Configuration of flowsheet and reagent dosage for gilsonite flotation towards the ultra-low-ash concentrate

Abstract Gilsonite has a wide variety of applications in the industry, including manufacture electrodes, paints and resins, as well production asphalt roof-waterproofing material. ash is determining parameter for its application some industries (e.g., gilsonite with content < 5% used an additive drilling fluids, resins). Due to shortage high grade (low ash) reserves, aim this study develop processing flowsheet ultra-low-ash (< 5%), based on process mineralogy studies tests. For purpose, mineralogical flotation tests have been performed sample average 15%. According studies, carbonates clay minerals are main associated impurities (more than 90 vol.%). Furthermore, sulfur was observed two forms mineral (pyrite marcasite) organic structure gilsonite. Most these interlocked size fractions smaller 105 µm. The fraction + ? 420 µm higher pure (approximately 90%) other fractions. By specifying gangue manner extent their interlocking gilsonite, 75 selected perform Flotation were using different reagents collector (Gas oil, Kerosene Pine oil), frother (MIBC) depressant (sodium silicate, tannic acid, sulfuric acid sodium cyanide) dosages. Based results, use kerosene collector, MIBC mixture cyanide had most favorable results rougher stage. Cleaner recleaner stages concentrate resulted product 4.89%. µm, it better re-grinding stage beforehand cleaner stages. Finally, tests, crushing initial granulation rougher, proposed produce content.