Innovative Flotation Reagents: Locked Cycle Flotation Testing by Florrea Specialty Reagents for the Challenging Gold Ores in SarawakKarimah Armitha Lisanul, Kurniasari Anita Putri and Pahlevi Niko DianE3S Web Conf., 693 (2026) 01003DOI: https://doi.org/10.1051/e3sconf/202669301003