The Separation of Carbonaceous Matter from Refractory Gold Ore Using Multi-Stage Flotation: A Case Study

As a pre-treatment method of refractory gold ore, carbonaceous matter (C-matter) flotation was investigated with multi-stage by rougher, scavenger, and cleaner stages. Different dosages kerosene MIBC (4-Methyl-2-pentanol) were applied the optimum dosage selected testing in each stage. With combination stage, four circuit designs suggested, which single-stage rougher (R), rougher-scavenger (R+S), rougher-scavenger-scavenger (R+S+SC), rougher-rougher cleaner-scavenger-scavenger flotations (R+S+RC+SC). The results indicated that scavenger increased C-matter recovery but reduced grade compared flotation. Cleaning concentrate improved significantly, slightly. achieved overall selectivity A followed cleaning both concentrates (R+S+RC+SC) resulted 73% combined 4%; final tailings 0.9%, where remaining locked, fine grained. demonstrate need for from ore to achieve selective separation suggested potential as efficient production.