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经过近半个世纪的开采,攀钢集团公司仅在位于攀枝花市中心城区的东区就排放表外矿废石资源7.5亿吨,这些曾经的废石、弃石如今却焕发出勃勃生机。仅2012年,攀枝花市东区就产出铁精矿150万吨、钛精矿30万吨,年产效益达8.7亿元。庞大的废石资源宝库我国矿山一直采用“双指标”边界品位,即“地质边界品位”和“最小业品位”。因此便产生了表内矿(品位高于最小工业品位的块段)和
After nearly half a century of mining, the Panzhihua Iron and Steel Group Co., Ltd. has only released 750 million tons of off-balance-sheet waste rock resources in the eastern district located in the downtown area of Panzhihua City. These former waste rock and discarded stones are now full of vitality. In 2012 alone, the eastern district of Panzhihua City produced 1.5 million tons of iron concentrates and 300,000 tons of titanium concentrates, with an annual output of 870 million yuan. A huge treasure trove of waste rock resources Our mines have been using the “double index” boundary grade, that is, “the geological boundary grade” and “the smallest industry grade.” As a result, the mines in the table (blocks whose grade is above the minimum industrial grade) and the resulting mines