A study on dissolution of ulexite in ammonium acetate solutions

Kinetics of leaching of a Chinese laterite containing maghemite and magnetite in sulfuric acid solutions

“…The rate of the process is controlled by the slowest of these steps (Levenspiel, 1999;Sohn and Wadsworth, 1979). The application of shrinking core model to the kinetics of minerals leaching has been well documented (Aydogan et al, 2005;Demir et al, 2006;Demirkıran, 2008;Habbache et al, 2009;He et al, 2011;Mu and Zhai, 2010;Qiu et al, 2011;Van Essendelft and Schobert, 2009). The shrinking core model was successfully applied to fit the kinetics of nickel extraction from laterite at atmospheric pressure (Girgin et al, 2011;Iliana, 1991;Oderinde and Olanipekun, 1992;Senanayake and Das, 2004;Sukla and Das, 1987).…”

Leaching kinetics of calcined magnesite in acetic acid solutions

“…On the other hand, organic acids cannot be used as leaching agent for hard dissolving compounds. Also, use of organic acids at high temperatures may be limited because of low boiling temperatures and their decomposition [9][10][11].…”

Leaching kinetics of ulexite in borax pentahydrate solutions saturated with carbon dioxide

“…Demirkıran investigated it in the ammonium acetate solutions. The dissolution rate fit the chemical reaction control model and the activation energy was found to be 55.7 kJ/mol [17]. The aim of our study was to investigate the dissolution kinetics of ulexite in borax pentahydrate solutions saturated with CO 2 in a mechanical agitation system.…”