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Mosten Alloy Co., Ltd.

Deep processing of molybdenum

  • Mosten
  • 6 Sept

Molybdenum is an insoluble rare non-ferrous metal. Molybdenum deposits on the Earth are small, accounting for only 0.001% of the weight of the earth's crust. The total reserves of molybdenum are about 15 million tons, mainly distributed in the United States, China, Chile, Russia, Canada and other countries.

The consumption form of molybdenum is mainly industrial molybdenum trioxide, accounting for about 70%, ferromolybdenum 20%, molybdenum metal and molybdenum chemicals 5% each. Its application field and allocation proportion is as follows: about steel consumption accounted for about 80% (about 43% of alloy steel, stainless steel is about 23%, tool steel and high speed steel by about 8%, cast iron and roll about 6%), chemical products accounted for about 10%, metal molybdenum products consumption accounts for about 6%, high temperature and high strength alloys and special alloys accounts for about 3%, other molybdenum products is about 1%. It can be seen from above that the development of iron and steel industry plays a decisive role in molybdenum consumption. Molybdenum is mainly used in iron and steel industry, the additives used for the production of various kinds of alloy steel, and can and zirconium, nickel, cobalt, tungsten, titanium, vanadium, titanium, rhenium, etc advanced alloys, can improve the high temperature strength, wear resistance and corrosion resistance, most of them are industrial molybdenum oxide after the briquetting directly for steel or cast iron, again after a small number of melting into molybdenum iron for steelmaking. The molybdenum content in low alloy steel is less than 1%, but this aspect accounts for about 50% of total molybdenum consumption. The corrosion resistance of stainless steel can be improved by adding molybdenum. The strength and wear resistance of iron can be improved by adding molybdenum into cast iron. Nickel-based superalloy containing 18% mo has the characteristics of high melting point, low density and low thermal expansion coefficient, and is used in the manufacture of various high temperature components in aviation and aerospace. Molybdenum metal is widely used in electronic devices such as electron tubes, transistors and rectifiers. Molybdenum oxide and molybdate are excellent catalysts in chemical and petroleum industries. Molybdenum disulfide is an important lubricant used in the aerospace and mechanical industries. Alloy steel of molybdenum and tungsten, chromium and vanadium is suitable for manufacturing high speed cutting tools, decks of warships, tanks, guns, rockets, satellites and other alloy components and parts. Molybdenum is widely used as heating material and structure material of high temperature electric furnace, large electrode and gate of vacuum tube, semiconductor and electric light source material. Because of its small thermal neutron floating cross section and high lasting strength, molybdenum can also be used as structure material of nuclear reactor. Molybdenum compounds are also widely used in pigments, dyes, coatings, ceramic glass, agricultural fertilizers, etc. With the development of science and technology, the application of molybdenum in high-tech and other fields will continue to expand and develop.

Molybdenum: it is a rare metal with non-renewable and limited resources. Element symbol Mo, atomic weight 95.95 g/g atom. Crystal structure, body-centered cubic structure, lattice constant, α=3.1468. Melting point: 26100C, density; 10.22 g/cm3. Thermal conductivity: 142W/ M.K (200C) Molybdenum has many excellent physical and chemical properties and mechanical properties, at room temperature and high temperature have high strength, high conductivity, good thermal conductivity, at room temperature does not react with hydrochloric acid, hydrogen acid and alkali solution, only dissolved in nitric acid, aqua regia or concentrated sulfuric acid. For most of the fluorine number liquid metals, non-metallic slag and molten glass are also quite stable. Therefore, molybdenum and its alloys have a wide range of applications and good prospects in metallurgy, agriculture, electrical, chemical, environmental protection, aerospace and other important sectors, and become an important raw material and irreplaceable strategic material in the national economy.

