论文部分内容阅读
矿业局研制了一种探测器,这种探测器是用于将含铜成分从密执安(Michigan)自然铜和西部斑岩铜贫矿中分离出来的拣矿装置。这种拣选机可成功地预选矿石,废石也不必用费用昂贵的设备运输和提升。用新研制成功的一个感应平衡装置对破碎粒度为-2.5+1.3厘米(-1+1/2英寸)的密执安上部金斯顿(Kingston)矿石(0.9％Cu)和森蒂尼尔(Centennial)矿石(2.1％Cu)进行了拣选试验,结果精矿含铜分别为4.0％和7.5％,给矿回收率为85.％和80％。8％的矿石作为尾矿废弃。拣选大粒度矿石时分选效率有所提高。对粒度为-10+5厘米(-4+2英寸)的金斯顿矿样(1.6％Cu)和森蒂尼尔矿样(2.1％Cu)试验的结果为:精矿含铜分别为4.3％和4.5％,回收率92和91％。约60％的矿石为尾矿。硫化斑岩铜矿也可用电子拣选法分选,但分选效率较低。分选效果取决于分离程度。
The mining authority has developed a detector that is used to separate copper-bearing components from Michigan natural copper and western porphyry copper lean ore. This sorter successfully pre-selected ore, waste rock do not have to use expensive equipment to transport and upgrade. A newly developed inductive balance was used to measure the density of Kingston ore (0.9% Cu) and Centipede (0.9% Cu) with a crushed particle size of -2.5 + 1.3 cm (-1 +1/2 inches) Centennial ore (2.1% Cu) was subjected to a sorting test. As a result, copper concentrates contained 4.0% and 7.5% copper, respectively, and recovery rates for mines were 85.% and 80%. 8% of the ore is discarded as tailings. When sorting large size ore sorting efficiency has improved. The results of the Kingston sample (1.6% Cu) and the Centenier mineral sample (2.1% Cu) with a particle size of -10 + 5 cm (-4 + 2 inches) were as follows: % And 4.5%, recovery 92 and 91%. About 60% of the ore is tailings. Sulfide porphyry copper can also be sorted by electronic sorting method, but the sorting efficiency is lower. Sorting effect depends on the degree of separation.