CN114291879B - Preparation method of aluminum silicate - Google Patents
Preparation method of aluminum silicate Download PDFInfo
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- CN114291879B CN114291879B CN202111396047.0A CN202111396047A CN114291879B CN 114291879 B CN114291879 B CN 114291879B CN 202111396047 A CN202111396047 A CN 202111396047A CN 114291879 B CN114291879 B CN 114291879B
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- silicon
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- slag
- aluminum silicate
- containing alkaline
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- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 53
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 53
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 46
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 45
- 239000010703 silicon Substances 0.000 claims abstract description 45
- 239000002893 slag Substances 0.000 claims abstract description 44
- 238000006243 chemical reaction Methods 0.000 claims abstract description 42
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims abstract description 32
- 239000008103 glucose Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000005406 washing Methods 0.000 claims abstract description 22
- 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 abstract description 20
- 238000001914 filtration Methods 0.000 claims abstract description 20
- 238000001556 precipitation Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000002244 precipitate Substances 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000004537 pulping Methods 0.000 claims abstract description 11
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 238000004321 preservation Methods 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 8
- 230000035484 reaction time Effects 0.000 claims description 8
- 238000010009 beating Methods 0.000 claims description 4
- 238000011534 incubation Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 2
- 238000002386 leaching Methods 0.000 abstract description 11
- 239000000047 product Substances 0.000 abstract description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 6
- 239000011734 sodium Substances 0.000 abstract description 6
- 229910052708 sodium Inorganic materials 0.000 abstract description 6
- CMZUMMUJMWNLFH-UHFFFAOYSA-N sodium metavanadate Chemical compound [Na+].[O-][V](=O)=O CMZUMMUJMWNLFH-UHFFFAOYSA-N 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 6
- 229910000166 zirconium phosphate Inorganic materials 0.000 abstract description 6
- 238000000605 extraction Methods 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000000049 pigment Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 9
- 239000007787 solid Substances 0.000 description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the field of chemical industry and discloses a preparation method of aluminum silicate. The method comprises the following steps: (1) Adding aluminum sulfate into the silicon-containing alkaline vanadium liquid, reacting under stirring, and then filtering and washing to obtain precipitation slag; (2) Adding the precipitate slag obtained in the step (1) into water for pulping, then adding glucose for reaction, then adding ethanol for reaction, and then filtering, washing and drying; wherein the molar ratio of the aluminum sulfate to the silicon in the silicon-containing alkaline vanadium solution is 1:2.8-3. The sodium vanadate solution obtained after water leaching in the vanadium slag sodium roasting-water leaching vanadium extraction process is treated by the method, and the high-purity aluminum silicate product can be obtained on the premise of ensuring high-efficiency removal of impurity silicon, so that the emission of waste is reduced, and the recycling is realized. The obtained high-purity aluminum silicate product can be directly used as a raw material for producing pigments and coatings.
Description
Technical Field
The invention relates to the field of chemical industry, in particular to a preparation method of aluminum silicate.
Background
The sodium salt is mainly used as a roasting additive, sodium vanadate is generated by roasting under the condition of high temperature and oxygen, sodium vanadate solution is obtained after water leaching, vanadium is further precipitated to obtain vanadium products, but the vanadium slag contains a large amount of silicon and sodium to form sodium silicate which enters the solution together with sodium, and if the sodium silicate is not removed, the quality of the precipitated vanadium and the vanadium products can be affected.
The conventional desilication method is quite numerous, for example, the optimal desilication effect of magnesium sulfate is reported in the research of desilication by an alkaline vanadium liquid precipitation method, the desilication is carried out by adopting a flocculating agent in the research of desilication test of vanadium-containing alkaline leaching liquid, and the research of deep desilication process of salt-free roasting leaching liquid is carried out by adding quicklime to remove phosphorus, and the desilication agent selects aluminum hydroxide, so that impurity elements meet the national standard requirements. At present, a large number of documents and patent reports are all remained in pure silicon and phosphorus removal, and the obtained impurity removal slag needs to be subjected to secondary vanadium extraction or is directly piled up with residues, so that the impurity removal slag is used as waste, and resource waste is caused.
