CN104744071A - Special composite foaming agent for lightweight heat-insulating ceramic - Google Patents
Special composite foaming agent for lightweight heat-insulating ceramic Download PDFInfo
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Abstract
The invention discloses a special composite foaming agent for lightweight heat-insulating ceramic. The special composite foaming agent comprises a reducing foaming agent, an oxidizing agent and a foam stabilizer, wherein the reducing foaming agent is a by-product, namely silicon carbide mud sump or silicon carbide dust-collecting powder, produced in silicon carbide production; the oxidizing agent is ferric oxide, titanium dioxide, a mineral substance with relatively high ferric oxide content or a mineral substance with relatively high titanium dioxide content; and the foam stabilizer is fluorite. According to the special composite foaming agent for the lightweight heat-insulating ceramic, the lightweight thermal insulation material of which the volume density is unequal in 250-1000kg/m<3> can be obtained; the operating temperature of the composite foaming agent is 1000-1220 DEG C; a layer of refractory shell is formed on surface layer of a foamed ceramic sintering body; and the compact refractory shell obviously has three effects that: the product is smoothly finished in a roller hearth kiln and the foamed ceramic body is prevented from being adhered to the roller; a gas phase is prevented from being discharged out; the product with low volume density and low heat conductivity coefficient is obtained; and the mechanical properties such as the rupture modulus, the surface wearability and the anti-impact force of the ceramic body are improved. The special composite foaming agent can be used as renovating, decorating, heat-insulating and sound-insulating ceramic materials according to the difference in volume density and heat conductivity coefficient.
Description
Technical field
The present invention relates to sound insulation humidity-controlling building material field, be specifically related to the composite foamable agent that a kind of lightweight, thermal insulation, sound insulation ceramic tile production being applicable to have closed pore character is used.
Background technology
At present for having the polishing slag of the lightweight of closed pore character, thermal insulation, sound insulation ceramic tile production whipping agent used mainly with producing containing abrasive material silicon carbide in abrasive material silicon carbide or ceramic tile cutting grinding process.But because the thinner price of abrasive material silicon carbide particle diameter is more expensive, abrasive material silicon carbide prices more than 500 orders is generally greater than 15000 yuan/ton.
Chinese patent CN102219548A proposes a kind of environment-friendly light ceramic tile foaming agent and preparation method thereof whipping agent and is made up of the raw material of following weight percents: potassium felspar sand 2-22%, albite 1-20%, calcining high alumina stone 20-40%, agalmatolite 5-25%, magnesium oxide 15-35%, magnesium chloride 1-18%, by nitration mixture, ethanolamines, tea saponin and Saponin/TSM carry out esterification, above-mentioned raw materials is successively through selection, coarse crushing, in small, broken bits, batching grinds rear and nitration mixture, ethanolamines, material after the esterifications such as bitter edible plant saponin and Saponin/TSM stirs to be trembled evenly, carry out high-temperature calcination again after its drying and be incubated, then the calcium phosphate adding 1.5-3% carries out the agent of grinding producing foamed.This whipping agent needs to form through complicated complete processing, and and is not suitable for light thermal-insulation ceramic between 1000-1220 degree and produces used
Therefore, utilize industrial solid castoff in a large number in the urgent need to developing one, production cost is lower, the agent of production technique simple light thermal-insulation ceramic special-purpose foaming.
Summary of the invention
In order to overcome above-mentioned deficiency of the prior art, the invention provides a kind of production technique simple, and low production cost, industrial solid castoff can be utilized in a large number to carry out special-purpose foaming agent and the production method thereof of light thermal-insulation ceramic production.
