 | Catalytic binder and electrolytic aluminum anodic protection ring prepared from same |
| CN106757163A (en) * | 2017-01-18 | 2017-05-31 | 长沙中大时代电子科技发展有限公司 | A kind of electrolytic aluminium anode protection ring and preparation method thereof |
| CN106987867A (en) * | 2017-04-18 | 2017-07-28 | 西宁宏睿机电科技有限公司 | A kind of preparation method for being electrolysed the grey protection ring of aluminum steel pawl aluminium |
| CN107236865A (en) * | 2017-05-19 | 2017-10-10 | 苏州健尼环保设备有限公司 | Environment-friendly type aluminium slag processor |
| CN108276013A (en) * | 2018-03-29 | 2018-07-13 | 李佳星 | A kind of secondary aluminium scrap ash prepares the method and system of aluminium stone |
| CN108714483A (en) * | 2018-06-01 | 2018-10-30 | 上海交通大学 | The cyclic processing device of electrostatic separator aluminum mixture ash particle |
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| CN106757163A (en) * | 2017-01-18 | 2017-05-31 | 长沙中大时代电子科技发展有限公司 | A kind of electrolytic aluminium anode protection ring and preparation method thereof |
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| CN108276013A (en) * | 2018-03-29 | 2018-07-13 | 李佳星 | A kind of secondary aluminium scrap ash prepares the method and system of aluminium stone |
| CN108714483B (en) * | 2018-06-01 | 2024-04-30 | 上海汉邦联航激光科技有限公司 | Circulation processing device for mixed aluminum ash particles of electric separator |
| CN108714483A (en) * | 2018-06-01 | 2018-10-30 | 上海交通大学 | The cyclic processing device of electrostatic separator aluminum mixture ash particle |
| CN109111234A (en) * | 2018-08-10 | 2019-01-01 | 河南弘盛再生资源利用有限公司 | Aluminium scrap ash reprocesses the formula and preparation method that homogeneous refractory raw material is made |
| CN109609763A (en) * | 2018-11-13 | 2019-04-12 | 洛阳新远大冶金成套设备有限公司 | Metal aluminium production process |
| CN111925223A (en) * | 2020-08-22 | 2020-11-13 | 郑州经纬科技实业有限公司 | Preparation method of active magnesium aluminate spinel powder |
| CN111943652A (en) * | 2020-08-22 | 2020-11-17 | 郑州经纬科技实业有限公司 | Preparation method of aluminum-magnesium light refractory material |
| CN111925223B (en) * | 2020-08-22 | 2023-03-24 | 郑州经纬科技实业有限公司 | Preparation method of active magnesium aluminate spinel powder |
| CN111943652B (en) * | 2020-08-22 | 2023-03-24 | 郑州经纬科技实业有限公司 | Preparation method of aluminum-magnesium light refractory material |
| CN111925204A (en) * | 2020-08-22 | 2020-11-13 | 郑州经纬科技实业有限公司 | Preparation method of magnesia-alumina spinel refractory material |
| CN111960851A (en) * | 2020-08-31 | 2020-11-20 | 郑州经纬科技实业有限公司 | Method for preparing cordierite ceramic filter plate based on aluminum ash raw material |
| CN111960851B (en) * | 2020-08-31 | 2023-03-17 | 郑州经纬科技实业有限公司 | Method for preparing cordierite ceramic filter plate based on aluminum ash raw material |
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