邦格采矿公司在利比里亚邦格矿床开采一种云铁石英片岩铁矿石,该矿石主要含有磁铁矿、假象赤铁矿和赤铁矿。原矿在大型圆锥破碎机里预碎,然后在一混合堆混匀,接着在自磨机里磨细,该自磨机与振动筛组成闭路。磨矿产品在一个三段汉弗莱-螺旋选矿 Bunge Mining Corporation produces a cloud-iron-quartz schist iron ore from the Bongo deposit in Liberia, which contains mainly magnetite, artifact hematite and hematite. The ore is pre-crushed in a large cone crusher and then mixed in a mixing pile, followed by grinding in a self-grinding mill, which forms a closed circuit with the shaker. Grinding products in a three-stage Humphrey-spiral dressing