CN106629774A - Method for harmlessly treating aluminum ash - Google Patents

Method for harmlessly treating aluminum ash Download PDF

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Publication number
CN106629774A
CN106629774A CN201611266169.7A CN201611266169A CN106629774A CN 106629774 A CN106629774 A CN 106629774A CN 201611266169 A CN201611266169 A CN 201611266169A CN 106629774 A CN106629774 A CN 106629774A
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aluminium
ash
water
ammonia
harmless treatment
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CN201611266169.7A
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CN106629774B (en
Inventor
李克平
李孟方
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Foshan City Kyrgyzstan Lida Aluminum Technology Co Ltd
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Foshan City Kyrgyzstan Lida Aluminum Technology Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/026—Preparation of ammonia from inorganic compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
    • C01F7/30—Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • 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
    • C22B21/0015—Obtaining aluminium by wet processes
    • C22B21/0023—Obtaining aluminium by wet processes from waste materials
    • 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
    • C22B7/006—Wet processes
    • 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
    • C22B7/02—Working-up flue dust
    • 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

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Geology (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a method for harmlessly treating aluminum ash. The method comprises the following steps: (1) performing ball milling on aluminum ash to be treated in a ball mill to flattening metal aluminum in the aluminum ash into flat aluminum, and performing sieving to separate the flat aluminum from the aluminum ash to obtain first aluminum ash; (2) placing the first aluminum ash in a first container provided with an air vent, adding a first part of water into the first container, performing stirring to conduct reaction on aluminum nitride in the first aluminum ash and the water to generate ammonia and aluminum hydroxide, and discharging the ammonia through the air vent, to obtain a material left in the first container after the ammonia is discharged to be recorded as a first material; (3) performing iron removal operation on the first material, to obtain the first material subjected to iron removal to be recorded as a second material; (4) performing centrifugal dehydration operation on the second material, and then performing drying to obtain an oxide-containing mixture. According to the method, harmful substances and flammable and explosive substances in the aluminum ash are safely removed to implement harmless treatment and reclamation of the aluminum ash without heating.

