lime-fluorspar slag

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niobium processing — Introduction preparation of the ore for use in various products. Niobium (Nb) has a body centred cubic (bcc) crystal structure and a melting point of 2,468° C (4,474° F). Of the refractory metals, it has the lowest density and best… … Universalium
Argon Oxygen Decarburization — (AOD) is a process primarily used in stainless steel making and other high grade alloys with oxidizable elements such as chromium, aluminum, etc. After initial melting the metal is then transferred to an AOD vessel where it will be subjected to… … Wikipedia
Fluorite — General Category Halide mineral Chemical formula CaF2 … Wikipedia
chemical industry — Introduction complex of processes, operations, and organizations engaged in the manufacture of chemicals and their derivatives. Although the chemical industry may be described simply as the industry that uses chemistry and… … Universalium

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