CN109092863A - Quadratic aluminum dust resource utilization utilizes the device and technique for producing refining slag - Google Patents
Quadratic aluminum dust resource utilization utilizes the device and technique for producing refining slag Download PDFInfo
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- CN109092863A CN109092863A CN201811068206.2A CN201811068206A CN109092863A CN 109092863 A CN109092863 A CN 109092863A CN 201811068206 A CN201811068206 A CN 201811068206A CN 109092863 A CN109092863 A CN 109092863A
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- Prior art keywords
- jaw crusher
- quadratic aluminum
- refining slag
- aluminum dust
- dust
- Prior art date
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- 239000000428 dust Substances 0.000 title claims abstract description 87
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 73
- 239000002893 slag Substances 0.000 title claims abstract description 47
- 238000007670 refining Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012216 screening Methods 0.000 claims abstract description 37
- 238000001354 calcination Methods 0.000 claims abstract description 32
- 239000000446 fuel Substances 0.000 claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 claims abstract description 28
- 238000012545 processing Methods 0.000 claims abstract description 28
- 238000012856 packing Methods 0.000 claims abstract description 26
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 68
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 60
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 48
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 42
- 239000007921 spray Substances 0.000 claims description 34
- 239000007789 gas Substances 0.000 claims description 33
- 235000019738 Limestone Nutrition 0.000 claims description 30
- 239000006028 limestone Substances 0.000 claims description 30
- 239000000395 magnesium oxide Substances 0.000 claims description 29
- 239000000377 silicon dioxide Substances 0.000 claims description 24
- 239000000292 calcium oxide Substances 0.000 claims description 23
- 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
- 229910052681 coesite Inorganic materials 0.000 claims description 22
- 229910052906 cristobalite Inorganic materials 0.000 claims description 22
- 229910052682 stishovite Inorganic materials 0.000 claims description 22
- 229910052905 tridymite Inorganic materials 0.000 claims description 22
- 239000003345 natural gas Substances 0.000 claims description 21
- 239000012535 impurity Substances 0.000 claims description 16
- 229910052593 corundum Inorganic materials 0.000 claims description 15
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 15
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 14
- 238000000227 grinding Methods 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 9
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 6
- 239000003513 alkali Substances 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 239000011449 brick Substances 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 1
- 239000003546 flue gas Substances 0.000 claims 1
- 238000004064 recycling Methods 0.000 abstract description 12
- 239000002699 waste material Substances 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 39
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 20
- 239000004411 aluminium Substances 0.000 description 18
- 239000000498 cooling water Substances 0.000 description 6
- 238000000498 ball milling Methods 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910017083 AlN Inorganic materials 0.000 description 1
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 229910000960 colored gold Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 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
- 230000007423 decrease Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- -1 hydrogen Calcium oxide Chemical class 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/10—Combinations of devices covered by groups B01D45/00, B01D46/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/0007—Preliminary treatment of ores or scrap or any other metal source
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B21/00—Obtaining aluminium
- C22B21/0038—Obtaining aluminium by other processes
- C22B21/0069—Obtaining aluminium by other processes from scrap, skimmings or any secondary source aluminium, e.g. recovery of alloy constituents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention belongs to Quadratic aluminum dust recovery technology fields, are related to the device and technique of a kind of Quadratic aluminum dust resource utilization utilization production refining slag.The device includes feedstock processing system, fecula calcination system, clinker system of processing and exhaust treatment system, the feedstock processing system includes the first jaw crusher, vertical fine cracker and ball mill, the fecula calcination system includes rotary kiln, fuel tube and grate-cooler, the clinker system of processing includes the second jaw crusher, turn round screening machine and packing machine, first jaw crusher, vertical fine cracker, ball mill, grate-cooler, second jaw crusher, revolution screening machine passes through pipeline with packing machine and connects sack cleaner, the offgas outlet of the rotary kiln is connected to exhaust treatment system by pipeline.Present invention process prepares refining slag using the useful component in Quadratic aluminum dust, and simple process reduces the generation of danger wastes, realizes recycling, the innoxious and benefit of Quadratic aluminum dust.
Description
Technical field
The invention belongs to Quadratic aluminum dust recovery technology fields, are related to a kind of Quadratic aluminum dust resource utilization utilization production refining
The device and technique of slag.
Background technique
Aluminium ash, also referred to as aluminium slag ash or aluminium slag, are the generated wastes in primary and secondary aluminum i ndustry, and divided
For secondary aluminium ash and Quadratic aluminum dust.Containing many directly or indirectly environmentally hazardous element or compounds in aluminium ash, if by it
Directly landfill can cause to seriously threaten to environment.In " the National Hazard waste register " especially implemented in 2016, there will be coloured gold
The aluminium ash for belonging to aluminum smelting technology discharge is classified as toxicity risk waste and flammability hazard waste, thus aluminium ash especially Quadratic aluminum dust the problem of
Arrived non-process can not stage.
