Microwave Dehydration Behaviour of Inderite and Comparison with Thermal Analyses Methods

Abstract

Dehydration is called as the water removal from hydrated structure. Dehydration behavior is important for the usage areas and transportation of minerals. Magnesium borates can be used as additive materials in areas such as in the production of superconducting materials, in the composition of detergents, due to the content of boron in the frictionreducing additives in oils and insulating coating compositions due to their good mechanic and thermal properties. In this study, dehydration behavior of Inderite (Mg(B3O3(OH)5).5H2O) was experimented by both using microwave energy different and thermal analyses techniques. In microwave dehydration, power level was selected as 600W. Mass loss and drying rates were determined. In thermal dehydration, hydrated mineral was applied to thermal analysis (TG-DTG). Structural changes of hydrated and dehydrated samples were characterized using the techniques of XRD and FT-IR. XRD results show that crystallinity of sample may decrease in microwave dehydration. According to FT-IR results, characteristic band values of water disappeared at the end of the dehydration.

Dehydration behavior and kinetics of kurnakovite under microwave irradiation

“…The structural water percentage of kurnakovite was determined as 48.24%, which is equal to 0.9320 kg structural water/kg dehydrated mineral, according to thermal analyses results in the literature. 26…”

“…In the crystal system of inderite, the obtained data are not suitable for the calculation of kinetic parameters because the entire structural water cannot be removed. 26 The novelty of this research is the determination of the dehydration behavior and kinetic parameters of kurnakovite under microwave irradiation. Besides kinetic studies, the obtained compounds were characterized by different instrumental techniques.…”

Microwave Dehydration Modelling of Tincalconite

“…Previous microwave studies published in literature about especially minerals were examined [8][9][10][11][12][13][14][15][16][17][18][19]. Microwave dehydration behavior on different types of minerals such as goethite, boric acid, ilmenite, inderite, colemanite and ulexite was studied in the literature [8][9][10][11][12][13][14][15][16][17][18][19]. Thamsebi et al studied different microwave output power levels were used to analyze drying kinetic of coal in this experiment [8].…”

“…Saito et al researched the dehydration behavior of goethite mineral blended with graphite at different mole ratios [9]. Ozdogan et al researched the microwave dehydration behavior of the mineral inderite [10]. Eskibalci et al examined the effect of microwave treatment on the electrostatic separation of boron minerals, namely colemanite and ulexite [12].…”