CN101837985B - Preparation method of sodium metasilicate nonahydrate - Google Patents
Preparation method of sodium metasilicate nonahydrate Download PDFInfo
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- CN101837985B CN101837985B CN2010101664209A CN201010166420A CN101837985B CN 101837985 B CN101837985 B CN 101837985B CN 2010101664209 A CN2010101664209 A CN 2010101664209A CN 201010166420 A CN201010166420 A CN 201010166420A CN 101837985 B CN101837985 B CN 101837985B
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Abstract
The invention discloses a preparation method of sodium metasilicate nonahydrate, which comprises the following steps of: cleaning an drying waste glass; grinding the waste glass into glass powder of over 200 meshes; mixing 15-30 percent NaOH solution with the waste glass powder in a mass ratio of 4-7:1; heating the mixture to the temperature of between 90 and 100 DEG C; performing a reaction for 50 to 150 minutes with continuous stirring; when a reaction product is cooled to the temperature of between 50 and 60 DEG C, adding sodium metasilicate nonahydrate which is 0.5 to 1 percent of the total mass of the reaction product into the reaction product while stirring, and simultaneously adding lauryl sodium sulfate which is 0.1 to 0.5 percent of the total mass of the reaction product into the reaction product; naturally cooling the mixture to the room temperature; performing crystallization on the mixture for 18 to 68 hours; and baking the mixture after crystallization for 200 to 300 minutes at the temperature of between 25 and 30 DEG C. The preparation method can fully use silicon dioxide and sodium oxide namely the main components in the waste glass, reduce the used amount of sodium hydroxide in production, and reduce the reaction time, the production energy consumption and the production cost.
Description
Technical field
The invention belongs to the ceramic preparation field.Relate to a kind of method of producing non-hydrate sodium metasilicate, particularly a kind of method of utilizing cullet to produce non-hydrate sodium metasilicate.
Background technology
Non-hydrate sodium metasilicate has purposes widely in fields such as papermaking, machinery, electronics, chemical industry, material of construction, food, oil field, mining, potteries, has particularly become the best substitute products of the phosphorous assistant of serious environment pollution at detergent industry.And the production of non-hydrate sodium metasilicate at present uses water glass and sodium hydroxide to be main raw material usually, makes through technologies such as evaporation concentration, crystallisation by cooling, spinning, dryings, and not only energy consumption is big, production cost is high, and consumed resource is also bigger.
Summary of the invention
The objective of the invention is to utilize cullet to produce non-hydrate sodium metasilicate, with the production energy consumption that reduces non-hydrate sodium metasilicate, economize on resources, reduce cost.
The present invention realizes through following technical scheme.
Cullet is cleaned up, dries, wears into the above glass powder of 200 orders, then according to the following steps:
(1) be 15%～30% NaOH solution with the cullet powder with concentration is 4～7 to mix, is heated to 90 ℃～100 ℃, continue to stir reaction 50min～150min down by mass ratio;
When (2) the question response product is cooled to 50 ℃～60 ℃; The non-hydrate sodium metasilicate that adds reaction product total mass 0.5%～1% while stirring is as crystal seed; And the sodium lauryl sulphate that adds reaction product total mass 0.1%～0.5% simultaneously is as dispersion agent; Naturally reduce to room temperature then, crystallization 18 hours～68 hours;
Under (3) 25 ℃～30 ℃ temperature, oven dry 200min～300min promptly obtains the non-hydrate sodium metasilicate product.
The present invention is that main raw material prepares non-hydrate sodium metasilicate with the cullet, can make full use of staple silicon-dioxide and sodium oxide in the cullet, makes full use of waste resource, reduces caustic soda consumption in the production; Cullet powder and NaOH reactive behavior are high, can reduce the reaction times, reduce production energy consumption.Has advantage energy-conservation, that lower consumption, reduce production costs.
Embodiment
The present invention will be described further through following examples.
Embodiment 1:
With waste plate glass and industrial caustic soda is main raw material.Cullet is cleaned up, dries, wear into 200 order glass powder; It is 25% NaOH solution that industrial caustic soda is made into concentration, is to mix at 4.8: 1 with the cullet powder by mass ratio, and is heated to 95 ℃ they are reacted, and the reacting by heating process continues to stir, and the reaction times is 70min; After finishing, reaction treats that thick reaction product is cooled to 50 ℃; The non-hydrate sodium metasilicate that adds reaction product total mass 0.5% while stirring is as crystal seed; And the sodium lauryl sulphate that adds reaction product total mass 0.1% simultaneously is as dispersion agent; Naturally reduce to room temperature then, the slow crystallization of non-hydrate sodium metasilicate.The non-hydrate sodium metasilicate crystallization needs 38 hours.With the excessive moisture oven dry, bake out temperature is 30 ℃, about drying time 220min, promptly obtains the non-hydrate sodium metasilicate product.
