A Process for Sintering of Diopside Prepared from Dolomite

摘要

Diopside CaMgSi_2O_6 is an attractive material because of its multi applications. It was prepared by sintering the mixture at different temperatures (900°C-1300°C). Starting materials were pure SiO_2 and dolomite raw materials. In order to improve the properties of sintered samples, such as the density egg white (ovalbemin) has been added into diopside. Furthermore, the effect of P_2O_5 addition on the sintering of the prepared diopside in the range of 0.5 to 5.0 wt% was studied as a function of the sintering temperature. A density of 96.5% of theoretical has been achieved when 5.0 wt% P_2O_5 was added, at a sintering temperature of 1225°C, whereas the density of diopside samples, without P_2O_5 addition was lower than 83.0% of theoretical.