A Case Study on Large-scale Grate-kiln Production of Fluxed Iron Oxide Pellets: Zhanjiang Pelletizing Plant of BaoSteel

Abstract

ABSTRACT There has been increasing demands for large-scale pelletization equipment recently in order to improve the composition of blast furnace burden, conserve energy and reduce emission. Accordingly, the BaoSteel built the Zhanjiang palletization plant with the capacity of 5 million-tons per year, which holds the record in the world for the largest grate-kiln to produce fluxed pellets. The features included preprocessing raw materials with the combination of ball mills and high-press roller presses, production of fluxed pellets with limestone, pre-mixing of dust wastes, and advanced desulfurization technologies. This plant has marked an important step in the development of grate-kiln pelletization technology.