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1987年世界锰矿产量下降到1983年以来较低水平,南非减产最明显。美国1987年仅有两家生产锰铁和金属锰,Chemetals 公司新建一个氮化锰铁和锰粉厂,主要产品包括氮化中碳锰铁、块状氮化锰铁、焊接用锰铁粉和氧化锰粉。澳大利亚塔斯马尼亚公司三台锰铁炉中的两台扩大到29000kVA,第三台提高到36000kVA,该公司每年可生产20万吨高碳锰铁或12万吨硅锰。巴西1987年锰
The world’s manganese output in 1987 dropped to a lower level since 1983, with the most obvious decrease in South Africa. The United States in 1987 only two of the production of ferromanganese and metallic manganese, Chemetals company a new ferromanganese and manganese powder plant, the main products include nitrocarburizing ferromanganese, bulk ferromanganese nitride, ferromanganese powder for welding and manganese Manganese oxide powder. Two of Tasmania’s three ferromanganese furnaces in Australia expanded to 29,000kVA and the third to 36,000kVA. The company can produce 200,000 tons of high-carbon ferromanganese or 120,000 tons of silicomanganese per year. Brazil 1987 Mn