Aluminium ash composition is slightly changed because the raw material of each production technology and operating condition are different, but usually all contains metal
Aluminium, the oxide of aluminium, nitride and carbide, other metal oxides (such as silica, magnesia).The oxygen of one secondary aluminium ash
Change the content of aluminium generally 43% ~ 75%, the content of silica generally 5% ~ 20%, has economic value, pay attention to for enterprise and
Recovery processing.Numerous studies are carried out about secondary aluminium ash recycling and have had using work, such as aluminium ash recycling metallic aluminium, recycling
With salinity, recycling aluminium oxide, production cement, synthesized polymer aluminium chloride, produce Brown Alundum, prepare refractory material, be used as desulfurizing agent
Deng.And Quadratic aluminum dust mentions the residue after aluminium as a secondary aluminium ash, main component is aluminium oxide and AlN, and aluminum content generally exists
5% or less, it is difficult to recycle, influence the sustainable development of enterprise.
Summary of the invention
The device and technique for producing refining slag are utilized the purpose of the present invention is to provide a kind of Quadratic aluminum dust resource utilization,
Refining slag is prepared using the useful component in Quadratic aluminum dust, simple process reduces the generation of danger wastes, realizes secondary
Recycling, the innoxious and benefit of aluminium ash.
To achieve the above object, the invention adopts the following technical scheme:
The present invention provides a kind of device of Quadratic aluminum dust resource utilization utilization production refining slag, including feedstock processing system, life
Powder calcination system, clinker system of processing and exhaust treatment system,
The feedstock processing system includes the first jaw crusher, vertical fine cracker and ball mill, first jaw crusher
Discharge port be connected with the feed inlet of vertical fine cracker, the discharge port of the vertical fine cracker passes through belt type conveyer connected ball
The feed inlet of grinding machine；
The fecula calcination system includes rotary kiln, fuel tube and grate-cooler, the fuel tube connection revolution
The fuel inlet of kiln, the discharge port of the ball mill passes sequentially through screw conveyor, Bucket type chain elevator connects the revolution
The feed inlet of kiln, the discharge port of rotary kiln are connected with the feed inlet of the grate-cooler；
The clinker system of processing includes that the second jaw crusher, revolution screening machine and packing machine, the discharge port of grate-cooler pass through
Belt type conveyer connects the feed inlet of second jaw crusher, and the discharge port of the second jaw crusher is defeated by belt-type
The feed inlet for sending machine to connect the revolution screening machine, the discharge port for turning round screening machine pass through Bucket type chain elevator connection packaging
Machine；
First jaw crusher, vertical fine cracker, ball mill, grate-cooler, the second jaw crusher, revolution screening machine and packet
Installation connects sack cleaner by pipeline；The offgas outlet of the rotary kiln is connected to exhaust treatment system by pipeline.
Further, first jaw crusher, vertical fine cracker, ball mill, the second jaw crusher, revolution screening
Machine and packing machine are placed in confined space, and the confined space is equipped with feeding port, discharge port and suction inlet, the suction inlet
Sack cleaner is connected by pipeline；The confined space is formed by common clay brick masonry, and the inner wall of confined space is coated with
Acoustical cotton.
Further, the exhaust treatment system includes settling spray column, lye pond, NaOH solution circulating pump and chimney, described
Sedimentation spray column is divided into the expansion chamber of lower part and the spray chamber on top by the partition that middle part is arranged, and intersects in the expansion chamber straggly
Multiple baffles are provided with, the lower side of expansion chamber is provided with the first gas inlet, top is provided with the first offgas outlet, lower part
Bottom surface is provided with dust export, and the spray chamber internal upper part is provided with multilayer spray head, and the storage of spray chamber lower part has lye, spray chamber
Middle part one side is provided with the second gas inlet, middle part another side is provided with lye overflow port, top is provided with the second tail gas
Outlet, first offgas outlet are connect by pipeline with the second gas inlet, and the lye overflow port connects alkali by pipeline
The alkali liquor inlet on liquid pool top, the NaOH solution circulating pump connect spray head by pipeline, and second offgas outlet is connected by pipeline
The smoke inlet of cigarette receiving chimney lower part.
Further, the upper half of the baffle is rectangle, lower half is in truncated cone-shaped.
The present invention also provides a kind of Quadratic aluminum dust resource utilizations to utilize the technique of production refining slag, comprising the following steps:
Step 1: by raw limestone be added the first jaw crusher carry out it is rough and torn to partial size be 10 ~ 35mm, it is rough and torn after lime
Stone fall into vertical fine cracker carry out it is fine crushing to partial size be less than 10mm；Lime stone, magnesia and Quadratic aluminum dust after again will be fine crushing according to
Certain proportion, which is added in ball mill, carries out grinding to partial size less than 150 mesh, as fecula；First jaw crusher is stood
The dust that formula fine crusher and ball mill generate is recycled through sack cleaner；
Step 2: fecula obtained in step 1 is sent into rotary kiln and is calcined by Bucket type chain elevator, screw conveyor,
It is sent into grate-cooler later to be cooled down, as clinker；Calcination temperature be 1300 ~ 1375 DEG C, calcination time 2h, calcine used in
Fuel is natural gas, and natural gas is sent into the fuel inlet of rotary kiln by fuel tube with air blower；The grate-cooler produces
Raw dust is recycled through sack cleaner；The tail gas come out from rotary kiln enters exhaust treatment system processing；
Step 3: the clinker that step 2 obtains being sent into the second jaw crusher and be crushed to partial size less than 35mm, is then passed through
Belt type conveyer is sent into revolution screening machine and filters out partial size in the refining slag of 5 ~ 35mm, packs into packing machine；Described second
The dust that jaw crusher, revolution screening machine and packing machine generate is recycled through sack cleaner.
