CN1350065A - Comprehensive utilization of waste from aluminium smeltery - Google Patents
Comprehensive utilization of waste from aluminium smeltery Download PDFInfo
- Publication number
- CN1350065A CN1350065A CN00130761A CN00130761A CN1350065A CN 1350065 A CN1350065 A CN 1350065A CN 00130761 A CN00130761 A CN 00130761A CN 00130761 A CN00130761 A CN 00130761A CN 1350065 A CN1350065 A CN 1350065A
- Authority
- CN
- China
- Prior art keywords
- waste
- aluminium
- acid
- comprehensive utilization
- concentrated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 52
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 25
- 239000004411 aluminium Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 11
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 11
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims abstract description 11
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910001388 sodium aluminate Inorganic materials 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims description 23
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 13
- 235000011124 aluminium ammonium sulphate Nutrition 0.000 claims description 12
- LCQXXBOSCBRNNT-UHFFFAOYSA-K ammonium aluminium sulfate Chemical compound [NH4+].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O LCQXXBOSCBRNNT-UHFFFAOYSA-K 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 239000011593 sulfur Substances 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 238000002425 crystallisation Methods 0.000 claims description 6
- 230000008025 crystallization Effects 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 5
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 4
- 238000007669 thermal treatment Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 244000144992 flock Species 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000007670 refining Methods 0.000 abstract description 2
- 239000002893 slag Substances 0.000 abstract description 2
- WZUKKIPWIPZMAS-UHFFFAOYSA-K Ammonium alum Chemical compound [NH4+].O.O.O.O.O.O.O.O.O.O.O.O.[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O WZUKKIPWIPZMAS-UHFFFAOYSA-K 0.000 abstract 1
- 241000190022 Pilea cadierei Species 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000000706 filtrate Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910017083 AlN Inorganic materials 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 2
- 229940037003 alum Drugs 0.000 description 2
- TWHBEKGYWPPYQL-UHFFFAOYSA-N aluminium carbide Chemical compound [C-4].[C-4].[C-4].[Al+3].[Al+3].[Al+3].[Al+3] TWHBEKGYWPPYQL-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- -1 catalyzer Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 159000000013 aluminium salts Chemical class 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000006115 defluorination reaction Methods 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000012747 synergistic agent Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The present invention uses waste slag recovered in the course of refining aluminium in aluminium plant, waste sulfuric acid produced by using electrochemical process to treat surface of aluminium section material and waste sodium hydroxide as raw material to prepare aluminium ammonium sulfate, sodium aluminate and aluminium hydroxide, etc. which are chemical products with extensive application range.
Description
The invention belongs to the environmental protection field, particularly relate to the method for comprehensive utilization of a kind of aluminium manufacturer waste.
For a long time, common aluminium manufacturer has all produced a large amount of waste residues, spent acid and salkali waste in producing the refined aluminum and the aluminium section bar course of processing.Wherein waste residue produces in high temperature refined aluminum process, be the Alpha-alumina that contains impurity such as part aluminium bits, aluminium nitride and aluminium carbide, meet water and can constantly produce unpleasant ammonium hydroxide and acetylene, the wilderness of abandoning, not only can destroy soil, and can the severe contamination atmosphere.And spent acid is the sulphuric acid soln that contains a small amount of Tai-Ace S 150, and salkali waste is the sodium hydroxide solution that contains a small amount of sodium aluminate, and these strong acid and strong base solution are discharging wantonly throughout the year, will cause stream pollution, influences littoral resident's safe drinking water.
The objective of the invention is to disclose that a kind of to adopt waste residue, spent acid, the salkali waste of aluminium manufacturer be the method for Chemicals such as feedstock production exsiccated ammonium alum, Tai-Ace S 150, sodium aluminate, aluminium hydroxide.This method had both thoroughly solved waste residue and had stacked the pollution that causes, and had eliminated the pollution problem of spent acid, salkali waste discharging again, was a kind of comprehensive utilization, the environmental protection technology of turning waste into wealth.The prepared Chemicals of present method all have extremely wide purposes, and wherein, exsiccated ammonium alum is mainly used in fur tanning, and the additive aspect of starter has bigger importance as producing the high-purity ultra-fine alumina raw material.Aluminic acid is received the processing that is mainly used in tap water and process water, is used for paper industry in a large number, also is widely used aspect many in weaving, printing and dyeing, rubber, pottery, pharmacy, printing ink, paint, plating and casting etc.Aluminium hydroxide is mainly used in makes support of the catalyst and activated alumina is produced various aluminium salt and siccative, and the raw material of drinking water defluorination agent also is widely used as fire retardant.Tai-Ace S 150 is mainly used in water purification and papermaking, also as tanning agent, mordant, finings, deodorization and discoloration agent, catalyzer, medicine synergistic agent, fire extinguishing and fire-retardant material etc.So the present invention also is of great significance to improving aluminium manufacturer's economic benefit.
