CN1005104B - Method for preparing high-modulus water glass by wet process - Google Patents
Method for preparing high-modulus water glass by wet process Download PDFInfo
- Publication number
- CN1005104B CN1005104B CN87104622.9A CN87104622A CN1005104B CN 1005104 B CN1005104 B CN 1005104B CN 87104622 A CN87104622 A CN 87104622A CN 1005104 B CN1005104 B CN 1005104B
- Authority
- CN
- China
- Prior art keywords
- water glass
- modulus
- wet
- glass
- modulus water
- 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
Links
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 41
- 235000019353 potassium silicate Nutrition 0.000 title claims abstract description 33
- 235000015110 jellies Nutrition 0.000 claims abstract description 16
- 239000008274 jelly Substances 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 14
- 235000012239 silicon dioxide Nutrition 0.000 claims description 14
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 11
- 238000001035 drying Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract description 3
- 229910017053 inorganic salt Inorganic materials 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000011734 sodium Substances 0.000 description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 5
- 239000004576 sand Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 235000017550 sodium carbonate Nutrition 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000001117 sulphuric acid Substances 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- 229920000297 Rayon Polymers 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Landscapes
- Silicon Compounds (AREA)
- Glass Compositions (AREA)
Abstract
The invention relates to a production method of inorganic salt chemical products, in particular to an improvement on the existing wet-process water glass process. The wet-process high-modulus water glass production method takes the wet-process low-modulus water glass as a raw material to react with sulfuric acid and then is treated to obtain the high-water-content silicate jelly, and then the wet-process low-modulus water glass is taken as a raw material to be fully mixed with the silicate jelly to obtain the high-modulus water glass, so that the wet-process is perfected, the wet-process can completely replace a dry-process with higher energy consumption to produce the high-modulus water glass, and the energy is saved.
Description
The invention relates to the manufacture method of chemical industry of inorganic salt product, especially to having the improvement of wet method system sodium silicate process now
Water glass (has another name called water glass, be commonly called as bubble flower alkali), two kinds of production methods of dry method and wet method are arranged in its production process usually, the former carries out high-temperature fusion by stove with silica sand and soda ash to generate block vitreum under 1300-1400 ℃ of temperature, make liquid soluble glass through dissolving, clarification again, modulus is generally 2.3-2.9.The latter pumps in the reactor silica sand and liquid caustic soda at high temperature (about 170 ℃) and pressure (about 6kgf/cm
2) state reaction down, directly make liquid soluble glass, modulus is generally (being low modulus water glass) below 2.8.Along with the industrial expansion energy is will be more nervous, this give the big and utilization ratio of power consumption only the dry production of 20-40% bring big prestige association, by product is more aborning for raw material soda ash in addition, influences the soda ash industrial scale, this also brings unfavorable factor to dry production.And wet production is because power consumption few (only for dry method 1/6～1/3), raw material more easily obtains and throughput is big, the low advantage that demonstrates it gradually of labour intensity.
But at present wet processing has an outstanding shortcoming, and that is exactly, and it generally can only produce modulus less than 2.8 low modulus water glass.Its reason mainly is the restriction that is subjected to processing condition, as, temperature, pressure generally can not rise so high (this actual use of actual design manufacturing, factory with the pressurized reactor is relevant).It is extensive that this just makes that the use field of wet method product can not show a candle to the dry method product.Bring very big obstacle for applying of wet method technology.How improving the modulus of wet method water glass with a most economical approach, use to adapt to widely, is the long-term problems of inquiring into of people.The clear 51-147500 of document Usup3712941 and JP has proposed a kind ofly to prepare the method for modulus greater than 4 EHM extra high modulus water glass with silica gel powder, white carbon black and modulus greater than 3 soluble glass of high modulus, and this provides a feasible approach for fields such as insulating material, silicate foam material can obtain EHM extra high modulus water glass easily undoubtedly.But this method is not useable in the wet processing.Because, if improve the modulus of wet method water glass to obtain common soluble glass of high modulus with expensive silica gel powder, white carbon black.Obviously be no practicality.
The method that the objective of the invention is the shortcoming that exists at present wet processing and above-mentioned patent documentation is not suitable for wet processing and a kind of technology of proposing is simple, reliable, the method for the producing soluble glass of high modulus by wet process that is suitable for.
