Hyundai Cement's successful installation of a new cooler inlet*)

The economical need to improve fuel and power consumption, as well as the possibility to prevent formations of the so-called "red river" during clinker cooling in the grate cooler, convinced Hyundai Cement to install the new F L. Smidth Controlled Impact Section (CIS) with Mechanical Flow Regulators (MFR) in the cooler inlet of their 6 000 t/d kiln line No. 1. The installation of this new cooler inlet section replaced the first two compartments of the existing ten-compartment horizontal grate cooler. The flow regulator technology present in each air distribution plate is critical to providing a constant airflow throughout the cooler inlet section, independent of the granulometry of the clinker. This constant distribution of cooling air is essential for optimizing cooler efficiency and heat recuperation. Within the first week of operation, the operator immediately saw improved kiln operation, a reduction in fuel consumption, and a power saving. This paper will discuss the mechanical design of the new cooler inlet and the process benefits of this plant modification.