Method for formulating moderate temperature bright red glaze

Abstract

The invention relates to a method for preparing medium-temperature bright red glaze, which belongs to the technical field of ceramic glazes. The glaze contains 15-25% of potassium feldspar; 10-20% of quartz; 5-10% of calcite; 0.5-2.5% of calcined zinc oxide; 0.5-5% of Longyan washing mud; 3-5% of transparent frit; Barium 1-5%; water 40-42%; bright red material 5-10%; mix and grind the components according to the above weight percentage for 21 hours, and the fineness can reach 325 mesh; then add water, large Mix the red ingredients well. The preparation method of the present invention enables the base glaze to be matched with the ceramic base to be fired at a medium temperature of 1220°C to 1240°C, so that the color is uniform, pure, bright and bright, and the dissolution rate of lead and cadmium is lower than 1 / 30 of the national standard. .

Description

technical field [0001] The invention relates to a preparation method of medium-temperature ceramic scarlet glaze, in particular to a preparation method of medium-temperature scarlet glaze. Background technique [0002] With the improvement of people's quality of life and the change of consumption concept, daily-use ceramic products are required to be practical, artistic and ornamental. In order to improve the practicability, artistry and appreciation of daily-use porcelain, it is often necessary to adopt a variety of surface decoration methods, such as the use of bright red to express a cheerful and festive atmosphere. Most of the peers in the ceramic industry use copper oxide as the main coloring material for making red glazes, and let it be obtained in a reduction firing environment; but because the reduction firing environment is difficult to control, the coloring effect is extremely unstable, so Dahong glaze is a kind of glaze color that is extremely difficult to develo...

AI Technical Summary

Problems solved by technology

The unavoidable problem is that the lead emission is relatively large, so it is difficult to get involved in tableware or children's products

[0003] Because of this, although the ceramic circles around the world have invested a lot of manpower and material resources, they still haven't been able to burn bright red ceramic glazes with uniform and pure color, and the amount of toxic substances dissolved and discharged has been reduced to the minimum limit of the national environmental protection requirements.