Considering Specific Ion Effects on Froth Stability in Sulfidic Cu-Ni-PGM Ore Flotation

The mining and mineral processing of Cu-Ni-PGM sulfide ores in South Africa occurs semi-arid regions. scarcity water resources these regions has become one the biggest challenges faced by concentrators. As a result, concentrators are forced to find ways through which they can manage control their usage. recycling re-use process concentration plants therefore common practice. This practice is beneficial that it reduces reliance on municipal harnesses compliance stringent environmental regulations freshwater approach also offers better response Sustainable Development Goals (SDGs) for industry, as its preservation form part SDGs. could, however, be somewhat concerning operator because recirculated often higher concentrations ions compared fresh or potable water. an unintended change quality may affect critical aspects flotation such stability froth. issue led need both industry researchers field have greatest impact froth stability. Thus, authors this study investigated effects various typical ore using 3 L bench scale cell. Solids recoveries were used proxies These further complemented bubble size, recoveries, foam height, dynamic from two-phase systems. A resulted observations supported findings three-phase study. Generally, single salt solutions containing Ca2+ Mg2+ studies, increases heights stability, decrease size contained Na+. SO42− increased Cl− NO3−. results showed divalent inorganic electrolytes—Ca2+, Mg2+, SO42−—were more froth- foam-stabilizing than monovalent electrolytes—Cl−, NO3−, finding was agreement with previous research. deemed crucial development management protocol sulfidic However, comparative tests needed subjects future investigative work ascertain specific ion ores.