Description

A kind of method of harmless treatment aluminium ash
Technical field
The present invention relates to metallurgy industry Waste Disposal Technology field, more particularly to a kind of side of harmless treatment aluminium ash Method.
Background technology
Aluminium ash is product of the slag produced in electrolytic aluminium or casting aluminium production technology Jing after cooling processing.In the essence of aluminium During refining, many aluminium ashes can be clawed, containing substantial amounts of ammonia and metallic aluminium, ammonia is noxious material, and metallic aluminium is easy for aluminium ash the inside Combustion is explosive.Meanwhile, the aluminium ash quantity that aluminium manufacturer produces is very big, and a large-scale aluminium bar factory can produce the aluminium ash of kiloton for 1 year.Such as Fruit aluminium ash is dealt with improperly, can bring very big harm, mainly includes：
1) there are many very thin metallic aluminiums in aluminium ash, be very easy to cause burning and explode；
2) aluminium ash contains substantial amounts of aluminium nitride (AlN), and meeting water can produce substantial amounts of ammonia NH3, ammonia has very big toxicity, Corrosivity, can damage to human body, animal, plant, can also contaminated soil, water source.
3) also contain substantial amounts of aluminium ion in aluminium ash, if aluminium ion is absorbed into soil by crops, or enter drink With water source, it is likely to endanger the people's absorption for taking in the crops or water source, aluminium ion has the nervous system of human body very big Damage, serious meeting causes senile dementia.
4) there is substantial amounts of fluoride in aluminium ash, chloride, if arbitrarily landfill is stacked, can make the salinization of soil.
At present, it is domestic also without suitable aluminium ash harmless treatment scheme.Once there is enterprise to attempt doing aluminium ash recovery in fact Test.The method of the enterprise is as follows：Add oxidizing substance heating in the outside heating of semienclosed container or toward aluminium ash, make aluminium ash Temperature reaches 800 degree of high temperature, as a result causes the metallic aluminium in aluminium ash to produce blast, causes many people's injures and deaths.That is, high temperature It is dangerous and worthless that the method for aluminium ash is reclaimed in melting.
At present most aluminium processes refinery, uses in factory and stacks, or discharges two methods of factory's steathily.You Lvhui factories Interior aluminium ash has piled up as many as tons up to ten thousand, but suffers from without solution, can only continue extruding and stack, and wastes substantial amounts of factory Room space, also with very big potential safety hazard.
The content of the invention
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of method of harmless treatment aluminium ash, The method eliminates harmful substance and flammable and explosive substance in aluminium ash in the case where not heating, safely, makes aluminium ash harmless Change, while making aluminium ash resource.
The purpose of the present invention employs the following technical solutions realization：
A kind of method of harmless treatment aluminium ash, comprises the following steps：
1) pending aluminium ash is taken, in being placed in ball mill, ball milling, the metallic aluminium in aluminium ash is crushed to form flat aluminium； Then sieve, flat aluminium is separated from aluminium ash, obtain the first aluminium ash；
2) the first aluminium ash is placed in the first container, first container is provided with exhaust outlet；Hold toward described first Part I water, stirring, the aluminium nitride in the first aluminium ash is added to pass through with water reaction, generation ammonia and aluminium hydroxide, ammonia in device The exhaust outlet is discharged；After ammonia is discharged, remaining material is designated as first material in the first container；
3) first material is taken, is carried out except iron is operated, except the first material after iron is designated as second material；
4) centrifugal dehydration operation is carried out to the second material, then, is dried, obtain mixed containing aluminum oxide and silica Compound.
Preferably, in step 2) and step 3) between, also including step 2-1), after ammonia is discharged completely, again toward described Part II water is added in first container, then ball milling, remaining metallic aluminium in the first aluminium ash is fully reacted with water, form hydrogen Aluminum oxide.
Preferably, in step 1) in, during ball milling, until metallic aluminium is crushed to form flat aluminium, and the mesh of flat aluminium Number is more than till 100 mesh.That is, being milled to metallic aluminium is collapsed into sheet, and sheet metal aluminium is when sieving, and can stay in More than 100 eye mesh screens, and unclassified stores can be by till screen cloth.
Preferably, in step 2) in, the weight ratio of Part I water and the first aluminium ash is (1.5-2.5)：1；Add first After the water of part, stirring, in the water not till effervescent.
Preferably, in step 2) in, the weight ratio of Part I water and the first aluminium ash is 2：1.
Preferably, in step 2) in, ammonia is extracted out by air exhauster from the exhaust outlet, and the ammonia of extraction passes through hydrochloric acid Or sulfuric acid is absorbed.
Preferably, in step 2) in, ammonia is extracted out by air exhauster from the exhaust outlet, and the ammonia of extraction is by spray Tower is absorbed.
Preferably, in step 2-1) in, Part II water is added, until in the first container, the weight of water and the first aluminium ash Than for (3-5)：Till 1.
Preferably, in step 2-1) in, Part II water is added, until in the first container, the weight of water and the first aluminium ash Than for 4：Till 1.
