The conversion of kainite and solution saturated after ore dissolving into schoenite has been studied under laboratory conditions within 293‒333 К for 1 h. The highest conversion was found to be at 333 К for 1 h. Using Arrhenius equation the "apparent" activation energy was calculated. Its value shows the transition area of the conversion. The cooling and conversion were studied under various values of air mixing intensity. The air consumption was determined to achieve the highest conversion.
The kinetic investigations of phase formation processes in the mixture which contains BaO, Al2O3, Fe2O3 were carried out. The degree of conversion and the activation energy were calculated, the dependence of the reaction rate and the rate constant on reaction temperature was determined.
The basic kinetic regularities of aldol condensation reaction of propionic acid with formaldehyde on the B2O3-P2O5-WO3/SiO2 catalyst in gas phase have been investigated. The kinetic equations of the process have been proposed and the kinetic parameters have been calculated. The created kinetic model fairly well describes the condensation reaction of propionic acid with formaldehyde on the developed catalyst.
The conversion of langbeinite into schenite has been investigated under isothermal conditions within 273–333 K in the presence of mirabilite, sylvine and water. The reaction rate has been determined at various temperatures and “apparent” activation energy has been examined within 293–303 K. The reaction order by langbeinite has been determined as well.