Content:
Theory teaching Classification of flotation reagents and their physicochemical properties. Collectors - anionic collectors (xanthates, aerophlots, mercaptans, thiocarbanilides, fatty acids, sulfuric acid products); cationic collectors. Non-ionising collectors (collectors with sulfur and apolar collectors). Amphoteric collectors. Mechanism of adsorption of the collector. Modifiers - inorganic (acids, bases and salts), organic (non-ionising, anion and cationic polymers). Test I. Frothers-acid (compounds based on phenol and alkylarylsulphonate), alkaline, neutral (based on aromatic, alicyclic and aliphatic alcohols, ether-based frothers). Flocculants, coagulants, dispersants. Mechanisms of interaction of certain reagents at the interfaces: gas / liquid, liquid / mineral. Test II. Practical teaching Preparation of flotation reagents for experimental work. Application of certain physicochemical methods (electrophoresis, determination of Eh in the function of pH, IC spectrophotometry, ATR-IR, TG, DTA, DSC, determination of surface tension and contact angle, etc.) in order to investigate the mechanism of action of flotation reagents at the interfaces in the flotation pulp ( sulphide minerals, salt minerals). |