CN102173824B - Ceramic green body additive capable of reducing firing temperature as well as preparation method and application thereof - Google Patents
Ceramic green body additive capable of reducing firing temperature as well as preparation method and application thereof Download PDFInfo
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- CN102173824B CN102173824B CN 201010585437 CN201010585437A CN102173824B CN 102173824 B CN102173824 B CN 102173824B CN 201010585437 CN201010585437 CN 201010585437 CN 201010585437 A CN201010585437 A CN 201010585437A CN 102173824 B CN102173824 B CN 102173824B
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Abstract
The invention discloses a ceramic green body additive capable of reducing firing temperature as well as a preparation method and application thereof. The additive comprises the following components in parts by weight: 35-45 parts of potassium feldspar, 30-36 parts of quartz, 4.0-6.0 parts of kaolin, 2.0-6.0 parts of talc, 18-25 parts of lithium feldspar and 0.5-1.5 parts of lanthanum oxide. By adopting the additive, the firing temperature can be reduced by 50-70 DEG C, and the density and mullite crystalline phase quatity of the ceramic green body are basically constant; and under the condition that the glass phase content is slightly increased, the good thermal shock resistance of the product can be maintained. The additive provided by the invention is characterized in that the energy-saving effect is obvious, and the product can still have high quality and good application prospect.
Description
Technical field
The present invention relates to the batching of body and glaze of domestic ceramics industry, particularly a kind of ceramic body additive and method for making and application that reduces firing temperature.
Background technology
Ceramic industry belongs to high energy-consuming industry, particularly domestic ceramics industry, and the firing temperature height, firing time is long, and energy consumption is big especially.Domestic ceramic product can be divided into pyroceramic, medium temperature ceramics and low-temp ceramics three major types by firing temperature, and its price (referring to series products of the same race) is directly proportional with firing temperature, that is to say that the pyroceramic price is higher, and medium temperature ceramics takes second place, and the low-temp ceramics price is lower.In order to cut down the consumption of energy, many domestic ceramics manufacturing enterprises add simple flux raw material in base substrate, maximum sintering temperature is dropped to about 1270 ℃ from about 1360 ℃, energy consumption also decreases, but simple flux raw material can not play the effect that improves porcelain base immanent structure, and the inner quality of product such as density, mullite crystal content, thermal shock resistance etc. differ bigger with the product that high temperature burns till, thereby make product fall into the medium temperature ceramics classification, the product price also descends thereupon.Make that manufacturing enterprise is real benefits very little even lose more than gain.
Summary of the invention
The objective of the invention is to overcome at present the shortcoming for reducing the simple property flux of ceramic product firing temperature.A kind of ceramic body additive and method for making and application that reduces firing temperature is provided.This compound type that adds adds agent and can reduce by 50 ℃-70 ℃ of firing temperatures, can keep the density of porcelain base and mullite crystalline phase amount constant substantially again, under the situation that glassy phase content slightly increases, can make product keep good thermal shock resistance.Characteristics of the present invention are that energy-saving effect is obvious, and the quality level before product still can keep lowering the temperature has good application prospects.
The object of the invention is achieved through the following technical solutions:
A kind of additive that reduces firing temperature raising ceramic product quality is made up of potassium felspar sand, quartz, kaolin, talcum, lithium feldspar and lanthanum trioxide.
The parts by weight of each component are:
Feldspar 35-45 part
Quartzy 30-36 part
Kaolin 4.0-6.0 part
Talcum 2.0-6.0 part
Lithium feldspar 18-25 part
Lanthanum trioxide 0.5-1.5 part.
Prepare the method for described additive, may further comprise the steps:
(1) take by weighing raw material by prescription, to crossing 300 mesh sieves, screen over-size is 0.5-1.0%wt with the raw material wet ball grinding;
(2) slip after sieving is through being dehydrated into mud cake;
(3) oven dry mud cake to water ratio is 1.0-2.0%wt;
(4) pulverize mud cake, cross 60 mesh sieves.