Further, by weight percentage, the group of the lime stone is divided into 53.6% CaO, 0.53% Al2O3、0.8%
MgO, 3.2% SiO2, 0.6% Fe2O3, remaining is impurity, and the sum of all components weight percent is 100%；With weight hundred
Divide than meter, the group of the magnesia is divided into 93.1% MgO, 0.53% Al2O3, 0.28% CaO, 3.2% SiO2, remaining is miscellaneous
Matter, the sum of all components weight percent are 100%；By weight percentage, the group of the Quadratic aluminum dust be divided into 77.2% ~
93.4% Al2O3, 0.81% ~ 1.1% CaO, 1.6% ~ 6.58% MgO, 1.7% ~ 4% SiO2, 1.51% ~ 2.81% Fe2O3,
Remaining is impurity, and the sum of all components weight percent is 100%.
Further, the mass percent of the lime stone, magnesia and Quadratic aluminum dust is (1.17 ~ 1.86): (0 ~ 0.42):
1。
Further, the fecula and the usage ratio of natural gas are 1t:195m3。
Compared with prior art, the beneficial effects of the present invention are:
1. Quadratic aluminum dust resource utilization of the present invention is calcined using the device of production refining slag by feedstock processing system, fecula
System and clinker system of processing prepare refining slag using the useful component in Quadratic aluminum dust, and simple process reduces dangerous waste
The generation of object realizes recycling, the innoxious and benefit of Quadratic aluminum dust；In addition, further comprising vent gas treatment system in device
System and dust-extraction unit so that the dust and pernicious gas that generate in production process are handled reduce environmental pollution.
2. Quadratic aluminum dust resource utilization of the present invention will generate loud noise in the device using production refining slag in production
Equipment be placed in confined space, confined space inner wall coat acoustical cotton, noise can be reduced and outwardly propagated, in addition, equipment
The dust of generation can also concentrate in fixed space, and not outer to dissipate, dust is focused on by sack cleaner；Exhaust treatment system will
Expansion chamber and spray chamber are integrated within one device, while realizing sedimentation dedusting and spray-absorption, can reduce occupation area of equipment；
Tail gas is after sedimentation and spray, it can be achieved that qualified discharge.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the Quadratic aluminum dust resource utilization of the present invention using the device of production refining slag.
Fig. 2 is structure of the Quadratic aluminum dust resource utilization of the present invention using exhaust treatment system in the device of production refining slag
Schematic diagram.
Fig. 3 is process flow chart of the Quadratic aluminum dust resource utilization of the present invention using the technique of production refining slag.
Numbering in the drawing: 1 is the first jaw crusher, and 2 be vertical fine cracker, and 3 be ball mill, and 4 be rotary kiln, and 5 be comb
Cold, 6 be the second jaw crusher, and 7 be revolution screening machine, and 8 be packing machine, and 9 be sack cleaner, and 10 be vent gas treatment system
System, 11 be confined space, and 12 be acoustical cotton, and 101 be sedimentation spray column, and 102 be baffle, and 103 be partition, and 104 be spray head, 105
It is NaOH solution circulating pump for lye pond, 106,107 be chimney, and 108 be the first gas inlet, and 109 be the first offgas outlet, and 110 are
Dust export, 111 be the second gas inlet, and 112 be lye overflow port, and 113 be the second offgas outlet, and 114 be alkali liquor inlet.
Specific embodiment
The following examples are intended to illustrate the invention, but is not used to limit the scope of protection of the present invention.Unless otherwise specified, real
Apply the conventional means that technological means used in example is well known to those skilled in the art.Test method in following embodiments, such as
It is conventional method without special instruction.
Embodiment one
As shown in Figure 1 and 2, a kind of device of Quadratic aluminum dust resource utilization utilization production refining slag, including feedstock processing system,
Fecula calcination system, clinker system of processing and exhaust treatment system 10,
The feedstock processing system includes the first jaw crusher 1, vertical fine cracker 2 and ball mill 3, first jaw crushing
The discharge port of machine 1 is connected with the feed inlet of vertical fine cracker 2, and the discharge port of the vertical fine cracker 2 passes through belt type conveyer
Connect the feed inlet of ball mill 3；
The fecula calcination system includes rotary kiln 4, fuel tube and grate-cooler 5, and the fuel tube connects back to
The fuel inlet of rotary kiln 4, the discharge port of the ball mill 3 pass sequentially through described in screw conveyor, the connection of Bucket type chain elevator
The feed inlet of rotary kiln 4, the discharge port of rotary kiln 4 are connected with the feed inlet of the grate-cooler 5；
The clinker system of processing includes the second jaw crusher 6, revolution screening machine 7 and packing machine 8, the discharge port of grate-cooler 5
The feed inlet of second jaw crusher 6 is connected by belt type conveyer, the discharge port of the second jaw crusher 6 passes through skin
Belt conveyor connects the feed inlet of the revolution screening machine 7, and the discharge port of revolution screening machine 7 is connected by Bucket type chain elevator
Connect packing machine 8；
First jaw crusher 1, vertical fine cracker 2, ball mill 3, grate-cooler 5, the second jaw crusher 6, revolution screening
Machine 7 connects sack cleaner 9 by pipeline with packing machine 8；The offgas outlet of the rotary kiln 4 is connected to tail gas by pipeline
Processing system 10.
