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A process for producing beta-wollastonite glass-ceramic by utilizing calcium silicate tailings

A technology of glass-ceramics and calcium silicate, which is applied in the field of producing β-wollastonite glass-ceramics to improve product performance

Inactive Publication Date: 2016-01-27
昊青薪材(北京)技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to solve the problem of comprehensive utilization of the remaining tailings of the alumina process in the process of extracting potassium and alumina from non-water-soluble potassium salts and the improved soda lime sintering method of unconventional aluminum-containing raw materials, so as to improve the utilization rate of resources and improve the quality of products. Added value, increasing the economy of the entire process

Method used

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  • A process for producing beta-wollastonite glass-ceramic by utilizing calcium silicate tailings
  • A process for producing beta-wollastonite glass-ceramic by utilizing calcium silicate tailings
  • A process for producing beta-wollastonite glass-ceramic by utilizing calcium silicate tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Preparation of hydrated sodium aluminosilicate by alkali solution desiliconization of high alumina coal gangue and extraction of alumina from hydrated sodium aluminosilicate

[0063] The chemical composition analysis results of calcium silicate tailings (w B %)as follows:

[0064]

[0065] Accurately weigh 700g of calcium silicate tailings (SC-01), 200g of nepheline syenite, 60g of quartz sand and 50g of borax, and place them in a ball mill for dry grinding for 2 hours to obtain a mixture of -200 mesh > 90% by weight. Powder. Put the mixed powder in a high-temperature furnace and melt it at 1300-1500°C for 2-5 hours to obtain molten glass. Take out the molten glass and pour it into cold water at 20-30°C for 5-20 minutes to prepare basic glass particles. . Dry the basic glass particles at 80-200°C for 1-12 hours, and ball-mill the basic glass particles for 1-3 hours to a basic glass powder with a particle size of 0.1-0.01mm, put it into a steel mold of a certain sh...

Embodiment 2

[0072] Preparation of hydrated sodium aluminosilicate by alkali solution desiliconization of high alumina coal gangue and then extracting silicon after alumina from hydrated sodium aluminosilicate

[0073] The chemical composition analysis results of calcium acid tailings (w B %)

[0074]

[0075] Accurately weigh 500 g of calcium silicate tailings (SC-02), 150 g of nepheline syenite, 45 g of quartz sand, and 30 g of borax, and place them in a ball mill for dry grinding for 2 hours to obtain a mixture of -200 mesh > 90% by weight. Powder. Put the mixed powder in a high-temperature furnace and melt it at 1300-1500°C for 2-5 hours to obtain molten glass. Take out the molten glass and pour it into cold water at 20-30°C for 5-20 minutes to prepare basic glass particles. . Dry the basic glass particles at 80-200°C for 1-12 hours, and ball-mill the basic glass particles for 1-3 hours to a basic glass powder with a particle size of 0.1-0.01mm, put it into a steel mold of a cert...

Embodiment 3

[0082] A kind of pre-desilication of potassium-rich rocks to prepare potassium sodium silicate, the filter cake is hydrated sodium aluminosilicate, the hydrated sodium aluminosilicate is sintered by improving soda lime, the chemical composition analysis of the remaining calcium silicate tailings after the preparation of alumina result (w B %)

[0083]

[0084]Accurately weigh 1000g of calcium silicate tailings (SC-03) and 320g of nepheline syenite, as well as 85g of quartz sand and 63g of borax, and place them in a ball mill for dry grinding for 2 hours to obtain -200 mesh>90% by weight Mix the powder. Put the mixed powder in a high-temperature furnace and melt it at 1300-1500°C for 2-5 hours to obtain molten glass. Take out the molten glass and pour it into cold water at 20-30°C for 5-20 minutes to prepare basic glass particles. . Dry the basic glass particles at 80-200°C for 1-12 hours, and ball-mill the basic glass particles for 1-3 hours to a basic glass powder with ...

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Abstract

The invention relates to a process for producing beta-aedelforsite microcrystalline glass by using calcium silicate tailings. The process comprises a basic glass preparation process and a basic glass thermal treatment process. The process comprises the following steps: performing uniform ball milling on calcium silicate tailings, nepheline syenite, quartz sand and borax, melting the mixed powder at 1,300-1,500 DEG C for 2-5 hours to obtain glass metal, and pouring the glass metal into cold water to obtain basic glass particles; drying the basic glass particles, performing ball milling to obtain basic glass powder, and placing the basic glass powder into a steel die for pressure molding; nucleating a pressed blank at 500-900 DEG C for 30-120 minutes, and crystalizing at 500-1,200 DEG C for 30-150 minutes to obtain the beta-aedelforsite microcrystalline glass having a good decorating function. The process is wide in raw material source, and plays a good role in protecting the environment. The problem of emission of tailings in a process for extracting potassium from water-insoluble kali salt and the non-conventional process for extracting aluminum from aluminum-containing raw materials is solved effectively. Moreover, the process flow is simple, the production performance is excellent, and the additional value is high.

Description

technical field [0001] The invention relates to a process for producing β-wollastonite glass-ceramics by utilizing calcium silicate tailings. Background technique [0002] β-Wollastonite glass-ceramics is a new type of high-grade building material, which is often prepared by sintering in industry. It is easy to crystallize on the surface, forming a large number of crystal interfaces, showing crystal flowers of uneven thickness, which can be seen from the glass phase, three-dimensional sense, layering, with a strong decorative effect. Because of its dense structure, uniform crystal phase distribution, high strength, wear resistance, corrosion resistance, clear appearance texture, bright colors, no color difference, no fading, etc., it is deeply loved by consumers and is considered to be the modern product of the 21st century. Ideal high-grade green building materials for building complexes. [0003] This application uses calcium silicate tailings as the main raw material, w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/04C03C6/04
Inventor 陈建张盼杨静马鸿文
Owner 昊青薪材(北京)技术有限公司
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