NEW EFFECTIVE TECHNOLOGICAL SOLUTIONS IN FERROALLOYS PRODUCTION WITH USING CARBONACEOUS REDUCING AGENTS (PART 1)
Basic types of carbonaceous reducing agents used to produce ferroalloys and requirements as to their characteristic are considered. It is analyzed data on advantages and disadvantages of using as additives of such kinds of ferroalloy reducing agents as carbon-silica coke, ferrous coke, char and single-component burden containing co-briquetted ore components and reducing agents. Own investigation related to production of special coke with adding activators into charge for coking are described. It is shown that presence of mineralizer in coking charge in the form of granular wastes of flotation enables increasing reactivity and specific electric resistance (SER) of carbonaceous reducing agent. Special role of carbon material SER for high-quality ferroalloys production and necessity to include value of coke SER into the list of parameters, which are regulated by the acting specifications is emphasized. It is noted conflicting objectives as to such parameters of reducing agent such as reactivity, moisture and gaseous volatiles content.