NONISOTHERMAL KINETICS OF THE SINTERING OF NATIVE RUSSIAN DOLOMITES

The mechanism of the densification and grain growth of native and henc e the most hard-to-sinter Russian dolomites obtained from the Lis'egor sk and Melekhovo-Fedot'evsk deposits has been elucidated by the method of nonisothermal kinetics. The pregrinding is found to enable the obt aining of high-density lime-periclase clinker from the above dolomites after sintering at a temperature up to 2100 K. The difference in the course of the collecting recrystallization between the dolomites from the above deposits is responsible for the differently proceeding densi fications. More rapid grain growth accounts for lower relative density of the lime-periclase clinker from dolomites of the Melekhovo-Fedot'e vsk deposit at the final stage of sintering.