Molybdenum is a non-renewable rare metal with limited resources. Because of its high temperature resistance, wear resistance and high hardness, molybdenum has good toughness and ductility, which makes it widely used in aerospace, military industry, metallurgy, glass fiber, electronics, automobile, chemical industry and many other fields. With the rapid development of China's economy, especially the rise of high-tech industry, the demand for molybdenum deep processing products is increasing. According to the statistics of relevant departments, from 2000 to 2004, the demand for molybdenum in China increases by 10% every year. According to the structure analysis of molybdenum demand, Special steel accounts for 80% (low alloy steel 30%, stainless steel 30%, tool steel and high-speed tool steel 10%, cast steel and roll 10%), molybdenum chemical products 10%, molybdenum metal products 10%. Take stainless steel as an example: since the 1990s, China's stainless steel consumption per year to 26.9% rapid growth, 2000~2003, the growth rate reached 30.7%. In 2003, the production of stainless steel in China was 1.78 million t, which increased by 56% compared with 2002. In 2004, the output was 2.3 million tons, 30% more than in 2003. It is estimated that by 2010, China's stainless steel production can reach 10 million T, become the world's largest stainless steel producer and consumer, annual consumption will reach 8 million T. The increase in consumption of special steel was the main reason for the increase in demand for molybdenum products. On the other hand, the rapid growth of national economy is also an important reason for the increasing demand of molybdenum deep processing products such as molybdenum catalyst, lubricating oil, molybdenum wire of electric light source and molybdenum wire of wire cutting. According to statistics, the demand for molybdenum in China was 11,700 t in 2002 and 13,000 T in 2003, increasing by 10% than 2002. It is predicted that it will reach 20,000 T in 2010 and reach 2.05 million T in 2020. Internationally, from 1998 to 2001, the world molybdenum production maintained at about 130,000 t. Since the global economic recovery in 2002, the world economy has been developing steadily, prompting the global demand for molybdenum has been increasing. From 2002 to 2004, the world molybdenum production increased by 10% annually. It is estimated that in the next 12 years, the global demand for molybdenum will remain at a high level of more than 150,000 tons.

The consumption structure of molybdenum in western countries is as follows: 75% of the iron and steel industry mainly uses molybdenum oxide, ferro molybdenum and other primary processing products as alloying elements in alloy steel. Metal molybdenum accounts for 6%, consumed in the form of molybdenum tip, molybdenum clamp, wire cutting molybdenum wire, electric light source molybdenum wire, molybdenum plate, etc., super alloy accounts for 4%, consumed in the form of molybdenum metal strip, etc., catalyst, other molybdenum chemical products account for 15%, consumed in the form of molybdenum chemical products. Structurally, in the form of deep processing products of molybdenum consumption accounted for 25%, with the adoption and development of new technology of molybdenum, such as molybdenum metal ceramic, composite refractory materials, the nanometer and application of powder coating, high temperature, high molybdenum metal palladium materials and chemical materials in the field of purification, high-tech areas such as the development of deep processing of molybdenum products, the proportion of consumption will also continue to increase. And our country at present the amount of molybdenum metal production is 30000 tons, of which 60% molybdenum and its products for export, domestic consumption accounts for only 40% of production, and due to the deep processing of molybdenum in China starts late, the product is small, less variety, low technology content and added value of products, thus forming of molybdenum low-grade products supply exceeds demand, and high technology, high value-added products, basically rely on imports. Therefore, with the continuous growth of China's national economy, with the development of automobile, iron and steel, machinery, electronics, transportation, aviation, aerospace, post and telecommunications, communications, military industry and agriculture, environmental protection, will further stimulate the high consumption of molybdenum and molybdenum products, especially the demand for high-grade molybdenum products. It can be seen that molybdenum and its products have a broad market, great potential and optimistic development prospect. Molybdenum and its Products market price analysis The increasing market demand for molybdenum products with limited resources is the main factor leading to its price rising, high. From 1994 to 1995, the world economy grew rapidly, the demand for molybdenum was strong, and the molybdenum price in the international market was running at a lower price. In 2003, the world economy recovered, and the global iron and steel increased rapidly. This led to an increase in demand for molybdenum and a sharp rise in prices.

The policy of our country to solve the energy problem is to give priority to both exploitation and conservation. Energy conservation is a specific "energy development", which is an effective way to solve the shortage of energy supply, protect energy resources and protect the environment. China's current energy utilization level is far lower than that of the developed countries in the world, the foundation of energy conservation is still very weak, and the potential of energy conservation is great. Energy saving is one of China's basic national policies, a long-term strategic policy for economic development, and the most common and urgent problem to be solved in economic activities. Rational use of energy and reduction of energy consumption are of great significance to reduce costs, improve economic benefits and change the current situation of serious energy waste in China.