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Method for preparing red microcrystalline glass by using ceramic pigment

A technology for ceramic pigments and glass-ceramics, applied in glass forming, glass manufacturing equipment, manufacturing tools, etc., can solve the problems of inconsistent color of glass-ceramics, unsightly spots, prolonged production cycle, etc., to enhance decorative effect, preparation Simple process, uniform surface color effect

Pending Publication Date: 2021-02-19
江西璞晶新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In fact, the one-time coloring process of glass-ceramics is basically the same as that of traditional flat glass and daily-use glass. The coloring is uniform, and the glass-ceramic produced has no color difference. In addition, this method is suitable for mass production of small varieties. However, frequent refueling is required to produce products of different colors, which will increase production costs, and the longer refueling time will prolong production. At the same time, different transition materials need to be stored separately, which will increase the floor space of the storage materials. If not stored properly, other impurities may be introduced. In addition, when using variable-valence metal ions as colorants, due to the different valence ions The relative content is difficult to control, which may cause the color of the glass-ceramics to be inconsistent before and after sintering
[0007] The secondary coloring process is to prepare colorless microcrystalline particles and toner respectively, and then mix colorless glass-ceramic granules and toner in a certain proportion to make a batch, and then spread the material according to the designed thickness and form it. The kiln car is pushed into the tunnel kiln for heat treatment, and the glass-ceramic wool board exiting the kiln is cold-processed to obtain a colored glass-ceramic decorative board. The glass-ceramic is prepared by the secondary coloring process, which is suitable for small-batch and diversified production , which can solve the problem of color difference caused by the change of valence state of variable valence metal ions due to melting. In addition, this method only needs to produce white glass pellets without excessive intermediate materials, which solves the problem of insufficient warehouse capacity, and the production process There is no need for frequent refueling, which reduces production costs. However, this method needs to add a set of equipment for preparing colored glaze and a set of mixing equipment, and the process is relatively complicated. In addition, if the quality of the colored glaze is not prepared, it will cause Non-uniform coloring of glass-ceramic plates after sintering, resulting in unsightly spots
[0008] At present, selenium powder and cadmium yellow are usually used as colorants to prepare red glass-ceramic, which has poor reproducibility of color development and severe volatilization loss in the glass melting process. In addition, the requirements for the crystallization process are extremely strict. There are many pores on the surface of red glass-ceramics, which limit the production and application of red glass-ceramics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041]The steps are as follows:

[0042]S1: According to the designed mass fraction, put 63% SiO2, 17% CaO, 7% Al2O3, 1.5% MgO, 4.5% Na2O, 1.5% K2O, 4.5% BaO into the ball mill and stir for 7 minutes;

[0043]S2: Add the uniformly mixed batch materials in S1 to a furnace that has been heated to 1500 degrees Celsius, and melt them at 1500 degrees Celsius for 15 hours to obtain molten glass;

[0044]S3: By controlling the height of the screed barrel, the glass liquid passes through the forehearth and flows into the pool below the trough;

[0045]S4: Take out the glass pellets in the water tank and air-dry to obtain white microcrystalline pellets. Then the pellets were ball milled for 2.5 hours and sieved to obtain white microcrystalline powder with a 200-mesh sieve residue of 5%.

[0046]S5: Put 77% white microcrystalline powder, 8% China red, 0.2% zirconium iron red, 9.8% shale powder and 5% high-temperature calcined kaolin according to mass fraction into a ball mill tank, and stir for 10 minutes.

[...

Embodiment 2

[0051]Its characteristics are as follows:

[0052]S1: According to the designed mass fraction, put 63% SiO2, 17% CaO, 7% Al2O3, 1.5% MgO, 4.5% Na2O, 1.5% K2O, 4.5% BaO into the ball mill and stir for 7 minutes;

[0053]S2: Add the uniformly mixed batch materials in S1 to a furnace that has been heated to 1500 degrees Celsius, and melt them at 1500 degrees Celsius for 15 hours to obtain molten glass;

[0054]S3: By controlling the height of the screed barrel, the glass liquid passes through the forehearth and flows into the pool below the trough;

[0055]S4: Take out the glass pellets in the water tank and air-dry to obtain white microcrystalline pellets. Then the pellets were ball milled for 2.5 hours and sieved to obtain white microcrystalline powder with a 200-mesh sieve residue of 5%.

