The investigation results of the influence of the selected parameters of the thermal reclaimer operations on the temperature changes in the

combustion chamber and the process energy consumption, are presented in the hereby paper. The analysis of the heat treatment was

performed with the application of a fresh foundry sand, since it was assumed that the dominating energy part was used for the grain matrix

heating and due to that, the energy used for burning small amounts of organic binder remained on sand grains could be omitted. Thermal

treatment processes performed under various conditions were analysed from the point of view of a gas consumption and temperatures

obtained in the experimental reclaimer. The recorded data allowed to point out the parameters having essential influence on the process of

the quartz matrix heating in the combustion chamber as a gas consumption function.