Synthetic Copolymers Tailor-Made for the pH Controlled Selective Flocculation of Extrafine Dispersions of Ilmenite with Respect to Rutile
Following a new Methodical approach to fully synthetic tailor-made polymeric flocculants for a given mineral dispersion, we prepared several multifunctional poolymers for the pH controlled selective respect to rutile. They had the structure of radical vinyl copolymers containing 1,2-catecholic functions either free or protected and acrylic acid units. They also had the distinctive property of changing their effect from fuocculating to dispersing or best fulfilment of the flocculation process. The tendency of the ilmenite particles to gather, as a result of the combined effect of the catec holic and carboxylic functions at acidic pH, is considered and essential condition and a preliminary process for the formation of flocs.
KeywordsAcrylic Acid Flocculation Process Ylic Acid Radical Vinyl Acrylic Acid Unit
Unable to display preview. Download preview PDF.
- 1.V. Bertini, F. Pocci, A. Marabini, Barbaro, and A. De Munno, 3-Vinyl-1, 2,5-thiadiazole/Methacrylic acid Copolymers as Ph Controlled Flocculants for Finely Divided Copper Minerals, Particulate Science and Technology, col. 4, pp. 203–212, (1986).Google Scholar
- 2.V. Bertini, A. Marabini, A. De Manno, M. Pocci, H. Picci, and M. Barbaro, Design, Preparation and Activity of Tailor Made Copolymers for the Ph Controlled Selective Flocculation fo Mineral Dispersions, Flocculation in Biotechnology and Separation Systemas, pp. 247–201, Elsevier Science Publ. B.V. Amsterdam. (1987).Google Scholar
- 3.V. Bertini, A. Marabini, A, De Nunno, M. Barbaro, and M. Pocci, Syntnetic Organic Polymers for the Selective Flocculation of Titanium and Iron Ores, Italian Patent Appl. n. 48007-A/87 and corresponding foreign applications.Google Scholar
- 4.O.E. Gebhardt and D.W. Fuerstenaun, Adsorption of Polyacrylic acid at Oxide/Water Interfaces, Colloids and Surfaces, col. 7, pp. 221–231. (1953).Google Scholar