At present, be the technological development aspect of Chemicals such as feedstock production Tai-Ace S 150 with waste residue, spent acid and the salkali waste of aluminium manufacturer, domestic carry out few, also rare in the world.Have only Aranovskio.A, A. etc. carried out research to the method that the flue dust in aluminium manufacturer's reduction roaster dust precipitator is produced Tai-Ace S 150.Japanese kokai publication sho 53-29298 and 54-157792 have introduced respectively and have utilized in the spent acid salkali waste that the aluminium electrochemical surface handle to reclaim and technology that the aluminium hydroxide mud that generates and spent acid prepare Tai-Ace S 150.Domestic part is produced house and is also adopted similar explained hereafter Tai-Ace S 150, and the sodium sulfate that this technology but exists the acid-base neutralisation generation discharges the secondary pollution problem that causes.And to waste residue in the aluminium manufacturer, spent acid, salkali waste carry out comprehensive utilizating research and do not see relevant bibliographical information as yet.
The preparation technology of exsiccated ammonium alum is: 1500-1800 is restrained spent acid be concentrated into about 15%, react with 600 gram waste residues down at 80-100 ℃, aluminium nitride and sulfuric acid reaction that reaction finishes in the waste residue of back have generated exsiccated ammonium alum, and aluminium bits in the waste residue and aluminium carbide and sulfuric acid reaction have generated Tai-Ace S 150.Production fluid is stand-by through cooling off, filter, filter residue being deposited, and after filtrate is left standstill a couple of days, is that first crystallization is separated out because of exsiccated ammonium alum solubleness is low, crystal is exsiccated ammonium alum, raffinate is alum liquor, and after concentrated, cooling, crystallization, filtration, crystal is Tai-Ace S 150 again.
And the preparation that aluminic acid is received etc. is: 1800-3500 is restrained salkali waste to be concentrated into about 25%, filter residue behind the above-mentioned generation exsiccated ammonium alum of adding 250 grams, under 200-400 ℃ of temperature alkaline purification 2-8 hour, the best is under the 260-300 ℃ of temperature after alkaline purification 3-5 hour, through cooling, filtration, filtrate is aluminic acid and receives solution, is the sodium aluminate product after refining.Then, under constantly stirring, slowly 2500-3100 is restrained the about 1 mole sulfur waste acid of concentration and inject the sodium aluminate solution of the above-mentioned generation of 900 grams, be neutralized to and only generate white flocks, sodium aluminate and sulfuric acid reaction have generated white precipitate, after the filtration, filter cake is the aluminium hydroxide product of white through washing after the oven dry.1500-2000 is restrained sulfur waste acid be concentrated into about 30%, add the above-mentioned generation aluminium hydroxide of 100 grams, after the stirring and dissolving, be Tai-Ace S 150 through concentrated, filtration, cooling, crystallization, crystal.Filter residue is after alkali thermal treatment, and the effective rate of utilization of waste residue is up to more than 85%.Spent acid, salkali waste have all obtained utilization.
The present invention has following outstanding advantage; 1) waste residue utilization ratio after spent acid and salkali waste thermal treatment has solved waste residue substantially and has stacked the pollution problem that causes up to more than 85%.2) utilization ratio of spent acid salkali waste all reaches 100%, has eliminated the pollution that the discharging of spent acid salkali waste causes.3) utilizing waste to produce important Chemicals such as exsiccated ammonium alum, aluminic acid are received, aluminium hydroxide, Tai-Ace S 150, is a kind of environmental protection development technique that turns waste into wealth.4) simple, reduced investment, instant effect of technology, obvious economic benefit is arranged, be suitable for applying.