First jaw crusher 1, vertical fine cracker 2, ball mill 3, the second jaw crusher 6, revolution 7 and of screening machine
Packing machine 8 is placed in confined space 11, and the confined space 11 is equipped with feeding port, discharge port and suction inlet, the dust suction
Mouth passes through pipeline and connects sack cleaner 9；The confined space 11 is formed by common clay brick masonry, the inner wall of confined space 11
It is coated with acoustical cotton 12.
The exhaust treatment system 10 includes settling spray column 101, lye pond 105, NaOH solution circulating pump 106 and chimney 107,
The sedimentation spray column 101 divides the expansion chamber for lower part and the spray chamber on top, the expansion chamber by the partition 103 that middle part is arranged
Interior intersection has been arranged at random multiple baffles 102, and the upper half of the baffle 102 is rectangle, lower half is in truncated cone-shaped, expansion chamber
Lower side be provided with the first gas inlet 108, top is provided with the first offgas outlet 109, bottom face is provided with dust
Outlet 110, the spray chamber internal upper part are provided with multilayer spray head 104, and the storage of spray chamber lower part has lye (such as sodium hydroxide, hydrogen
Calcium oxide etc.), one side is provided with the second gas inlet 111, middle part another side is provided with lye overflow port at spray chamber middle part
112, top is provided with the second offgas outlet 113, and first offgas outlet 109 is connected by pipeline and the second gas inlet 111
It connects, one end of the second gas inlet 111 extends to inside spray chamber and submerges in lye, and the lye overflow port 112 passes through pipe
Road connects the alkali liquor inlet 114 on lye pond top, and the NaOH solution circulating pump 106 connects spray head 104, second tail by pipeline
Gas outlet 113 connects the smoke inlet of 107 lower part of chimney by pipeline.
The tail gas come out from rotary kiln 4 enters expansion chamber through the first gas inlet 108, and the dust carried secretly in tail gas, which is met, to be handed over
Pitch the baffle 102 that is arranged at random and be blocked decline, the lower part of baffle 102 be on the one hand conducive in truncated cone-shaped blocks dust rising,
On the other hand it is unfavorable for dust to accumulate and fall for a long time on baffle 102；The tail gas come out from the first offgas outlet 109 enters
In lye, the harmful components such as sulfur dioxide, nitride are tentatively sponged by lye, the tail gas of rising further meets the spray of spray head 104
Lye out and further sponged harmful components therein, enter chimney 107 to come out from the second offgas outlet 113,
Qualified discharge.The dust recycled through sack cleaner 9 recycles after measured after ingredient as the raw material for preparing fecula, not outer
Row.
The equipment that loud noise is generated in production is placed in confined space by the present invention, and confined space inner wall coats sound-absorbing
Cotton can reduce noise and outwardly propagate, not outer to dissipate in addition, the dust that equipment generates can also concentrate in fixed space, dust by
Sack cleaner centralized processing；Exhaust treatment system 10 is integrated within one device by expansion chamber and spray chamber, while realizing and sinking
Dedusting and spray-absorption are dropped, occupation area of equipment can be reduced；Tail gas is after sedimentation and spray, it can be achieved that qualified discharge, reduces ring
Border pollution.
As an improvement method can be such that alkali liquid temperature increases because exhaust temperature is higher, sprayed to reduce lye to sedimentation
The corrosion of tower 101 and partition 103 is drenched, therefore cooling water inlet and cooling water outlet can be opened up in spray chamber side wall, connects cooling water
The coiling of the cooling water pipe of entrance and cooling water outlet is placed on partition 103, and cooling water is pumped into from circulating water pool, to reduce lye
Temperature.
Embodiment two
As shown in figure 3, technique of the Quadratic aluminum dust resource utilization using the device of production refining slag, comprising the following steps:
Step 1: by raw limestone be added the first jaw crusher 1 carry out it is rough and torn to partial size be 10 ~ 35mm, it is rough and torn after lime
Stone fall into vertical fine cracker 2 carry out it is fine crushing to partial size be less than 10mm；The lime stone by 1.86t after fine crushing adds with 1t Quadratic aluminum dust again
Enter into ball mill 3 to carry out grinding to partial size less than 150 mesh, as fecula；By weight percentage, the group of lime stone is divided into
53.6% CaO, 0.53% Al2O3, 0.8% MgO, 3.2% SiO2, 0.6% Fe2O3, 0.26% TiO2, 0.48%
H2O, remaining is impurity, and the sum of all components weight percent is 100%；By weight percentage, the component of the Quadratic aluminum dust
For 93% Al2O3, 0.9% CaO, 1.6% MgO, 1.7% SiO2, 1.24% Fe2O3, 0.51% TiO2, 0.26%
H2O, remaining is impurity, and the sum of all components weight percent is 100%.First jaw crusher 1, vertical fine cracker 2 and ball milling
The dust that machine 3 generates is recycled through sack cleaner 9.
