CN102115092A - Method for producing high-modulus sodium silicate by adopting liquid phase method - Google Patents
Method for producing high-modulus sodium silicate by adopting liquid phase method Download PDFInfo
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- CN102115092A CN102115092A CN2011101018070A CN201110101807A CN102115092A CN 102115092 A CN102115092 A CN 102115092A CN 2011101018070 A CN2011101018070 A CN 2011101018070A CN 201110101807 A CN201110101807 A CN 201110101807A CN 102115092 A CN102115092 A CN 102115092A
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Abstract
The invention discloses a method for producing high-modulus sodium silicate by adopting a liquid phase method. The method comprises the following steps of: forming a sodium silicate aqueous solution of which the modulus M is between 2.4 and 2.6 by using quartz sand and a sodium hydroxide aqueous solution serving as raw materials; and adding byproduct silica gel powder produced by silica gel into the sodium hydroxide aqueous solution to generate high-modulus sodium silicate in which the molar ratio of SiO2 to Na2O is 3.1-3.4. The product obtained by the method is high-modulus sodium silicate with the modulus M between 3.1 and 3.4. Compared with a method for making aged quartz react in the prior art, the method disclosed by the invention has the advantages of readily available silica gel raw material, low price, short production flow, low energy consumption, easiness in realizing industrial production, high quality of prepared liquid sodium silicate and high product transparency.
Description
Technical field
The invention belongs to the inorganic silicate field, specifically a kind of liquid phase method is produced the production method of high-modulus sodium silicate.
Background technology
Water glass its silicon alkali commonly used is represented with M than claiming modulus.Usually the title of modulus M＜3 hangs down modulus, the title high-module of modulus M＞3.Produce water glass production method commonly used at present and comprise solid phase method and liquid phase method, solid phase method is at high temperature, dissolves the yellow soda ash and the quartz sand of certain mol proportion, can produce the water glass product of different moduluses.Its shortcoming is that energy consumption is bigger; Liquid phase method is that the sodium hydroxide of liquid and silica powder are pumped in the reactor, in high temperature (about 170 ℃) and high pressure (about 6kgf/cm2) reaction down, directly makes liquid soluble glass, and modulus is generally below 2.8; Chinese patent CN1030216 discloses " method of producing soluble glass of high modulus by wet process ", be to obtain a kind of silicic acid jelly with the low modulus water glass and the dilute sulphuric acid reaction of wet method system and after handling; Again this silicic acid jelly and low modulus water glass are allocated and promptly obtained soluble glass of high modulus, thus perfect wet processing.But wherein use the reaction of water glass and sodium sulfate gel that produces and the sodium sulfate that is generated that environment has been caused pollution.Patent 1044632A discloses the production method that a kind of hydrothermal method is produced sodium silicate solution.Be to adopt quartz sand and aqueous sodium hydroxide solution reaction, forming modulus M is the sodium silicate aqueous solution of 2.9:1; Be that work in-process and about the 1100 ℃ quartz through wearing out react with this sodium silicate aqueous solution again, produce high-modulus sodium silicate solution.But use the quartz behind high temperature ageing, the corresponding energy consumption that also improved, cost is also higher.
Summary of the invention
The object of the present invention is to provide another kind of liquid phase method to produce the method for high-modulus sodium silicate.To realize that obtaining the water glass modulus is 3.1～3.4; Its energy consumption is low, technology is simple, and raw material sources are extensive, and price byproduct silica-gel powder inexpensive, that can make silica gel production is utilized widely.
Technical scheme of the present invention comprises that with quartz sand and aqueous sodium hydroxide solution be raw material, and formation modulus M is 2.4～2.6 sodium silicate aqueous solution; Add the byproduct silica gel powder that silica gel is produced again, generate SiO
2To Na
2The O mol ratio is: the high-modulus sodium silicate of 3.1-3.4.