The method of comprehensive utilization of waste Aluminum slag spent acid salkali waste is all sidedly the waste of aluminium manufacturer to be fully utilized, and is to improve aluminium manufacturer's surrounding environment, improves the highly effective fundamental measure of aluminium manufacturer's economic benefit, and higher popularization and application values is arranged.
Embodiment 1: 1800 gram sulfur waste acid are concentrated into about 15%, place reactor, under 90-100 ℃, slowly add 600 gram waste residues, behind the stirring reaction 7 hours, cooling, filtration, filter residue is stand-by, after filtrate concentrates a little, left standstill Number days, exsiccated ammonium alum promptly slowly crystallization separate out, crystal is the exsiccated ammonium alum product, production fluid is alum liquor.
Embodiment 2: 6000 gram salkali waste are concentrated into about 25%, place reactor, add the above-mentioned filter residue of 400 grams, after stirring, heated 5 hours down at 300 ℃, after the cooling, filter, filtrate is sodium aluminate solution, through concentrating, is the sodium aluminate product behind the cooling curing.
Embodiment 3: 3000 gram sulfur waste acid are being added under constantly stirring in the above-mentioned sodium aluminate solution of 1000 grams, and the white precipitate of generation after filtration, washing, is the aluminium hydroxide product after the drying.
Embodiment 4: 2000 gram sulfur waste acid are concentrated into about 30%, place reactor, under 80-100 ℃, add the above-mentioned generation aluminium hydroxide of 100 grams, after the stirring and dissolving, through concentrating, filtration, cooling, crystallization, promptly generating Tai-Ace S 150.
Claims (4)
1. the method for comprehensive utilization of aluminium manufacturer's waste, it is characterized in that: (1) restrains spent acid with 1500-1800 and is concentrated into about 15%, places reactor, is heated to 80-100 ℃, adds 600 gram left and right sides waste residues and reacts, and can generate exsiccated ammonium alum and part of sulfuric acid aluminium; (2) 1800-3500 is restrained salkali waste and is concentrated into about 25%, place reactor, add the filter residue behind the above-mentioned generation exsiccated ammonium alum in the 250 gram left and right sides, after under the 200-400 ℃ of temperature alkaline purification 2-8 hour aluminic acid receive; (3), be neutralized to the about 1 mole sulfur waste acid of 2500-3100 gram concentration and generate white flocks and end, after filtration, be aluminium hydroxide after the washing, drying with the sodium aluminate solution of the above-mentioned generation of 900 grams; (4) 1500-2000 is restrained sulfur waste acid and be concentrated into about 30%, place reactor, add the above-mentioned generation aluminium hydroxide of 100 grams, after the stirring and dissolving, be Tai-Ace S 150 through concentrated, filtration, cooling, crystallization, crystal.
According to claim 1 aluminium manufacturer's waste method of comprehensive utilization, it is characterized in that: its alkali purification temp of filter residue is 260-300 ℃.
According to claim 1 aluminium manufacturer's waste method of comprehensive utilization, it is characterized in that: during the thermal treatment of filter residue alkali, the weight ratio of waste residue salkali waste is about 0.5-1.
