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Metallurgical And Chemical Processes For Recovering Vanadium And Iron Values From Vanadiferous Titanomagnetite And Vanadiferous Feedstocks
Metallurgical And Chemical Processes For Recovering Vanadium And Iron Values From Vanadiferous Titanomagnetite And Vanadiferous Feedstocks
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机译:从钒钛磁铁矿和钒原料中回收钒和铁的冶金和化学工艺
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摘要
The present disclosure broadly relates to a process for recovering vanadium, iron, titanium and silica values from vanadiferous feedstocks. More specifically, but not exclusively, the present disclosure relates to a metallurgical process in which vanadium, iron, titanium and silica values are recovered from vanadiferous feedstocks such as vanadiferous titanomagnetite, iron ores, vanadium slags and industrial wastes and by-products containing vanadium. The process broadly comprises digesting the vanadiferous feedstocks into sulfuric acid thereby producing a sulfation cake; dissolving the sulfation cake and separating insoluble solids thereby producing a pregnant solution; reducing the pregnant solution thereby producing a reduced pregnant solution; and crystallizing ferrous sulfate hydrates from the reduced pregnant solution, producing an iron depleted reduced solution. The process further comprises removing titanium compounds from the iron depleted reduced solution thereby producing a vanadium-rich pregnant solution; concentrating vanadium and recovering vanadium products and/or a vanadium electrolyte.
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