Mathematical model formation of the process of deriving boric acid from ulexite mineral by full factorial design method

Authors : Halil DURAK, Yasar GENEL, Novruz BASHIROV, Genber KERIMOV

Pages : 261-268

View : 21 | Download : 11

Publication Date : 2013-07-05

Article Type : Other Papers

Abstract :Ulexite is a sodium calcium boron hydrate used in producing compounds, its chemical formula is  Na2O2CaO5B2O3.16H2O, and it superabounds in Turkey. One of the significant boron compounds derived  from boron minerals is boric acid. The aim of this study is producing boric acid in the wake of interaction of  ulexite with hydrochloric acid solution, and offering an alternative process to producing boric acid by forming  the mathematical model of this processing. Full factorial design method has been used in the study. Some of the  parameters used in the process have been made steady, and the others have been accepted as variable factor in  formation of mathematical model. Invariant parameters are granule size, reaction time and stirring speed.  Hydrochloric acid concentration has been accepted as temperature and solid to liquid ratio variable factors for  the formation of mathematical model. Primarily, the mathematical model of the process and three-parameter full  factorial desing have been evaluated in the measureless coordinate system, then the values in the model has  been assessed by Student criteria, and the validity of the originated model has been controlled by Fisher criteria. Henceforwards the current model of the process has been formed in the real coordinate system. Key words: ulexite, boric acid, full factorial design, mathematical model.
Keywords : ulexite, boric acid, full factorial design, mathematical model