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People often ask about the extraction of vanadium from stone coal in forums. Currently, the only methods that have been successfully industrialized are acid leaching-extraction, alkali leaching-ion exchange, sodium roasting-water leaching-ion exchange, etc. Among them, sodium roasting is rarely used due to environmental reasons (it is used in rural areas and a small number of manufacturers). The first two are widely used, but they also have higher costs. Economic and environmentally friendly processes have not yet been seen. Below is a link to the forum section about vanadium extraction:: Several documents on vanadium extraction from stone coal http://bbs.hcbbs.com/viewthread.php?tid=187777 What is the conversion problem of sulfur dioxide during stone coal roasting? (asking for help) http://bbs.hcbbs.com/viewthread.php?tid=339480 Caustic mud is used as a roasting additive to extract vanadium pentoxide from stone coal. http://bbs.hcbbs.com/thread-187811-1-41.html Vanadium smelting method http://bbs.hcbbs.com/viewthread.php?tid=337547 How can the sodium roasting water leaching process of vanadium save water? http://bbs.hcbbs.com/viewthread.php?tid=410091 Some literature on the extraction of vanadium from stone coal http://bbs.hcbbs.com/redirect.php?tid=233438&goto=lastpost Some information on vanadium extraction from stone coal http://bbs.hcbbs.com/viewthread.php?tid=313343 This post was last edited by Happy Distance on 2009-3-30 21:04 ]