Preparation method of microcrystal glass

A technology of glass-ceramics and cullet, which is applied in glass manufacturing equipment, glass molding, glass rolling, etc., can solve the problems of small space for glass-ceramics, inhibit the development of glass-ceramics, and is not easy to process and shape. Good product consistency, low production cost, and the effect of reducing the output of smelting energy consumption

Inactive Publication Date: 2017-10-10
HEFEI LIYUTAI GLASS PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The glass-ceramics produced by the current mature glass-ceramic production methods all have shortcomings such as high surface porosity, low strength, high brittleness, and difficulty in processing and molding, which in turn leads to small use space, poor durability, and low market share of glass-ceramics. low, seriously inhibiting the development of the glass-ceramic industry

Method used

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  • Preparation method of microcrystal glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A preparation method of glass-ceramics, carried out according to the following steps:

[0025] (1) Weighing: Weigh the following raw materials for use: cullet 40kg, coal gangue 20kg, sanidine 15kg, anorthite 15kg, barium feldspar 15kg, sodium zeolite 15kg, borax 5kg, titanium dioxide 4kg, sodium fluorosilicate 4kg, alumina 6kg, zinc oxide 4kg, lanthanum trioxide 3kg and clarifier 1kg;

[0026] The above clarifying agent adopts two mixtures of sodium chloride and calcium sulfate, and the mass ratio between the two is 1:1;

[0027] (2) Smelting crystallization: first transport all raw materials except clarifier to the glass melting furnace, then raise the temperature of the glass melting furnace to the melting temperature of 1240°C at a rate of 40°C / min, and keep it warm for 100min to obtain glass melt;

[0028] (3) Stirring and clarification: then add the clarifier to the glass melt and stir to melt, and the stirring speed is 50r / min, the stirring time is 40min, and the...

Embodiment 2

[0032] A preparation method of glass-ceramics, carried out according to the following steps:

[0033] (1) Weighing: Weigh the following raw materials for use: cullet 50kg, coal gangue 30kg, sanidine 20kg, anorthite 20kg, barium feldspar 20kg, sodium zeolite 20kg, borax 10kg, titanium dioxide 6kg, sodium fluorosilicate 5kg, 8kg of alumina, 6kg of zinc oxide, 4kg of dilanthanum trioxide and 3kg of clarifying agent;

[0034] The above clarifying agent adopts three mixtures of antimony oxide, ammonium nitrate and cerium dioxide, and the mass ratio between the three is 1:2:1;

[0035] (2) Smelting crystallization: first transport all raw materials except clarifier to the glass melting furnace, then raise the temperature of the glass melting furnace to the melting temperature of 1300°C at a rate of 50°C / min, and keep it warm for 110min to obtain the glass melt;

[0036] (3) Stirring and clarification: then add the clarifier to the glass melt and stir to melt, and the stirring speed...

Embodiment 3

[0040] A preparation method of glass-ceramics, carried out according to the following steps:

[0041] (1) Weighing: Weigh the following raw materials for use: 60kg of cullet, 40kg of coal gangue, 25kg of sanidine, 25kg of anorthite, 25kg of feldspar, 25kg of sodium zeolite, 15kg of borax, 8kg of titanium dioxide, and sodium fluorosilicate 6kg, 10kg of alumina, 8kg of zinc oxide, 5kg of dilanthanum trioxide and 5kg of cerium dioxide clarifying agent;

[0042] (2) Smelting crystallization: first transport all raw materials except clarifier to the glass melting furnace, then raise the temperature of the glass melting furnace to the melting temperature of 1360°C at a rate of 60°C / min, and keep it warm for 120min to obtain the glass melt;

[0043] (3) Stirring and clarification: then add the clarifier to the glass melt and stir to melt, and the stirring speed is 70r / min, the stirring time is 60min, and then stand for clarification treatment for 3h;

[0044] (4) Compression molding...

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Abstract

The invention discloses a preparation method of microcrystal glass and relates to the technical field of glass products. The preparation method comprises the following steps: 1) weighing materials, namely broken glass, coal gangue, sanidine, anorthite, barium feldspar, natrolite, borax, titanium dioxide, sodium fluorosilicate, aluminum oxide, zinc oxide, lanthanum trioxide and a clarifying agent; 2) smelting and carrying out crystallization treatment on other raw materials except the clarifying agent, so that glass melt is obtained; 3) adding the clarifying agent into the glass melt, stirring, melting, and carrying out clarification treatment; 4) pouring the clarified glass melt into a preheated mould through a material channel, and carrying out compression moulding by virtue of a calendaring machine; and 5) conveying the moulded glass product into a heat treatment furnace with the mould together, and carrying out annealing treatment, so that the microcrystal glass is obtained. The microcrystal glass is simple to prepare, low in production cost, compact in structure and pore-free, has the characteristics of high flexural strength and compressive strength, good toughness and good machining properties and is long in service life and applicable to popularization and application.

Description

technical field [0001] The invention relates to the technical field of glass products, in particular to a preparation method of glass-ceramics. Background technique [0002] With the steady and continuous development of my country's national economy, people's living standards are improving, and the demand for high-grade building materials is increasing, especially the demand for alternative products of non-radiation high-grade stone is more urgent, but domestic high-grade stone substitute products are brittle. It is not easy to process and shape, so many high-grade stone materials need to be imported from abroad, and the cost is greatly increased. [0003] Glass-ceramics, also known as ceramic glass, has dual characteristics of glass and ceramics; glass-ceramics is composed of crystals, and its atomic arrangement is regular. Therefore, glass-ceramics has higher brightness than ceramics and stronger toughness than glass. Glass-ceramics combines the triple advantages of glass,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03B13/00C03B25/02
CPCC03C10/0063C03B13/00C03B25/02
Inventor 武娟
Owner HEFEI LIYUTAI GLASS PROD CO LTD
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