The object of the present invention is achieved like this:
A kind of light thermal-insulation ceramic specific complex whipping agent, comprise reduction whipping agent, oxygenant, foaming aids and suds-stabilizing agent, described reduction whipping agent is byproduct---silicon carbide pond mud or the silicon carbide dust collection powder that silicon carbide is produced, oxygenant is ferric oxide, titanium dioxide or containing the higher mineral substance of ferric oxide or containing the higher mineral substance of titanium dioxide, foaming aids is Paris white, and suds-stabilizing agent is Fluorspar Powder;
Described silicon carbide pond mud processes the washing pool of uncombined carbon and the throw out in alkali cleaning pond in the silicon carbide abrasive course of processing, the pond mud of lower floor after the uncombined carbon on extraction top layer, described pond mud requires that carborundum content is not less than 65%, uncombined carbon is not more than 10%, iron level is not more than 2%, calcium and magnesium oxides is not more than 2%, and dispersion agent is not more than 0.5%, and free silica and quartz content are not more than 20%;
Described silicon carbide dust collection powder is the silicon carbide micronic dust that in the silicon carbide abrasive course of processing, Raymond mill belt dust-precipitator is collected, and is specially Raymond mill 2#, 3# and gathers dust a mouthful collecting dust-removing powder, require that SiC content is greater than 90%;
The purity of described ferric oxide is greater than 95%;
The purity of described titanium dioxide is greater than 95%;
Described Fluorspar Powder, comprise fluorite original ore powder and fluorite breeze, require steady quality, CaF2 content is greater than 40%, and other mineralogical composition quartz, biotite, sericite, calcite, hornblende composition are also relatively stable;
The purity of described calcium carbonate is greater than 95%;
Described is that main light thermal-insulation ceramic specific complex blowing agent formulations is composed as follows with silicon carbide pond mud: silicon carbide pond mud 30-50%, ferric oxide 0-30%, titanium dioxide 0-50%, calcium carbonate 10-30%, fluorite 20-50%, each percentage composition sum is one of percentage hundred;
Described is that main light thermal-insulation ceramic specific complex blowing agent formulations is composed as follows with silicon carbide dust collection powder: silicon carbide dust collection powder 20-60%, ferric oxide 0-50%, titanium dioxide 0-60%, calcium carbonate 10-20%, fluorite 20-50%, each percentage composition sum is one of percentage hundred;
The use temperature of described light thermal-insulation ceramic specific complex whipping agent is between 1000-1220 degree;
The producing and manufacturing technique of described light thermal-insulation ceramic specific complex whipping agent, concrete steps are as follows:
Collect Raymond mill 2#, 3# respectively to gather dust mouthful collecting dust-removing powder mixing respectively, the size-grade distribution situation of 2#, 3# dust collection powder is detected with particle collector, blend mixed powder by 2#, 3# dust collection powder, make D50 between 3.00-4.00 micron, and mixing dust collection powder is mixed;
According to light thermal-insulation ceramic body material ferric oxide content and content of titanium dioxide, introduce titanium dioxide and ferric oxide, i.e. titanium dioxide and red iron oxide;
Take mixing dust collection powder 20-60 part, ferric oxide 0-50 part, titanium dioxide 0-60 part, calcium carbonate 10-20 part, Fluorspar Powder 20-50 part, each component sum is one of percentage hundred;
Composition is mixed, metering, be stored in containing for subsequent use in moistureproof interior film package bag.
Silicon carbide pond mud needs to dry to moisture lower than within 0.1%, and mix, measure size-grade distribution situation, carborundum content and free carbon content, granularity also can be blent by 3# dust collection powder, makes granularity D50 in stable interval;
Simultaneously according to light thermal-insulation ceramic body material ferric oxide content and content of titanium dioxide, introduce titanium dioxide and ferric oxide;
Take pond mud dry powder 20-50 part, ferric oxide 0-50 part, titanium dioxide 0-60 part, calcium carbonate 10-30 part, Fluorspar Powder 20-50 part, each component sum is one of percentage hundred;
Composition is mixed, metering, be stored in containing for subsequent use in moistureproof interior film package bag.
positive beneficial effect:the present invention, as the agent of light thermal-insulation ceramic special-purpose foaming, can obtain volume density at 250-1000 kg/m
3between not wait light heat insulation material, composite foamable agent use temperature is between 1000-1220 degree, and foamed ceramic sintered compact top layer can be made to form the fire-resistant duricrust of one deck, and fire-resistant fine and close duricrust obviously has three effects: product 1) can be made to complete smoothly in roller kiln, stop foamed ceramic body roll banding; 2) stop gas phase to be arranged outward, low volume density, low thermal conductivity product can be obtained; 3) mechanical property of ceramic body can be improved, such as improve the modulus of rupture, surface abrasion resistance and anti-impact force etc.According to the difference of volume density and thermal conductivity, can be used as finishing, decoration, insulation, sound insulation stupalith.
