Milky white glass ceramic suitable for all electric melting and preparation process for milky white glass ceramic

A milky white glass and preparation technology, applied in the field of glass processing, to achieve the effect of good stability of material liquid, stable performance, rapid cooling and rapid heating of texture

Active Publication Date: 2014-12-17
WENZHOU HUISHUNDA IND TRADE
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide glass-ceramics with two textures of milky white imitation porcelain or imitation jade, which has more prominent physical and chemical properties, and also provides a corresponding preparation process capable of producing the high-performance milky white glass ceramics to solve the problems of flame method and Defects in the production of milky white glass ceramics by the existing full electrofusion method, saving energy and mineral resources, reducing costs, reducing environmental pollution, and improving the quality of finished glass ceramics

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Milky white glass ceramic suitable for all electric melting and preparation process for milky white glass ceramic

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0027] Weigh the following raw materials in parts by weight: 4.4 parts of alumina powder, 1.8 parts of barium carbonate, 0.15 parts of calcium carbonate, 0.5 parts of fluorite, 4.2 parts of potassium nitrate, 1.4 parts of magnesium oxide, 6.5 parts of borax pentahydrate, 8.3 parts of soda ash, 3.9 parts of sodium fluorosilicate, 7 parts of albite, 2 parts of sodium nitrate, 56.2 parts of quartz sand, 1.1 parts of zinc oxide, 2.8 parts of lithium carbonate, and 0.5 part of dolomite. The batch is mixed evenly, the uniformity is equal to 95%, the moisture content is 3%, and the temperature is equal to 36°C, and then it is put into an electric melting furnace for heating and melting. The maximum temperature of the furnace is 1380°C. , the molten glass flows through the liquid hole-ascending channel (distribution pool)-feeder-feeder basin, the molten glass is formed by pressing at a temperature of 1100°C, then annealed at 585°C for 60 minutes in an annealing kiln, and then sent into...

preparation example 2

[0029] Weigh the following raw materials in parts by weight: 4.2 parts of alumina powder, 1.4 parts of barium carbonate, 0.5 part of calcium carbonate, 1 part of fluorite, 2.2 parts of potassium nitrate, 0.4 part of magnesium oxide, 8.7 parts of borax pentahydrate, 7.6 parts of soda ash, 4.7 parts of sodium fluorosilicate, 17.1 parts of albite, 2.1 parts of sodium nitrate, 56.8 parts of quartz sand, 0.6 part of zinc oxide, 2.6 parts of lithium carbonate, and 0.9 part of dolomite. The batch is mixed evenly, and then put into the electric melting furnace for heating and melting. The maximum temperature of the furnace is 1400℃. Road-feeder basin, the molten glass is centrifugally formed at a temperature of 1200°C, then annealed in an annealing kiln at 590°C for 65 minutes, and sent to a tempering furnace for baking and tempering, and its appearance and physical and chemical properties are evaluated.

preparation example 3

[0031] Weigh the following raw materials in parts by weight: 4.6 parts of alumina powder, 1.3 parts of barium carbonate, 0.4 part of calcium carbonate, 0.6 part of fluorite, 18.2 parts of albite, 0.8 part of potassium nitrate, 0.7 part of magnesium oxide, 9.8 parts of borax pentahydrate 5.9 parts of soda ash, 6 parts of sodium fluorosilicate, 4 parts of sodium nitrate, 55.6 parts of quartz sand, 0.9 parts of zinc oxide, 2.3 parts of lithium carbonate, and 0.6 parts of dolomite. The batch is mixed evenly, the uniformity is equal to 95%, the moisture content is 7%, the temperature is equal to 38°C, and then it is put into the electric melting furnace for heating and melting. The maximum temperature of the furnace is 1520°C. , the molten glass flows through the liquid hole-ascending channel (distribution pool)-feeder-feeder basin, the glass molten glass is centrifugally formed at a temperature of 1280°C, and then annealed in an annealing kiln at 620°C for 70 minutes, and then sent...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Mohs hardnessaaaaaaaaaa
Login to view more

Abstract

The invention provides a milky white glass ceramic material and a preparation process thereof. The milky white glass ceramic material contains the following components: 67 to 74 percent of SiO2, 8.0 to 12 percent of Na2O, 0.3 to 2.5 percent of K2O, 6 to 9 percent of Al2O3, 3 to 5 percent of B2O3, 0.3 to 2 percent of CaO, 0.3 to 2 percent of ZnO, 0.5 to 2.5 percent of BaO, 0.3 to 2 percent of MgO, 2.5 to 4.8 percent of F and 0.5 to 2 percent of Li2O. The material is prepared by the following steps of: (1) weighing the following raw materials in part by weight: 4 to 9 parts of alumina powder, 0.5 to 3 parts of barium carbonate, 0.15 to 3.5 parts of calcium carbonate, 0.5 to 3 parts of fluorite, 0.5 to 4 parts of dolomite, 0.5 to 5 parts of potassium nitrate, 0.3 to 2 parts of magnesium oxide, 5 to 11 parts of borax pentahydrate, 5 to 10 parts of soda ash, 3.5 to 9 parts of sodium fluosilicate, 7 to 20 parts of albite, 1 to 5 parts of sodium nitrate, 50 to 70 parts of quartz sand, 0.25 to 2 parts of zinc oxide and 1 to 5 parts of lithium carbonate, and mixing the raw materials to obtain a batch; (2) putting the batch into an electric melting furnace, and performing all electric melting at the temperature of between 1,320 and 1,520 DEG C to obtain molten glass; (3) adjusting the temperature of the molten glass, and molding in a mould by a pressing or centrifugal method; (4) putting a molded product into an annealing kiln, and annealing at the temperature of between 530 and 620 DEG C for more than 60 minutes; and (5) performing toughening treatment after annealing.

Description

technical field [0001] The invention relates to the field of glass processing, in particular to a milky white glass ceramic material and a preparation process thereof. Background technique [0002] Glass-ceramics (glass-ceramics; pyzoceram; microcrystalline glass), also known as glass-ceramic, is a kind of composite material combined with crystal phase and glass made through high-temperature melting, molding, and heat treatment. [0003] The milky white glass ceramic material uses fluorite, sodium fluorosilicate, etc. as the opacifying agent. The opacifying agent is completely dissolved under high temperature conditions, and NaF and CaF crystal grains are precipitated during cooling. The refractive index of NaF and CaF crystal grains is different from that of the matrix glass. Scattering of light. The grain size of NaF and CaF is different, and different particles produce a kind of white scattering due to the overlapping of scattered light, which makes the glass ceramic pro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/16
Inventor 胡韶东潘山林王来钢
Owner WENZHOU HUISHUNDA IND TRADE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products