engleski

Activated sintering of magnesium oxide from sea water

The process of activated sintering of magnesium oxide obtained from sea water (by precipitation with 80 percentage and 120percentage of the stoichiometric quantity of the dolomite lime) was examined with addition of 1, 2 and 5 wt percentage TiO_2, at temperatures of 1600°C and 1700°C with soaking at the maximum temperature of 1, 3 and 5 hours respectively. The product density and porosity were examined and the dependences obtained were described by appropriate analytical expressions. The compatibility relationships between addition of TiO_2 and the B_2O_3 content in the sintered magnesium oxide samples were determined, based on an important theorem due to Onsanger. The phenomenological coefficients were calculated for two irreversible processes, namely those of formation of Ca_2B_2O_5 and CaTiO_3 respectively.

activated sintering; magnesium oxide; sea water; TiO_2 addition; B_2O_3; phenomenological coefficents

nije evidentirano