The method of producing soluble glass of high modulus by wet process of the present invention is that the low modulus water glass with wet method system is raw material and sulfuric acid reaction and the silicic acid jelly that obtains a kind of high-moisture after simple process.Low modulus water glass with wet method system is that raw material and silicic acid jelly thorough mixing promptly get soluble glass of high modulus again.Now in conjunction with the accompanying drawings the method for producing soluble glass of high modulus by wet process is described below (annotate: accompanying drawing is a process flow sheet):
The first step (being Fig. 1): with silica sand (1) with pump in the reactor (3), after liquid caustic soda (2) mixes at 4～7kgf/cm
2Stirring reaction was emitted after 5～8 hours under pressure and 150～170 ℃ of temperature, through vacuum suction filter device (4) unreacted silica sand and work in-process water glass was separated, and promptly got low modulus water glass (5).Modulus M＜2.8.
Second step (being Fig. 2): with (20～40 ° of the low modulus water glass (5) of the first step gained
) slowly adding has filled in the chemical combination groove (7) of dilute sulphuric acid (6) (20～50%) and carries out chemical combination under room temperature and agitation condition.Be the liquid of homogeneous transparent this moment.Its liquid sent in the gel groove (8) left standstill sour glue 10～15 hours.Then its colloid is divided into fritter and uses the tap water rinsing for several times, until no SO
<math><msup><mi></mi><msub><mi>-2</mi></msup><mi>4</mi></msub></math> Till the root.At last the blob of viscose after the rinsing is sent in the drying plant (9), desiccated surface moisture content and structure moisture content are 1～2 hour under 50～80 ℃ of temperature, promptly get silicic acid jelly (10).Water content 50～85% contains Sio
215～50%.
The low modulus water glass (5) of the 3rd step (being Fig. 3) with the first step gained drops in the allotment pot (11) in proportion with the second silicic acid jelly (10) that goes on foot gained, fully stirs under 70～80 ℃ of temperature and promptly gets required soluble glass of high modulus (12).
The first step is existing wet processing in the above-mentioned technology, and second step and the 3rd step then are improvement contents proposed by the invention.
If adopted the present invention, wet processing also can be produced soluble glass of high modulus so.Obviously also can replace traditional dry process, can save 47～63% the energy, for helping the understanding of the present invention, it is as follows to give an actual example:
Example 1 prepares silicic acid jelly with low modulus water glass and dilute sulphuric acid
A raw material: low modulus water glass Na
2O2.67Sio
2, 36 °
; Sulfuric acid H
2SO
4, 31%;
B ratio: water glass 170ml: dilute sulphuric acid 170ml=1: 1;
C compound method: water glass added in the dilution heat of sulfuric acid lentamente under agitation carry out.This moment, solution was transparent even shape, and it was left standstill gel 15 hours;
D washes glue: with decantation with above-mentioned c gained colloid (should be divided into little bulk in advance) in clear water rinsing for several times, until no SO
<math><msup><mi></mi><msub><mi>-2</mi></msup><mi>4</mi></msub></math> Till (available Bacl checks it);
The e drying: desiccated surface moisture content and structure moisture content are 2 hours under 60 ℃ of temperature, promptly get silicic acid jelly;
The f specification: be the transparence blob of viscose, water content 75～79.8% contains Sio
220.2～25%.
Example 2 is with silicic acid jelly modulation soluble glass of high modulus
A raw material: low modulus water glass Na
2O2.67SiO
2, 36 °
Sio
2=24.7%, Na
2O=9.55%; Silicic acid jelly Sio
2=22.6%;
B preparation soluble glass of high modulus Na
2O3.6Sio
2;
The c consumption calculates: because of silicic acid jelly contains SiO
222.6%, preparation water glass Na
2O3.6SiO
2, SiO
2Should be 33.25%, so SiO
2Should increase by 8.55%.
If with 300ml water glass Na
2O2.67SiO
2Prepare water glass Na
2O3.6SiO
2Required silicic acid jelly is:
(8.55% * 1.33 * 300) * 1/0.226=146(gram) be that 300ml low modulus water glass (modulus M=2.67) will be made into soluble glass of high modulus (modulus M=3.6) and should add silicic acid jelly 146 grams;
D compound method: take by weighing silicic acid jelly 146 grams, under 70～80 ℃ of temperature, add in the 300ml low modulus water glass and fully and stir, promptly get soluble glass of high modulus;
E result detects:
1. modulus M=3.63, SiO
2=25.43%,
Na
2O＝7.23%，36°
;
2. the evaporation concentration to 41 of heating °
In time, measured, modulus M=3.60
SiO
2＝27.88%，Na
2O＝8.0%;
3. outward appearance is light yellow, and transparency is good.
