CN103204526B - A kind of method preparing alumina sol - Google Patents
A kind of method preparing alumina sol Download PDFInfo
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- CN103204526B CN103204526B CN201210011184.2A CN201210011184A CN103204526B CN 103204526 B CN103204526 B CN 103204526B CN 201210011184 A CN201210011184 A CN 201210011184A CN 103204526 B CN103204526 B CN 103204526B
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- CN
- China
- Prior art keywords
- alumina sol
- aluminium ash
- auxiliary agent
- hydrochloric acid
- filtrate
- 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.)
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 43
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000004411 aluminium Substances 0.000 claims abstract description 40
- 239000000706 filtrate Substances 0.000 claims abstract description 35
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 22
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000032683 aging Effects 0.000 claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 15
- -1 polyoxyethylene Polymers 0.000 claims abstract description 12
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 10
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 9
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 9
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims abstract description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 9
- 238000013019 agitation Methods 0.000 claims abstract description 9
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 9
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 9
- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 claims abstract description 9
- 229910000400 magnesium phosphate tribasic Inorganic materials 0.000 claims abstract description 9
- 238000012423 maintenance Methods 0.000 claims abstract description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 9
- 238000002360 preparation method Methods 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 5
- 239000002910 solid waste Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 22
- 150000001875 compounds Chemical class 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000000413 hydrolysate Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229920000592 inorganic polymer Polymers 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
- 150000004767 nitrides Chemical class 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Landscapes
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a kind of method preparing alumina sol, comprise step: adding aluminium ash to concentration is in the hydrochloric acid of 10-30%, keeps 70-100 DEG C, Keep agitation 2-10h, filter after ageing 4-20h, described aluminium ash is 1: 5 to 1: 9 with the mass ratio of hydrochloric acid; Drip the ammoniacal liquor and auxiliary agent that concentration is 1%-10% in the filtrate obtained after filtration, maintenance temperature is 80-100 DEG C, and described auxiliary agent is at least one in polyvinyl alcohol, polyoxyethylene glycol, acrylic resin, aluminum phosphate, trimagnesium phosphate; Regulate pH value to stir 30min to 8-9, after ageing 6-12h, obtain alumina sol.Aluminium ash as the raw material preparing alumina sol, is consumed industrial solid wastes aluminium ash by the present invention, solves the environmental problem of the difficult difficult landfill of aluminium ash; And turn waste into wealth, reduce the preparation cost of alumina sol.
Description
Technical field
The present invention relates to compound preparation and industrial waste recovery and utilization technology field, particularly a kind of method preparing alumina sol.
Background technology
Alumina sol is a kind of inorganic polymer multivalence polymkeric substance, and its molecular formula is Al
2(OH) Cl
6-n, can be considered a kind of hydrolysate between aluminum chloride and aluminium hydroxide, be therefore also called aluminium chlorohydroxide.The preparation of alumina sol thermopositive reaction occurs under certain condition by hydrochloric acid and metal aluminum shot, and aluminium dissolves in hydrochloric acid, hydrolytic polymerization forms, and chemical equation is as follows:
2Al+(6-n)HCl+nH
2O＝Al
2(OH)Cl
6-n+3H
2
Alumina sol is mainly used as the caking agent of catalytic cracking catalyst, and it can strengthen the abrasion resistance of catalyzer, can improve its reactivity again.In addition, alumina sol also can be used for preparing sapphire whisker, Electrostatic Treatment agent, permeability-reducing admixture, water conditioner etc.Use metallic aluminium to produce in existing preparation method, not only cost is higher, and produces hydrogen in preparation process, there is potential safety hazard; And use organoaluminum to prepare Alumina gel as raw material, and expensive raw material price, inflammable, poisonous, not easily preserve, bring difficulty to industrialization.
And aluminium ash is the solid waste that aluminium electrolytic industry produces, generally often produces 1 ton of aluminium and will produce 30 ~ 50 kg aluminium slag aluminium ashes.Usually all contain metallic aluminium, the oxide compound of aluminium, nitride and carbide, salt in aluminium ash, other metal oxides are (as SiO
2, MgO) and some other compositions.In aluminium ash containing a lot of direct or indirect environmentally hazardous element or compound (as Al
4c
3meet water with AlN and can produce CH respectively
4and NH
3), if directly its landfill can be caused serious threat to environment.Therefore the recovery and utilizing of aluminium ash has become international problem.
Summary of the invention
The invention provides a kind of method preparing alumina sol from aluminium ash, not only solve the problem of alumina sol raw materials costliness, and provide new approach for harmless treatment aluminium is grey.
