A COMPREHENSIVE THERMAL ANALYSIS OF THE SAMPLES OF BRUCITE
We investigated the electrical resistance, the tangent of dielectric loss angle, derivatography and x-ray diffraction analysis of samples of brucite (The Kuldurskoe field, Khabarovsk Krai). Shows the relationship of process parameters of dehydration of brucite with electric parameters. On curves of temperature dependence of active electrical resistance (with AC voltage) and tangent of dielectric loss angle first identified the anomalous region in the temperature range 100–170 °C. Anomalies associated with phase transition by heating brucite. S.V. Gabelkov with the authors (Gabelkov et al., 2011) for the first time found that heat treatment of brucite in the temperature range 60–200 °C causes decomposition of part of the brucite and the formation of amorphous magnesium hydroxide with the assumed formula MgO·(1-x)H2O. The temperature of this transition depends on the purity of the sample.