How to choose glazed tiles in Foshan, Guangdong?

1, glazed with traditional glazed tiles.

Lead-free glaze used in traditional glazed tiles takes lead as flux, and the main colorants are metal oxides such as iron, copper, manganese and cobalt, which belong to PBO-SiO _ 2 binary system, and the firing temperature is about 850℃- 1000℃. The content of colorant in raw lead glaze directly affects the change of glaze color depth, and rich colors can be obtained

glazed tile

2. Glaze for Western glazed tiles

The glaze of western-style glazed tile is frit glaze, which has a wide firing temperature range and can be selected from colored glaze. Chemical raw materials (borax, alkaline noodles, lead, etc. ) should be industrial pure, and the purity of colorant should be high. The quality of frit directly affects the quality of glaze, so we should pay attention to all aspects of firing to improve the quality of frit. A good frit should be transparent glass.

A) preparation of glaze

Weigh lead or frits and raw materials strictly according to the formula, and put them into a ball mill for grinding. The ratio of ball to water is 1: 1.7:0.8, and the required fineness is: raw lead glaze 0.04-0.06%, frit glaze 0.05-0. 12% (sieve residue). In order to ensure the glaze has good fluidity and prevent precipitation, electrolyte methyl cellulose can be added.

B) glass

Glazed tiles and western-style tiles are generally glazed or dipped in glaze. Glaze should be applied quickly, and the glazed surface can be smooth and uniform after one-time pouring. The specific gravity of glaze shall be controlled between 1.5- 1.7. Pay attention to scraping the bottom in time after glazing.