Iron ore sintering subsection temperature model on the airflow rate by PID control

Abstract

Sintering is a complicated process in which the sintered ores are produced for the blast furnace. In this paper, a subsection temperature model on airflow rate is proposed to explain the effect of the airflow rate on the sinter bed temperature. Furthermore, the sintering process control strategy is put forward applying PID algorithm based on the optimization of airflow rate. The sintering process is divided into 24 stages to track the sinter bed temperature. Experimental results show that the airflow quantity is sufficient for the coke combustion and remarkable effects can be achieved on the electricity consumption saving of the main exhaust fan which is up to 32.6%.