This book mainly introduces pioneering technologies in the field of efficient utilization of iron ore, specifically including suspension magnetization roastingtechnology and equipment of complex refractory iron ore, coal-based reduction technology of extremely refractory iron ore, green preparation of super iron concentrate and clean steel base material, energy-saving grinding technology and equipment of new ceramic ball stirring mill, stepped flotation of carbonate-containing hematite and other common key technologies in mineral processing. This book comprehensively elaborates and refines the above-mentioned technologies and equipments from the basic theory, laboratory research, to the semi-industrial test and industrial test level.This book can be read for reference by college teachers and students, researchers, engineering technicians and enterprise administrators in the fields of basic research and applied technology research on the iron ore resource processing.