Embodiment
below in conjunction with specific embodiment, the present invention is described further:
A kind of light thermal-insulation ceramic specific complex whipping agent, comprise reduction whipping agent, oxygenant and suds-stabilizing agent, described reduction whipping agent is byproduct---silicon carbide pond mud or the silicon carbide dust collection powder that silicon carbide is produced, oxygenant is ferric oxide, titanium dioxide or containing the higher mineral substance of ferric oxide or containing the higher mineral substance of titanium dioxide, suds-stabilizing agent is fluorite;
Described silicon carbide pond mud processes the washing pool of uncombined carbon and the throw out in alkali cleaning pond in the silicon carbide abrasive course of processing, the pond mud of lower floor after the uncombined carbon on extraction top layer, described mud of holding requires that carborundum content is not less than 65%, uncombined carbon is not more than 10%, iron level is not more than %, and calcium and magnesium oxides is not more than 2%, and dispersion agent is not more than 0.5%, free silica and quartz content are not more than 20%;
Described silicon carbide dust collection powder is the silicon carbide micronic dust that in the silicon carbide abrasive course of processing, Raymond mill belt dust-precipitator is collected, and is specially Raymond mill 2#, 3# and gathers dust a mouthful collecting dust-removing powder, require that SiC content is greater than 90%;
The purity of described ferric oxide is greater than 95%;
The purity of described titanium dioxide is greater than 95%;
Described Fluorspar Powder, comprise fluorite original ore powder and fluorite breeze, require steady quality, CaF2 content is greater than 40%, and other mineralogical composition quartz, biotite, sericite, calcite, hornblende composition are also relatively stable;
The purity of described calcium carbonate is greater than 95%;
Described is that main light thermal-insulation ceramic specific complex blowing agent formulations is composed as follows with silicon carbide pond mud: silicon carbide pond mud 30-50%, ferric oxide 0-30%, titanium dioxide 0-50%, calcium carbonate 10-30%, fluorite 20-50%, each percentage composition sum is one of percentage hundred;
Described is that main light thermal-insulation ceramic specific complex blowing agent formulations is composed as follows with silicon carbide dust collection powder: silicon carbide dust collection powder 20-60%, ferric oxide 0-50%, titanium dioxide 0-60%, calcium carbonate 10-20%, fluorite 20-50%, each percentage composition sum is one of percentage hundred;
The use temperature of described light thermal-insulation ceramic specific complex whipping agent is between 1000-1220 degree;
The producing and manufacturing technique of described light thermal-insulation ceramic specific complex whipping agent, concrete steps are as follows:
(collect Raymond mill 2#, 3# respectively to gather dust mouthful collecting dust-removing powder mixing respectively, the size-grade distribution situation of 2#, 3# dust collection powder is detected with particle collector, blend mixed powder by 2#, 3# dust collection powder, make D50 between 3.00-4.00 micron, and mixing dust collection powder is mixed;
According to light thermal-insulation ceramic body material ferric oxide content and content of titanium dioxide, introduce titanium dioxide and ferric oxide, i.e. titanium dioxide and red iron oxide;
Take mixing dust collection powder 20-60 part, ferric oxide 0-50 part, titanium dioxide 0-60 part, calcium carbonate 10-20 part, Fluorspar Powder 20-50 part, each component sum is one of percentage hundred;
Composition is mixed, metering, be stored in containing for subsequent use in moistureproof interior film package bag.
