CN1237023C - Gelatilizer with cladding layer for gelatilizing formation of silicate slurry and its prepn process - Google Patents
Gelatilizer with cladding layer for gelatilizing formation of silicate slurry and its prepn process Download PDFInfo
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- CN1237023C CN1237023C CN 02158759 CN02158759A CN1237023C CN 1237023 C CN1237023 C CN 1237023C CN 02158759 CN02158759 CN 02158759 CN 02158759 A CN02158759 A CN 02158759A CN 1237023 C CN1237023 C CN 1237023C
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- coating layer
- mixture
- jelling agent
- hexadecanol
- agent
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Abstract
The present invention discloses gelatinizer with a coating layer for the gelling moulding of silicate slurry, which is inorganic coagulant with an outer coating layer. The coating layer is made of paraffin wax or higher alcohol, the gelatinizer comprises 100 parts by weight of inorganic coagulant and 75 to 100 parts by weight of coating layer, and the higher alcohol is cetanol or is the mixture of 100 parts by weight of cetanol and 0 to 27 parts by weight of dodecanol. The present invention simultaneously provides a preparation method of the gelatinizer with a coating layer, and the method comprises: 1) the inorganic coagulant and tenside are evenly blended; 2) the mixture obtained from step 1) and the material of the coating layer are blended in a heated stirrer; 3) the mixture obtained from step 2) is added to a spray-granulator for spray granulation; 4) the product obtained from the granulator is sieved, the powder material under the sieve is collected, and the product of the gelatinizer with a coating layer is obtained. The surface of the gelatinizer of the present invention is covered with an organic wax coating layer for preventing the calcium ions in the gelatinizer from quickly dissolving in the slurry, and therefore, the coagulating time of the slurry is postponed.
Description
Technical field
The present invention relates to a kind of moulding new technology of silicate ceramic mud, be specifically related to a kind of manufacture method of impelling the jelling agent and this jelling agent of silicate slurry moulding.
Background of invention
Traditional ceramic mud moulding process need be made mould with porous material (as gypsum, resin etc.), so that the moisture in the mud is discharged mould, forms base substrate.Porous material is made mould and is brought many inconvenience, increases production cost and investment in fixed assets.The silicate slurry gelatinization formation technology that Chinese patent ZL991 00735.2 proposes need not to use the porous material mfg. moulding die, as long as inorganic powders such as sulplo-aluminate, silicate are added in the mud as jelling agent, dissolve in by high volence metal ion in the jelling agent and to impel mud in mould, to solidify in the mud, thereby form base substrate.But because the process that above-mentioned high valence ion dissolves in the mud comparatively fast and not is subjected to Artificial Control, whole moulding process has only the time of several minutes, and this brings very big inconvenience to forming operation, even can't operate.
Summary of the invention
Too fast at above jelling agent setting rate, molding time is too short, operate uppity problem, and main purpose of the present invention is to provide a kind of jelling agent with coating layer that can delay and control the mud setting time.
The present invention provides a kind of above-mentioned method with jelling agent of coating layer for preparing simultaneously.
The present invention at first provides a kind of jelling agent with coating layer that is used for silicate slurry gelling moulding, is covered with coating layer at the skin of the inorganic peptizer that is mixed with tensio-active agent, and described coating layer is paraffin or higher alcohols.
The above-mentioned jelling agent with coating layer that is used for silicate slurry gelling moulding, described inorganic peptizer and coating layer ratio of weight and number are 100: 75-100.
The above-mentioned jelling agent with coating layer that is used for silicate slurry gelling moulding, described higher alcohols is the mixture of hexadecanol or hexadecanol and lauryl alcohol.
The above-mentioned jelling agent with coating layer that is used for silicate slurry gelling moulding, described hexadecanol and lauryl alcohol blended ratio of weight and number are 100: 0-27.
The above-mentioned jelling agent with coating layer that is used for silicate slurry gelling moulding, described inorganic peptizer are the mixture of one of calcium sulphoaluminate, calcium aluminate or Calucium Silicate powder or first three kind material and silicon oxide.
