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| A stone coal vanadium ore treated by sulfuric acid curing-column leaching process |
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Received:September 30, 2019
Revised:October 25, 2019
Accepted:October 30, 2019
Published Online:July 16, 2020
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| DOI： |
| KeyWord:stone coal vanadium ore; sulfuric acid curing; column leaching; heap leaching |
| Author | Institution |
| wang ming |
Xi’an Northwest Geological Institute of Nonferrous Metals Co. Ltd. |
| cheng qian |
Xi’an Northwest Geological Institute of Nonferrous Metals Co. Ltd. |
| qi jian yun |
Xi’an Northwest Geological Institute of Nonferrous Metals Co. Ltd. |
| li jie |
Xi’an Northwest Geological Institute of Nonferrous Metals Co. Ltd. |
| ning xin xia |
Xi’an Northwest Geological Institute of Nonferrous Metals Co. Ltd. |
| jin jian ping |
Xi’an Northwest Geological Institute of Nonferrous Metals Co. Ltd. |
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| Abstract: |
| The main mineral of a stone coal vanadium ore (containing V2O5 0.865%) is quartz, in addition, the content of potassium feldspar, sericite, dolomite and calcite are higher. A sulfuric acid curing-column leaching process was adopted to treated the stone coal vanadium ore. Conditional experiments and series curing-column experiments showed that: when raw ore particle size of -12 mm, curing sulfuric acid dosage of 20%, curing supplementary water capacity of 6%, curing temperature of 125℃, curing time of 4 h, the column leaching rate of (0.25*ore weight g)ml/h and spraying time of 24 h, the content of tailings V2O5 decreased to 0.15%, and the leaching rate of vanadium was 83.5%. In addition, impurity ions such as Fe, Al2O3, and K2O in the column leaching solution did not accumulate significantly. The sulfuric acid curing-column leaching process reduced the amount of sulfuric acid, avoided mash overflowing during the leaching process, and reduces the solid-liquid separation load of the leaching slurry, comparing with the conventional stirring leach process. |
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