Research of the process of decomposition of dust of clinker reducing furnaces with nitric acid

The results of studies of the influence of the norm of nitric acid on the composition of the liquid and solid phases, the degree of transition of components into solution during the processing of clinker kiln dust. The experimental procedure was as follows: the calculated amounts of nitric acid and dust from clinker kilns were simultaneously loaded into a quartz reactor and mixed for various times (from 10 to 60 min), then the resulting suspension was separated in a centrifuge. The weight method was used to determine the amount of liquid and solid phases. In order to minimize the heat consumption for heating there actor, studies were conducted to establish a minimum temperature that provides an acceptable degree of decomposition of dust from clinkerkilns. Thus, with an increase in the rate of nitric acid, the degree of transition of the target components (K₂O; Na₂O; CaO) insolutionincreasesslightly, andnon-targetcomponents (Fe₂O₃-Al₂O₃)-increases quite a lot.