This chapter deals with ferroalloys containing rare-earth metals (REM). Among known REM, only three have significant metallurgical relevance (lanthanum, yttrium, and cerium), and they are considered in more detail. This chapter presents an overview of these REM, their properties, and their reactions with other elements and explores major relevant phase equilibria diagrams. REM sources (raw materials) and methods for their reduction are also presented. Technology for smelting of FeSiREM alloys by carbon and aluminum reduction methods is described.

This handbook gathers, reviews and concisely presents the core principles and varied technology involved in processing ferroalloys. Background content in thermodynamics, kinetics, heat and mass transfer is accompanied by an overview of electrical furnaces theory and practice as well as sustainability issues. The work includes detailed coverage of the major technologies of ferrosilicon, ferronickel, ferromolybdenum, ferrotungsten, ferrovanadium, ferromanganese and lesser known minor ferroalloys. Distilling the results of many years' experience in ferroalloys, Michael Gasik has assembled contributions from the worlds' foremost experts. The work is therefore a unique source for scientists, engineers and university students, exploring in depth an area which is one of the most versatile and increasingly used fields within modern metallurgy. - All-in-one source for the major ferroalloys and their metallurgical processing technologies, cutting research time otherwise spent digging through old handbooks or review articles. - In-depth discussion of the C, Si, Al-reduction, groups II-VIII of the periodic table, supporting analysis of metallurgical processing. - Contemporary coverage includes environment and energy saving issues.

This chapter examines the theory and technology applied for the production of manganese ferroalloys. The focus is on smelting of ferromanganese, silicomanganese, and manganese metal in electric furnaces with different process types. The properties of manganese as well as its major compounds, minerals, and ores are presented. Agglomeration methods used to prepare ores for smelting are described. Refining techniques for low-carbon manganese ferroalloys are discussed, and postprocessing operations are outlined, together with tapping and casting processes. Additionally, the energy balance of manganese alloys smelting is outlined, and some potential hazards of the smelting technology are discussed, together with their preventive actions.

This introductory chapter describes the importance of ferroalloys in modern steelmaking and the benefits of applying ferroalloys instead of pure alloying elements. The idea, scope, and structure of the book are outlined.