Reduction of vanadium-titanium magnetite concentrate composite biomass briquette by pure hydrogen under microwave field and separation of titanium and ironShuai Tong, Liqun Ai, Lukuo Hong, Zhipeng Yuan and Shuai ZhangMetall. Res. Technol., 121 4 (2024) 406DOI: https://doi.org/10.1051/metal/2024043