There are many types of crystal glazes and there are many classification methods.
According to the crystal form, it can be divided into crystals, raindrops, tea leaves, rust flowers, chrysanthemums, radial, strips, splashes, star shapes, pine needles, spirals, flashing stars, granules, horns, feathers, etc. glaze.
According to product classification, it can be divided into ceramic crystal glaze, architectural ceramic crystal glaze and daily ceramic glaze.
According to the glaze processing method, it can be divided into raw material crystal glaze and frit crystal glaze.
According to the firing temperature, it can be divided into high temperature, medium temperature and low temperature crystal glaze.
According to the crystal size, it can be divided into two categories: coarse crystal glaze and microcrystalline glaze. The coarse crystalline glaze can be seen by the naked eye. The large diameter can reach 12cm, the surface is covered by many crystals which are completely or partially developed, or crystallized in the lower part of the glaze surface, and enclosed in the vitreous matrix. This kind of glaze is the so-called typical crystal glaze, and the zinc silicate crystal glaze belongs to this type, and the Venus glaze is also of this type. The crystallized glaze crystals are very small, just like the sky stars, and some can't be seen without the microscope. The crystal form is basically a needle shape, a plate shape or a minute spherical shape.
Crystal glazes are colorful, beautiful and novel. According to the color of crystal glaze, they are divided into white, black, yellow, blue, discolored and other crystal glazes.
However, the most commonly used classification methods are classified according to the selected crystallizing agent, and can be classified into iron-based crystal glaze, zinc silicate crystal glaze, silicic acid crystal glaze, silicon-zinc crystal glaze, manganese crystal glaze, and gilt glaze. However, the most used one is the zinc-zinc ore 2ZnO·SiO2 system.
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