Large reserves of Bakal siderite ores necessitate the development and implementation of various methods for using them in metallurgical stages, both in pure form and in mixtures with other ores (for example, magnetite, brown iron ore, etc.). One of such methods of using a charge consisting of a mixture of siderite ore and brown iron ore in the production of sinter is considered. In order to optimize the sintering process, the mechanism of the main reactions occurring in the agglomeration layer has been studied. Knowing the thermal effects of these reactions, it is possible to determine the amount of heat required for the sintering process and obtain data on the consumption of solid fuel required to obtain a sinter with the required properties. The paper presents the results of studies obtained on an experimental setup. The effect on the sintering process of ore size, solid fuel consumption, layer height, ratio of siderite ore and brown iron ore content in the charge has been established. To obtain the necessary information with a minimum number of experiments, one of the methods for planning and processing experimental data was used. The results of the work indicate the possibility of using siderite ores in the metallurgical enterprises of the country.