Heat balance calculation for experimental-industrial rotating calcining equipment of low-capacity for production of construction binders

Various types of calcining equipment used in the production of building materials and goods are considered, and the advantages and disadvantages of the constructions under study are described. It is proposed to use ultra-short (up to 20 m) rotary kilns forexperimental-industrial production lines for the production of fine powders (binders for construction purposes) with a maximum calcining temperature of no more than 800 °C. On the example of the process of heat treatment of a modified carbonate charge, the heat balance has been calculated, confirming the possibility of using this type of equipment for obtaining small industrial batches of material (no more than 2 tph) in order to test innovative technologies without increased capital spending for the installation of expensive full-size rotating calcining equipment.