CN1047067A - The preparation method of non-hydrate sodium metasilicate - Google Patents

The preparation method of non-hydrate sodium metasilicate Download PDF

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Publication number
CN1047067A
CN1047067A CN 89103043 CN89103043A CN1047067A CN 1047067 A CN1047067 A CN 1047067A CN 89103043 CN89103043 CN 89103043 CN 89103043 A CN89103043 A CN 89103043A CN 1047067 A CN1047067 A CN 1047067A
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CN
China
Prior art keywords
sodium metasilicate
hydrate sodium
concentrated solution
amount
quartz sand
Prior art date
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Granted
Application number
CN 89103043
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Chinese (zh)
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CN1021570C (en
Inventor
杨汝栋
张清文
袁秀兰
刘建民
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Lanzhou University
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Lanzhou University
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Priority to CN 89103043 priority Critical patent/CN1021570C/en
Publication of CN1047067A publication Critical patent/CN1047067A/en
Application granted granted Critical
Publication of CN1021570C publication Critical patent/CN1021570C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/32—Alkali metal silicates

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Silicon Compounds (AREA)

Abstract

The present invention is characterized in having replaced used Na in the traditional mode of production non-hydrate sodium metasilicate method with thenardite (not having bright powder) for the industrial production non-hydrate sodium metasilicate provides a kind of novel method 2CO 3Become single stage method with NaOH and by two-step approach, technology is simple, and raw material is easy to get, and is cheap, thereby reduced production cost significantly, is a kind of reliable practical technique.

Description

The preparation method of non-hydrate sodium metasilicate
The invention belongs to the what silicate industry.
Non-hydrate sodium metasilicate (Na 2SiO 39H 2O) extensively use what synthetic detergent, washing powder, flotation agent, solid coating and cheese emulsifying agent.Traditional production method is with soda ash (Na 2CO 3) generate water glass with the quartz sand pyroreaction, and then react with caustic soda (NaOH), or directly generate Na with quartz sand and caustic soda reaction 2SiO 39H 2The O crystallization.Following patent documentation has play-by-play to prior art
I.G.Farbenind????et????al.，Ger.643，584????Apr.19（1937）.
A.C.Malzac，Fr.1，005，562????Apr.11（1952）.
Sakayori????Teruo????et.al.，Japan????71，27，375（1971）
R.C.Shaver????U.S.3，471，253（1969）
Aforesaid method is because of using expensive soda ash and caustic soda so its production and application are restricted.Therefore seek the surrogate of soda ash and caustic soda, prepare Na with easy method 2SiO 39H 2O is significant.
The objective of the invention is to: the saltcake with China's high yield is that raw material replaces NaOH and Na 2CO 3At high temperature with quartz sand and charcoal prepared in reaction Na 2SiO 39H 2O.
Implementation process of the present invention is:
With Sodium sulfate anhydrous.min(99) (Na 2SO 4), quartz sand and coal dust (C) be with 1: 1: after the proportioning 2-5(mol ratio) mixes, put in the what reverberatory furnace in reacting under the temperature more than 1350 ℃, after question response is finished, melt shrend, stripping, filtration, filtrate are concentrated into ratio of specific heat heavily are 1.5-1.6, filtrate is cooled to below 60 ℃, adds the Na of the 5-10% of filtrate weight then 2SiO 39H 2O is as crystal seed, to be crystallized finishing after pulverize, sieve and promptly get product.
Principal reaction is:
The present invention has an embodiment as follows:
Earlier with Sodium sulfate anhydrous.min(99) and coal dust in molar ratio 1: mix thoroughly, pack into 1 mole of quartz sand again after 2-5 mixes and in 1400 ℃ High Temperature Furnaces Heating Apparatus, reacted 4 hours in the reactor, the melt stripping of after shrend, pressurizeing, after the centrifuging filtrate being concentrated into ratio of specific heat weighs between the 1.5-1.6, in the impouring crystallizing pan, treat that temperature is reduced to below 60 ℃ the back and adds an amount of crystal seed, is placed to after stirring and all crystallizes into piece, through pulverize, sieving promptly gets product.

Claims (2)

1, a kind of novel preparation method of non-hydrate sodium metasilicate, it is characterized in that: after Sodium sulfate anhydrous.min(99), quartz sand, an amount of mixing of coal dust, put in the what reverberatory furnace and under high temperature, react completely, with adding an amount of crystal after reaction product shrend, stripping, filtration, the concentrating filter liquor, promptly get non-hydrate sodium metasilicate after the crystallization then.
2, according to the novel preparation method of the said a kind of non-hydrate sodium metasilicate of claim 1, it is characterized in that: the proportioning of Sodium sulfate anhydrous.min(99), quartz sand, coal dust is 1: 1: the 2-5(mol ratio); The reverberatory furnace temperature should be controlled at more than 1350 ℃, and the concentrated solution ratio of specific heat focuses between the 1.5-1.6 is advisable; The amount that adds crystal seed during crystallization should be the 5-10% of concentrated solution.The temperature of concentrated solution should be lower than 60 ℃ when adding crystal seed.
CN 89103043 1989-05-09 1989-05-09 Preparing process for non-hydrate sodium metasilicate Expired - Fee Related CN1021570C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 89103043 CN1021570C (en) 1989-05-09 1989-05-09 Preparing process for non-hydrate sodium metasilicate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 89103043 CN1021570C (en) 1989-05-09 1989-05-09 Preparing process for non-hydrate sodium metasilicate

Publications (2)

Publication Number Publication Date
CN1047067A true CN1047067A (en) 1990-11-21
CN1021570C CN1021570C (en) 1993-07-14

Family

ID=4854959

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 89103043 Expired - Fee Related CN1021570C (en) 1989-05-09 1989-05-09 Preparing process for non-hydrate sodium metasilicate

Country Status (1)

Country Link
CN (1) CN1021570C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1060453C (en) * 1998-01-14 2001-01-10 向涛涌 Method for preparing ceramic liquefacient polysodium metasilicate
CN1329295C (en) * 2003-03-16 2007-08-01 广东东方锆业科技股份有限公司 Method for preparing sodium metasilicate by discharched waste liquid from production of zirconium oxychloride
CN106976886A (en) * 2017-04-28 2017-07-25 福建省三明正元化工有限公司 A kind of preparation method of high dispersive silica sodium silicate solid
CN112678869A (en) * 2020-12-25 2021-04-20 广东宇星阻燃新材股份有限公司 Preparation method of spherical antimony trioxide

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1060453C (en) * 1998-01-14 2001-01-10 向涛涌 Method for preparing ceramic liquefacient polysodium metasilicate
CN1329295C (en) * 2003-03-16 2007-08-01 广东东方锆业科技股份有限公司 Method for preparing sodium metasilicate by discharched waste liquid from production of zirconium oxychloride
CN106976886A (en) * 2017-04-28 2017-07-25 福建省三明正元化工有限公司 A kind of preparation method of high dispersive silica sodium silicate solid
CN112678869A (en) * 2020-12-25 2021-04-20 广东宇星阻燃新材股份有限公司 Preparation method of spherical antimony trioxide
CN112678869B (en) * 2020-12-25 2023-04-07 广东宇星阻燃新材股份有限公司 Preparation method of spherical antimony trioxide

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Publication number Publication date
CN1021570C (en) 1993-07-14

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