Claims (2)
1, the method for producing soluble glass of high modulus by wet process is characterized in that: with wet method system, modulus is that water glass and the silicic acid jelly below 2.8 directly is deployed into soluble glass of high modulus;
2, the method for producing soluble glass of high modulus by wet process according to claim 1 is characterized in that: said silicic acid jelly is that the low modulus water glass with wet method system is that raw material is simply made, and its water content is 75～79.8%, and dioxide-containing silica is 20.2～25%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87104622.9A CN1005104B (en) | 1987-07-01 | 1987-07-01 | Method for preparing high-modulus water glass by wet process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87104622.9A CN1005104B (en) | 1987-07-01 | 1987-07-01 | Method for preparing high-modulus water glass by wet process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1030216A CN1030216A (en) | 1989-01-11 |
| CN1005104B true CN1005104B (en) | 1989-09-06 |
Family
ID=4814950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87104622.9A Expired CN1005104B (en) | 1987-07-01 | 1987-07-01 | Method for preparing high-modulus water glass by wet process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1005104B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322947C (en) * | 2005-12-19 | 2007-06-27 | 华中科技大学 | Method for regenerating water-glass old sand |
| CN102225770B (en) * | 2011-03-23 | 2015-08-19 | 张振慧 | The method of wet method Effect of Catalysis In Petrochemistry agent dedicated water glass |
| CN106829982B (en) * | 2017-03-23 | 2018-10-12 | 山东鲁北企业集团总公司 | A kind of preparation method of wet method waterglass |
| CN110467187B (en) * | 2019-09-05 | 2021-05-28 | 中国建筑材料科学研究总院有限公司 | Method for increasing modulus of water glass solution and water glass solution prepared by method |
| CN113353943B (en) * | 2021-07-14 | 2022-07-01 | 青岛君强新材料有限公司 | Method for simultaneously preparing white carbon black and high-modulus water glass by using metal silicon powder and white carbon black |
-
1987
- 1987-07-01 CN CN87104622.9A patent/CN1005104B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1030216A (en) | 1989-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1005104B (en) | Method for preparing high-modulus water glass by wet process | |
| US3549317A (en) | Process for utilizing fluorosilicic acid | |
| Nabar et al. | Studies in oxycellulose: Part II. The estimation of− COOH groups in cellulosic materials | |
| GB1062599A (en) | Process for the production of a wet-precipitated water-repellent silica | |
| CN102583252B (en) | Method for producing sodium periodate | |
| KR870001113A (en) | Method for preparing calcium fluorosilicate | |
| US3692475A (en) | Method for making crystalline zeolite y | |
| CN106400118A (en) | Surface modification method for preparing anhydrous calcium sulfate whisker difficult to dissolve in water | |
| US2572578A (en) | Method of preparing silica sols | |
| Suzuki | Studies on the manufacture of algin from brown algae | |
| SE8903657L (en) | PROCEDURES FOR THE PREPARATION OF N-PHOSPHONOMETHYLGYLINE | |
| US2385438A (en) | Starch product | |
| CN86106726A (en) | Production of chitin by stepwise acid process | |
| GB762635A (en) | Process of producing cryolite from washing and waste liquors containing sodium fluoride | |
| GB709465A (en) | Improvements in or relating to the production of silica hydrosols | |
| GB610549A (en) | A process for the manufacture of basic zirconium sulphate | |
| CN101676208A (en) | Co-production technology of sodium silicate and gypsum whisker with mirabilite method | |
| SU137113A1 (en) | The method of obtaining highly dispersed and hydrophobic silica powder | |
| SU710953A1 (en) | Method of producing rutile seeds for preparing titanium dioxide | |
| US1863266A (en) | Process for the manufacture of insecticides and method of making same | |
| CN1004622B (en) | Process for production of water soluble industrial lithium metasilicate | |
| SU37783A1 (en) | A method of making resins for varnishes and plastics | |
| SU763275A1 (en) | Method of producing lead oxides | |
| GB972644A (en) | Production of calcium silicate fillers | |
| GB319746A (en) | Processes of making zeolites |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| C13 | Decision | ||
| C14 | Grant of patent or utility model | ||
| C19 | Lapse of patent right due to non-payment of the annual fee |