Silicon carbide pond mud needs to dry to moisture lower than within 0.1%, and mix, measure size-grade distribution situation, carborundum content and free carbon content, granularity also can be blent by 3# dust collection powder, makes granularity D50 in stable interval;
Simultaneously according to light thermal-insulation ceramic body material ferric oxide content and content of titanium dioxide, introduce titanium dioxide and ferric oxide;
Take pond mud dry powder 20-50 part, ferric oxide 0-50 part, titanium dioxide 0-60 part, calcium carbonate 10-30 part, Fluorspar Powder 20-50 part, each component sum is one of percentage hundred;
Composition is mixed, metering, be stored in containing for subsequent use in moistureproof interior film package bag.
embodiment 1
To mix in the raw mineral materials input of the weight 101% be made up of the perlite powder of weight 70%, the zeolite powder of weight 28%, weight 2% composite foamable agent, the inclined silicon of nine water of weight 0.8%, the Sodium salts humic acids of weight 0.2% in aluminium matter liner ball mill and to add the water wet ball grinding of weight 55%.Wherein, moil fineness controls to tail between 0.6-1% at 10000-hole sieve, and mud speed rate controls between painting four viscosity 25-45 second; Powder particles Gradation Control is less than 2% on 30 mesh sieves, under 30 mesh sieves, 60 mesh sieves is greater than 65%, under 60 mesh sieves, 80 mesh sieves is less than 30%, is less than 5% under 80 mesh sieves; Between powder moisture controlled 6.5-7.5%; Green body strength controls at 0.95-1.2MPA.By above process system through raw material ball milling, after mud sieves, slurry iron-removing, mud are old, spraying dry, powder are old, trimming cloth, dry-pressing formed, dry transport, 1150 degree of oxidations burn till, obtain that water-intake rate is 0.35%, volume density is 316kg/m
3,modulus of rupture 6.8MPa, thermal conductivity are 0.068W/ (m.k), and burning rank is the heat preservation decoration integrative ceramic plate of A1 level.
embodiment 2
To mix in the raw mineral materials input of the weight 100.9% be made up of the albite in powder of weight 38%, the feldspar in powder of weight 20%, weight 25 porcelain stone powder, the wilkinite of weight 22%, the white clay of weight 5%, the composite foamable agent of weight 2%, the Starso of weight 0.6%, the Sodium salts humic acids of weight 0.2%, the Potassium tripolyphosphate of weight 0.1% in aluminium matter liner ball mill and to add the water wet ball grinding of weight 45%.Wherein, moil fineness controls to tail between 0.6-1% at 10000-hole sieve, and mud speed rate controls between painting four viscosity 25-45 second; Powder particles Gradation Control is less than 2% on 30 mesh sieves, under 30 mesh sieves, 60 mesh sieves is greater than 65%, under 60 mesh sieves, 80 mesh sieves is less than 30%, is less than 5% under 80 mesh sieves; Between powder moisture controlled 6.5-7.5%; Green body strength controls at 0.95-1.2MPA.By above process system through raw material ball milling, mud sieves, slurry iron-removing, mud are old, spraying dry, powder are old, trimming cloth, dry-pressing formed, dry transport, 1180 degree of oxidations obtain after burning till that water-intake rate is 0.25%, volume density is 442kg/m
3,modulus of rupture 10.8MPa, thermal conductivity are 0.076W/ (m.k), and burning rank is the heat preservation decoration integrative ceramic plate of A1 level.
