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根据伦敦金属与矿物研究所最近发表的报告,自1980年至1987年,世界非社会主义国家的黄金产量每年以5％的速度持续增长。其中,有三分之二的增产量来自美国、加拿大和澳大利亚。如果把这三个国家的各种黄金生产都算在内,那么这三个国家的年平均增长速度则高达21％上下。 在过去的八年里,黄金生产大幅度增长的一个显而易见的原因是:黄金价格平均在420美元/盎司(1盎司=31.1035克)左右,而七十年代的平均金价只接近120美元/盎司。这样就能使采金者获得较大的利润,因为如此高的价格,既使相对于贫矿来讲,也是有利可图的。 先进的黄金勘探设备和回收技术的不断应用,特别是美国的堆浸工艺和澳大利亚的活性炭再生技
According to a recent report published by the London Institute of Minerals and Metals, from 1980 to 1987, the world’s non-socialist countries’ gold production continued to grow at a rate of 5% annually. Of these, two-thirds of the increase came from the United States, Canada and Australia. If all the gold production in these three countries is taken into account, the average annual growth rate of these three countries will be as high as 21%. One obvious reason for the substantial increase in gold production over the past eight years is that the average price of gold is about $ 420 per ounce (1 ounce = 31.1035 grams), while the average gold price in the 1970s was only close to $ 120 an ounce. In this way, gold miners will be able to make greater profits because such a high price is profitable, even in the case of poor lean mines. The continuous application of advanced gold exploration equipment and recovery technologies, especially the heap leaching process in the United States and the activated carbon regeneration technology in Australia