Preferably, in step 3) in, carried out except iron using magnetic deironing machine.
Compared to existing technology, the beneficial effects of the present invention is：
(1) method of harmless treatment aluminium ash provided by the present invention, under conditions of it need not heat, can return safely The material such as metallic aluminium and aluminium nitride is received, eliminates that aluminium ash is inflammable and explosive, and meet the danger that the water capacity is also easy to produce poisonous ammonia, make aluminium Ash is innoxious, while making aluminium ash resource, processing safety is high, low cost.Inflammable and explosive metallic aluminium has and extends in aluminium ash Property, during ball milling, metallic aluminium can be crushed and become flat, and the metallic aluminium of flat is separated not by screen cloth；Then plus Water, the nitridation reactive aluminum in water and aluminium ash, generates ammonia and aluminium hydroxide, and ammonia is extracted and absorbs, and obtains industry byproduct Ammoniacal liquor；Iron in aluminium ash can be sifted out by magnetic separator；Then, except the material after iron is (containing hydroxide, including hydrogen-oxygen Change aluminium), through centrifugal dehydration and drying process, oxide is formed, predominantly (silica is by elementary silicon for aluminum oxide and silica It is transformed, the silicon in primary aluminum ash is showed with the formation of simple substance, and in ball milling, granularity attenuates, in follow-up operation, adds Water, and whole system, with the carrying out of operation, temperature has lifting, and silicon can form silica).Oxide can carry out follow-up carrying Pure recycling, makes refractory brick or wear-resisting material.Meanwhile, the salt in aluminium ash, including sodium chloride and potassium chloride, water can be dissolved in In, can be removed during centrifugal dehydration；And the fluoride in aluminium ash, it is not necessary to remove, do not affect subsequently to make refractory brick and wear-resisting Property material.
Specific embodiment
Below, with reference to specific embodiment, the present invention is described further：
A kind of method of harmless treatment aluminium ash, comprises the following steps：
1) pending aluminium ash is taken, in being placed in ball mill, ball milling, the metallic aluminium in aluminium ash is crushed to form flat aluminium； Then sieve, flat aluminium is separated from aluminium ash, obtain the first aluminium ash；
2) the first aluminium ash is placed in the first container, first container is provided with exhaust outlet；Hold toward described first Part I water, stirring, the aluminium nitride in the first aluminium ash is added to pass through with water reaction, generation ammonia and aluminium hydroxide, ammonia in device The exhaust outlet is discharged；After ammonia is discharged, remaining material is designated as first material in the first container；
After 2-1) ammonia is discharged completely, Part II water is added toward first container again, then ball milling, makes first Remaining metallic aluminium fully reacts with water in aluminium ash, forms aluminium hydroxide；
3) first material is taken, is carried out except iron is operated, except the first material after iron is designated as second material；
4) centrifugal dehydration operation is carried out to the second material, then, is dried, obtain mixed containing aluminum oxide and silica Compound.
As preferred scheme, in step 1) in, during ball milling, until metallic aluminium is crushed to form flat aluminium, and it is flat The mesh number of shape aluminium is more than till 100 mesh；When sieving, particle diameter is separated more than the flat aluminium of 100 mesh, is reclaimed；
As preferred scheme, in step 2) in, the weight ratio of Part I water and the first aluminium ash is (1.5-2.5)：1, Preferably 2:1；After adding Part I water, stirring, in the water not till effervescent；Ammonia is by air exhauster from the row Extract out in gas port, the ammonia of extraction is absorbed by hydrochloric acid or sulfuric acid, and ammonia absorption device can be spray column.
As preferred scheme, in step 2-1) in, Part II water is added, until in the first container, water and the first aluminium The weight ratio of ash is (3-5)：Till 1, preferably 4：1.
As preferred scheme, in step 3) in, carried out except iron using magnetic deironing machine.
As preferred scheme, also including step 5), the mixture containing aluminum oxide and silica is taken, purification takes Aluminum oxide and silica, for preparing refractory brick or wear-resisting material.
Embodiment 1
The aluminium ash of certain cast aluminium enterprise is taken, comprehensive reutilization is carried out according to the method described above.Also, determine respectively after before processing The content of metallic aluminium, aluminium nitride and metallic iron in aluminium ash, test result is described in table 1 below.
The grey result record sheet of certain the cast aluminium enterprise aluminium of table 1
Metallic aluminium Aluminium nitride Metallic iron
The content of before processing 20% 10 1%
Content after process 2-5% 0-0.1 0.2%
Clearance 80% 90-100% 80%
Can obtain from the result of table 1, the scheme of harmless treatment aluminium ash provided by the present invention can effectively reclaim therein Metallic aluminium, aluminium nitride and metallic iron, it is to avoid inflammable and explosive and meet the danger that water produces poisonous ammonia, aluminium ash is properly pacified Put, while by resource, meeting the requirement of green production.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various It is corresponding to change and deformation, and all these change and deformation should all belong to the protection domain of the claims in the present invention Within.

