从铜阳极泥中加压浸出铜

Pressure Leaching of Copper From Copper Anode Slime

研究了采用高压酸浸工艺处理铜阳极泥。对铜阳极泥进行预处理后,再控制浸出时的温度140℃,氧分压0.9 MPa,液固体积质量比5∶1,硫酸质量浓度250 g/L,通氧时间150 min,可有效地浸出铜,铜浸出率达93%以上,贵金属也得到富集。

Treatment of copper-slime with high-pressure acid-leaching process has been studied. First, the copper-slime was pre-treated at general conditions,then high-pressure leached at the conditions of temperature of 140℃ ,oxygen partial pressure of 0.9 MPa, solid-to-liquid ratio of 5 ： 1, mass concentration of sulphuric acid of 205 g/L and oxygenation time of 150 min, copper leaching rate reached 93 %,and other precious metals were also enriched.