摘要
刚果金某高酸耗氧化铜矿,Cu 1.54%,Co 0.028%,S 0.12%,氧化率87%。原矿湿法冶金直接浸出酸耗较高,吨铜酸耗达15.29t/tCu。通过浮磁联合工艺试验研究,提高湿法冶金给料品位,选出硫化矿和氧化矿分别进行焙烧浸出和直接浸出,降低湿法冶金吨铜酸耗。高酸耗铜矿经过先浮选硫化矿、再硫化浮选氧化矿,浮选尾矿进行磁选的浮磁联合工艺流程,铜金属综合回收率79.29%。其中硫化精矿Cu 21.17%,回收率13.54%,氧化精矿Cu 2.74%,回收率60.49%,磁选精矿Cu 3.49%,回收率5.26%。将硫化精矿与磁选精矿、氧化精矿产品分别进行焙烧浸出和直接浸出,吨铜酸耗分别为0.38、7.58、5.62t/tCu,相比原矿直接浸出,吨铜酸耗下降明显。
A high-acid oxidation-consuming copper ore in the Democratic Republic of the Congo,Cu 1.54%,Co 0.028%,S 0.12%,oxidation rate 87%.The acid consumption of raw ore hydrometallurgy direct leaching is relatively high,and the acid consumption perton of copper reaches 15.29t/tCu.Through the test and research of the floating-magnet joint process,the feed grade of hydrometallurgy is improved,and the sulfide ore and oxidized ore are selected for roasting leaching and direct leaching respectively,so as to reducethe copper acid consumption per ton of hydrometallurgy.The high-acid-consuming copper ore undergoes a floatation-magnetism combined process of first flotation of sulfide ore,second sulfide flotation of oxidized ore,and magnetic separation of flotation tailings.Thecomprehensive recovery rate of copper metal is 79.29%.Among them,sulfide concentrate Cu 21.17%,recovery rate 13.54%,oxide concentrate Cu 2.74%,recovery rate 60.49%,magnetic separation concentrate Cu 3.49%,recovery rate 5.26%.Roasting leaching and direct leaching of concentrate products respectively,the acid consumption is 0.38,7.58,5.62t/tCu respectively,compared with the direct leaching of raw ore,the acid consumption perton of copper drops significantly.
作者
代定
张书超
DAI Ding;ZHANG Shu-chao(Zhejiang Huayou Cobalt Co.,Ltd,Tongxiang 314500,China)
出处
《世界有色金属》
2024年第15期97-99,共3页
World Nonferrous Metals
关键词
氧化铜矿
硫氧分离浮选
磁选
湿法冶金
高酸耗
copper oxide ore
sulfur and oxygen separation flotation
magnetic separation
hydrometallurgy
high acid consumption
