Use of molybdenum
Pure molybdenum wire is used in high temperature electric furnace; molybdenum sheet is used to make radio equipment and X ray equipment; adding molybdenum to alloy steel can improve elastic limit, corrosion resistance and maintain permanent magnetism. Molybdenum is one of the seven micronutrients needed for plant growth and development, without which plants can not survive. Animals and fish, like plants, also need molybdenum.
The main area of molybdenum consumption is the iron and steel industry. More than 80% of molybdenum in industrialized countries is used as the addition element of iron and steel. Only about 20% of molybdenum is used to produce metal molybdenum, superalloys and special alloys, chemical products, etc. It is consumed in petrochemical, light industry, electronics and some high-tech fields.
Molybdenum and molybdenum alloy rods (strips), wires, plates, bands, foils and special-shaped products are commonly used in metallurgy, mechanical manufacturing, electronics, lighting and some high-tech fields. For example, support for lighting filament, core-axis wire, reflector screen; anode, gate, auxiliary electrode, gasket for electronics industry; container, boat dish, heater for vacuum plating and sputtering; heating element, electrode, heat insulation screen for high temperature furnace; surface treatment for surfacing welding, spray plating; thermocouple and protective cover for temperature measurement; burning boat for UO 2, etc. The application of molybdenum has been further expanded in the last 10 years, for example, the thermal jet plating of molybdenum powder or molybdenum wire has greatly improved the service life of piston rings and gear parts on the automobile; in the glass and refractory industry, molybdenum can be used instead of the previous one,platinum crucible and electrode, and achieved great results. the appearance of high temperature molybdenum makes the application of molybdenum in halogen mercury lamps and vacuum furnaces more and more extensive. In the die casting industry, molybdenum and its alloys can be used as die casting die materials for nonferrous and ferrous metals. Heat-resistant molybdenum-based ceramic pipe is suitable for continuous measurement of casing and hot extrusion die in oxygen top blowing converter during steelmaking process. Mo alloy head is widely used to wear seamless steel pipe and stainless steel pipe, which can significantly improve productivity and product quality and reduce cost. Alloys made of molybdenum and tungsten have excellent corrosion resistance (zinc liquid and zinc vapor). Mo-30W alloy has been widely used to make vertical shaft and temperature measuring casing, which greatly reduces stoppage maintenance and improves working conditions. The oxidation resistance of MoSi 2 is particularly good. It can be used as a heating element with a temperature of up to 1700℃ in the atmosphere. It can also be used as a crucible for rare earth smelting and some single crystal drawing instead of a valuable platinum crucible.
The application of molybdenum in chemical industry is also becoming more and more attractive, especially the rapid development of molybdenum compounds in chemical industry. In recent years, although molybdenum is in a depressed state, the application of molybdenum compounds is still growing and developing towards multipolarization. molybdenum and molybdenum alloys are highly stable in many reaction media. they are widely used in corrosion resistant materials in light industries such as chemical industry, petroleum refining and glass, such as chemical equipment linings, parts, valves, steam pipes, heat exchangers, reboiler, etc. At present, molybdenum and molybdenum alloys have been used for preparation, such as acid, alkali, salt, molten glass and some various equipment components that work in gas media. such as large valves, heat exchangers in hot concentrated sulfuric acid systems. Ferro-molybdenum and molybdenum alloys are also said to be available in equipment for chlorination at 320℃ and higher pressure conditions. applications of molybdenum compounds include the following: catalysts and catalytic activators, lubricants and their lubricating additives, pigments, dyes, paints and inks, water quality and dielectric ring etchants, composite ion exchangers, batteries, flame retardants, smoke suppressants and aspirants, trace element additives, molybdenum compound fertilizers, superconducting materials, ceramic materials, polymer filler, energy storage materials, gasoline additives, glass materials, etc. Some predict that in the next 10 years, the development of new applications of molybdenum may be mainly manifested in fine chemical industry, which is likely to make a breakthrough increase in the consumption of molybdenum.
the application of molybdenum in chemical industry is also becoming more and more attractive, especially the rapid development of molybdenum compounds in chemical industry. In recent years, although molybdenum is in a depressed state, the application of molybdenum compounds is still growing and developing towards multipolarization. Molybdenum and Molybdenum Alloys in Many Anti-element Supporting Data a natural molybdenum pyroxene MoS is a soft black mineral with similar appearance and graphite. Before the end of the 18th century, both were sold under molybadenite name in the European market. By 1779, Schiller pointed out that graphite and molybadenite were two completely different substances. He found that nitric acid had no effect on graphite, but reacted with molybadenite to obtain a chalky white powder, boil it together with the alkali solution, and crystallize and precipitate a salt. He thinks the white powder is a metal oxide, mixed with charcoal after strong heat, did not obtain metal, but after co-heating with sulfur to get the original molybadenite.. The metal was separated from the molybadenite in 1782 by the owner of a Swedish mine Mo. named the symbol of the element We translate into molybdenum. it was recognized by bezirius et al.
