Manufacturer of ceramics used zirconia/ceramic glaze to add zirconia/ceramic glaze zirconia wholesale
First, the introduction of zircon sand:
Zircon chemical formula: ZrSiO4, also known as zircon, zircon sand. It is a mineral consisting mainly of zirconium, silicon, and oxygen that is crystallized from the magma at the time of the formation of igneous rocks. Zircon sand is the most important zirconium mineral. It is the most widely distributed mineral in zirconium minerals, with the largest reserves and the largest type. It is a mineral composed mainly of zirconium silicate. With Jin Hongshi, ilmenite, monazite and xenotime in beach sand, and the water, electricity, magnetic separation and other beneficiation process. Zircon crystallizes in the tetragonal cone development are usually small square column is good, irregular granular. It is brittle and seashell. It is a high quality refractory. The theoretical composition of zircon sand is: ZrO2:67.1%; SiO2:32.9%. Zircon sand is pure colorless and transparent crystal, often because of quantity and species of different origin and different impurities dyed yellow, orange, red and brown color, Mo type hardness of 7.8, the proportion of the refractive index of 1.93-2.01, 4.6-4.71g/cm fand, melting point of 2550 DEG C or above.
Two. Classification of zircon sand:
Zircon sand (Gao Yingshi) silicate minerals, their physical properties and chemical composition can be divided into high and low type zircon type two. The crystallized crystal is mostly "high type", and the crystal extremely poor or amorphous is "low type". There are also three types of high, medium and low.
Three. Technical parameters of zircon sand:
Part of the standard zirconium sand accurate specification(YB834-87)
25kg/bag ,Moisture-proof woven bag
Four. The characteristics of zircon sand:
Zircon sand (Gao Yingshi) has the characteristics of high temperature resistance, high melting point, low thermal conductivity, low coefficient of linear expansion, acid corrosion resistance and stable chemical properties.
Five, the use of zircon sand:
Zircon sand used for refractory material (zirconium refractory material, such as corundum brick, zirconium refractory fiber), sand mold casting industry (precision casting sand), precision enamelware, also used in glass, metal (sponge zirconium and zirconium compounds (two) zirconium oxide, zirconium oxychloride, zirconate sodium, potassium zirconium fluoride, etc.) in the production of zirconium sulfate. A small amount of zircon sand is used for iron alloy, medicine, paint, leather, abrasive, chemical and nuclear industry. A very small amount of metal is used to smelt zirconium.
1. The mold coating and the ceramic core used in the mold casting industry. Zircon sand can be used as a quality raw sand for casting, and zircon sand powder is the main component of casting paint. ZrO265 ~ 66% zircon sand because of its resistance to melt (above the melting point of 2550 DEG C) and directly used as casting mould material iron metal factory. Zircon sand has a thermal conductivity, low thermal expansion and high, but compared with other common refractory materials with high chemical stability, so the quality of zircon and other various adhesives with good adhesion and used in foundry industry. Zircon sand has a strong effect on chilled casting, can make metal structure refinement, so as to further improve the mechanical performance, has good auxiliary function for mechanical production, in the production of castings, adding zircon sand has a good effect on improving the rate of qualified castings.
2, zircon sand in ceramic industry as main material, also used for glazing, zirconium silicate with high refractive index, stable chemical performance, is opalizer a high-quality, inexpensive, widely used in a variety of architectural ceramics, sanitary ceramics, daily-use ceramics, a ceramic crafts such as production, processing the production of ceramic glaze, the use of a wide range of applications, a large amount of. Zirconium silicate is widely used in ceramic production. Because of its good chemical stability, zirconium silicate is not affected by ceramic firing atmosphere, and it can significantly improve the glaze bonding performance of ceramic and improve the hardness of ceramic glaze. High quality zircon sand is used as opaque agent in ceramic tile making process, making ceramic ware increase wear resistance and surface finish, easy to clean and decontamination, and avoid erosion.
3. Zircon sand is a high quality industrial additive. The output of computers and TV sets is increasing rapidly, and the glass panel with zircon sand is used as an additive to improve its refractive index. Zirconium silicate has also been further applied in the production of emulsion glass production in the television industry and in the color picture tube and glass industry.
4. Zircon sand is the main raw material for the preparation of zirconium ZrO2, hafnium and a variety of zirconium products. Zircon sand is also used in glass furnace zircon brick, ladle zircon brick, ramming material, coating, casting material.
5, zircon sand has a special use in many chemical industries, including cosmetics, cement, food corrosion, leather, fiber (used in the manufacture of flame retardant fiber).
6, zircon sand and zircon powder are mixed with other refractory materials for other purposes. Zircon sand added to other materials can improve its properties. For example, adding zircon sand into cordierite can broaden the sintering range of cordierite without affecting its thermal shock stability. With the addition of zircon sand in the high alumina brick, the anti peeling and high alumina brick is made, and the thermal shock stability is greatly improved.