Step 2: fecula obtained in step 1 is sent into rotary kiln 4 and is carried out by Bucket type chain elevator, screw conveyor
Calcining is sent into grate-cooler 5 later and is cooled down, as clinker；Calcination temperature is 1300 ~ 1375 DEG C, calcination time 2h, calcining
Fuel used be natural gas, natural gas by fuel tube with air blower be sent into rotary kiln 4 fuel inlet, fecula with
The usage ratio of natural gas is 1t:195m3；The dust that the grate-cooler 5 generates is recycled through sack cleaner 9；Go out from rotary kiln 4
The tail gas come enters the processing of exhaust treatment system 10.
Step 3: the clinker that step 2 obtains being sent into the second jaw crusher 6 and be crushed to partial size less than 35mm, then
Revolution screening machine 7 is sent by belt type conveyer and filters out partial size in the refining slag of 5 ~ 35mm, is packed into packing machine 8.With
Weight percent meter, the content of main component is Al in refining slag2O3 41%~43%、CaO 47%~49%、MgO 3.6%、SiO2
4.6%、H2O 0.31%.The dust that second jaw crusher 6, revolution screening machine 7 and packing machine 8 generate is returned through sack cleaner 9
It receives.Recycling revolution screening machine 7 filters out partial size in 5mm refining slag below, into ball press briquet after enter back into packaging
Machine 8 is packed.
Embodiment three
As shown in figure 3, technique of the Quadratic aluminum dust resource utilization using the device of production refining slag, comprising the following steps:
Step 1: by raw limestone be added the first jaw crusher 1 carry out it is rough and torn to partial size be 10 ~ 35mm, it is rough and torn after lime
Stone fall into vertical fine cracker 2 carry out it is fine crushing to partial size be less than 10mm；The lime stone by 1.17t after fine crushing adds with 1t Quadratic aluminum dust again
Enter into ball mill 3 to carry out grinding to partial size less than 150 mesh, as fecula；By weight percentage, the group of lime stone is divided into
53.6% CaO, 0.53% Al2O3, 0.8% MgO, 3.2% SiO2, 0.6% Fe2O3, 0.26% TiO2, 0.48%
H2O, remaining is impurity, and the sum of all components weight percent is 100%；By weight percentage, the component of the Quadratic aluminum dust
For 77.2% Al2O3, 1.1% CaO, 6.58% MgO, 4% SiO2, 2.81% Fe2O3, 0.97% TiO2, 0.36%
H2O, remaining is impurity, and the sum of all components weight percent is 100%.First jaw crusher 1, vertical fine cracker 2 and ball milling
The dust that machine 3 generates is recycled through sack cleaner 9.
Step 2: fecula obtained in step 1 is sent into rotary kiln 4 and is carried out by Bucket type chain elevator, screw conveyor
Calcining is sent into grate-cooler 5 later and is cooled down, as clinker；Calcination temperature is 1300 ~ 1375 DEG C, calcination time 2h, calcining
Fuel used be natural gas, natural gas by fuel tube with air blower be sent into rotary kiln 4 fuel inlet, fecula with
The usage ratio of natural gas is 1t:195m3；The dust that grate-cooler 5 generates is recycled through sack cleaner 9；It is come out from rotary kiln 4
Tail gas enters the processing of exhaust treatment system 10.
Step 3: the clinker that step 2 obtains being sent into the second jaw crusher 6 and be crushed to partial size less than 35mm, then
Revolution screening machine 7 is sent by belt type conveyer and filters out partial size in the refining slag of 5 ~ 35mm, is packed into packing machine 8.With
Weight percent meter, the content of main component is Al in refining slag2O3 37%~39%、CaO 45%~47%、MgO 4.2%、SiO2
4.8%、H2O 0.3%.The dust that second jaw crusher 6, revolution screening machine 7 and packing machine 8 generate is returned through sack cleaner 9
It receives.Recycling revolution screening machine 7 filters out partial size in 5mm refining slag below, into ball press briquet after enter back into packaging
Machine 8 is packed.
