A kind of Langhong ceramic glaze which can be in contact with food and preparation method thereof

A food contact and ceramic glaze technology, applied in the field of Langhong ceramic glaze and its preparation, can solve the problems of high firing difficulty, low yield, excessive migration of harmful elements, etc. Effect

Active Publication Date: 2022-04-29
中国轻工业陶瓷研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the problems of the existing Langhong ceramic glaze, such as high difficulty in firing, low yield rate, excessive migration of harmful elements that may occur in ceramic products, etc., and provide a food-compatible glaze with pure color development, stable performance, safety and environmental protection. Contacted Langhong ceramic glaze and preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A Langhong ceramic glaze that can be in contact with food is composed of a bottom glaze and a top glaze. Stone powder 6%, magnesite 7%, cold water stone 12%, zinc oxide 1%, titanium dioxide 13%;

[0033] The mass percentage of raw materials for the surface glaze: 14% quartz, 8% kaolin, 52% Chenwan glaze fruit, 6% Sanbaopeng porcelain stone powder, 5% burnt talc, 13.2% coral powder, 0.5% copper oxide, and 1.3% cassiterite powder.

[0034] The preparation method of the Langhong ceramic glaze that can be in contact with food is characterized in that it comprises the following steps:

[0035] Step 1: mix the bottom glaze raw materials and top glaze raw materials according to their respective raw material composition percentages, put them into a ball mill for wet ball milling, and sieve to obtain glaze slurry for bottom glaze and top glaze respectively;

[0036]Step 2: Apply 0.8mm bottom glaze on the ceramic green body by spraying glaze, dry at 100°C for 3 hours, and then a...

Embodiment 2

[0054] A Langhong ceramic glaze that can be in contact with food is composed of a bottom glaze and a top glaze. Stone powder 5%, magnesite 6%, cold water stone 11%, zinc oxide 1%, titanium dioxide 12%;

[0055] The mass percentage of raw materials for the surface glaze: 14% quartz, 8% kaolin, 52% Chenwan glaze fruit, 6% Sanbaopeng porcelain stone powder, 5% burnt talc, 13.2% coral powder, 0.5% copper oxide, and 1.3% cassiterite powder.

[0056] The preparation method of the Langhong ceramic glaze that can be in contact with food is characterized in that it comprises the following steps:

[0057] Step 1: mix the bottom glaze raw materials and top glaze raw materials according to their respective raw material composition percentages, put them into a ball mill for wet ball milling, and sieve to obtain glaze slurry for bottom glaze and top glaze respectively;

[0058] Step 2: Apply 0.8mm bottom glaze on the ceramic green body by spraying glaze, dry at 100°C for 3 hours, and then ...

Embodiment 3

[0076] A Langhong ceramic glaze that can be in contact with food is composed of a base glaze and a surface glaze. Stone powder 6%, magnesite 6%, cold water stone 12%, zinc oxide 2%, titanium dioxide 12%;

[0077] The mass percentage of raw materials for the surface glaze: 12% quartz, 6% kaolin, 55% Chenwan glaze fruit, 7% Sanbaopeng porcelain stone powder, 5% burnt talc, 13.6% coral powder, 0.3% copper oxide, and 1.1% cassiterite powder.

[0078] The preparation method of the Langhong ceramic glaze that can be in contact with food is characterized in that it comprises the following steps:

[0079] Step 1: mix the bottom glaze raw materials and top glaze raw materials according to their respective raw material composition percentages, put them into a ball mill for wet ball milling, and sieve to obtain glaze slurry for bottom glaze and top glaze respectively;

[0080] Step 2: apply 1mm of bottom glaze on the ceramic green body by spraying glaze, dry at 120°C for 4 hours, and th...

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Abstract

The invention discloses a Langhong ceramic glaze that can be in contact with food. It adopts natural minerals and chemical raw materials that are not harmful to the human body and the environment. Obtain the bottom glaze and top glaze; apply the bottom glaze on the ceramic green body first by spraying glaze, and then apply the top glaze by spraying glaze after drying; heat up the glazed ceramic green body in an oxidizing atmosphere and then strongly reduce it first The firing system of weak reduction is fired at 1330~1350°C, and a new type of Langhong ceramic glaze that can be in contact with food can be obtained. The invention realizes the preparation of the ceramic langhong ceramic glaze which does not contain poisonous elements to the human body, thereby solving the problem of the practical application of the ceramic langhong glaze in ceramic products which can be in contact with food. The preparation method of the invention is simple and easy, can meet environmental protection requirements, has low production cost, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of manufacturing traditional ceramic materials, in particular to Langhong ceramic glaze which can be in contact with food and a preparation method thereof. Background technique [0002] Langhong glaze, also known as "ox blood red", was first created in the Jingdezhen kiln in the early Qing Dynasty. It is the brightest color among the traditional precious copper red glazes in my country. From ancient times to the present, China has a tradition of using red as a noble, dignified and festive color. As a "treasure" in high-temperature color glazes, Langhong glaze is an excellent ceramic decorative material with good corrosion resistance and resistance to corrosion. The scouring of strong alkaline washing liquid has attracted more and more attention in recent years, and is widely used in the decoration of ordinary daily-use porcelain, especially personalized tableware and tea sets. [0003] Langhong glaze has be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C8/00C04B41/89C04B35/64C04B35/622
CPCC03C8/00C04B41/89C04B41/52C04B35/64C04B35/622C04B2235/658C04B2235/662C04B2235/963C04B41/5022C04B41/4539C04B41/4543C04B41/0072
Inventor 汪启轩陈冰金盈戴亚鹏李硕张侃敖敏黄慧超徐大余程睿肖剑翔
Owner 中国轻工业陶瓷研究所
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