Technical scheme of the present invention is:
Prepare a method for alumina sol, comprise step:
A, by aluminium ash, to add concentration to be in the hydrochloric acid of 10-30%, keeps 70-100 DEG C, Keep agitation 2-10h, filter after ageing 4-20h, and described aluminium ash is 1: 5 to 1: 9 with the mass ratio of hydrochloric acid;
B, in the filtrate that obtains after filtering, drip the ammoniacal liquor and auxiliary agent that concentration is 1%-10%, maintenance temperature is 80-100 DEG C, and described auxiliary agent is at least one in polyvinyl alcohol, polyoxyethylene glycol, acrylic resin, aluminum phosphate, trimagnesium phosphate; Regulate pH value to stir 30min to 8-9, after ageing 6-12h, obtain alumina sol.
Preferably, the interpolation speed of described aluminium ash is 1-5g/min.
Preferably, described auxiliary agent adding proportion is the 0.1-0.3% of described filtrate quality.
The method preparing alumina sol from aluminium ash provided by the invention, tool has the following advantages:
1, process aluminium ash: by aluminium ash as the raw material preparing alumina sol, consume industrial solid wastes aluminium ash, solve the environmental problem of the difficult difficult landfill of aluminium ash; And turn waste into wealth, reduce the preparation cost of alumina sol;
2, concise in technology: aluminium ash and mixed in hydrochloric acid, metallic aluminium in aluminium ash and acid-respons are become aluminum ion, after hydrolysis, polymerization form complicated polyvalent cation, then adds ammoniacal liquor and auxiliary agent adjustment pH value, control aluminum ions hydrolysis, prevent from forming aluminum hydroxide precipitation; The various auxiliary agents added then improve the dispersiveness of aluminium glue grain, prevent from reuniting, and make the alumina sol that obtains stable, transparent.
Embodiment
Below in conjunction with embodiment, further detailed description is done to technical solution of the present invention, but embodiments of the present invention are not limited thereto.
Embodiment 1
A, first compound concentration are the hydrochloric acid of 30%, are the ratio of 1: 8 in mass ratio, in hydrochloric acid, slowly add aluminium ash with the speed of 2g/min, keep 60-80 DEG C, Keep agitation reaction 5h, then ageing 9h, then carry out filtration and obtain filtrate;
B, constantly stir filtrate, in filtrate, drip concentration is 8% ammoniacal liquor, and in filtrate, add the auxiliary agent accounting for filtrate quality per-cent 0.2%, maintenance temperature is 80-90 DEG C, after regulating pH value to 8-9, continue to stir 30min, after ageing 12h, obtain stable alumina sol.Auxiliary agent is at least one in polyvinyl alcohol, polyoxyethylene glycol, acrylic resin, aluminum phosphate, trimagnesium phosphate.
Embodiment 2
A, first compound concentration are the hydrochloric acid of 20%, are the ratio of 1: 7 in mass ratio, in hydrochloric acid, slowly add aluminium ash with the speed of 4g/min, keep 70-80 DEG C, Keep agitation reaction 3h, then ageing 11h, then carry out filtration and obtain filtrate;
B, constantly stir filtrate, in filtrate, drip concentration is 6% ammoniacal liquor, and in filtrate, add the auxiliary agent accounting for filtrate quality per-cent 0.15%, maintenance temperature is 80-90 DEG C, after regulating pH value to 8-9, continue to stir 30min, after ageing 9h, obtain stable alumina sol.Auxiliary agent is at least one in polyvinyl alcohol, polyoxyethylene glycol, acrylic resin, aluminum phosphate, trimagnesium phosphate.
Embodiment 3
A, first compound concentration are the hydrochloric acid of 25%, are the ratio of 1: 9 in mass ratio, in hydrochloric acid, slowly add aluminium ash with the speed of 5g/min, keep 60-70 DEG C, Keep agitation reaction 2h, then ageing 12h, then carry out filtration and obtain filtrate;
B, constantly stir filtrate, in filtrate, drip concentration is 6% ammoniacal liquor, and in filtrate, add the auxiliary agent accounting for filtrate quality per-cent 0.3%, maintenance temperature is 80-90 DEG C, after regulating pH value to 8-9, continue to stir 30min, after ageing 8h, obtain stable alumina sol.Auxiliary agent is at least one in polyvinyl alcohol, polyoxyethylene glycol, acrylic resin, aluminum phosphate, trimagnesium phosphate.
Embodiment 4
A, first compound concentration are the hydrochloric acid of 10%, are the ratio of 1: 5 in mass ratio, in hydrochloric acid, slowly add aluminium ash with the speed of 1g/min, keep 70-90 DEG C, Keep agitation reaction 4h, then ageing 16h, then carry out filtration and obtain filtrate;
B, constantly stir filtrate, in filtrate, drip concentration is 9% ammoniacal liquor, and in filtrate, add the auxiliary agent accounting for filtrate quality per-cent 0.25%, maintenance temperature is 80-90 DEG C, after regulating pH value to 8-9, continue to stir 30min, after ageing 12h, obtain stable alumina sol.Auxiliary agent is at least one in polyvinyl alcohol, polyoxyethylene glycol, acrylic resin, aluminum phosphate, trimagnesium phosphate.
