Investigation of Kinetic Parameters of Dehydrated Ulexite Mineral in Boric Acide Solution

Hidrate Edimiş Uleksit Mineralinin Borik Asit Çözeltisindeki Kinetik Parametrelerinin İncelenmesi

Abstract

Ulexite used in the production of boron compounds is an important mineral. In this work, the kineticparameters of dehydrated ulexite mineral and orginal ulexite in boric acid solution were investigated. According tothe DTA diagram, it was seen that the mineral did not change the structure until around 170 oC. It was observed thatthe dissolution kinetics increased to this temperature. In the SEM images, it was observed that the number of poresin the mineral was increased until 170 oC and afterwards number of pores was decreased. The kinetic parametersof the original ulexite were evaluated. Study indicates that the dissolution kinetics model in the boric acide wasfound as below;1-(1-X)-1 = [2.02(Rp)-1,013[CA]0 0,4579(S.L-1)-0650(M.S)0,0545e-2649,12T-1].t

Özet

Bor bileşiklerinin üretiminde kullanılan Uleksit çok önemli bir bor mineralidir. Bu çalışmada hidrate