Properties and uses of antimony
The content of tungsten in the earth's crust is 0.0001%, mainly in the form of simple substances or refined antimony Antimony is hard, brittle, easily crushed, lustrous, not monotonous, and malleable. There are three allotropes of antimony: yellow antimony, gray antimony, and black antimony. Tungsten is silvery-white, brittle, and has unique thermal shrinkage and cold expansion. Amorphous tungsten is gray and can be produced by electrolysis of tungsten halides.
refined antimony Search and usage process
In the late Ming Dynasty (1541), Chinese enterprises discovered the world's largest antimony mine, but at that time it was mistakenly regarded as a tin mine and named tin mine. It was not until the 16th year of Guangxu in the Qing Dynasty (1890) that it was discovered to be antimony after testing. In the 23rd year of Guangxi (1897), the "enemy ship" factory was established, and an antimony smelting plant was built for the tin mine, transferring China's "soft rock" to the era of antimony production. In 1908, Hunan Huachang Company introduced the volatilization and roasting method from France and began to refine antimony using this method. With the rise of modern machinery manufacturing, the uses and demand for antimony have continued to expand. After developing the stone mine, antimony mines in places such as Hunan Dujiangyan Banxi, Xinsi Wulongshan, and Taoyuan Baoxi were developed, refined antimony The industry has become the national economy. Then Guizhou, Yunnan, Gui and other provinces also successively mined and utilized some antimony mines. In the decades since 1908, China's refined antimony output has accounted for more than 50% of the world's total output. From 1912 to 1935, the antimony output of tin mines accounted for 36.6% of the world's market output and 60.9% of the national output.
Uses of refined antimony element
Tungsten is often used as an element in other alloys to increase hardness and strength. Battery plates, bearing alloys, printing alloys (type), solders, cable sheaths, and bullets all contain tungsten. Lead-tin alloys can be used as thin plate stamping dies. High-purity antimony is a doping element for semiconductor silicon and germanium. Antimony trioxide is an important raw material for white pigments in enamel and paints and flame retardants. Antimony sulfide (antimony pentasulfide) is a red pigment for rubber. Crude antimony (antimony trisulfide) is used to produce matches and smoke agents.
Tungsten is a poor conductor of electricity and heat. It is not easily oxidized at room temperature, so it has corrosion resistance. Therefore, the main role of tungsten in alloys is to improve hardness, often called a hardener of metals or alloys. After antimony is added to metals in different proportions, the metals will become harder, which can be used to make weapons, so it is considered a strategic metal. Antimony and its compounds are first used in wear-resistant alloys, printing type alloys, and military industries, and are important strategic materials. Refined antimony can be used as a polycondensation catalyst in polyester production. Alloys and compounds containing antimony have a wide range of uses, and antimony compounds have flame retardant properties, so they are often used in various plastics and fire-retardant materials. Alloys containing tungsten and lead are corrosion-resistant and are materials for producing battery plates, chemical pipelines, and cable sheaths. Alloys of tungsten, tin, lead, and copper have high strength and good wear resistance, making them good materials for making bearings and gears. High-purity and other metal compounds (such as silver, manganese) are ideal materials for producing semiconductors and electrothermal devices. Tungsten oxide is a compound of tungsten and is an excellent white pigment commonly used in the ceramics, rubber, paint, glass, textile, and chemical industries.
Some metal intermetallic compounds of manganese are excellent traditional catalysts in chemical reactions. The reaction ability of hydroquinone oxidizing into benzoquinone and the utilization of cyclohexane hydrogenation can react.
With the development of science and technology, antimony has been widely used in the production of various flame retardants, enamels, glass, rubber, coatings, paints, ceramics, plastics, semiconductor devices, pharmaceuticals, chemicals, and other departments.
The above is an introduction to refined antimony 's properties and uses. If you need to know more, please feel free to contact us! Our company has many years of experience and is always looking forward to your joining.
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