The monograph presents the results of a study on topical issues of developing scientifically based principles for intensifying the roasting of cement clinker in a rotary kiln, aimed at energy and resource saving, optimization of technological processes in the face of changes in the traditional raw material base, production parameters based on non-traditional local raw materials. The issues of obtaining Portland cement clinker in high-temperature apparatuses are considered with a change in the properties and mineralogical composition of the processed raw materials; studies of the features of physical, chemical and technological processes of clinker synthesis using non-traditional raw materials; development of principles for controlling the firing process and ways to improve the quality of clinker; development of an algorithm for designing and improving a complex of heat exchange devices in a rotary kiln, taking into account changes in the physical properties of raw sludge when heated. The monograph is intended for engineering, technical and scientific workers involved in the production of high-performance materials for the construction industry, teachers, masters and bachelors of technical universities.