Concrete grammar may further comprise the steps:
(1) with the quartz sand and concentration 15～35% aqueous sodium hydroxide solutions of solid content 〉=99%, in the closed reactor that band stirs, control pressure is 10～15kg/cm
2Pressure, 150～190 ℃ of following stirring reactions of temperature 1～6 hour are emitted, and formation modulus M is 2.4～2.6 sodium silicate aqueous solution;
(2) be that 3.2～3.4:1 slowly adds the byproduct silica-gel powder that silica gel is produced according to quartz sand and silica-gel powder weight ratio in above-mentioned solution, the modulus of adjusting the modulus water glass is M3.1～3.4;
(3) feed steam, be warmed up to 130～150 ℃, be forced into 3～5kg/cm2, reacted 1～2 hour;
(4) material is put into storage tank, cooling is filtered into finished product.
The product that the present invention makes is that modulus M is 3.1～3.4 high-modulus sodium silicate, react comparison with the quartz of available technology adopting through wearing out, the silica-gel powder raw material is easy to get, cheap, and Production Flow Chart is short, energy consumption is low, be easy to realize suitability for industrialized production, the liquid sodium silicate quality of preparation is good, and the product transparency is good.
Embodiment
The invention will be further described below in conjunction with embodiment.
Embodiment 1: do three parallel sample:
The quartz sand of 3kg solid content 〉=99% and the aqueous sodium hydroxide solution of 5.3Kg30% add the closed reactor that band stirs, and heat up 160 ℃, and 10kg/cm keep-ups pressure
2, stirring reaction 3 hours, cooling reactor is emitted, form modulus M and be 2.4 sodium silicate aqueous solution; The by-product silica gel powder 0.8Kg that adds silica gel, adjusting the water glass modulus is 3.1, feeds steam, is warmed up to 130 ℃, being pressed onto pressure is 3kg/cm2, reacts 1～2 hour; Material is put into storage tank, and cooling is filtered, and makes modulus and be 3.1 liquid sodium silicate product, and the product transparency is good.
Its water glass performance is as shown in table 1:
Embodiment 2: do three parallel sample:
Take by weighing the quartz sand of 3kg solid content 〉=99% and the aqueous sodium hydroxide solution of 5.3Kg30%, add the closed reactor that band stirs, heat up 170 ℃, 12kg/cm keep-ups pressure
2, stirring reaction 4 hours, cooling reactor is emitted, form modulus M and be 2.5 sodium silicate aqueous solution; The by-product silica gel powder 1.2Kg that adds silica gel, adjusting the water glass modulus is 3.2, feeds steam, being warmed up to 140 ℃, to be pressurized to pressure be 4kg/cm2, reacted 1.5 hours; Material is put into storage tank, cooling, filter, make modulus and be 3.2 liquid sodium silicate product, the product transparency is good.
Its water glass performance is as shown in table 2:
Embodiment 3: do three parallel sample:
Take by weighing the quartz sand of 3kg solid content 〉=99% and the aqueous sodium hydroxide solution of 5.3Kg30%, add the closed reactor that band stirs, heat up 180 ℃, the 13kg/cm that keep-ups pressure pressurizes
2, stirring reaction 5 hours, cooling reactor, the by-product silica gel powder 1.5Kg of adding silica gel, adjusting the water glass modulus is 3.3, is warmed up to 145 ℃ once more, being pressurized to pressure is 4kg/cm
2, keeping 2 hours, cooling is filtered, and makes the liquid sodium silicate product of high-module, and the product transparency is good.
Its water glass performance is as shown in table 3:
Embodiment 4:
Take by weighing the quartz sand of 3kg solid content 〉=99% and the aqueous sodium hydroxide solution of 5.3Kg30%, add the closed reactor that band stirs, heat up 190 ℃, the 14kg/cm that keep-ups pressure pressurizes
2, stirring reaction 4 hours, cooling reactor, the by-product silica gel powder 1.7Kg of adding silica gel, adjusting the water glass modulus is 3.4, is warmed up to once more to heat up 150 ℃, being pressurized to pressure is 5kg/cm
2, keeping 2 hours, cooling is filtered, and makes the liquid sodium silicate product of high-module, and the product transparency is good.
Its water glass performance is as shown in table 4:
Claims (2)
1. the method that liquid phase method is produced high-modulus sodium silicate comprises that with quartz sand and aqueous sodium hydroxide solution be raw material, and formation modulus M is 2.4～2.6 sodium silicate aqueous solution; It is characterized in that, be to add the byproduct silica gel powder that silica gel is produced in 2.4～2.6 the sodium silicate aqueous solution at modulus M, generates SiO
2To Na
2The O mol ratio is: 3.1～3.4 high-modulus sodium silicate.
