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美国阿利桑那州土桑以西40哩的锡铃(Silver Bell)选矿厂虽然主要以产铜而著名,但在此日处理8,000吨的选矿厂里,也把钼作为副产品加以回收。银铃的矿石从相距约两哩的两个矿井运来。铜主要是辉铜矿,其成因是它在一大变动带中,经2—3次褶曲二次富集的结果,这是典型的斑岩铜矿矿床,银铃矿的矿石硬度为中等。矿石组成为:钼与铜之比约为1:65。用来回收钼的铜精矿中,在开始选别时钼与铜之比也为1:65。该矿石中矿化是原生的,富集的不明显,但是在硅化比较严重的、较硬的岩石中,辉钼矿较普遍。目前发现的辉钼矿为各种定向的、粒度大小一定的鳞片;多半在断口处与石英细
Although the Silver Bell concentrator, 40 miles west of Tucson, Arizona, is famous for producing copper primarily, molybdenum is also recycled as a by-product in the 8,000-ton concentrator it processes today. Silver bells ore shipped from two mines about two miles apart. Copper is mainly chalcocite. The reason for this is that it is a result of secondary enrichment of 2-3 fold faults in a large deformation zone. This is a typical porphyry copper deposit, and its mineral hardness is moderate. Ore composition: molybdenum and copper ratio of about 1:65. Copper concentrate used to recover molybdenum, molybdenum and copper ratio of 1:65 at the beginning of sorting. Mineralization in the ore is native, with little obvious enrichment, but molybdenite is more common in harder, more silicified rocks. Found molybdenite for a variety of directional, a certain size of the size of the scales; mostly at the fracture with quartz fine