Diopside and feldspar main crystal phase glass-ceramics and preparation method thereof

A technology of glass-ceramic and main crystalline phase, applied in the field of building decoration materials, can solve the problems of easy warping and deformation of plates and high porosity, and achieve the effects of excellent acid and alkali resistance, lower melting temperature and lower raw material cost.

Active Publication Date: 2019-02-01
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest problem of the sintering method at present is that the product has a high porosity and the plate is easy to warp and deform

Method used

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  • Diopside and feldspar main crystal phase glass-ceramics and preparation method thereof
  • Diopside and feldspar main crystal phase glass-ceramics and preparation method thereof
  • Diopside and feldspar main crystal phase glass-ceramics and preparation method thereof

Examples

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Effect test

Embodiment 1

[0033] A preparation method of diopside and feldspar main crystal phase glass-ceramics, specifically comprising the following steps:

[0034] 1) Batching and mixing: raw materials are weighed according to the proportioning ratio, and each component includes: 30 parts of iron tailings, SiO 2 49 copies, Al 2 o 3 8 parts, CaO 3 parts, MgO 2 parts, Na 2 CO 3 4 parts, ZnO 2 parts, B 2 o 3 1 part; after mixing the weighed raw materials evenly, put them into a vibrating mill and grind to no less than 95wt% below 200 mesh to obtain the mixed raw materials;

[0035] 2) Melting and water quenching treatment: put the obtained mixed raw material into a corundum crucible, put it into a silicon molybdenum rod high-temperature electric furnace, heat it to 1450 ° C for 2 hours, and perform melting treatment, pour the obtained molten liquid into cold water for water quenching treatment, and then drying the obtained glass pellets, and grinding to a particle size of less than 100 mesh to o...

Embodiment 2

[0040] A preparation method of diopside and feldspar main crystal phase glass-ceramics, specifically comprising the following steps:

[0041] 1) Batching and mixing: raw materials are weighed according to the proportioning ratio, and each component includes: 30 parts of iron tailings, SiO 2 49 copies, Al 2 o 3 8 parts, CaO 3 parts, MgO 2 parts, Na 2 CO 3 4 parts, ZnO 2 parts, B 2 o 3 1 part; after mixing the weighed raw materials evenly, put them into a vibrating mill and grind to no less than 95wt% below 200 mesh to obtain the mixed raw materials;

[0042] 2) Melting and water quenching treatment: put the obtained mixed raw materials into a corundum crucible, put them into a silicon-molybdenum rod high-temperature electric furnace, heat to 1450 ° C for 2.5 hours, and carry out melting treatment, and pour the obtained molten liquid into cold water for Water quenching treatment, then drying the obtained glass pellets, and grinding to a particle size of less than 100 mesh ...

Embodiment 3

[0047] A preparation method of diopside and feldspar main crystal phase glass-ceramics, specifically comprising the following steps:

[0048] 1) Batching and mixing: raw materials are weighed according to the ratio, and each component includes: 30 parts of iron tailings, 6 parts of calcite, 16 parts of potassium feldspar, 39 parts of quartz, 2 parts of MgO, Al 2 o 3 5 parts, ZnO2 parts, B 2 o 3 1 part; after mixing the weighed raw materials evenly, put them into a vibrating mill and grind to no less than 95wt% below 200 mesh to obtain the mixed raw materials;

[0049] 2) Melting and water quenching treatment: put the obtained mixed raw material into a corundum crucible, put it into a silicon-molybdenum rod high-temperature electric furnace, heat it to 1450 ° C for 2 hours, and carry out melting treatment, and pour the obtained molten liquid into cold water for Water quenching treatment, then drying the obtained glass pellets, and grinding to a particle size of less than 100...

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Abstract

The invention discloses a method for preparing diopside and feldspar main crystal phase microcrystalline glass, by taking low silicon high calcium magnesium type iron tailings as main raw material and using sintering process. By adding iron tailings to the formulation of microcrystalline glass, the mixed raw materials are melted in hot water and then glass pellets are formed. The glass pellets are laid in a certain way and finally microcrystalline glass mainly comprising of diopside and feldspar is formed after sinterring, crystallizing and shakeouting. The method requires simple process equipment and the addition of iron tailings in the raw materials, which is helpful in reducing dosage of natural raw materials and chemical materials and nucleating agent is no longer in need. The auxiliary components such as Na2O and K2O contained in the iron tailings can reduce the glass melting temperature, which can greatly reduce production costs, meet the market demand of glass ceramics. Meanwhile, the new method can effectively improve environmental problems caused by tailings stacked and it conforms to the national environmental policy.

Description

technical field [0001] The invention belongs to the technical field of building decoration materials, and in particular relates to a diopside and feldspar main crystal phase glass-ceramics and a preparation method thereof. Background technique [0002] Glass-ceramics is a kind of polycrystalline solid material containing a large number of microcrystalline phases and glass phases, which is obtained by controlling the crystallization of the base glass with a specific composition during the heating process. Glass-ceramic exhibits excellent properties in terms of mechanical strength, hardness, thermal expansion, chemical stability, optical and electrical properties, and is therefore widely used in the fields of architectural decoration, machinery, optics, electronics, biomedicine, and chemical engineering. Among them, glass-ceramic for architectural decoration is used in the largest amount, and its economic benefits are remarkable. Its decorative effect and physical and chemical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/04C03C6/10C03B32/02
CPCC03C1/002C03C10/0009C03C10/0063
Inventor 杨眉肖莹周健
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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