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玛瑙山锰矿是一个以铁锰为主的多金属矿山,始建于1965年。经过20多年的开发建设,特别是十一届三中全会以来,依靠技术进步,开展资源综合利用,现已具有采、选、冶系列生产能力,经济效益连年增加。1990年,工业总产值达1102.31万元(80年不变价),实现利税375.39万元。该矿铁锰矿石有氧化铁锰矿(占60％)和原生铁锰矿(占40％)两种类型。其中氧
Onyx Manganese is a manganese-based polymetallic mines, was founded in 1965. After more than 20 years of development and construction, especially since the Third Plenary Session of the 11th Central Committee of the Communist Party of China, relying on technological progress and carrying out comprehensive utilization of resources, it now has a series of productive capacities of mining, dressing and smelting, and its economic benefits have been increasing year by year. In 1990, the total industrial output value reached 11,021,300 yuan (unchanged price for 80 years), and the profit and taxation amounted to 3.7539 million yuan. The ore iron ore manganese oxide (60%) and native ferromanganese (40%) are two types. Which oxygen