铜生产厂家为维持生产水平,正越来越多地采用低成本的湿法冶金工艺。过去曾用置换沉淀工艺从酸性溶液中回收铜,此法是将铁屑加入浸出液中置换出金属铜,因它具有投资低的优点,所以目前仍被使用,但其缺点是产品质量低(一般含铜50%)、酸耗高、操作费用高、置换效率低,铁屑消耗量大。 Copper producers are increasingly using low-cost hydrometallurgical processes to maintain their production levels. In the past, copper was recovered from an acidic solution by using a displacement precipitation process. This method replaces the copper metal with the leaching solution because it has the advantage of low investment and is still used at present. However, the disadvantage is that the quality of the product is low Copper 50%), high acid consumption, high operating costs, low replacement efficiency, large consumption of scrap iron.