Disclosure of Invention
The invention aims to solve the problems of resource waste and environmental pollution caused by storing impurity-removed slag obtained by removing silicon as waste, low purity of aluminum silicate obtained by removing silicon and the like in the prior art, and provides a preparation method of aluminum silicate.
In order to achieve the above object, the present invention provides a method for preparing aluminum silicate, comprising the steps of:
(1) Adding aluminum sulfate into the silicon-containing alkaline vanadium liquid, reacting under stirring, and then filtering and washing to obtain precipitation slag;
(2) Adding the precipitate slag obtained in the step (1) into water for pulping, then adding glucose for reaction, then adding ethanol for reaction, and then filtering, washing and drying;
wherein the molar ratio of the aluminum sulfate to the silicon in the silicon-containing alkaline vanadium solution is 1:2-3.
Preferably, in the step (1), the concentration of silicon in the silicon-containing alkaline vanadium solution is 0.6-3g/L, and the pH value of the silicon-containing alkaline vanadium solution is 9.5-10.5.
Preferably, in step (1), the reaction temperature is 95-99 ℃ and the reaction time is 30-60min.
Preferably, the specific process of the step (2) includes: adding the precipitate slag obtained in the step (1) into water, pulping at 95-99 ℃, then adding glucose at 95-99 ℃ for heat preservation reaction, then cooling to 45-60 ℃, adding ethanol for heat preservation reaction, and then filtering, washing and drying.
Preferably, in step (2), the solids to liquid ratio of the precipitation slag and water is 1g:1.5-2.5mL.
Preferably, in step (2), the weight ratio of the glucose to the precipitate slag is 0.3-0.5:100.
Preferably, in the step (2), the ethanol is added in an amount of 0.05 to 0.3% by volume of the solution obtained by adding glucose for the reaction.
Preferably, in the step (2), glucose is added for a reaction time of 80-180min for the incubation reaction.
Preferably, in the step (2), ethanol is added for reaction at a temperature of 30-60min.
Preferably, in step (2), the beating time is 30-45min.
The sodium vanadate solution obtained after water leaching in the vanadium slag sodium roasting-water leaching vanadium extraction process is treated by the method, and the high-purity aluminum silicate product can be obtained on the premise of ensuring high-efficiency removal of impurity silicon, so that the emission of waste is reduced, and the recycling is realized. The obtained high-purity aluminum silicate product can be directly used as a raw material for producing pigments and coatings.
Detailed Description
The following describes specific embodiments of the present invention in detail. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
The endpoints and any values of the ranges disclosed herein are not limited to the precise range or value, and are understood to encompass values approaching those ranges or values. For numerical ranges, one or more new numerical ranges may be found between the endpoints of each range, between the endpoint of each range and the individual point value, and between the individual point value, in combination with each other, and are to be considered as specifically disclosed herein.
The invention provides a preparation method of aluminum silicate, which comprises the following steps:
(1) Adding aluminum sulfate into the silicon-containing alkaline vanadium liquid, reacting under stirring, and then filtering and washing to obtain precipitation slag;
(2) Adding the precipitate slag obtained in the step (1) into water for pulping, then adding glucose for reaction, then adding ethanol for reaction, and then filtering, washing and drying;
wherein the molar ratio of the aluminum sulfate to the silicon in the silicon-containing alkaline vanadium solution is 1:2-3.
In the present invention, in the step (1), the silicon-containing alkaline vanadium solution may be a sodium vanadate solution obtained after leaching in a process of sodium roasting-leaching vanadium of vanadium slag.
In a preferred embodiment, in step (1), the concentration of silicon in the silicon-containing alkaline vanadium solution is 0.6-3g/L and the pH of the silicon-containing alkaline vanadium solution is 9.5-10.5.
