Acetylene (C2H2) is the world's most efficient and hottest burning standard welding gas. For producing acetylene, the reaction of calcium carbide (CaC2) with water (H2O) is used, whereas acetylene and lime milk (Ca(OH)2) is generated.
CaC2 + 2 H2O --> C2H2 + Ca(OH)2
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For this simple and proven process, AlzChem's calcium carbide is used for more than a century. Calcium carbide is of strategic value for AlzChem, as it is the basis of the NCN-chain. Originating from calcium carbide, AlzChem produces a variety of products from fertilizer to specialty chemical at five production sites.
In order to ensure the availability of calcium carbide at any time, AlzChem produces it with three electric arc furnaces at two sites. With this redundant production of calcium carbide, we can guarantee our customers the highest level of supply security and reliability.
Leading producers of technical gases rely on the holistic offer of AlzChem. Besides high and stable product quality, AlzChem organizes logistics with their own carbide containers and rail wagons and offers qualified support for technical questions.
Graphite is pure carbon (chemical formula C) that cristallyzes in the hexagonal system. Color: black.
Carbides are the combination of carbon with another element, with no presence of oxygen. In the presence of oxygen the substance would be a carbonate instead of a carbide.
Example of carbides:
Calcium carbide (chemical formula Ca2C), used to make acetylene in small workshops.
Silicon carbide (chemical formula SiC), whose commercial registered trademark is Carborundum, used in grinding disks and wheels. Carborundum was a trade brand that belonged to The Carborundum Company, which has been purchased by Saint Gobain (I believe).
Tungsten carbide (chemical formula TgC), used in cutting and drilling tools.
Cr7C3 is chromium carbide, the one that appears when stainless steel passes through the sensitizing temperature, originating intergranular corrosion.
High speed steel is a high carbon steel, with a carbon content of 1 - 1,2%. Extremely hard but fragile, that's why it breaks easily when used in machining tools, which makes machinists to get upset.
There's no element whose formula is M, as you indicate. Check whether it's not Mo (molybdenum) or Mn (manganese)
Giovanni S. Crisi
Sao Paulo - Brazil
Contact us to discuss your requirements of calcium carbide for metallurgy. Our experienced sales team can help you identify the options that best suit your needs.