This book is a monograph dedicated to hydrogen metallurgy technology in iron ore reduction in the world (mainly in China), aiming to accelerate the development of hydrogen metallurgy research and promote the low-carbon process in the iron and steel industry. This book mainly introduces the frontier theory and process technology of hydrogen metallurgy, focusing on the behavior and role of hydrogen in reducing iron ore. The specific contents include hydrogen production and storage technology, hydrogen direct reduction of iron oxide technology, hydrogen smelting reduction of iron oxide...