Further preferably, the concentration of vanadium in the silicon-containing alkaline vanadium solution is 10-60 g/L.
In a preferred embodiment, in step (1), the reaction temperature is 95℃to 99℃and the reaction time is 30 to 60 minutes. Specifically, the reaction temperature may be 95 ℃, 95.5 ℃, 96 ℃, 96.5 ℃, 97 ℃, 97.5 ℃, 98 ℃, 98.5 ℃, or 99 ℃.
In a preferred embodiment, the specific process of step (2) includes: adding the precipitate slag obtained in the step (1) into water, pulping at 95-99 ℃, then adding glucose at 95-99 ℃ for heat preservation reaction, then cooling to 45-60 ℃, adding ethanol for heat preservation reaction, and then filtering, washing and drying. In particular embodiments, the beating temperature may be 95 ℃, 95.5 ℃, 96 ℃, 96.5 ℃, 97 ℃, 97.5 ℃, 98 ℃, 98.5 ℃, or 99 ℃; the temperature of the added glucose for heat preservation reaction can be 95 ℃, 95.5 ℃, 96 ℃, 96.5 ℃, 97 ℃, 97.5 ℃, 98 ℃, 98.5 ℃ or 99 ℃; the temperature of the heat-preserving reaction by adding ethanol may be 45 ℃, 46 ℃, 47 ℃, 48 ℃, 49 ℃, 50 ℃, 51 ℃, 52 ℃, 53 ℃, 54 ℃, 55 ℃, 56 ℃, 57 ℃, 58 ℃, 59 ℃ or 60 ℃.
In the present invention, the precipitated slag obtained by washing in the step (1) is directly used in the step (2), and thus the weight of the precipitated slag in the step (2) in the present invention is the wet weight of the precipitated slag.
In a preferred embodiment, in step (2), the solids to liquid ratio of the precipitate slag to water is 1g:1.5-2.5mL. Specifically, the solids to liquid ratio of the precipitation slag to water may be 1g:1.5mL, 1g:1.6mL, 1g:1.7mL, 1g:1.8mL, 1g:1.9mL, 1g:2mL, 1g:2.1mL, 1g:2.2mL, 1g:2.3mL, 1g:2.4mL, or 1g:2.5mL.
In a preferred embodiment, in step (2), the weight ratio of glucose to the precipitation slag is 0.3-0.5:100. Specifically, the weight ratio of the glucose to the precipitation slag may be 0.3:100, 0.35:100, 0.4:100, 0.45:100, or 0.5:100.
In a preferred embodiment, in step (2), the ethanol is added in an amount of 0.05 to 0.3% by volume of the solution obtained by adding glucose for the reaction.
In a preferred embodiment, in step (2), the reaction time of the incubation reaction with glucose is 80-180min. Specifically, the time period can be 80min, 90min, 100min, 110min, 120min, 130min, 140min, 150min, 160min, 170min or 180min.
In a preferred embodiment, in step (2), the reaction time of the incubation reaction with ethanol is 30-60min. Specifically, it can be 30min, 35min, 40min, 45min, 50min, 55min or 60min.
In a preferred embodiment, in step (2), the beating time is 30-45min. Specifically, it can be 30min, 31min, 32min, 33min, 34min, 35min, 36min, 37min, 38min, 39min, 40min, 41min, 42min, 43min, 44min or 45min.
In a preferred embodiment, in step (2), washing is performed with hot water. Further preferably, the temperature of the hot water is 80 to 95 ℃.
The present invention will be described in detail by way of examples, but the scope of the present invention is not limited thereto.
The silicon-containing alkaline vanadium solution used in the following examples and comparative examples is a sodium vanadate solution obtained after water leaching in a vanadium slag sodium roasting-water leaching vanadium extraction process.
