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Jade-type glass-ceramic and preparation method thereof

A glass-ceramic and jade technology, applied in the field of glass ceramics, can solve the problems of difficulty in hanging and punching, no jade texture, easy edge collapse, etc., and achieve the effect of excellent machinability and fine texture.

Inactive Publication Date: 2010-08-18
香港福山实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this kind of glass-ceramics are: (1) the grain size of the wollastonite phase in the material is relatively large, and there is no jade texture; There is some difficulty when hanging the punch
In addition, there are some milky white or black glasses produced by calendering and floatation. They belong to the category of opalescent glass, in which the proportion of crystal phase is small, and there are many glass phases. Chipping, cracking, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The main crystal phase is lancetite and chrysanthemum feldspar (calcium feldspar and feldspar), and the secondary crystal phase is wollastonite for the preparation of jade-type glass-ceramic, the specific steps are as follows:

[0035] 1. Design its basic chemical composition

[0036] SiO 2 : 55.0%, Al 2 o 3 : 4.5%, MgO: 8.0%, CaO: 12.0%, (K 2 O+Na 2 O): 11.5%, F: 4.5%, and the rest are fluxes and clarifiers.

[0037] 2. Material selection

[0038] To select raw materials containing the above chemical components, you can choose mineral raw materials, or any one or more of slag, fly ash, coal gangue, phosphorus slag, boron mud, and determine the selected minerals or slag, pulverized coal The content of the designed chemical components contained in the ash.

[0039] 3. Ingredients

[0040] According to the designed chemical composition, accurately calculate the amount of the selected raw materials, weigh them out, crush them and mix them evenly.

[0041] 4. Melti...

Embodiment 2

[0050] The main crystal phase is β-quartz, and the secondary crystal phase is the preparation of spodumene glass-ceramics. The specific steps are as follows:

[0051] 1. Design its basic chemical composition

[0052] SiO 2 : 62.5%, Al 2 o 3 : 20.0%, MgO: 1.5%, LiO: 4.0%, TiO 2 : 2.0%, ZrO 2 : 1.0%, ZnO: 2.0%, F: 1.5%. The rest are fluxes and clarifiers.

[0053] 2. Material selection

[0054] Choose raw materials suitable for this chemical composition range, such as quartz sand, kaolin, spodumene, lithium carbonate, titanium dioxide, zircon sand, magnesite, etc.

[0055] 3. Ingredients

[0056] According to the designed chemical composition, the dosage of the selected raw materials is accurately calculated, crushed and mixed evenly.

[0057] 4. Melting

[0058] The mixed raw materials are added to the melting furnace in batches and melted at 1580°C for 4.0 hours, so that a large amount of unmelted nano-scale particles and holes remain in the molten glass. After melt...

Embodiment 3

[0066] The main crystalline phase is diopside and calciferite, and the secondary crystalline phase is wollastonite glass-ceramics. The specific steps are as follows:

[0067] 1. Design its basic chemical composition

[0068] SiO 2 : 45.0%, Al 2 o 3 : 15.0%, (Na 2 O+K 2 O): 15.0%, MgO: 10.0%, CaO: 8.0%, and the rest are flux and colorant.

[0069] 2. Material selection

[0070] Select appropriate raw materials within this chemical composition range, such as: feldspar, kaolin, magnesite, boron mud, etc.

[0071] 3. Ingredients

[0072] According to the designed chemical composition ratio, the amount of the selected raw materials is accurately calculated, and the crushed stone is mixed evenly.

[0073] 4. Melting

[0074] Add the mixed raw materials into the melting furnace in batches and melt at 1540°C for 2.0h, control the degree of melting so that the molten glass contains a large number of nano-scale melt points and holes, and then clarify at 1380°C for 1.0h.

[007...

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Abstract

The invention relates to a jade-type glass-ceramic and a preparation method thereof. The jade-type glass-ceramic contains a main crystal phase and can also contain a secondary crystal phase, wherein the maximum crystallite dimension of the secondary crystal phase is equal to or smaller than visible wavelength, the jade-type glass-ceramic contains the following components in percentage by weight: 45.0-75.0% of SiO2, 1.0-25.0% of Al2O3, 0-20.0% of alkaline earth metal oxide, 3.0-15.0% of alkali metal oxide, 0-4.0% of TiO2, 0-2.5% of ZrO2, 0-8.0% of F and the balance of flux and clarifier. The preparation method of the jade-type glass-ceramic comprises the steps that the main raw materials and the auxiliary materials are mixed uniformly and then are melted at high temperature to form molten glass, then the molten glass is thermally treated after being cooled and molded so as to form an organization structure beneficial to the penetration of the visible light part in molten glass, and after thermal treatment, the glass-ceramic is in a semitransparent neftdegil shape and becomes a jade-type glass-ceramic. The jade-type glass-ceramic has delicate texture, is translucent, can be widely used as a decorative plate, and can also be carved into handicrafts and prepared into tableware and sanitary ware.

Description

technical field [0001] The invention relates to a glass-ceramic and a preparation method thereof, in particular to a jade-type glass-ceramic and a preparation method thereof, belonging to the technical field of glass ceramics. Background technique [0002] At present, glass-ceramics used as decorative materials are mostly produced by bead sintering method, and its crystal structure is mainly wollastonite phase. The disadvantages of this kind of glass-ceramics are: (1) the grain size of the wollastonite phase in the material is relatively large, and there is no jade texture; There are certain difficulties when hanging the punch. In addition, there are some milky white or black glasses produced by calendering and floatation. They belong to the category of opalescent glass, in which the proportion of crystal phase is small, and there are many glass phases. There are phenomena such as chipping and chipping. Contents of the invention [0003] In view of the above-mentioned p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/04C03C10/12C03C10/14C03C10/16
Inventor 梁开明曹建尉梁华巍梁力
Owner 香港福山实业有限公司
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