embodiment 3
To mix in the raw mineral materials input of the weight 101.9% be made up of the albite in powder of weight 28%, the feldspar in powder of weight 20%, weight 25 porcelain stone powder, the wilkinite of weight 5%, the white clay of weight 22%, the composite foamable agent of weight 1%, the Starso of weight 0.4%, the Sodium salts humic acids of weight 0.2%, the base substrate toughener of weight 0.2%, the Potassium tripolyphosphate of weight 0.1% in aluminium matter liner ball mill and to add the water wet ball grinding of weight 45%.Wherein, moil fineness controls to tail between 0.6-1% at 10000-hole sieve, and mud speed rate controls between painting four viscosity 25-45 second; Powder particles Gradation Control is less than 2% on 30 mesh sieves, under 30 mesh sieves, 60 mesh sieves is greater than 65%, under 60 mesh sieves, 80 mesh sieves is less than 30%, is less than 5% under 80 mesh sieves; Between powder moisture controlled 6.5-7.5%; Green body strength controls at 0.95-1.2MPA.By above process system through raw material ball milling, mud sieves, slurry iron-removing, mud are old, spraying dry, powder are old, trimming cloth, dry-pressing formed, dry transport, 1180 degree of oxidations obtain after burning till that water-intake rate is 0.10%, volume density is 878kg/m
3,modulus of rupture 22.8MPa, thermal conductivity are the Lightweight ceramic porcelain plate of 0.138W/ (m.k).
application note
The present invention relates to sound insulation humidity-controlling building material field, be specifically related to the composite foamable agent that a kind of lightweight, thermal insulation, sound insulation ceramic tile production being applicable to have closed pore character is used.
In 1000-1220 degree scope, add this kind of composite foamable agent and can produce volume density at 250-1000 kg/m
3between the light heat insulation material that do not wait, according to the difference of volume density and thermal conductivity, can be used as finishing, decoration, insulation, sound insulation stupalith.The present invention, as the agent of light thermal-insulation ceramic special-purpose foaming, can obtain volume density at 250-1000 kg/m
3between not wait light heat insulation material, composite foamable agent use temperature is between 1000-1220 degree, and foamed ceramic sintered compact top layer can be made to form the fire-resistant duricrust of one deck, and fire-resistant fine and close duricrust obviously has three effects: product 1) can be made to complete smoothly in roller kiln, stop foamed ceramic body roll banding; 2) stop gas phase to be arranged outward, low volume density, low thermal conductivity product can be obtained; 3) mechanical property of ceramic body can be improved, such as improve the modulus of rupture, surface abrasion resistance and anti-impact force etc.According to the difference of volume density and thermal conductivity, can be used as finishing, decoration, insulation, sound insulation stupalith.
Above case study on implementation is only for illustration of the preferred embodiment of the present invention; but the present invention is not limited to above-mentioned embodiment; in the ken that described exercising ordinary skill possesses; the any amendment done within the spirit and principles in the present invention, equivalent to substitute and improvement etc., the protection domain of the application all should be considered as.
Claims (6)
1. a light thermal-insulation ceramic specific complex whipping agent, it is characterized in that: comprise reduction whipping agent, oxygenant and suds-stabilizing agent, described reduction whipping agent is byproduct---silicon carbide pond mud or the silicon carbide dust collection powder that silicon carbide is produced, oxygenant is ferric oxide, titanium dioxide or containing the higher mineral substance of ferric oxide or containing the higher mineral substance of titanium dioxide, suds-stabilizing agent is fluorite.
2. a kind of light thermal-insulation ceramic specific complex whipping agent according to claim 1, it is characterized in that: described silicon carbide pond mud processes the washing pool of uncombined carbon and the throw out in alkali cleaning pond in the silicon carbide abrasive course of processing, the pond mud of lower floor after the uncombined carbon on extraction top layer, described mud of holding requires that carborundum content is not less than 65%, uncombined carbon is not more than 10%, and iron level is not more than %, and calcium and magnesium oxides is not more than 2%, dispersion agent is not more than 0.5%, and free silica and quartz content are not more than 20%;
Described silicon carbide dust collection powder is the silicon carbide micronic dust that in the silicon carbide abrasive course of processing, Raymond mill belt dust-precipitator is collected, and is specially Raymond mill 2#, 3# and gathers dust a mouthful collecting dust-removing powder, require that SiC content is greater than 90%;
The purity of described ferric oxide is greater than 95%;
The purity of described titanium dioxide is greater than 95%;
Described Fluorspar Powder, comprise fluorite original ore powder and fluorite breeze, require steady quality, CaF2 content is greater than 40%, and other mineralogical composition quartz, biotite, sericite, calcite, hornblende composition are also relatively stable;
The purity of described calcium carbonate is greater than 95%.
