Mar 04, 2022 · Washing of iron ore fines and slime (10% and 25% w/v, slurry concentrations) with two types of surfaceactive agents (sodium humate (synthesized) and AD 200 (commercial)) at varying concentrations at pH 8 was conducted for ascertaining the efficacy of dispersants in beneficiating the lowgrade iron ores. The beneficiation process follows the .