Claims (10)

1. the method for a kind of harmless treatment aluminium ash, it is characterised in that comprise the following steps：
1) pending aluminium ash is taken, in being placed in ball mill, ball milling, the metallic aluminium in aluminium ash is crushed to form flat aluminium；Then Sieve, flat aluminium is separated from aluminium ash, obtain the first aluminium ash；
2) the first aluminium ash is placed in the first container, first container is provided with exhaust outlet；Toward first container Plus Part I water, stirring, the aluminium nitride in the first aluminium ash and water reaction, ammonia and aluminium hydroxide are produced, ammonia is by described Exhaust outlet is discharged；After ammonia is discharged, remaining material is designated as first material in the first container；
3) first material is taken, is carried out except iron is operated, except the first material after iron is designated as second material；
4) centrifugal dehydration operation is carried out to the second material, then, is dried, obtain the mixing containing aluminum oxide and silica Thing.
2. the method for harmless treatment aluminium according to claim 1 ash, it is characterised in that in step 2) and step 3) it Between, also including step 2-1), after ammonia is discharged completely, add Part II water toward first container again, then ball milling, Remaining metallic aluminium in the first aluminium ash is fully reacted with water, form aluminium hydroxide.
3. the method for harmless treatment aluminium according to claim 1 ash, it is characterised in that in step 1) in, during ball milling, directly It is crushed to form flat aluminium to metallic aluminium, and the mesh number of flat aluminium is more than till 100 mesh.
4. the method for harmless treatment aluminium according to claim 1 ash, it is characterised in that in step 2) in, Part I The weight ratio of water and the first aluminium ash is (1.5-2.5)：1；After adding Part I water, stirring, in the water not till effervescent.
5. the method for harmless treatment aluminium according to claim 4 ash, it is characterised in that in step 2) in, Part I The weight ratio of water and the first aluminium ash is 2：1.
6. the method for harmless treatment aluminium according to claim 1 ash, it is characterised in that in step 2) in, ammonia passes through Air exhauster is extracted out from the exhaust outlet, and the ammonia of extraction is absorbed by hydrochloric acid or sulfuric acid.
7. the method for harmless treatment aluminium according to claim 1 ash, it is characterised in that in step 2) in, ammonia passes through Air exhauster is extracted out from the exhaust outlet, and the ammonia of extraction is absorbed by spray column.
8. the method for harmless treatment aluminium according to claim 2 ash, it is characterised in that in step 2-1) in, add the Two part water, until in the first container, the weight ratio of water and the first aluminium ash is (3-5)：Till 1.
9. the method for harmless treatment aluminium according to claim 8 ash, it is characterised in that in step 2-1) in, add the Two part water, until in the first container, the weight ratio of water and the first aluminium ash is 4：Till 1.
10. the method for harmless treatment aluminium according to claim 1 ash, it is characterised in that in step 3) in, using magnetic Magnetic separator de-ironing is carried out except iron.
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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107381596A (en) * 2017-07-29 2017-11-24 肇庆市东银铝业有限公司 AlN hydrolysis recycles technique and its device in a kind of high-efficiency aluminum ash
CN107475532A (en) * 2017-07-07 2017-12-15 江苏海光金属有限公司 Fountain aluminium lime-ash nitrogen removing device
CN108325738A (en) * 2018-01-25 2018-07-27 中国科学院过程工程研究所 The step recovery method of metallic aluminium in a kind of aluminium ash
CN109647853A (en) * 2018-12-20 2019-04-19 郑州鸿跃环保科技有限公司 A kind of aluminium ash harmless resource utilization total system and its processing method
CN110407233A (en) * 2019-08-21 2019-11-05 于沛洲 Aluminium ash recovery process and system
CN110423894A (en) * 2019-08-31 2019-11-08 河南润隆环保科技有限公司 A kind of processing method recycling aluminium ash
CN110436498A (en) * 2019-08-09 2019-11-12 湖北新金洋资源股份公司 The method of high purity aluminium oxide is recycled in a kind of Quadratic aluminum dust of secondary aluminium melting end
CN110723746A (en) * 2019-11-04 2020-01-24 湖南绿脉环保科技有限公司 Harmless treatment method for aluminum ash
CN111978090A (en) * 2020-09-04 2020-11-24 沈阳绿冶新材科技有限公司 Aluminum-silicon light refractory castable and preparation method thereof
CN112553470A (en) * 2020-12-08 2021-03-26 广西博世科环保科技股份有限公司 Method for recovering aluminum hydroxide powder by using titanium dioxide waste acid and secondary aluminum ash
CN112811451A (en) * 2020-12-24 2021-05-18 安溪县世荣有色金属有限公司 Alumina recovery system and method
CN112853118A (en) * 2021-02-01 2021-05-28 中北大学 Secondary aluminum ash recovery method
CN113278808A (en) * 2021-04-23 2021-08-20 昆明理工大学 Method for recovering various solid waste materials in aluminum smelting process in linkage manner
CN113321229A (en) * 2021-07-05 2021-08-31 江西省科学院应用物理研究所 Process for producing corundum phase alumina by adopting secondary aluminum ash
CN113856833A (en) * 2021-09-28 2021-12-31 兰溪市博远金属有限公司 Method for efficiently recovering metal aluminum from aluminum ash
CN113912097A (en) * 2021-09-16 2022-01-11 佛山市吉力达铝材科技有限公司 Harmless treatment method for aluminum ash
CN114162842A (en) * 2021-11-12 2022-03-11 佛山市顺德区金友禾环保科技有限公司 Method and system for harmlessly producing aluminum oxide by using aluminum ash
US20230220515A1 (en) * 2021-09-10 2023-07-13 Hydrova Inc. Obtaining valuable solids and combustible gas from aluminum remelting waste
CN116764618A (en) * 2023-06-21 2023-09-19 福建明瑞科维新材料科技有限公司 Catalyst for promoting reaction of aluminum nitride and water and preparation method thereof

