Date: Apr 03, 2019 According to FerroAlloyNet, only fifiteen companies who can extract vanadium from stone coal are under normal production and nine companies are suspending production in March. And among these fifiteen companies, in addition to self-marketing enterprises, only Xichuan Yudian and Wanxin Vanadium Industries, with a total output of about 300 tons, are the major producers. The overall output for this vanadium extraction from stone coal is 1130 tons in March with 670 tons vanadium pentoxide and 460 tons ammonium metavanadate.  

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