Example 1
(1) Adding aluminum sulfate into a silicon-containing alkaline vanadium solution (pH=9.5, si concentration is 0.6g/L, and vanadium concentration is 10 g/L), stirring and reacting for 30min at 95 ℃ with the molar ratio of the aluminum sulfate to Si in the silicon-containing alkaline vanadium solution being 1:3, and then filtering and washing to obtain precipitation slag;
(2) Pulping the precipitate slag obtained in the step (1) for 30min at 95 ℃, adding glucose (the ratio of the wet weight of the glucose to the wet weight of the precipitate slag is 0.3:100) at 95 ℃ for heat preservation reaction for 80min, adding ethanol for heat preservation reaction for 30min when naturally cooling to 45 ℃, wherein the addition amount of the ethanol is 0.05 volume percent of the volume of the solution obtained by heat preservation reaction of the added glucose, and then filtering, washing with hot water and drying.
Example 2
(1) Adding aluminum sulfate into a silicon-containing alkaline vanadium solution (pH=10, si concentration is 1.6g/L, vanadium concentration is 20 g/L), stirring and reacting for 45min at 97 ℃ with the molar ratio of the aluminum sulfate to Si in the silicon-containing alkaline vanadium solution being 1:3, and then filtering and washing to obtain precipitation slag;
(2) Pulping the precipitation slag obtained in the step (1) for 38min at 96 ℃, adding glucose (the ratio of the wet weight of the glucose to the wet weight of the precipitation slag is 0.4:100) at 96 ℃ for heat preservation reaction for 140min, naturally cooling to 50 ℃, adding ethanol for heat preservation reaction for 45min, wherein the addition amount of the ethanol is 0.18 volume percent of the volume of the solution obtained by heat preservation reaction of the added glucose, and then filtering, washing with hot water and drying.
Example 3
(1) Adding aluminum sulfate into a silicon-containing alkaline vanadium solution (pH=10, si concentration is 3g/L, and vanadium concentration is 25 g/L), stirring and reacting for 60min at 98 ℃ with the molar ratio of the aluminum sulfate to Si in the silicon-containing alkaline vanadium solution being 1:3, and then filtering and washing to obtain precipitation slag;
(2) Pulping the precipitate slag obtained in the step (1) for 45min at 98 ℃, adding glucose (the ratio of the wet weight of the glucose to the wet weight of the precipitate slag is 0.5:100) at 98 ℃ for heat preservation reaction for 180min, adding ethanol for heat preservation reaction for 60min when naturally cooling to 60 ℃, wherein the addition amount of the ethanol is 0.3 volume percent of the volume of the solution obtained by heat preservation reaction of the added glucose, and then filtering, washing with hot water and drying.
Example 4
(1) Adding aluminum sulfate into a silicon-containing alkaline vanadium solution (pH=9.5, si concentration is 0.6g/L, and vanadium concentration is 30/L), stirring and reacting for 30min at 95 ℃ with the molar ratio of the aluminum sulfate to Si in the silicon-containing alkaline vanadium solution being 1:2.5, and then filtering and washing to obtain precipitation slag;
(2) Pulping the precipitate slag obtained in the step (1) for 30min at 95 ℃, adding glucose (the ratio of the wet weight of the glucose to the wet weight of the precipitate slag is 0.3:100) at 95 ℃ for heat preservation reaction for 80min, adding ethanol for heat preservation reaction for 30min when naturally cooling to 45 ℃, wherein the addition amount of the ethanol is 0.05 volume percent of the volume of the solution obtained by heat preservation reaction of the added glucose, and then filtering, washing with hot water and drying.
Example 5
(1) Adding aluminum sulfate into a silicon-containing alkaline vanadium solution (pH=10, si concentration is 1.6g/L, vanadium concentration is 20 g/L), stirring and reacting for 45min at 97 ℃ with the molar ratio of the aluminum sulfate to Si in the silicon-containing alkaline vanadium solution being 1:2, and then filtering and washing to obtain precipitation slag;
(2) Pulping the precipitation slag obtained in the step (1) for 38min at 96 ℃, adding glucose (the ratio of the wet weight of the glucose to the wet weight of the precipitation slag is 0.4:100) at 96 ℃ for heat preservation reaction for 140min, naturally cooling to 50 ℃, adding ethanol for heat preservation reaction for 45min, wherein the addition amount of the ethanol is 0.18 volume percent of the volume of the solution obtained by heat preservation reaction of the added glucose, and then filtering, washing with hot water and drying.