Embodiment 5
A, first compound concentration are the hydrochloric acid of 30%, are the ratio of 1: 8 in mass ratio, in hydrochloric acid, slowly add aluminium ash with the speed of 3g/min, keep 75-85 DEG C, Keep agitation reaction 10h, then ageing 20h, then carry out filtration and obtain filtrate;
B, constantly stir filtrate, in filtrate, drip concentration is 10% ammoniacal liquor, and in filtrate, add the auxiliary agent accounting for filtrate quality per-cent 0.2%, maintenance temperature is 70-90 DEG C, after regulating pH value to 8-9, continue to stir 30min, after ageing 6h, obtain stable alumina sol.Auxiliary agent is at least one in polyvinyl alcohol, polyoxyethylene glycol, acrylic resin, aluminum phosphate, trimagnesium phosphate.
Embodiment 6
A, first compound concentration are the hydrochloric acid of 15%, are the ratio of 1: 6 in mass ratio, in hydrochloric acid, slowly add aluminium ash with the speed of 4g/min, keep 85-100 DEG C, Keep agitation reaction 8h, then ageing 20h, then carry out filtration and obtain filtrate;
B, constantly stir filtrate, in filtrate, drip concentration is 10% ammoniacal liquor, and in filtrate, add the auxiliary agent accounting for filtrate quality per-cent 0.2%, maintenance temperature is 70-90 DEG C, after regulating pH value to 8-9, continue to stir 30min, after ageing 6h, obtain stable alumina sol.Auxiliary agent is at least one in polyvinyl alcohol, polyoxyethylene glycol, acrylic resin, aluminum phosphate, trimagnesium phosphate.
Above a kind of method preparing alumina sol that the embodiment of the present invention provides being described in detail, applying specific case herein and principle of the present invention and embodiment are set forth, only understanding core concept of the present invention for helping; Should not be construed as limitation of the present invention.
Claims (2)
1. prepare a method for alumina sol, it is characterized in that, comprise step:
A, by aluminium ash, to add concentration to be in the hydrochloric acid of 10-30%, keeps 70-100 DEG C, Keep agitation 2-10h, filter after ageing 4-20h, and described aluminium ash is 1: 5 to 1: 9 with the mass ratio of hydrochloric acid;
B, in the filtrate that obtains after filtering, drip the ammoniacal liquor that concentration is 1%-10%, add auxiliary agent, maintenance temperature is 80-100 DEG C, and described auxiliary agent is at least one in polyvinyl alcohol, polyoxyethylene glycol, acrylic resin, aluminum phosphate, trimagnesium phosphate; Adjust ph stirs 30min to 8-9, obtains alumina sol after ageing 6-12h; The interpolation speed of described aluminium ash is 1-5g/min.
2. a kind of method preparing alumina sol according to claim 1, is characterized in that, described auxiliary agent adding proportion is the 0.1-0.3% of described filtrate quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210011184.2A CN103204526B (en) | 2012-01-15 | 2012-01-15 | A kind of method preparing alumina sol |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210011184.2A CN103204526B (en) | 2012-01-15 | 2012-01-15 | A kind of method preparing alumina sol |
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| CN103204526A CN103204526A (en) | 2013-07-17 |
| CN103204526B true CN103204526B (en) | 2016-02-17 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353400A (en) * | 2014-11-12 | 2015-02-18 | 山东恒通晶体材料有限公司 | Preparation method of high-purity high-solid content transparent aluminum sol |
| CN105130204A (en) * | 2015-07-27 | 2015-12-09 | 江苏欣润塑胶有限公司 | Preparation method for Al2O3-SiO2 inorganic antireflection film |
| CN106747348A (en) * | 2016-11-29 | 2017-05-31 | 河南科技大学 | A kind of method that utilization aluminium ash prepares Brown Alundum raw materials for production |
| CN106747301A (en) * | 2016-11-29 | 2017-05-31 | 河南科技大学 | A kind of method that smelting aluminum ash prepares Brown Alundum |
| CN110526266B (en) * | 2019-08-20 | 2022-04-05 | 广州市威格林环保科技有限公司 | Aluminum sol used as binder of automobile exhaust purification catalyst and preparation method thereof |
| CN111017971A (en) * | 2019-12-26 | 2020-04-17 | 山东鲁阳浩特高技术纤维有限公司 | Alumina sol and preparation method thereof |
| TWI760226B (en) * | 2021-05-19 | 2022-04-01 | 釔銪鑫應用材料有限公司 | Treatment method of metal oxide slag |
| TWI816400B (en) * | 2021-05-19 | 2023-09-21 | 釔銪鑫應用材料有限公司 | Recycling aluminum grinding aid |
| CN113735579A (en) * | 2021-09-23 | 2021-12-03 | 南京金鲤新材料有限公司 | ZrO for thermal spraying2/Al2O3Method for preparing composite powder |
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