White PTFE split wire packing
White PTFE split wire packing, also known as strong corrosive medium valve packing: woven from sintered and fully stretched multi-strand PTFE wire, completely impregnated in PTFE, again in the weaving process Impregnation.
White split wire packing:
Has good resistance to compression, anti-extrusion and high structural strength and density.
Equipment: Suitable for high pressure valves, plunger pumps, mixers, mixers, etc.
Industry: food industry, medicine, paper, chemical fiber, etc.
Working pressure: 20
Shaft speed: M/s 10 6
Temperature: -150~+260
PH value: 0-14.
Hebei Innovation Sealing Material Co., Ltd.
Mobile phone
phone
Contact: Business Manager
15-25mm Calcium Carbide: Physical and chemical properties: ores are solid brown or black block, pure white crystals (including CaC2 higher purple). Density of 2.22 g / cubic centimeter, the melting point of 2300 ° C (with CaC2 content), water immediately intense reaction to generate acetylene, and release heat, Calcium Carbide content varies with the melting point also will change.
Impurities: Caustic soda often contain calcium arsenide (Ca3As2), calcium phosphide (Ca3P2) and other impurities, and the role of water at the same time release arsine (AsH3), phosphine (PH3) and other toxic gases, so the use of Acetylene generated by calcium carbide is toxic.
Crystal structure
The most common crystal form of CaC2 is tetragonal, stable between 298K and 720K. Quartet CaC2 similar to the crystal structure of NaCl, but due to [: C≡C:] 2- ion oval, oriented, the crystal is tetragonal. In CaC2 crystal, the C-C distance is 120pm, which corresponds to the bond length of carbon-carbon triple bond, the distance between Ca and C is 259 and 282pm.
15-25Mm Calcium Carbide,Acetylene Plant Calcium Carbide,Industrial Calcium Carbide,Steel Calcium Carbide
Ningxia Tongji International Trade Co.,Ltd. , http://www.tongjiinternational.com