MOSCOW, May 19 (Xinhua) -- Russian chemists have created a new way of extracting copper, nickel and molybdenum, which contributes to reducing the production costs of nonferrous metals and improve the environment around manufacturing plants, said the press service of Russia's National University of Science and Technology MISIS (NUST MISIS) on Friday. The new technology has four major advantages, including lower cost (due to less energy consumption), higher extraction rate, less impact on the environment (due to massive reduction of sulfur dioxide gas emissions) and higher merchantability of the extracted products, according to Alexander Medvedev, a professor at the NUST MISIS Department of Nonferrous Metals and Gold. Currently, the most widely used production method of nonferrous metals is energy-consuming and environmental harmful because of the emission of sulfur dioxide gas derived from the sulfur-bearing ores. Medvedev said the new method of ore enrichment that MISIS chemists came up with involves other auxiliary materials such as salt, water and acid, which has been proved to effectively cut energy consumption and prevent sulfur dioxide gas emissions. This method has been tested on the processing of nickle ores and copper ores in Russia, Myanmar and Mongolia, and has been introduced into the actual production in some places, Medvedev said. Enditem
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