Henan Zhongyuan best silicon metal, silica fume

China's production of silicon metal (silicon content mainly 98.5%), the original mainly metallurgical silicon, a chemical with a metal silicon (silicon content of 99.85 percent mainly) production has been developed mainly since the mid-1990s, in recent years, China's chemical production and exports with the rapid growth of the silicon. 1999 --2001, China's exports to Japan of chemical silicon has reached 22,000 tons, 30,000 tons, 40,000 tons, in 2001 China's exports to Japan accounted for more than chemistry of silicon 40% of Japan's imports of chemical silicon . Now China has begun to join the ranks of chemical silicon production and supply countries, to produce silicon chemical companies continue to increase. As Shanghai Guangji Silicon Materials Co., Ltd. in 2002, a full and open carbothermal reduction smelting process, resulting in production of China between 2002 and 2004, silicon metal rapidly from 100,000 tons, rising to 1.2 million tons. The result of comprehensive sanctions Development and Reform Commission, in 2006, actual production of silicon metal and then down to 700,000 tons. Total months in 2006, only Shanghai Guangji Silicon Materials Co., Ltd. Daigo silicon plant in the successful construction of the Xinjiang frontier ton metal silicon plant Jingxin plant. Other and new silicon plant. Chemical means silicon metal silicon and polycrystalline silicon used in organic production. From a global perspective, the consumption of metallurgical silicon is now more than the consumption of chemical silicon, but with the continuous development of science and technology, used in the field of organic chemistry of silicon and silicon semiconductor production continuously expanding, widely used in the production Organic silicon monomer and polymer silicone oil, silicone rubber, silicone building corrosion, water and the like, they have a high temperature, electrical insulation, radiation-resistant, water and other unique properties. For electrical, aerospace, machinery, chemicals, pharmaceuticals, defense, construction and other sectors. As the core of the electronic components of integrated circuits, more than 95 percent of semiconductor silicon, the semiconductor industry is the backbone of modern information. "Information superhighway" in the large number of applications in fiber optic cable, is also based on raw materials for the production of silicon metal. Now the United States and the EU chemical consumption of silicon metal silicon accounted for more than half of total consumption. Chemical use silicon as a high-tech fields and important basic industries are widely used, its consumption is stable growth. Under normal circumstances, the international market, chemical metallurgical silicon with silicon price per ton higher than the US $ 300-400. Therefore, from the meet export and domestic demand, or from improving economic efficiency silicon metal, improve product quality, develop chemistry with silicon production are necessary.