Example IV
As shown in figure 3, technique of the Quadratic aluminum dust resource utilization using the device of production refining slag, comprising the following steps:
Step 1: by raw limestone be added the first jaw crusher 1 carry out it is rough and torn to partial size be 10 ~ 35mm, it is rough and torn after lime
Stone fall into vertical fine cracker 2 carry out it is fine crushing to partial size be less than 10mm；The lime stone by 1.7t after fine crushing adds with 1t Quadratic aluminum dust again
Enter into ball mill 3 to carry out grinding to partial size less than 150 mesh, as fecula；By weight percentage, the group of lime stone is divided into
53.6% CaO, 0.53% Al2O3, 0.8% MgO, 3.2% SiO2, 0.6% Fe2O3, 0.26% TiO2, 0.48%
H2O, remaining is impurity, and the sum of all components weight percent is 100%；By weight percentage, the component of the Quadratic aluminum dust
For 93.4% Al2O3, 0.81% CaO, 2% MgO, 2.1% SiO2, 1.1% Fe2O3, 0.25% TiO2, 0.23%
H2O, remaining is impurity, and the sum of all components weight percent is 100%.First jaw crusher 1, vertical fine cracker 2 and ball milling
The dust that machine 3 generates is recycled through sack cleaner 9.
Step 2: fecula obtained in step 1 is sent into rotary kiln 4 and is carried out by Bucket type chain elevator, screw conveyor
Calcining is sent into grate-cooler 5 later and is cooled down, as clinker；Calcination temperature is 1300 ~ 1375 DEG C, calcination time 2h, calcining
Fuel used be natural gas, natural gas by fuel tube with air blower be sent into rotary kiln 4 fuel inlet, fecula with
The usage ratio of natural gas is 1t:195m3；The dust that grate-cooler 5 generates is recycled through sack cleaner 9；It is come out from rotary kiln 4
Tail gas enters the processing of exhaust treatment system 10.
Step 3: the clinker that step 2 obtains being sent into the second jaw crusher 6 and be crushed to partial size less than 35mm, then
Revolution screening machine 7 is sent by belt type conveyer and filters out partial size in the refining slag of 5 ~ 35mm, is packed into packing machine 8.With
Weight percent meter, the content of main component is Al in refining slag2O3 43%~55%、CaO 36%~39%、MgO 3.0%、SiO2
4.5%、H2O 0.31%.The dust that second jaw crusher 6, revolution screening machine 7 and packing machine 8 generate is returned through sack cleaner 9
It receives.Recycling revolution screening machine 7 filters out partial size in 5mm refining slag below, into ball press briquet after enter back into packaging
Machine 8 is packed.
Embodiment five
As shown in figure 3, technique of the Quadratic aluminum dust resource utilization using the device of production refining slag, comprising the following steps:
Step 1: by raw limestone be added the first jaw crusher 1 carry out it is rough and torn to partial size be 10 ~ 35mm, it is rough and torn after lime
Stone fall into vertical fine cracker 2 carry out it is fine crushing to partial size be less than 10mm；The lime stone by 2.7t after fine crushing adds with 1t Quadratic aluminum dust again
Enter into ball mill 3 to carry out grinding to partial size less than 150 mesh, as fecula；By weight percentage, the group of lime stone is divided into
53.6% CaO, 0.53% Al2O3, 0.8% MgO, 3.2% SiO2, 0.6% Fe2O3, 0.26% TiO2, 0.48%
H2O, remaining is impurity, and the sum of all components weight percent is 100%；By weight percentage, the component of the Quadratic aluminum dust
For 93.4% Al2O3, 0.81% CaO, 2% MgO, 2.1% SiO2, 1.1% Fe2O3, 0.25% TiO2, 0.23%
H2O, remaining is impurity, and the sum of all components weight percent is 100%.First jaw crusher 1, vertical fine cracker 2 and ball milling
The dust that machine 3 generates is recycled through sack cleaner 9.
Step 2: fecula obtained in step 1 is sent into rotary kiln 4 and is carried out by Bucket type chain elevator, screw conveyor
Calcining is sent into grate-cooler 5 later and is cooled down, as clinker；Calcination temperature is 1300 ~ 1375 DEG C, calcination time 2h, calcining
Fuel used be natural gas, natural gas by fuel tube with air blower be sent into rotary kiln 4 fuel inlet, fecula with
The usage ratio of natural gas is 1t:195m3；The dust that grate-cooler 5 generates is recycled through sack cleaner 9；It is come out from rotary kiln 4
Tail gas enters the processing of exhaust treatment system 10.
Step 3: the clinker that step 2 obtains being sent into the second jaw crusher 6 and be crushed to partial size less than 35mm, then
Revolution screening machine 7 is sent by belt type conveyer and filters out partial size in 5 ~ 35mm, is packed into packing machine 8.With weight percent
Than meter, the content of main component is Al in refining slag2O3 35%~37%、CaO 54%~56%、MgO 3.1%、SiO2 3.5%、H2O
0.32%.The dust that second jaw crusher 6, revolution screening machine 7 and packing machine 8 generate is recycled through sack cleaner 9.It recycles back
Turn screening machine 7 and filter out partial size in 5mm refining slag below, into ball press briquet after enter back into the packaging of packing machine 8.
