DRC has a vast mining industry and qualified Mining professionals with ...5 小时前 · The project is expected to produce about 1 400 t/y of tin concentrate and 220 t/y of tantalum concentrate diamonds since the mid-1990s. A China … · METC and Outotec collaborated to develop a 50 000 t/y copper cathode and a 16 000 t/y cobalt-in-hydroxide production plant for Chemaf