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CN104261445A (en) * 2014-09-26 2015-01-07 昆明冶金研究院 Method for harmlessly treating aluminum ash and preparing sandy alumina
CN105347361A (en) * 2015-11-20 2016-02-24 陈湘清 Comprehensive utilization method of aluminum ash
CN105692664A (en) * 2016-02-04 2016-06-22 曹志成 Method for harmless treatment of aluminum slag ash

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CN103555955A (en) * 2013-11-13 2014-02-05 昆明冶金研究院 Resource utilization method of aluminum ash
CN104261445A (en) * 2014-09-26 2015-01-07 昆明冶金研究院 Method for harmlessly treating aluminum ash and preparing sandy alumina
CN105347361A (en) * 2015-11-20 2016-02-24 陈湘清 Comprehensive utilization method of aluminum ash
CN105692664A (en) * 2016-02-04 2016-06-22 曹志成 Method for harmless treatment of aluminum slag ash

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107475532A (en) * 2017-07-07 2017-12-15 江苏海光金属有限公司 Fountain aluminium lime-ash nitrogen removing device
CN107381596A (en) * 2017-07-29 2017-11-24 肇庆市东银铝业有限公司 AlN hydrolysis recycles technique and its device in a kind of high-efficiency aluminum ash
CN108325738A (en) * 2018-01-25 2018-07-27 中国科学院过程工程研究所 The step recovery method of metallic aluminium in a kind of aluminium ash
CN108325738B (en) * 2018-01-25 2020-08-18 中国科学院过程工程研究所 Step recovery method for metal aluminum in aluminum ash
CN109647853A (en) * 2018-12-20 2019-04-19 郑州鸿跃环保科技有限公司 A kind of aluminium ash harmless resource utilization total system and its processing method
CN110436498A (en) * 2019-08-09 2019-11-12 湖北新金洋资源股份公司 The method of high purity aluminium oxide is recycled in a kind of Quadratic aluminum dust of secondary aluminium melting end
CN110407233A (en) * 2019-08-21 2019-11-05 于沛洲 Aluminium ash recovery process and system
CN110423894A (en) * 2019-08-31 2019-11-08 河南润隆环保科技有限公司 A kind of processing method recycling aluminium ash
CN110723746A (en) * 2019-11-04 2020-01-24 湖南绿脉环保科技有限公司 Harmless treatment method for aluminum ash
CN111978090B (en) * 2020-09-04 2021-05-14 沈阳绿冶新材科技有限公司 Aluminum-silicon light refractory castable and preparation method thereof
CN111978090A (en) * 2020-09-04 2020-11-24 沈阳绿冶新材科技有限公司 Aluminum-silicon light refractory castable and preparation method thereof
CN112553470A (en) * 2020-12-08 2021-03-26 广西博世科环保科技股份有限公司 Method for recovering aluminum hydroxide powder by using titanium dioxide waste acid and secondary aluminum ash
CN112811451A (en) * 2020-12-24 2021-05-18 安溪县世荣有色金属有限公司 Alumina recovery system and method
CN112853118A (en) * 2021-02-01 2021-05-28 中北大学 Secondary aluminum ash recovery method
CN113278808A (en) * 2021-04-23 2021-08-20 昆明理工大学 Method for recovering various solid waste materials in aluminum smelting process in linkage manner
CN113278808B (en) * 2021-04-23 2022-01-11 昆明理工大学 Method for recovering various solid waste materials in aluminum smelting process in linkage manner
CN113321229A (en) * 2021-07-05 2021-08-31 江西省科学院应用物理研究所 Process for producing corundum phase alumina by adopting secondary aluminum ash
US20230220515A1 (en) * 2021-09-10 2023-07-13 Hydrova Inc. Obtaining valuable solids and combustible gas from aluminum remelting waste
CN113912097A (en) * 2021-09-16 2022-01-11 佛山市吉力达铝材科技有限公司 Harmless treatment method for aluminum ash
CN113856833A (en) * 2021-09-28 2021-12-31 兰溪市博远金属有限公司 Method for efficiently recovering metal aluminum from aluminum ash
CN113856833B (en) * 2021-09-28 2023-02-03 兰溪市博远金属有限公司 Method for efficiently recovering metal aluminum from aluminum ash
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