H-Reduction in the Non-Ferrous Industry

Main points:• It is challenging to use hydrogen as reductant for non-ferrous applicationsbecause of basic thermodynamic limitations.• It can be used for prereduction, like in the case of manganese.• Hydrogen is well suited to do selective reduction, like the recovery of Cu from Cuslag (liquid state) or iron from bauxite residue.核心要点：● 以氢气作为有色金属冶炼用还原剂面临较大挑战，该困境源于基础热力学层面的固有限制。● 氢气可应用于预还原工序，例如锰的预还原场景。● 氢气十分适配选择性还原作业，例如从液态铜渣（Cu slag）中回收铜，或是从赤泥（bauxite residue）中回收铁。