3. a kind of light thermal-insulation ceramic specific complex whipping agent according to claim 1, it is characterized in that: be that main light thermal-insulation ceramic specific complex blowing agent formulations is composed as follows with silicon carbide pond mud: silicon carbide pond mud 30-50%, ferric oxide 0-30%, titanium dioxide 0-50%, calcium carbonate 0-30%, fluorite 0-50%, each component sum is one of percentage hundred.
4. a kind of light thermal-insulation ceramic specific complex whipping agent according to claim 1, it is characterized in that: be that main light thermal-insulation ceramic specific complex blowing agent formulations is composed as follows with silicon carbide dust collection powder: silicon carbide dust collection powder 20-60%, ferric oxide 0-50%, titanium dioxide 0-60%, calcium carbonate 0-20%, fluorite 0-50%, each component sum is one of percentage hundred.
5., as profit requires a kind of light thermal-insulation ceramic specific complex whipping agent as described in 1, it is characterized in that: the use temperature of described light thermal-insulation ceramic specific complex whipping agent is between 1000-1220 degree.
6. the producing and manufacturing technique of a kind of light thermal-insulation ceramic specific complex whipping agent as claimed in claim 1, concrete steps are as follows:
Collect Raymond mill 2#, 3# respectively to gather dust mouthful collecting dust-removing powder mixing respectively, the size-grade distribution situation of 2#, 3# dust collection powder is detected with particle collector, blend mixed powder by 2#, 3# dust collection powder, make D50 between 3.00-4.00 micron, and mixing dust collection powder is mixed;
According to light thermal-insulation ceramic body material ferric oxide content and content of titanium dioxide, introduce titanium dioxide and ferric oxide, i.e. titanium dioxide and red iron oxide;
Take mixing dust collection powder 20-60 part, ferric oxide 0-50 part, titanium dioxide 0-60 part, calcium carbonate 10-20 part, Fluorspar Powder 20-50 part, each component sum is one of percentage hundred;
Composition is mixed, metering, be stored in containing for subsequent use in moistureproof interior film package bag;
Silicon carbide pond mud needs to dry to moisture lower than within 0.1%, and mix, measure size-grade distribution situation, carborundum content and free carbon content, granularity also can be blent by 3# dust collection powder, makes granularity D50 in stable interval;
Simultaneously according to light thermal-insulation ceramic body material ferric oxide content and content of titanium dioxide, introduce titanium dioxide and ferric oxide;
Take pond mud dry powder 20-50 part, ferric oxide 0-50 part, titanium dioxide 0-60 part, calcium carbonate 10-30 part, Fluorspar Powder 20-50 part, each component sum is one of percentage hundred;
Composition is mixed, metering, be stored in containing for subsequent use in moistureproof interior film package bag.
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| CN106518139A (en) * | 2016-10-31 | 2017-03-22 | 武汉理工大学 | Preparation method for heat-insulating refractory brick |
| CN106673440A (en) * | 2016-12-30 | 2017-05-17 | 信阳科美新型材料有限公司 | 3D glaze material for light-weight insulating ceramic decorative sheet, and preparation and application method thereof |
| CN106747307A (en) * | 2016-12-13 | 2017-05-31 | 信阳科美新型材料有限公司 | Heat preserving ceramic decoration composite plate and preparation method thereof |
| CN109867513A (en) * | 2019-05-05 | 2019-06-11 | 广东金意陶陶瓷集团有限公司 | A kind of preparation method of foamed ceramic |
| CN116283341A (en) * | 2023-01-17 | 2023-06-23 | 烟台大学 | Closed-cell foamed ceramic foamed at low temperature by utilizing SiC and preparation method thereof |
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| CN116283341A (en) * | 2023-01-17 | 2023-06-23 | 烟台大学 | Closed-cell foamed ceramic foamed at low temperature by utilizing SiC and preparation method thereof |
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