Molybdenum carbide has a high melting point and hardness, good thermal stability and mechanical stability, and excellent corrosion resistance and other characteristics. Molybdenum is a silvery white refractory metal, a melting point of 2615 ℃, density of 10.2 g / cm 3, the expansion coefficient is small, a special tube is almost the same coefficient of expansion of the glass. Molybdenum stable at room temperature is higher than 600 ℃, rapidly oxidized.
2013年8月13日星期二
The reply on May 15 of this year,
The reply on May 15 of this year, Shifang Municipal Committee mailbox "on the Hongda Group molybdenum plating Copper 'pollution' reply 'exactly the same content. Ministry of Environmental Protection web site "on February 28, 2012 to be made of the construction project environmental impact assessment document approved the decision of the publicity," shows that the proposed economic development zone in Shifang Hongda molybdenum-copper project mainly includes construction of 40,000 tons / year of molybdenum smelting system, 400,000 t / y of copper cathodes smelting system and power plant three parts, of which molybdenum smelting and copper smelting system planning system constructed in two phases. The total investment of 6.724 billion yuan, of which 965.47 million yuan investment in environmental protection.The leaders at the groundbreaking ceremony, said Hongda molybdenum-copper project on the changing status of Chinese molybdenum copper industry to improve the level of utilization of multi-metal mine has a very important role; right support Sichuan, Deyang, especially hard-hit Shifang socio-economic development for the benefit of local people has a very important role. Shifang Chengdu is a county-level city, south of Chengdu, more than 50 kilometers, a population of about 43 million people, the comprehensive economic strength for many years among Sichuan "top ten counties" Second, the western hundred counties top ten. 2006, Shifang China Mining Association has been named "hometown of Chinese mineral water." In 2008 the "5.12" Wenchuan earthquake, there are 5,924 people were killed in Shifang, economic losses of 88.9 billion yuan.A few months ago has raised concerns about pollution Hongda Group molybdenum-copper project's environmental problems to local residents raised concerns about month ago, on February 21 this year, "Shifang Window" column in the online petition, which released the city's Bureau for Letters " With regard to Hongda Group Molybdenum Copper 'pollution' letter of reply ", said by the State Council" Petition Ordinance "relevant" territorial management, graded responsibility, who is in charge, who is responsible "principle, people reflect questioned Hongda Group plans to invest 104 billion yuan in building molybdenum copper production projects produced by the "pollution" was handed over to the EPA process. Handling of reply, said that the project has passed the provincial Development and Reform Commission approval, the State Environmental Protection Department for approval the proposed project. Currently, the project has passed the Environmental Protection Department's technical review, administrative examination and approval procedures to enter the ministry,
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