4. method of comprehensive utilization as claimed in claim 1 is characterized in that: the alkali heat treatment time of filter residue is 3-5 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001307614A CN1308469C (en) | 2000-10-19 | 2000-10-19 | Comprehensive utilization of waste from aluminium smeltery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001307614A CN1308469C (en) | 2000-10-19 | 2000-10-19 | Comprehensive utilization of waste from aluminium smeltery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1350065A true CN1350065A (en) | 2002-05-22 |
| CN1308469C CN1308469C (en) | 2007-04-04 |
Family
ID=4594291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001307614A Expired - Fee Related CN1308469C (en) | 2000-10-19 | 2000-10-19 | Comprehensive utilization of waste from aluminium smeltery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1308469C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1861525B (en) * | 2005-12-07 | 2010-05-12 | 金立新 | Treatment process of active hargil waste acid |
| CN101987735A (en) * | 2010-12-10 | 2011-03-23 | 合肥工业大学 | Method for extracting alumina from coal gasification fly ash at low temperature |
| CN102430730A (en) * | 2011-12-31 | 2012-05-02 | 西峡龙成冶金材料有限公司 | Method for producing continuous casting crystallizer covering slag by using electrolytic aluminum waste residues |
| CN101922035B (en) * | 2004-06-22 | 2013-05-01 | 东洋制罐株式会社 | Surface-treated metal materials, method of treating the surfaces thereof, resin-coated metal materials, cans and can lids |
| CN103936041A (en) * | 2013-01-18 | 2014-07-23 | 新疆大学 | Method for recovering and utilizing aluminum-containing waste sulfuric acid |
| CN103950961A (en) * | 2014-04-04 | 2014-07-30 | 中国科学院过程工程研究所 | Method for preparing aluminum hydroxide from industrial waste residue generated in aluminum alloy surface treatment |
| TWI627137B (en) * | 2017-01-13 | 2018-06-21 | Method for recycling waste to produce aluminum sulfate | |
| CN109133133A (en) * | 2018-09-21 | 2019-01-04 | 佛山市吉力达铝材科技有限公司 | A method of aluminum sulfate solution is prepared using aluminium wastewater slag |
| CN109206140A (en) * | 2018-10-22 | 2019-01-15 | 厦门钜瓷科技有限公司 | The preparation method of aluminium nitride powder is prepared based on pyrolysismethod |
| CN109678188A (en) * | 2019-01-18 | 2019-04-26 | 衡阳市建衡实业有限公司 | A kind of Description on Production of Sulfaminic Acid spent acid method of comprehensive utilization |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06145836A (en) * | 1992-11-16 | 1994-05-27 | Meisei Kako Kk | Production of alloy utilizing aluminum slag |
-
2000
- 2000-10-19 CN CNB001307614A patent/CN1308469C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101922035B (en) * | 2004-06-22 | 2013-05-01 | 东洋制罐株式会社 | Surface-treated metal materials, method of treating the surfaces thereof, resin-coated metal materials, cans and can lids |
| CN1861525B (en) * | 2005-12-07 | 2010-05-12 | 金立新 | Treatment process of active hargil waste acid |
| CN101987735A (en) * | 2010-12-10 | 2011-03-23 | 合肥工业大学 | Method for extracting alumina from coal gasification fly ash at low temperature |
| CN102430730A (en) * | 2011-12-31 | 2012-05-02 | 西峡龙成冶金材料有限公司 | Method for producing continuous casting crystallizer covering slag by using electrolytic aluminum waste residues |
| CN102430730B (en) * | 2011-12-31 | 2014-05-28 | 西峡龙成冶金材料有限公司 | Method for producing continuous casting crystallizer mould powders by utilizing electrolytic aluminum waste residues |
| CN103936041B (en) * | 2013-01-18 | 2015-10-14 | 新疆大学 | A kind of recoverying and utilizing method containing aluminium Waste Sulfuric Acid |
| CN103936041A (en) * | 2013-01-18 | 2014-07-23 | 新疆大学 | Method for recovering and utilizing aluminum-containing waste sulfuric acid |
| CN103950961A (en) * | 2014-04-04 | 2014-07-30 | 中国科学院过程工程研究所 | Method for preparing aluminum hydroxide from industrial waste residue generated in aluminum alloy surface treatment |
| TWI627137B (en) * | 2017-01-13 | 2018-06-21 | Method for recycling waste to produce aluminum sulfate | |
| CN109133133A (en) * | 2018-09-21 | 2019-01-04 | 佛山市吉力达铝材科技有限公司 | A method of aluminum sulfate solution is prepared using aluminium wastewater slag |
| CN109206140A (en) * | 2018-10-22 | 2019-01-15 | 厦门钜瓷科技有限公司 | The preparation method of aluminium nitride powder is prepared based on pyrolysismethod |
| CN109678188A (en) * | 2019-01-18 | 2019-04-26 | 衡阳市建衡实业有限公司 | A kind of Description on Production of Sulfaminic Acid spent acid method of comprehensive utilization |
| CN109678188B (en) * | 2019-01-18 | 2022-03-11 | 衡阳市建衡实业有限公司 | Comprehensive utilization method of waste acid in sulfamic acid production |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1308469C (en) | 2007-04-04 |
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Granted publication date: 20070404 Termination date: 20091119 |