The above-mentioned jelling agent with coating layer that is used for silicate slurry gelling moulding, the chemical constitution of described inorganic peptizer are Al by weight percentage
2O
3: 0-55%, CaO:30-70%, SiO
2: 0-40%, SO
3: 0-13%.
A kind of preparation method with jelling agent of coating layer provided by the invention comprises the steps:
1). inorganic peptizer is mixed with tensio-active agent;
2). the mixture of step 1) is mixed in the Mixing Machine of heating with coating layer material;
3). with step 2) mixture add in the sponging granulator and carry out mist projection granulating;
4). the tablets press product is sieved, and collection screen powder off the net obtains the jelling agent that product has coating layer.
Among the preparation method of above-mentioned jelling agent with coating layer, described tensio-active agent is the mixture of oleic acid or vinyltriethoxysilane or vinyltriethoxysilane and ethylene glycol.
Among the preparation method of above-mentioned jelling agent with coating layer, described inorganic peptizer is that calcium sulphoaluminate, calcium aluminate or Calucium Silicate powder or first three are planted the mixture of one of material and silicon oxide, and described coating layer is paraffin or higher alcohols.
Described tensio-active agent is the mixture of oleic acid or vinyltriethoxysilane or vinyltriethoxysilane and ethylene glycol, described inorganic peptizer is the mixture of one of calcium sulphoaluminate, calcium aluminate or Calucium Silicate powder or first three kind material and silicon oxide, described coating layer is paraffin or higher alcohols, and described higher alcohols is that hexadecanol or hexadecanol and lauryl alcohol are 100 by ratio of weight and the number of copies: mixture (0-27); Described mesh size is 0.1 millimeter.
According to technique scheme, the present invention proposes to coat organic wax coating on the jelling agent surface, prevents that the calcium ion in the jelling agent from dissolving in the mud very soon, thereby has delayed the setting time of mud.This wax protective layer can melt at a certain temperature; calcium ion in the jelling agent of protective layer fusing back can dissolve in the mud very soon; impel mud to solidify; therefore can play the effect of control mud setting time by the temperature that changes mud; make this moulding process artificially to regulate, made things convenient for forming operation.
Embodiment
The present invention is one of achievement in research of national natural science fund subsidy project " research of silicate ceramics slip casting gelling moulding mechanism " (contract number 59972032).For opener, below be described in detail the present invention with specific embodiment.
Inorganic gel agent used among the present invention is calcium sulphoaluminate, calcium aluminate, Calucium Silicate powder, makes protective layer with paraffin, because paraffin is 55-60 ℃ of fusing, therefore mud is heated to and can triggers mud more than 60 ℃ and solidify.This protective layer is fit to the high place of temperature and uses.The ground low at temperature can will trigger temperature design between 40-50 ℃; protective layer can be selected hexadecanol (fusing point is 50 ℃) for use; or by in hexadecanol, dissolving in an amount of lauryl alcohol (fusing point is 22 ℃); the fusing point of mixture is set between 40-50 ℃, and the lauryl alcohol content fusing point of polyhybrid thing more is low more.The fusing point design is being inappropriate below 40 ℃, because can soften near wax coating layer in the room temp occasion, in addition local melting, causing the mutual adhesion of jelling agent particle easily, can't disperse.
The inorganic gel agent needs at first to mix with an amount of tensio-active agent; same again organic protective agent (paraffin or higher alcohols) mixes in the stirring mill of heating; mixture is poured in the storage tank of sponging granulator; utilize pressurized air; make mixed stream be sent into forth fine drop, and then be cooled to powder.Example 1:
100 gram calcium sulphoaluminate powders mix in mortar with 8 gram oleic acid; mixed 4 hours in the stirring mill of heating with 100 gram melt paraffins again; pour into then in the storage tank of sponging granulator; with 0.2MPa pressurized air mist projection granulating; sieve by aperture 0.1mm screen cloth, collected powder is standby.
The preparation solid load is the silicate ceramic mud of 77% (weight), takes by weighing 100 gram mud, adds the above-mentioned coating jelling agent powder of 6 grams, stirs, and pours in the mould of plastics.This mud that coats jelling agent that contains is placed and was still had flowability in 60 minutes, but places 40 minutes in 70 ℃ of baking ovens, and mud promptly solidifies fully.
