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Opal glass suitable for full electrofusion forming and preparation process thereof

A milky white glass and preparation technology, applied in the direction of electric furnace, furnace type, furnace, etc., can solve the problems of many product defects, strong corrosion of glass, etc., and achieve the effects of green production, uniform chemical composition, and short production cycle

Inactive Publication Date: 2010-06-02
CHINA HOUSEHOLD ELECTRIC APPLIANCE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main performance is that the glass is highly corrosive and has many product defects.

Method used

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  • Opal glass suitable for full electrofusion forming and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] The preparation process of the invention is as follows: raw material crushing-mixing-full electric melting-molding. First of all, after the raw materials are selected and washed, they are coarsely and mediumly crushed by jaw crusher, hammer crusher or impact crusher, and finely crushed by ball mill. ~100 meshes; then, crush the base material, auxiliary materials and additives and weigh them accurately according to the requirements, then mix them in the mixer, and the uniformity should reach more than 98%;

[0018] Secondly, use all-electric melting to prepare milky white glass at a temperature of 1480-1520°C, and evenly spread a thin layer of uniformly mixed batch material on the glass liquid surface in a 10-square-meter all-electric melting furnace to make the entire batch material fully Melting, homogenizing and refining are carried out to ensure that the glass melts uniformly and without bubbles. Adjust its thickness according to the condition of the cold material l...

example 1

[0021] Example 1 uses material side 1 test, and each composition is as follows: SiO 2 71.0%, Al 2 o 3 6.0%, B 2 o 3 5%, CaO 1.0%, Na 2 O 10.5%, K 2 O 1.0%, ZnO 1.5%, F- 3.0%, BaO 1.0%, each ingredient is crushed to 60 mesh and mixed, the batch is mixed evenly, and then put into an electric furnace to heat and melt, the maximum temperature of the furnace is 1480°C, each group in the batch Parts are fully melted, homogenized and clarified. Then it was taken out for blow molding, and its appearance and physical and chemical properties were evaluated.

example 2

[0022] Example 2 uses material side 2 test, and each composition is as follows: SiO 2 69.5%, Al 2 o 3 6.75%, B 2 o 3 4.25%, CaO 1.25%, Na 2 O 9.75%, K 2 O 1.5%, ZnO 2.0%, F - 3.5%, BaO 1.5%, each ingredient is crushed to 80 mesh and mixed, the batch is evenly mixed, and then put into an electric furnace to heat and melt. The samples were taken out and blown into molds, and their appearance and physical and chemical properties were evaluated.

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Abstract

The invention discloses an opal glass suitable for full electrofusion forming and a preparation process thereof. The opal glass is prepared by composing a batch mixture by mixing a base material, an auxiliary material and an additive and adopting a full electrofusion method at the temperature of 1480-1520 DEG C; and the components of the batch mixture comprise the following components expressed as oxides in percentage by weight: 68.0-71.0% of SiO2, 6.0-7.5% of Al2O3, 1.0-1.5% of CaO, 9.0-10.5% of Na2O, 3.0-4.0% of F-, 1.5-2.5% of ZnO, 3.5-5.0% of B2O3, 1.0-2.0% of BaO and 1.0-2.0% of K2O. The opal glass prepared by the process has thermal expansion coefficient alpha less than or equal to 7.8*10-6 / DEG C, saves the energy by 50 percent as compared with the transitional method, achieves the mohs hardness of 6.8, the thermal shock resistance more than 125 DEG C and the water resistance of a primary standard, has main performance indexes all achieving or exceeding the level of similar imported products, meets the requirements for environmental protection and health and is an ideal substitute of the transitional porcelain product.

Description

technical field [0001] The invention relates to opalescent glass and its preparation process, in particular to a formula of opalescent crystal porcelain glass suitable for all-electric melting molding and its preparation process. Background technique [0002] The production process of domestic traditional opal glass tableware is mainly flame melting kiln. Its formula has been relatively mature after exploration in the past ten years. However, the use of all-electric melting furnaces to produce opal glass tableware is still a matter of the past one or two years in China. Copying the formula process of the flame melting kiln has encountered a lot of difficulties in actual production. The main performance is that the glass is highly corrosive and has many product defects. In particular, the defect commonly known as "white spot" is much more serious than that of flame melting kiln. Contents of the invention [0003] The purpose of the present invention is to provide a milk...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/118C03B5/02
CPCC03C1/04C03C3/118C03C4/005
Inventor 邴旭卫曾宪贵刘家新
Owner CHINA HOUSEHOLD ELECTRIC APPLIANCE RES INST
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