Effect of foamability index of short chain alkyl amines on flotation of quartz Sabina Szczerkowska, Marta Siedlarz, Marta Wojcik and Przemyslaw B. Kowalczuk E3S Web Conf., 8 (2016) 01019 Published online: 16 September 2016 DOI: 10.1051/e3sconf/20160801019