2010年5月1日 · Vanadium extraction from stone-coal was investigated by oxygen pressure acid leaching and solvent extraction. The mineralogy of the stone-coal from Tongren City of …

2015年4月1日 · This paper reports on continuous testing of a process for the recovery of vanadium from a H 2 SO 4-HF solution, generated from the leaching of stone coal, by solvent …

2013年1月1日 · Leaching of roasted stone coal with sulfuric acid results in a mixed vanadium solution containing Fe (III), Fe (II), Al (III) and Mg (II). Separation of V from synthetic sulfate …

From 1970s on, some companies began to extract vanadium from stone coal by the classical NaCl roasting technology. However, the released exhaust gas containing Cl2 and HCl during …

A novel technology characterized by higher extraction of vanadium and recovery of valuable elements was developed to recover vanadium from stone coal. The brief flow of the novel …

2018年8月1日 · Chemical precipitation, ion exchange and solvent extraction all can be used to extract vanadium from stone coal leach solutions. Due to the low extraction of vanadium, …

To improve the extraction efficiency and selectivity, the binary extractant system consisting of bis-2-ethylhexyl phosphoric acid (D2EHPA) and 2-ethylhexylphosphonic mono-2-ethylhexyl …

2020年9月1日 · Chemical precipitation, ion exchange and solvent extraction all can be used to extract vanadium from stone coal leach solutions. Due to the low extraction of vanadium, …

2022年10月5日 · In the present study, low–temperature sulfation roasting–water leaching was employed to recover vanadium from stone coal vanadium ore. The vanadium was then …

For extracting vanadium from stone coal, it is necessary to break down the crystal structure of vanadium-bearing minerals. The traditional technology includes chloridizing roasting and water …