Embodiment six
As shown in figure 3, technique of the Quadratic aluminum dust resource utilization using the device of production refining slag, comprising the following steps:
Step 1: by raw limestone be added the first jaw crusher 1 carry out it is rough and torn to partial size be 10 ~ 35mm, it is rough and torn after lime
Stone fall into vertical fine cracker 2 carry out it is fine crushing to partial size be less than 10mm；Lime stone by 1.36t after fine crushing, 0.42t magnesia and 1t again
Quadratic aluminum dust, which is added in ball mill 3, carries out grinding to partial size less than 150 mesh, as fecula；By weight percentage, lime stone
Group be divided into 53.6% CaO, 0.53% Al2O3, 0.8% MgO, 3.2% SiO2, 0.6% Fe2O3, 0.26% TiO2、
0.48% H2O, remaining is impurity, and the sum of all components weight percent is 100%；By weight percentage, the magnesia
Group is divided into 93.1% MgO, 0.53% Al2O3, 0.28% CaO, 3.2% SiO2, remaining is impurity, all components weight hundred
The sum of score is 100%；By weight percentage, the group of the Quadratic aluminum dust is divided into 93.4% Al2O3, 0.81% CaO, 2%
MgO, 2.1% SiO2, 1.1% Fe2O3, 0.25% TiO2, 0.23% H2O, remaining is impurity, all components weight percent
The sum of be 100%.The dust that first jaw crusher 1, vertical fine cracker 2 and ball mill 3 generate is recycled through sack cleaner 9.
Step 2: fecula obtained in step 1 is sent into rotary kiln 4 and is carried out by Bucket type chain elevator, screw conveyor
Calcining is sent into grate-cooler 5 later and is cooled down, as clinker；Calcination temperature is 1300 ~ 1375 DEG C, calcination time 2h, calcining
Fuel used be natural gas, natural gas by fuel tube with air blower be sent into rotary kiln 4 fuel inlet, fecula with
The usage ratio of natural gas is 1t:195m3；The dust that grate-cooler generates is recycled through sack cleaner 9；It is come out from rotary kiln 4
Tail gas enters the processing of exhaust treatment system 10.
Step 3: the clinker that step 2 obtains being sent into the second jaw crusher 6 and be crushed to partial size less than 35mm, then
Revolution screening machine 7 is sent by belt type conveyer and filters out partial size in the refining slag of 5 ~ 35mm, is packed into packing machine 8.With
Weight percent meter, the content of main component is Al in refining slag2O3 39%~41%、CaO 32%~34%、MgO 17-18.5%、
SiO2 4%、H2O 0.31%.The dust that second jaw crusher 6, revolution screening machine 7 and packing machine 8 generate is through sack cleaner 9
Recycling.Recycling revolution screening machine 7 filters out partial size in 5mm refining slag below, into ball press briquet after enter back into packet
8 packaging of installation.
The embodiment of the above, only presently preferred embodiments of the present invention, is only used to explain the present invention, not limit
The scope of the present invention processed to those of ordinary skill in the art certainly can be according to skill disclosed in this specification
Art content makes other embodiments easily by way of replacing or changing, therefore all made in the principle of the present invention
Changes and improvements etc., should be included in scope of the present invention patent.
Claims (8)
1. a kind of Quadratic aluminum dust resource utilization utilizes the device of production refining slag, which is characterized in that including feedstock processing system,
Fecula calcination system, clinker system of processing and exhaust treatment system,
The feedstock processing system includes the first jaw crusher, vertical fine cracker and ball mill, first jaw crusher
Discharge port be connected with the feed inlet of vertical fine cracker, the discharge port of the vertical fine cracker passes through belt type conveyer connected ball
The feed inlet of grinding machine；
The fecula calcination system includes rotary kiln, fuel tube and grate-cooler, the fuel tube connection revolution
The fuel inlet of kiln, the discharge port of the ball mill passes sequentially through screw conveyor, Bucket type chain elevator connects the revolution
The feed inlet of kiln, the discharge port of rotary kiln are connected with the feed inlet of the grate-cooler；
The clinker system of processing includes that the second jaw crusher, revolution screening machine and packing machine, the discharge port of grate-cooler pass through
Belt type conveyer connects the feed inlet of second jaw crusher, and the discharge port of the second jaw crusher is defeated by belt-type
The feed inlet for sending machine to connect the revolution screening machine, the discharge port for turning round screening machine pass through Bucket type chain elevator connection packaging
Machine；
First jaw crusher, vertical fine cracker, ball mill, grate-cooler, the second jaw crusher, revolution screening machine and packet
Installation connects sack cleaner by pipeline；The offgas outlet of the rotary kiln is connected to exhaust treatment system by pipeline.
2. Quadratic aluminum dust resource utilization according to claim 1 utilizes the device of production refining slag, which is characterized in that institute
State the first jaw crusher, vertical fine cracker, ball mill, the second jaw crusher, revolution screening machine and packing machine be placed in it is close
It closes in space, the confined space is equipped with feeding port, discharge port and suction inlet, and the suction inlet connects pocket type by pipeline and removes
Dirt device；The confined space is formed by common clay brick masonry, and the inner wall of confined space is coated with acoustical cotton.
