Abstract
The reliable data on the thermal behaviors for metals, alloys or metallic compounds, and for the reaction between them, are required at increasingly higher temperatures in the field of metallurgy. The recent developments in calorimeters for heats of reaction, solution and mixing studies at high temperatures are reviewed focusing on theoretical and practical purposes in the pyrometallurgy. The reliable calorimeters for use above 1000°C are not so easy to construct, though they are very important in the pyrometallurgy. The present status and some topics of calorimetric investigations for the liquid substances are described. The newly developed method of quantitative thermal analysis using an adiabatic calorimeter is available for determining the thermodynamic quantities in binary melts. The thermal conductivity and emissivity studies are also surveyed briefly.