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简介:为此不锈钢复合管护栏,记者采访了多位钢铁业内专家,他们表示,从6.2%的尾矿中再进行二次利用,实际回收价值很小,基本上都是二氧化硅、氧化铝等物质。 庙沟铁矿15%左右品位的矿石是否如王敏所言被扔掉?何佳霞在上述文章中称,庙沟铁矿早
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