In contrast, add uncoated calcium sulphoaluminate powder 1 gram in 100 same gram silicate slurries, stir promptly began to solidify in back 1.5 minutes.
Example 2:
100 gram calcium aluminate powders mix in mortar with 8 gram vinyltriethoxysilanes; mixed 4 hours in the stirring mill of heating with 95 gram fusion hexadecanols again; pour into then in the storage tank of sponging granulator; with 0.2MPa pressurized air mist projection granulating; sieve by aperture 0.1mm screen cloth, collected powder is standby.
The preparation solid load is the silicate ceramic mud of 77% (weight), takes by weighing 100 gram mud, adds the above-mentioned coating jelling agent powder of 8 grams, stirs, and pours in the mould of plastics.This mud that coats jelling agent that contains is placed and was still had flowability in 60 minutes, but places 40 minutes in 60 ℃ of baking ovens, and mud promptly solidifies fully.
Reference examples: add uncoated calcium aluminate powder 4 grams in 100 same gram silicate slurries, stir promptly began to solidify in back 5 minutes.
Example 3:
100 gram Calucium Silicate powder powders mix in mortar with 8 gram vinyltriethoxysilanes and 1 gram ethylene glycol; (wherein lauryl alcohol 12 restrains for same again 80 gram fused lauryl alcohols and hexadecanol mixture; hexadecanol 68 grams) in the stirring mill of heating, mixed 4 hours; pour into then in the storage tank of sponging granulator; with 0.2MPa pressurized air mist projection granulating; sieve by aperture 0.1mm screen cloth, collected powder is standby.
The preparation solid load is the silicate ceramic mud of 77% (weight), takes by weighing 100 gram mud, adds the above-mentioned coating jelling agent powder of 5 grams, stirs, and pours in the mould of plastics.This mud that coats jelling agent that contains is placed and was still had flowability in 40 minutes, but places 30 minutes in 55 ℃ of baking ovens, and mud promptly solidifies fully.
Reference examples: add uncoated Calucium Silicate powder powder 1 gram in 100 same gram silicate slurries, stir promptly began to solidify in back 1 minute.
Example 4:
20 gram silicon oxide and 80 gram Calucium Silicate powder powders mix in mortar with 8 gram oleic acid; mixed 4 hours in the stirring mill of heating with 90 gram melt paraffins again; pour into then in the storage tank of sponging granulator; with 0.2MPa pressurized air mist projection granulating; sieve by aperture 0.1mm screen cloth, collected powder is standby.
The preparation solid load is the silicate ceramic mud of 77% (weight), takes by weighing 100 gram mud, adds the above-mentioned coating jelling agent powder of 5 grams, stirs, and pours in the mould of plastics.This mud that coats jelling agent that contains is placed and was still had flowability in 50 minutes, but places 30 minutes in 70 ℃ of baking ovens, and mud promptly solidifies fully.
Reference examples: add uncoated Calucium Silicate powder and silicon oxide powder 1 gram in 100 same gram silicate slurries, stir promptly began to solidify in back 3 minutes.
Example 5:
90 gram calcium sulphoaluminates and 10 gram silicon oxide powders mix in mortar with 8 gram vinyltriethoxysilanes; mixed 4 hours in the stirring mill of heating with 75 gram fused lauryl alcohols and hexadecanol mixture (wherein lauryl alcohol 16 grams, hexadecanol 59 grams) again; pour into then in the storage tank of sponging granulator; with 0.2MPa pressurized air mist projection granulating; sieve by aperture 0.1mm screen cloth, collected powder is standby.
The preparation solid load is the silicate ceramic mud of 77% (weight), takes by weighing 100 gram mud, adds the above-mentioned coating jelling agent powder of 6 grams, stirs, and pours in the mould of plastics.This mud that coats jelling agent that contains is placed and was still had flowability in 60 minutes, but places 40 minutes in 45 ℃ of baking ovens, and mud promptly solidifies fully.
Reference examples: add uncoated silicon oxide and calcium sulphoaluminate powder 2 grams in 100 same gram silicate slurries, stir promptly began to solidify in back 4 minutes.
