CN1014880B - Hydrothermal method for making microporous glass using diatomite as raw material - Google Patents
Hydrothermal method for making microporous glass using diatomite as raw materialInfo
- Publication number
- CN1014880B CN1014880B CN 88105499 CN88105499A CN1014880B CN 1014880 B CN1014880 B CN 1014880B CN 88105499 CN88105499 CN 88105499 CN 88105499 A CN88105499 A CN 88105499A CN 1014880 B CN1014880 B CN 1014880B
- Authority
- CN
- China
- Prior art keywords
- glass
- diatomite
- raw material
- sio
- gram
- 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.)
- Expired
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C11/00—Multi-cellular glass ; Porous or hollow glass or glass particles
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
Abstract
The present invention relates to a new process way for manufacturing microporous glass by taking diatomite as the raw material, which comprises the following steps: SiO-[2] and Al-[2]O-[3] are introduced by taking the diatomite as the raw material to formulate Na-[2]O-CaO-Al-[2]O-[3]-B-[2]O-[3]-SiO-[2] frit; the hydrothermal treatment is carried out on a charge before the glass is smelted in order to reduce the glass melted temperature and shorten the glass melted time. The heat treatment and the acid treatment are carried out on the glass obtained by smelting to leach out the soluble phase and impurities brought in the diatomite, thereby, the microporous glass which can be widely used in biologic industry and chemical industry can be obtained, wherein the pore diameter of the microporous glass is from scores of angstroms and some thousands of angstroms. The method has the advantages of low cost of raw material, simple smelting and high microporous glass yield.
Description
The present invention relates to the glass manufacturing, particularly relate to a kind of diatomite as raw material of using, make the novel process of micropore glass through hydrothermal treatment consists.
Micropore glass is an intermediate product of making vagcor, is some Na
2O-B
2O
3-SiO
2Glass (is divided into the Na that is insoluble to acid through Overheating Treatment
2O-B
2O
3Reach mutually be insoluble to acid high silicon phase), (leaching goes out Na in acid treatment
2O-B
2O
3Phase) obtains (U.S.P2106774,1938).Change original Na
2-B
2O
3-SiO
2The composition of glass, phase separation temperature, time and acid treatment condition (concentration, the temperature of acid), can obtain the micropore glass (USP3843341,1974) of bore dia from tens dusts to, 2,000 dusts. micropore glass also can be used for gas delivery, liquid separation, immobilized enzyme except that being used for making, makes support of the catalyst, cultivates unicellular organism etc. the vagcor.The micropore glass bore dia that this respect uses is generally bigger.From Na
2O-B
2O
3-SiO
2Be that the bigger micropore glass of glass pore-creating diameter need improve B
2O
3Reduce SiO
2Content.B
2O
3Somewhat expensive, and the overwhelming majority is soaked plate and is gone out in the acid treatment process; And if desire the micropore glass that the manufacturing hole diameter reaches one, 2,000 dusts, also need do reaming sometimes to handle, yield is very low, very uneconomical (silicate journal VOl.12, No1984).
Purpose of the present invention provide a kind of new be raw material with diatomite, with the hydrothermal method processing, can make the technology of micropore glass in a large number, economically, to satisfy biotechnology, the chemical engineering needs growing to this material.
The diatomite that the present invention is little with granularity, specific surface is big is introduced SiO
2And Al
2O
3Used diatomaceous chemical constitution (weight %) is (butt):
SiO
2Al
2O
3Fe
2O
3CaO MgO Na
2O K
2O
71.5 19.0 5.32 0.23 0.91 0.41 2.62
Size range≤0.05-30 micron, 50% average meso-position radius is 2.99 microns.Introduce CaO with lime and introduce Na with the aqueous solution of NaOH
2O, use B(OH)
3Introduce B
2O
3Found Na
2O-CaO-Al
2O
3-B
2O
3-SiO
2Glass.Before glass smelting, earlier admixtion is made 115-200 ℃ hydrothermal treatment consists.Diatomite decomposes under the effect of alkali, water in the hydrothermal treatment consists process, with other anabolic reactions, generates silicate, borate solution.Be used further to fusion cast glass after the oven dry.The glass that obtains is done the thermal treatment of differing temps, time, remake acidleach and analyse processing, can obtain micropore glass.Impurity in the diatomite is (as Fe
2O
3) in the phase-splitting heat treatment process, all enter solvable phase and go out in the leaching of acid treatment process, not influencing the quality of the micropore glass that makes, the micropore glass that obtains is colourless.Change original Na
2O-CaO-Al
2O
3-B
2O
3-SiO
2The composition of glass and phase-splitting heat-treat condition can make the micropore glass of bore dia from tens dusts to several thousand dusts.
The present invention compares with the existing technology of making micropore glass, and following advantages are arranged:
1. be that raw material is introduced SiO with diatomite
2And Al
2O
3, introduce CaO with lime, introduce Na with the aqueous solution of NaOH
2O, raw materials cost reduces by more than 50.
2. owing to adopted elder generation that admixtion is made the way of hydrothermal treatment consists, the glass smelting temperature can reduce by 200 ℃, time can shorten 2/3rds, and process facility can be simplified, the life-span can prolong, and energy consumption can reduce by 1/3rd.
With traditional from Na
2O-B
2O
3-SiO
2Glass is made micropore glass relatively, makes the identical micropore glass in aperture, B
2O
3Consumption subtracts greatly.As the manufacturing hole diameter is the micropore glass of 1000 dusts, B
2O
3Consumption can reduce over half.