Embodiment 2:
With cullet bottle and concentration is that 25% ionic membrane caustic soda is a main raw material.Cullet is cleaned up, dries, it is worn into powder (more than 200 orders); Is to mix at 5.2: 1 ionic membrane caustic soda and cullet powder by mass ratio, and is heated to 100 ℃ they are reacted, and the reacting by heating process continues to stir, and the reaction times is 85min; After finishing, reaction treats that thick reaction product is cooled to 60 ℃; The non-hydrate sodium metasilicate that adds reaction product total mass 0.6% while stirring is as crystal seed; And the sodium lauryl sulphate that adds reaction product total mass 0.1% simultaneously is as dispersion agent; Naturally reduce to room temperature then, the slow crystallization of non-hydrate sodium metasilicate.The non-hydrate sodium metasilicate crystallization needs 42 hours.With the excessive moisture oven dry, bake out temperature is 30 ℃, about drying time 260min, promptly obtains the non-hydrate sodium metasilicate product.
Embodiment 3:
With waste plate glass and concentration is that 25% diaphragm caustic soda is a main raw material.Cullet is cleaned up, dries, it is worn into powder (more than 200 orders); Is to mix at 5.8: 1 diaphragm caustic soda and cullet powder by mass ratio, and is heated to 95 ℃ they are reacted, and should continue in the reacting by heating process to stir, and the reaction times is 75min; After finishing, reaction treats thick reaction product is cooled to 55 ℃; The non-hydrate sodium metasilicate that adds reaction product total mass 0.6% while stirring is as crystal seed; And the sodium lauryl sulphate that adds reaction product total mass 0.2% simultaneously is as dispersion agent; Naturally reduce to room temperature then, the slow crystallization of non-hydrate sodium metasilicate.The non-hydrate sodium metasilicate crystallization needs 40 hours.With the excessive moisture oven dry, bake out temperature is 30 ℃, and drying time 230min promptly obtains the non-hydrate sodium metasilicate product.
Claims (1)
1. the preparation method of a non-hydrate sodium metasilicate cleans up, dries, wears into the above glass powder of 200 orders with cullet, it is characterized in that further comprising the steps of:
(1) be 15%～30% NaOH solution with the cullet powder with concentration is to mix at 4～7: 1, is heated to 90 ℃～100 ℃, continue to stir reaction 50min～150min down by mass ratio;
When (2) the question response product is cooled to 50 ℃～60 ℃; The non-hydrate sodium metasilicate that adds reaction product total mass 0.5%～1% while stirring; And add the sodium lauryl sulphate of reaction product total mass 0.1%～0.5% simultaneously, reduce to room temperature then naturally, crystallization 18 hours～68 hours;
Under (3) 25 ℃～30 ℃ temperature, baking 200min～300min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101664209A CN101837985B (en) | 2010-05-07 | 2010-05-07 | Preparation method of sodium metasilicate nonahydrate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101664209A CN101837985B (en) | 2010-05-07 | 2010-05-07 | Preparation method of sodium metasilicate nonahydrate |
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| CN101837985A CN101837985A (en) | 2010-09-22 |
| CN101837985B true CN101837985B (en) | 2012-04-18 |
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| CN2010101664209A Expired - Fee Related CN101837985B (en) | 2010-05-07 | 2010-05-07 | Preparation method of sodium metasilicate nonahydrate |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190310B (en) * | 2011-01-06 | 2013-03-06 | 内蒙古大唐国际再生资源开发有限公司 | Method for manufacturing sodium metasilicate nonahydrate with fly ashes |
| CN102826562B (en) * | 2012-09-14 | 2014-03-26 | 天津理工大学 | Method for preparing water glass by utilizing waste lead-containing glass and separating lead-containing compound |
| CN102951652A (en) * | 2012-12-05 | 2013-03-06 | 朔州市润泽投资发展有限公司 | Method for producing sodium metasilicate by low-concentration sodium silicate solution |
| EP3880620A4 (en) * | 2018-11-16 | 2022-08-10 | The University of Queensland | Alkaline digestion of glass |
| CN113277519B (en) * | 2021-06-22 | 2022-09-16 | 清华大学 | Silicon dioxide mesoporous material using waste glass as raw material and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607178A (en) * | 2003-10-13 | 2005-04-20 | 刘增刚 | Production method of sodium metasilicate nonahydrate |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607178A (en) * | 2003-10-13 | 2005-04-20 | 刘增刚 | Production method of sodium metasilicate nonahydrate |
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