Claims (9)
1, a kind of jelling agent that is used for silicate slurry gelling moulding with coating layer, it is characterized in that: the skin at the inorganic peptizer that is mixed with tensio-active agent is covered with coating layer, described coating layer is paraffin or higher alcohols, described higher alcohols is the mixture of hexadecanol or hexadecanol and lauryl alcohol, and described tensio-active agent is the mixture of oleic acid or vinyltriethoxysilane or vinyltriethoxysilane and ethylene glycol.
2, the jelling agent with coating layer that is used for silicate slurry gelling moulding according to claim 1, it is characterized in that: described inorganic peptizer and coating layer ratio of weight and number are 100: 75-100.
3, the jelling agent with coating layer that is used for silicate slurry gelling moulding according to claim 1 is characterized in that: described hexadecanol and lauryl alcohol blended ratio of weight and number are 100: 0-27.
4, the jelling agent with coating layer that is used for silicate slurry gelling moulding according to claim 1 and 2 is characterized in that: described inorganic peptizer is the mixture of one of calcium sulphoaluminate, calcium aluminate, Calucium Silicate powder or first three kind material and silicon oxide.
5, the jelling agent with coating layer that is used for silicate slurry gelling moulding according to claim 4 is characterized in that: the chemical constitution of described inorganic peptizer is Al by weight percentage
2O
3: 0-55%, CaO:30-70%, SiO
2: 0-40%, SO
3: 0-13%.
6, the described preparation method with jelling agent of coating layer of one of a kind of claim 1-5 comprises the steps:
1). inorganic peptizer is mixed with tensio-active agent;
2). the mixture of step 1) is mixed in the Mixing Machine of heating with coating layer material;
3). with step 2) mixture add in the sponging granulator and carry out mist projection granulating;
4). the tablets press product is sieved, and collection screen powder off the net obtains the jelling agent that product has coating layer.
7, the preparation method with jelling agent of coating layer as claimed in claim 6 is characterized in that: described tensio-active agent is the mixture of oleic acid or vinyltriethoxysilane or vinyltriethoxysilane and ethylene glycol.
8, the preparation method with jelling agent of coating layer as claimed in claim 6 is characterized in that: described inorganic peptizer is the mixture of one of calcium sulphoaluminate, calcium aluminate or Calucium Silicate powder or first three kind material and silicon oxide; Described coating layer is paraffin or higher alcohols, and described higher alcohols is the mixture of hexadecanol or hexadecanol and lauryl alcohol.
9, the preparation method with jelling agent of coating layer as claimed in claim 6, it is characterized in that: described tensio-active agent is the mixture of oleic acid or vinyltriethoxysilane or vinyltriethoxysilane and ethylene glycol, described inorganic peptizer is the mixture of one of calcium sulphoaluminate, calcium aluminate or Calucium Silicate powder or first three kind material and silicon oxide, described coating layer is paraffin or higher alcohols, and described higher alcohols is that hexadecanol or hexadecanol and lauryl alcohol are 100 by ratio of weight and the number of copies: the mixture of 0-27; Described mesh size is 0.1 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02158759 CN1237023C (en) | 2002-12-26 | 2002-12-26 | Gelatilizer with cladding layer for gelatilizing formation of silicate slurry and its prepn process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02158759 CN1237023C (en) | 2002-12-26 | 2002-12-26 | Gelatilizer with cladding layer for gelatilizing formation of silicate slurry and its prepn process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1417156A CN1417156A (en) | 2003-05-14 |
| CN1237023C true CN1237023C (en) | 2006-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02158759 Expired - Fee Related CN1237023C (en) | 2002-12-26 | 2002-12-26 | Gelatilizer with cladding layer for gelatilizing formation of silicate slurry and its prepn process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108947297B (en) * | 2018-06-12 | 2021-04-02 | 金华市欣生沸石开发有限公司 | Zeolite-based hydration heat slow-release material |
| CN108774015B (en) * | 2018-06-12 | 2021-04-02 | 金华市欣生沸石开发有限公司 | Preparation method of zeolite-based hydration heat slow-release material |
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Granted publication date: 20060118 Termination date: 20111226 |