Embodiment:
The manufacturing of embodiment 1 bore dia 100 dust micropore glass
Form (weight %) by following glass:
SiO
2Al
2O
3B
2O
3CaO Na
2O
44.68 11.86 21.59 16.20 5.67
Join compound.Make 100 gram glass, take by weighing
Diatomite (dry accounts for 83.65%) 74.6 grams;
Lime (containing CaO100%) 16.2 grams;
Boric acid (containing B(OH)
3100%) 38.4 grams;
NaOH(is to contain NaOH100%) 7.33 grams;
Place stainless steel vessel, add water (its amount is four times of glass weight), stir, make to be muddy, make 20 hours hydrothermal treatment consists, press the well-established law oven dry at 115-120 ℃.Compound is placed ceramic crucible, at 1200-1250 ℃ of following fusion cast glass.Melting time adds from material kept the back meter about 1-2 hour.The phase-splitting thermal treatment temp is that 650 ℃, time are 20 hours.The glass of phase-splitting is done acid treatment with 1NHCl under 70-100 ℃ in water-bath.The acid solution capacity is 4-5 a times of glass.Required time is decided by thickness of sample, acid treatment temperature, acid concentration and sample pore size.To the condition of present embodiment, can there be every day the glass of 1 mm thick to become micropore glass.After acid treatment was finished, the micropore glass that obtains was colourless.Acid solution is poured out, and water flushing goods-micropore glass is eliminated the material that acid and leaching go out, again through oven dry, pulverizing, levigate, sieve, by the granularity stepping, can use for different needs.
The manufacturing of embodiment 2 bore dias 500 dust micropore glass
Form (weight %) by following glass
SiO
2Al
2O
3B
2O
3CaO Na
2O
41.78 11.11 26.92 14.81 5.38
Join compound.Make 100 gram glass, take by weighing
Diatomite (dry accounts for 83.65%) 70 grams
Lime (containing CaO100%) 14.81 grams;
Boric acid (containing B(OH)
3100%) 47.8 grams;
NaOH(is to contain NaOH100%) 6.94 grams;
Be prepared by example 1, except that the glass phase separation temperature is 700 ℃, all the other conditions are all with example 1.
The manufacturing of embodiment 3 bore dias 1000 dust micropore glass
Glass composition, admixtion and example 1 are same, and except that the phase-splitting thermal treatment temp is 700 ℃, all the other manufacturing conditions are all with example 1.
The manufacturing of embodiment 4 bore dias 1000 dust micropore glass
Form (weight %) by following glass
SiO
2Al
2O
3B
2O
3CaO Na
2O
35-50 10-13 20-30 10-17 4-10
Join compound.Make 100 gram glass, take by weighing
Diatomite (dry accounts for 83.65%) 58.5-83.6 gram
Lime 10-17 gram;
NaOH 5.16-12.9 gram;
B(OH)
335.5-53.3 gram
All the other are with embodiment 1.
All among the embodiment, diatomaceous size range is≤0.05～30 micron.
Claims (2)
1, a kind of with diatomite as raw material, adopt hydrothermal treatment consists to make the method for micropore glass, it is characterized in that:
(1) introduces SIO with diatomite as raw material
2And Al
2O
3, introduce CaO, introduce Na with lime with NaOH
2O, usefulness B (OH)
3Introduce B
2O
3
Its batching scope is (making 100 gram glass):
Diatomite (dry accounts for 83.65%) 58.5-83.6 gram
Lime 10-17 gram
NaOH 5.16-12.9 gram
B (OH)
335.5-53.3 gram
(2) admixtion was made hydrothermal treatment consists 20 hours at 115-200 ℃;
(3) prepare Na with admixtion through hydrothermal treatment consists
2O-CaO-Al
2O
3-B
2O
3-SIO
2Glass, the condition of founding are to add the material back 1200-1250 ℃ of insulation 1-2 hour;
(4) glass is carried out phase-splitting thermal treatment, condition is 650-700 ℃ of insulation 20 hours;
(5) acid treatment, the solvable phase of stripping, temperature is 70-100 ℃, and acid concentration is 1NHCl, and consumption is glass volumetrical 4-5 times, till glass is colourless;
(6) diatomite size range≤0.05-30 micron.
2, according to the method for claim 1, it is characterized in that: glass compositing range (weight %):
SIO
235-50
Al
2O
310-13
B
2O
320-30
CaO 10-17
Na
2O 4-10
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88105499 CN1014880B (en) | 1988-03-25 | 1988-03-25 | Hydrothermal method for making microporous glass using diatomite as raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88105499 CN1014880B (en) | 1988-03-25 | 1988-03-25 | Hydrothermal method for making microporous glass using diatomite as raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1036000A CN1036000A (en) | 1989-10-04 |
| CN1014880B true CN1014880B (en) | 1991-11-27 |
Family
ID=4833683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88105499 Expired CN1014880B (en) | 1988-03-25 | 1988-03-25 | Hydrothermal method for making microporous glass using diatomite as raw material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1014880B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2491238C2 (en) * | 2011-08-24 | 2013-08-27 | Закрытое акционерное общество "Стромизмеритель" | Mixture for making quenched cullet for foamed glass |
| CN105036302B (en) * | 2015-08-31 | 2018-11-13 | 浙江大学 | A kind of biologic packing material and its preparation method and application for strengthening Phosphate Sorption |
| CN108676572A (en) * | 2018-07-27 | 2018-10-19 | 成都源永科技发展有限公司 | A kind of process system and method for industrial sludge plasma gasification |
-
1988
- 1988-03-25 CN CN 88105499 patent/CN1014880B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1036000A (en) | 1989-10-04 |
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