Queensland's institutional digital repository (The University of Queensland) · 1999 · 23 citations · 0 references
PharmacyMining EngineeringMineral ProcessingPolymer MaterialsWater TreatmentIonic PolymersPolymer AnalysisPolysaccharide PropertiesPolysaccharide StructureAdsorption EquilibriaDepressant ActionFlotationFlotation SolutionsIonic StrengthIonic Strength DependenceIonic Strength EffectsPolysaccharide Materials
Talc is a naturally floatable material common in South African platinum bearing ore bodies. Long chain polysaccharide depressants are effective in depressing talc flotation and improving the grade of the concentrates of those ores with talc as a gangue constituent. It has been shown that polysaccharide type, molecular weight and solution ionic conditions can affect depressant adsorption onto talc and the subsequent depression of talc flotation. This work investigates the effect of molecular weight and polymer dosage on the depression of talc under different conditions of ionic strength and ion type for two types of depressants (carboxymethylcellulose and modified guar).