Step (1) is described to take by weighing before the raw material, and raw material is crossed 160 mesh sieves.
Each raw materials in part by weight is in the described prescription:
Feldspar 35-45 part
Quartzy 30-36 part
Kaolin 4.0-6.0 part
Talcum 2.0-6.0 part
Lithium feldspar 18-25 part
Lanthanum trioxide 0.5-1.5 part.
The application of described additive in ceramic product is made, the add-on of described additive is the 1.5-3.0%wt of base substrate siccative amount.
Technological principle of the present invention: the potassium in the composite additive, sodium, lithium play the flux effect, can suitably increase the glass phasor in the porcelain base, play the effect that reduces firing temperature, and contained lithium, magnesium and rare earth oxide la in the additive
2O
3Micro-binding substances can promote separating out of mullite crystallite in the glassy phase, the fragility of improving the porcelain base and the resistance to impact shock that improves the porcelain base are had splendid effect.The existence of lithium can reduce the thermal expansivity of porcelain base, has ensured the stable of porcelain base thermal shock resistance.
Advantage and beneficial effect that the present invention has with respect to prior art:
Preparation technology of the present invention is simple, and for ceramic enterprise, need not to increase specific installation can implement.For preparation technology parameter, also basic identical with the ceramic batch preparation technology parameter, just this additive particle size is than the granularity of blank preparation choice refreshments slightly, about 250 mesh sieves of common ceramic batch prepared sizes, it is 300 mesh sieve surplus 0.5-1.0%wt that screen over-size 0.5-1.2%wt, this additive then require prepared sizes.(1.5-3.0%wt of base substrate siccative amount) additive purpose that can reach energy-saving and emission-reduction, shorten firing period, reduce production costs on a small quantity.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
Embodiment
Embodiment 1
Described prescription:
35 parts of feldspars
Quartzy 30 parts
6.0 parts of kaolin
6.0 parts in talcum
25 parts of lithium feldspars
1.5 parts of lanthanum trioxides
Shown in schema 1 process flow sheet of the present invention, present embodiment prepares in six kinds of used raw materials of additive, and potassium felspar sand, quartz, kaolin, talcum, lithium feldspar are natural matters for five kinds, buy with powder-form, and a kind of is industrial chemicals la
2O
3, purity is 99.99%.Material fineness is all crossed 160 mesh sieves.Go into ball mill by wet process by prescription behind the accurate feed proportioning, discharging when being milled to fineness and crossing 300 mesh sieve screen over-size 0.5%wt.Slip pumps into the pressure filter dehydration, and the mud cake after the dehydration is dried to water ratio 1.0-2.0%wt, and it is standby then the mud cake of oven dry to be pulverized 60 mesh sieves warehouse-in.
The add-on of additive in base substrate is the 3.0%wt of base substrate siccative amount.Firing temperature is down to 1280 ℃ from 1350 ℃, burns till burnup and can reduce by 12%; Firing time can shorten more than 12%.Add behind the additive in 1280 ℃ of products that burn till the product performance basically identical (seeing Table 1) that burns till under its performance and the 1350 ℃ of temperature.The national standard " GB/T3532-2009 domestic porcelain " that all meets domestic porcelain.The premium properties that has kept pyroceramic.
Table 1 domestic porcelain quality examination result
Embodiment 2
Described prescription:
45 parts of feldspars
Quartzy 36 parts
4.0 parts of kaolin
2.0 parts in talcum
18 parts of lithium feldspars
0.5 part of lanthanum trioxide.
Shown in schema 1 process flow sheet of the present invention, present embodiment prepares in six kinds of used raw materials of additive, and potassium felspar sand, quartz, kaolin, talcum, lithium feldspar are natural matters for five kinds, buy with powder-form, and a kind of is industrial chemicals la
2O
3, purity is 99.99%.Material fineness is all crossed 160 mesh sieves.Go into ball mill by wet process by prescription behind the accurate feed proportioning, discharging when being milled to fineness and crossing 300 mesh sieve screen over-size 1%wt.Slip pumps into the pressure filter dehydration, and the mud cake after the dehydration is dried to water ratio 1.0-2.0%wt, and it is standby then the mud cake of oven dry to be pulverized 60 mesh sieves warehouse-in.