3. Quadratic aluminum dust resource utilization according to claim 1 utilizes the device of production refining slag, which is characterized in that institute
Stating exhaust treatment system includes that sedimentation spray column, lye pond, NaOH solution circulating pump and chimney, the sedimentation spray column are arranged by middle part
Partition be divided into the expansion chamber of lower part and the spray chamber on top, intersect in the expansion chamber and be arranged at random multiple baffles, settle
The lower side of room is provided with the first gas inlet, top is provided with the first offgas outlet, bottom face is provided with dust export,
The spray chamber internal upper part is provided with multilayer spray head, and the storage of spray chamber lower part has lye, and one side is provided with the in the middle part of spray chamber
Two gas inlets, middle part another side are provided with lye overflow port, top is provided with the second offgas outlet, and first tail gas goes out
Mouth is connect by pipeline with the second gas inlet, and the lye overflow port connects the alkali liquor inlet on lye pond top by pipeline,
The NaOH solution circulating pump connects spray head by pipeline, and second offgas outlet is entered by the flue gas that pipeline connects chimney lower part
Mouthful.
4. Quadratic aluminum dust resource utilization according to claim 3 utilizes the device of production refining slag, which is characterized in that institute
The upper half for stating baffle is rectangle, lower half is in truncated cone-shaped.
5. utilizing the work of the device of production refining slag based on the described in any item Quadratic aluminum dust resource utilizations of claim 1 ~ 4
Skill, which comprises the following steps:
Step 1: by raw limestone be added the first jaw crusher carry out it is rough and torn to partial size be 10 ~ 35mm, it is rough and torn after lime
Stone fall into vertical fine cracker carry out it is fine crushing to partial size be less than 10mm；Lime stone, magnesia and Quadratic aluminum dust after again will be fine crushing according to
Certain proportion, which is added in ball mill, carries out grinding to partial size less than 150 mesh, as fecula；First jaw crusher is stood
The dust that formula fine crusher and ball mill generate is recycled through sack cleaner；
Step 2: fecula obtained in step 1 is sent into rotary kiln and is calcined by Bucket type chain elevator, screw conveyor,
It is sent into grate-cooler later to be cooled down, as clinker；Calcination temperature be 1300 ~ 1375 DEG C, calcination time 2h, calcine used in
Fuel is natural gas, and natural gas is sent into the fuel inlet of rotary kiln by fuel tube with air blower；The grate-cooler produces
Raw dust is recycled through sack cleaner；The tail gas come out from rotary kiln enters exhaust treatment system processing；
Step 3: the clinker that step 2 obtains being sent into the second jaw crusher and be crushed to partial size less than 35mm, is then passed through
Belt type conveyer is sent into revolution screening machine and filters out partial size in the refining slag of 5 ~ 35mm, packs into packing machine；Described second
The dust that jaw crusher, revolution screening machine and packing machine generate is recycled through sack cleaner.
6. Quadratic aluminum dust resource utilization according to claim 5 utilizes the technique of production refining slag, which is characterized in that with
Weight percent meter, the group of the lime stone are divided into 53.6% CaO, 0.53% Al2O3, 0.8% MgO, 3.2% SiO2、
0.6% Fe2O3, remaining is impurity, and the sum of all components weight percent is 100%；By weight percentage, the magnesia
Group is divided into 93.1% MgO, 0.53% Al2O3, 0.28% CaO, 3.2% SiO2, remaining is impurity, all components weight hundred
The sum of score is 100%；By weight percentage, the group of the Quadratic aluminum dust is divided into 77.2% ~ 93.4% Al2O3、0.81%~
1.1% CaO, 1.6% ~ 6.58% MgO, 1.7% ~ 4% SiO2, 1.51% ~ 2.81% Fe2O3, remaining is impurity, all components
The sum of weight percent is 100%.
7. Quadratic aluminum dust resource utilization according to claim 5 utilizes the technique of production refining slag, which is characterized in that institute
The mass percent for stating lime stone, magnesia and Quadratic aluminum dust is (1.17 ~ 1.86): (0 ~ 0.42): 1.
8. Quadratic aluminum dust resource utilization according to claim 5 utilizes the technique of production refining slag, which is characterized in that institute
The usage ratio for stating fecula and natural gas is 1t:195m3。
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| CN110846514A (en) * | 2019-12-06 | 2020-02-28 | 隆达铝业（顺平）有限公司 | High-efficiency recovery method for secondary aluminum |
| CN111235354A (en) * | 2020-04-03 | 2020-06-05 | 北京璞域环保科技有限公司 | Production process of LF multifunctional deoxidation submerged arc slag |
| CN111704390A (en) * | 2020-06-28 | 2020-09-25 | 潮州市泥香陶瓷新材料有限公司 | Preparation device and preparation method of ceramic moisture-preserving coating |
| CN113106261A (en) * | 2021-03-16 | 2021-07-13 | 江苏海光金属有限公司 | Production process for processing secondary aluminum ash into aluminum-based material |
| CN114538489A (en) * | 2022-03-18 | 2022-05-27 | 四川轻化工大学 | Method and system for preparing efficient powdery accelerator from aluminum ash |
| CN114749470A (en) * | 2022-04-24 | 2022-07-15 | 安徽永茂泰环保科技有限公司 | Resource utilization method of secondary aluminum ash |
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