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钴金属在国民经济中占据着重要地位,它又是一种极为重要的战略物资。但到目前为止尚未发现单一的钴矿床,钴多伴生在其它矿物中,不但品位低,而且成分复杂。尽管采用了许多现代冶金方法和新技术,钴金属的回收率仍不高,例如赞比亚恩卡拉厂,铜钴矿石浮选时,钴入精矿的回收率仅为32％,硫酸化焙烧钴的浸出率约为70～75％,从矿石到金属钴的回收率仅为23％左右。加拿大萨斯喀契温堡精炼厂,钴镍精矿的钴回收率仅为50％。属于氧化矿的海底锰结核火
Cobalt metal occupies an important position in the national economy, it is also an extremely important strategic material. However, so far no single cobalt deposit has been found. Cobalt is often found in other minerals, not only in low grade but also in complex composition. Despite many modern metallurgical methods and new technologies, recovery of cobalt metal is still not high. For example, at the Nkara Plant in Zambia, the cobalt-cobalt ore flotation resulted in a recovery of cobalt concentrate of only 32% Leaching rate of about 70 to 75%, from ore to cobalt metal recovery rate of only about 23%. Cobalt-nickel concentrate cobalt recovery is only 50% at the Saskatchewan Refineries in Canada. Sea mine is manganese oxide nodules fire oxide