Comparative example 1
The procedure of example 1 was followed, except that in step (1), the molar ratio of aluminum sulfate to Si in the silicon-containing alkaline vanadium solution was 1:3.2.
Comparative example 2
The procedure of example 1 was followed, except that in step (1), the molar ratio of aluminum sulfate to Si in the silicon-containing alkaline vanadium solution was 1:1.8.
Test case
1. The Si concentration in the filtrate obtained in the step (1) in the examples and comparative examples was measured, and the results are shown in Table 1.
TABLE 1
| Numbering device | Si concentration g/L in silicon-containing alkaline vanadium solution | Si concentration g/L in filtrate |
| Example 1 | 0.6 | 0.025 |
| Example 2 | 1.6 | 0.038 |
| Example 3 | 3.0 | 0.15 |
| Example 4 | 0.6 | 0.015 |
| Example 5 | 1.6 | 0.018 |
| Comparative example 1 | 0.6 | 0.082 |
| Comparative example 2 | 0.6 | 0.014 |
2. The purity of the aluminum silicate obtained in the examples and comparative examples was measured, and the results are shown in Table 2.
TABLE 2
| Numbering device | Aluminum silicate purity/% |
| Example 1 | 99.56 |
| Example 2 | 99.68 |
| Example 3 | 99.79 |
| Example 4 | 99.62 |
| Example 5 | 99.74 |
| Comparative example 1 | 99.66 |
| Comparative example 2 | 94.28 |
From the results shown in tables 1 and 2, it is apparent that the method of the present invention can effectively remove silicon impurities in the silicon-containing alkaline vanadium solution, and can obtain high-purity aluminum silicate products.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, a number of simple variants of the technical solution of the invention are possible, including combinations of the individual technical features in any other suitable way, which simple variants and combinations should likewise be regarded as being disclosed by the invention, all falling within the scope of protection of the invention.
Claims (5)
1. A method for preparing aluminum silicate, comprising the steps of:
(1) Adding aluminum sulfate into the silicon-containing alkaline vanadium liquid, reacting under stirring, and then filtering and washing to obtain precipitation slag;
(2) Adding the precipitate slag obtained in the step (1) into water, pulping at 95-99 ℃, then adding glucose at 95-99 ℃ for heat preservation reaction, then cooling to 45-60 ℃ and adding ethanol for heat preservation reaction, and then filtering, washing and drying;
wherein the molar ratio of the aluminum sulfate to the silicon in the silicon-containing alkaline vanadium solution is 1:2-3;
in the step (1), the concentration of silicon in the silicon-containing alkaline vanadium solution is 0.6-3g/L, and the pH value of the silicon-containing alkaline vanadium solution is 9.5-10.5;
in the step (1), the reaction temperature is 95-99 ℃ and the reaction time is 30-60min;
in the step (2), the weight ratio of the glucose to the precipitation slag is 0.3-0.5:100;
in the step (2), the addition amount of the ethanol is 0.05-0.3% by volume of the solution obtained by adding glucose for reaction.
2. The method of producing aluminum silicate according to claim 1, wherein in the step (2), the solid-to-liquid ratio of the precipitation slag and water is 1g:1.5-2.5mL.
3. The method for producing aluminum silicate according to claim 1, wherein in the step (2), the reaction time for the incubation reaction with glucose is 80 to 180 minutes.
4. The method for producing aluminum silicate according to claim 1, wherein in the step (2), the reaction time of the heat-retaining reaction by adding ethanol is 30 to 60 minutes.
5. The method of producing aluminum silicate according to claim 2, wherein in step (2), the beating time is 30 to 45min.
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