美国的金属矿开采

• 作 者: D.J.奥特利 黄启明
• 机 构: 美国迈梅特国际公司 顾问
• 出 处: 国外金属矿采矿
• 发表日期: 1988年07期
• 关键词: 金属矿开采 肯尼科特公司 厂房设备 贱金属 陈旧过时 黄金产量 矿石品位 铜业公司 精铅 铜工业

美国的原生金属工业,包括主要贱金属和贵金属的勘探、开采、选矿、冶炼和精炼等在内,现已成为一个实力更加雄厚、更加充满经济活力和效率更高的工业体系。而由于金属价格下跌,直接和间接生产成本增加,厂房设备陈旧过时以及矿石品位降低和矿床产状日趋复杂,冶金工业生产曾一度很不景气并处于严重的经济困难之中,大约经过6年之后始出现当前的新形势。因此,对这一段历程作一简要评述是适时的和恰当的。

The primary metal industry in the United States, including the exploration, extraction, beneficiation, smelting and refining of major base metals and precious metals, has now become a stronger, more economically viable and more efficient industrial system. Metallurgical production, once sluggish and in severe economic hardship due to declining metal prices, increased direct and indirect costs of production, outdated plant equipment and declining ore grades and complex occurrences, was a period of about six years The beginning of the current new situation. Therefore, it is timely and appropriate to give a brief review of this passage.