[0056]S5: Put 78% white microcrystalline powder, 7% Chinese red, 0.5% orange red, 9.5% shale powder and 5% high-temperature calcined kaolin in a ball milling tank according to mass fraction, and stir for 10 minu...

Embodiment 3

[0061]The steps are as follows:

[0062]S1: According to the designed mass fraction, put 63% SiO2, 17% CaO, 7% Al2O3, 1.5% MgO, 4.5% Na2O, 1.5% K2O, 4.5% BaO into the ball mill and stir for 7 minutes;

[0063]S2: Add the uniformly mixed batch materials in S1 to a furnace that has been heated to 1500 degrees Celsius, and melt them at 1500 degrees Celsius for 15 hours to obtain molten glass;

[0064]S3: By controlling the height of the screed barrel, the glass liquid passes through the forehearth and flows into the pool below the trough;

[0065]S4: Take out the glass pellets in the water tank and air-dry to obtain white microcrystalline pellets. Then the pellets were ball milled for 2.5 hours and sieved to obtain white microcrystalline powder with a 200-mesh sieve residue of 5%.

[0066]S5: Put 67% white microcrystalline powder, 8% Chinese red, 0.2% parcel red, 14.8% shale powder and 10% high-temperature calcined kaolin in a ball milling tank according to mass fraction, and stir for 10 minutes.

[006...

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Abstract

The invention discloses a method for preparing red microcrystalline glass from a ceramic pigment, and relates to the field of microcrystalline glass preparation. The method comprises the following steps: S1, putting 61-64% of SiO2, 15-18% of CaO, 6-8% of Al2O3, 1-3% of MgO, 2-6% of Na2O and 1-3% of K2O into a ball mill according to the designed mass fraction, and conducting stirring for 5-10min; S2, adding the uniformly mixed batch in the step S1 into a smelting furnace which is heated to 1400-1500 DEG C, and conducting smelting for 10-20 hours at 1400-1500 DEG C to obtain molten glass; S3, bycontrolling the height of a homogenizing barrel, enabling the molten glass to flow into a water tank below a trough through a material channel; and S4, taking out glass granules in the water tank, carrying out air drying to obtain white micro-grain materials, and carrying out ball milling on the granules for 2 hours to 3 hours. The method is simple in preparation process, convenient to operate, low in energy consumption, low in production cost and suitable for mass production, the glass ceramics prepared according to the method are small in porosity, uniform in surface color and luster and attractive, the decorative effect of the glass ceramics decorative plate is enhanced, and the additional value of the product is increased.

Description

Technical field[0001]The invention relates to the field of manufacturing glass-ceramics, in particular to a method for preparing red glass-ceramics by using ceramic pigments.Background technique[0002]Glass-ceramics are made by adding a nucleating agent or by surface induction. During the heat treatment, the glass nucleates, and then the nucleus grows to form a polycrystalline inorganic material in which crystals and glass coexist. Among them, the sintering method is prepared The CaO-Al2O3-SiO2 system glass-ceramic belongs to the wollastonite system glass-ceramics, and the main crystal phase is β-wollastonite. The system glass-ceramics are prepared by the method of surface crystallization without adding crystal nucleating agent. It is easy to nucleate at the boundary, and a large number of crystal interfaces can be formed after crystallization, so the glass-ceramic prepared by this method is rich in three-dimensional and layered, and has a pattern similar to natural stone, good textu...

Claims

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Application Information

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IPC IPC(8): C03C4/02C03C10/06C03B19/10
CPCC03C4/02C03C10/0036C03B19/1045
Inventor 张韶栋罗芳黄碧君曾庆筠邓释禅陈怀冰
Owner 江西璞晶新材料股份有限公司