The add-on of additive in base substrate is the 1.5%wt of base substrate siccative amount.Firing temperature is down to 1310 ℃ from 1380 ℃, burns till burnup and can reduce by 12%; Firing time can shorten more than 12%.Add behind the additive in 1310 ℃ of products that burn till the product performance basically identical (seeing Table 2) that burns till under its performance and the 1380 ℃ of temperature.The national standard " GB/T3532-2009 domestic porcelain " that all meets domestic porcelain.The premium properties that has kept pyroceramic.
Table 2 domestic porcelain quality examination result
Claims (4)
1. a ceramic body additive that reduces firing temperature is characterized in that, is made up of potassium felspar sand, quartz, kaolin, talcum, lithium feldspar and lanthanum trioxide, and the parts by weight of each component are:
Potassium felspar sand 35-45 part
Quartzy 30-36 part
Kaolin 4.0-6.0 part
Talcum 2.0-6.0 part
Lithium feldspar 18-25 part
Lanthanum trioxide 0.5-1.5 part.
2. prepare the method for the described additive of claim 1, it is characterized in that, may further comprise the steps:
(1) take by weighing raw material by prescription, to crossing 300 mesh sieves, screen over-size is 0.5-1.0wt% with the raw material wet ball grinding;
(2) slip after sieving is through being dehydrated into mud cake;
(3) oven dry mud cake to water ratio is 1.0-2.0wt%;
(4) pulverize mud cake, cross 60 mesh sieves.
3. according to the described method of claim 2, it is characterized in that step (1) is described to take by weighing before the raw material, raw material is crossed 160 mesh sieves.
4. the application of the described additive of claim 1 in ceramic product is made is characterized in that the add-on of described additive is the 1.5-3.0wt% of base substrate siccative amount.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010585437 CN102173824B (en) | 2010-12-10 | 2010-12-10 | Ceramic green body additive capable of reducing firing temperature as well as preparation method and application thereof |
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| CN 201010585437 CN102173824B (en) | 2010-12-10 | 2010-12-10 | Ceramic green body additive capable of reducing firing temperature as well as preparation method and application thereof |
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| CN102173824A CN102173824A (en) | 2011-09-07 |
| CN102173824B true CN102173824B (en) | 2013-08-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106116463A (en) * | 2016-06-22 | 2016-11-16 | 徐晓 | The preparation method of low grade fever's glazed tiles additive |
| CN106082958A (en) * | 2016-06-22 | 2016-11-09 | 徐晓 | A kind of preparation method of low grade fever's glazed tiles additive |
| CN109400111B (en) * | 2018-11-14 | 2021-07-13 | 王远川 | Sanitary ware cooling blender and using method thereof |
| CN112811886B (en) * | 2021-01-16 | 2022-11-22 | 陕西科技大学 | Battery sagger and preparation method thereof |
| CN113087506B (en) * | 2021-03-02 | 2022-08-05 | 福建省春秋陶瓷实业有限公司 | Ceramic artwork and preparation method thereof |
| CN113072366A (en) * | 2021-03-04 | 2021-07-06 | 中国地质大学（北京） | Method for preparing mullite complex-phase ceramic by sintering bauxite tailings and potassium feldspar at low temperature |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544385A (en) * | 2003-11-13 | 2004-11-10 | 上海大学 | Reinforced daily ceramic manufacturing process |
| CN101759440A (en) * | 2009-12-18 | 2010-06-30 | 深圳市永丰源实业有限公司 | Lead-free ceramic glaze and preparation process thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1544385A (en) * | 2003-11-13 | 2004-11-10 | 上海大学 | Reinforced daily ceramic manufacturing process |
| CN101759440A (en) * | 2009-12-18 | 2010-06-30 | 深圳市永丰源实业有限公司 | Lead-free ceramic glaze and preparation process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 权利要求1、4. |
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