Microcrystalline glass taking coal cinder as main raw material and preparation method thereof

A technology for glass-ceramic and main raw materials, applied in the field of glass-ceramic and its preparation, can solve the problems of preparing glass-ceramic and less coal slag, and achieve the effects of promoting crystal precipitation, easy melting, and reducing crystallization activation energy

Inactive Publication Date: 2020-04-03
中炀新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the current technologies are aimed at the preparation of glass-ceramics from secondary resources such as slag, tailings, and fly ash, and few use coal slag to prepare glass-ceramics

Method used

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  • Microcrystalline glass taking coal cinder as main raw material and preparation method thereof

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preparation example Construction

[0025] The preparation method of the glass-ceramic with coal slag as the main raw material comprises the following steps:

[0026] S1: Weigh cinder, quartz sand, dolomite, calcite, soda ash, borax, barium carbonate, zirconia, titanium powder, and sulfur in proportion, and mix them uniformly to obtain batch materials;

[0027] S2: Melt the batch material obtained in step A at a temperature of 1550-1600°C in a melting furnace to obtain molten glass, lower the temperature of the melted molten glass to 1100-1150°C, and then enter the calender for compression molding to obtain base glass;

[0028] S3: Send the obtained basic glass into a crystallization furnace, undergo nucleation, crystallization, and annealing treatments, wherein the nucleation temperature is 700-750°C, the nucleation time is 2 hours, the crystallization temperature is 880-930°C, The melting time is 3 hours, the annealing temperature is 800-850° C., and then the finished glass-ceramic is obtained through cutting...

Embodiment 1

[0030] A glass-ceramic with cinder as the main raw material, comprising the following raw materials by weight percentage: 54.5% of cinder, 13.2% of quartz sand, 8.8% of dolomite, 9.7% of calcite, 7.0% of soda ash, 3.5% of borax, and 2.5% of barium carbonate , zirconia 0.4%, titanium powder 0.2%, sulfur 0.2%.

[0031] The preparation method of the glass-ceramic with coal slag as the main raw material comprises the following steps:

[0032]S1: Weigh cinder, quartz sand, dolomite, calcite, soda ash, borax, barium carbonate, zirconia, titanium powder, and sulfur in proportion, and mix them uniformly to obtain batch materials;

[0033] S2: Melting the batch material obtained in step A at a temperature of 1550°C in a melting furnace to obtain molten glass, lowering the temperature of the melted molten glass to 1120°C, and then entering the calender for compression molding to obtain the basic glass;

[0034] S3: Send the obtained basic glass into a crystallization furnace, undergo n...

Embodiment 2

[0036] A glass-ceramic with cinder as the main raw material, comprising the following raw materials by weight percentage: 56.3% cinder, 12% quartz sand, 9% dolomite, 8% calcite, 9% soda ash, 2% borax, and 2.8% barium carbonate , zirconia 0.5%, titanium powder 0.1%, sulfur 0.3%.

[0037] The preparation method of the glass-ceramic with coal slag as the main raw material comprises the following steps:

[0038] S1: Weigh cinder, quartz sand, dolomite, calcite, soda ash, borax, barium carbonate, zirconia, titanium powder, and sulfur in proportion, and mix them uniformly to obtain batch materials;

[0039] S2: Melt the batch material obtained in step A at a temperature of 1580°C in a melting furnace to obtain molten glass, lower the temperature of the melted molten glass to 1100°C, and then enter the calender for compression molding to obtain the basic glass;

[0040] S3: Send the obtained basic glass into a crystallization furnace, undergo nucleation, crystallization, and anneali...

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Abstract

The invention provides microcrystalline glass with coal cinder as a main raw material and a preparation method thereof, and belongs to the technical field of microcrystalline glass preparation. Themicrocrystalline glass with the coal cinder as the main raw material comprises the following raw material components in percentage by weight: 52-63% of the coal cinder, 12-18% of quartz sand, 8-13% of dolomite, 7-15% of calcite, 5-12% of sodium carbonate, 2-5% of borax, 2.5-3.1% of barium carbonate, 0.3-0.7% of zirconium oxide, 0.1-0.3% of titanium powder and 0.1-0.3% of sulfur. According to the invention, the components required by the microcrystalline glass are contained in the coal cinder, the coal cinder is used as the main raw material, ZrO2 / TiO2 is used as a nucleating agent, waste is turned into wealth, the trouble that a large amount of coal cinder occupies land is eliminated, the environment is greened, and meanwhile, the coal cinder is used as the main raw material, so that the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of glass-ceramic preparation, and in particular relates to a glass-ceramic whose main raw material is coal slag and a preparation method thereof. Background technique [0002] Glass-ceramics is a new type of inorganic material in the ascendant in today's world. A newcomer in the glass family. Its scientific name is glass ceramics, also called microcrystalline stone. With the dual characteristics of glass and ceramics, the atomic arrangement inside ordinary glass is irregular, which is one of the reasons why glass is fragile. The glass-ceramic is made by subjecting the glass to a certain heat treatment to precipitate a uniform crystal phase inside, so that it is brighter than ceramics and stronger than glass. Its hardness can be made harder than steel. If a glass-ceramic tube is used as a hammer, nails can be driven into wood without any damage to the glass tube. It also almost does not expand when heated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00
CPCC03C10/0063
Inventor 黄术军甘露王佑鹏
Owner 中炀新材料科技有限公司
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