2. liquid phase method according to claim 1 is produced the production method of high-modulus sodium silicate, it is characterized in that, comprises the steps:
(1) with the quartz sand and concentration 15～35% aqueous sodium hydroxide solutions of solid content 〉=99%, in the closed reactor that band stirs, be 10～15kg/cm at pressure
2Pressure, temperature are stirring reaction 1～6 hour under 150～190 ℃ of conditions, emit, and form modulus M and be 2.4～2.6 sodium silicate aqueous solution;
(2) be that 3.2～3.4:1 slowly adds silica-gel powder according to quartz sand and silica-gel powder weight ratio in above-mentioned solution, the modulus of adjusting the modulus water glass is M3.1～3.4;
(3) feed steam, be warmed up to 130～150 ℃, be forced into 3～5kg/cm2, reacted 1～2 hour;
Material is put into storage tank, and cooling is filtered into finished product.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103754890A (en) * | 2013-12-17 | 2014-04-30 | 柳州东风化工股份有限公司 | Preparation method for anhydrous sodium metasilicate |
| CN105271276A (en) * | 2015-10-28 | 2016-01-27 | 昌邑市龙港无机硅有限公司 | Production process of high-modulus liquid sodium silicate |
| CN106966403A (en) * | 2017-04-24 | 2017-07-21 | 确成硅化学股份有限公司 | A kind of production method of liquid sodium silicate |
| CN111204772A (en) * | 2020-01-20 | 2020-05-29 | 西安通鑫半导体辅料有限公司 | High-purity high-modulus potassium silicate solution and preparation method thereof |
| CN111620347A (en) * | 2020-04-30 | 2020-09-04 | 洛阳市奇航化工有限公司 | Sodium silicate continuous production process and device |
| CN114890431A (en) * | 2022-07-04 | 2022-08-12 | 凤阳常隆科技材料有限公司 | Wet production method of modified water glass |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044632A (en) * | 1989-01-31 | 1990-08-15 | 亨克尔两合股份公司 | The method of hydrothermal preparating solution of solidum silicate |
| CN1067634A (en) * | 1988-01-25 | 1993-01-06 | 戴元宁 | The concocting method of water glass |
-
2011
- 2011-04-22 CN CN2011101018070A patent/CN102115092A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1067634A (en) * | 1988-01-25 | 1993-01-06 | 戴元宁 | The concocting method of water glass |
| CN1044632A (en) * | 1989-01-31 | 1990-08-15 | 亨克尔两合股份公司 | The method of hydrothermal preparating solution of solidum silicate |
Non-Patent Citations (1)
| Title |
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| 《建筑工人》 20071130 盛天保 水玻璃模数调整的几个问题 第36-38页 1-2 , 第11期 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103754890A (en) * | 2013-12-17 | 2014-04-30 | 柳州东风化工股份有限公司 | Preparation method for anhydrous sodium metasilicate |
| CN105271276A (en) * | 2015-10-28 | 2016-01-27 | 昌邑市龙港无机硅有限公司 | Production process of high-modulus liquid sodium silicate |
| CN105271276B (en) * | 2015-10-28 | 2017-09-12 | 昌邑市龙港无机硅有限公司 | A kind of production technology of high mode liquid sodium silicate |
| CN106966403A (en) * | 2017-04-24 | 2017-07-21 | 确成硅化学股份有限公司 | A kind of production method of liquid sodium silicate |
| CN111204772A (en) * | 2020-01-20 | 2020-05-29 | 西安通鑫半导体辅料有限公司 | High-purity high-modulus potassium silicate solution and preparation method thereof |
| CN111620347A (en) * | 2020-04-30 | 2020-09-04 | 洛阳市奇航化工有限公司 | Sodium silicate continuous production process and device |
| CN114890431A (en) * | 2022-07-04 | 2022-08-12 | 凤阳常隆科技材料有限公司 | Wet production method of modified water glass |
| CN114890431B (en) * | 2022-07-04 | 2023-09-29 | 凤阳常隆科技材料有限公司 | Wet production method of modified water glass |
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Application publication date: 20110706 |