Daily use ceramics and preparation method thereof

A manufacturing method and ceramic technology, applied in the field of daily-use ceramics and its manufacture, can solve the problems of high lead and cadmium dissolution, rough surface features, poor glaze formulation, etc., and achieve low lead and cadmium dissolution, smooth surface and good appearance. White and pure effect

Active Publication Date: 2011-09-21
福建省德化县全丰陶瓷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to overcome the poor appearance quality, rough surface features, low whiteness, lead and cadmium dissolution caused by the ubiquitous blanks and glaze formulations and backward firing systems in the prior art. In order to solve the disadvantages such as relatively high quantity, a kind of daily-use ceramics and its manufacturing method are provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of pottery for daily use, take the manufacture of ceramic pots as an example here,

[0023] Billet formula: based on Li 2 O-Al 2 o 3 -SiO 2 There is a region where the coefficient of thermal expansion of the β-spodumene solid solution is negative in the system. After repeated tests, the chemical composition of the billet by weight percentage is Li 2 O 8.5%, Al 2 o 3 31.5%, SiO 2 60%; the mineral composition is spodumene (Li 2 O·Al 2 o 3 4SiO2 2 ) 28%, kaolin (Al 2 o 3 2SiO2 2 2H 2 O) 20%, bentonite (Al 2 o 3 4SiO2 2 ·H 2 O·nH 2 O) 3%, magnesia clay 19%, quartz (SiO 2 )21%, mullite (3Al 2 o 3 2SiO2 2 ) and cordierite (2MgO·2Al 2 o 3 ·5SiO2 2 )9%;

[0024] Glaze formula: it is based on the fact that the expansion coefficient of the glaze layer of the product is close to that of the body, and is well combined with the body to form a hard transition layer, and the product meets the appearance quality requirements of daily-use ceramics. Re...

Embodiment 2

[0030] A kind of pottery for daily use, take the manufacture of ceramic pots as an example here,

[0031] Billet formula: based on Li 2 O-Al 2 o 3 -SiO 2 There is a region where the coefficient of thermal expansion of the β-spodumene solid solution is negative in the system. After repeated tests, the chemical composition of the billet by weight percentage is Li2 O 7.5%, Al 2 o 3 30.5%, SiO 2 62%;

[0032] Glaze formula: it is based on the fact that the expansion coefficient of the glaze layer of the product is close to that of the body, and is well combined with the body to form a hard transition layer, and the product meets the appearance quality requirements of daily-use ceramics. Repeated tests, the chemical composition of the glaze obtained by weight percentage is SiO 2 49.4%, Al 2 o 3 30.2%, Li 2 O 7.4%, ZrO 2 2.0%, P 2 o 5 2.4%, TiO 2 2.8%, Na 2 O 0.8%, K 2 O 1.2%, B 2 o 3 2.6%, PbO 1.2%; in order to improve the surface gloss and thermal stabilit...

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PUM

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Abstract

The invention relates to the field of daily use ceramics, in particular to daily use ceramics and a preparation method thereof, wherein, the blank for the daily use ceramics comprises 7-10wt% Li2O, 30-33wt% Al2O3, and 58-62wt% SiO2; the glaze comprises 48-52% SiO2, 28-31wt% Al2O3, 6-9wt% Li2O, 1-2wt% ZrO2, 2-3wt% P2O5, 2-3wt% TiO2, 0.5-1.5wt% Na2O, 0.5-1.5wt% K2O, 2-4wt% B2O3, and 0.5-1.5wt% PbO;and 4-6 wt% clay is added into the glaze in addition before glazing. Compared with the prior art, the preparation method in the invention, by improving the formulas of the blank and the glaze and thefiring process, allows the water absorption to be changed from 3.5% to less than 15%, meeting the requirement of users, improving the heat preservation of the products, reducing the sintering temperature to about 40 DEG C, and reducing the cost greatly.

Description

technical field [0001] The invention relates to the field of daily-use ceramics, in particular to a daily-use ceramic and a manufacturing method thereof. Background technique [0002] In the prior art, daily-use ceramics, especially heat-resistant ceramic pots, generally have poor appearance quality, rough surface features, low whiteness, high lead and cadmium dissolution, high production costs, and low thermal insulation performance. The main reason for the problem is that the blank and glaze formulations are not good, and the firing system is backward, and the high production cost is mainly due to the large amount of expensive spodumene used as the main low-expansion raw material. Contents of the invention [0003] The main purpose of the present invention is to overcome the poor appearance quality, rough surface features, low whiteness, lead and cadmium dissolution caused by the ubiquitous blanks and glaze formulations and backward firing systems in the prior art. In o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/14C04B41/86C04B35/64
Inventor 林福椿连文盼
Owner 福建省德化县全丰陶瓷有限公司
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