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| Experimental study on recovery of vanadium and nickel from coal cinder containing high carbon and vanadium |
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Received:July 25, 2023
Revised:September 12, 2023
Accepted:September 19, 2023
Published Online:March 24, 2025
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| DOI： |
| KeyWord:vanadium battery; vanadium-containing coal cinder; decarbonization; vanadium extraction battery; vanadium-containing coal cinder; decarbonization; vanadium extraction. |
| Author | Institution |
| WANG Yan |
BGRIMM Technology Group. Beijing ;China |
| YUAN Chaoxin |
BGRIMM Technology Group. Beijing ;China |
| HUANG Haihui |
BGRIMM Technology Group. Beijing ;China |
| WANG Weizhen |
BGRIMM Technology Group. Beijing ;China |
| GAO Chong |
BGRIMM Technology Group. Beijing ;China |
| Jin Rangong |
BGRIMM Technology Group. Beijing ;China |
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| Abstract: |
| High carbon vanadium cinder in an Indian plant contains 3.57% vanadium and 1.19% nickel, which has a high recovery value. However, after detailed raw material analysis, the slag has a high carbon content (14.61%). The effect of traditional direct leaching is poor, so it is necessary to decarbonize the vanadium containing cinder by oxidation roasting first, and then to extract vanadium and nickel by sulfuric acid-water leaching technology .In this paper, after detailed raw material analysis of a plant with high carbon and vanadium content in India, due to high carbon content, direct leaching effect is poor, so it is necessary to first carry out roasting decarburization test and then carry out sulfuric acid aging water immersion to extract vanadium and nickel. The roasting, sulfuric acid curing and water leaching process parameters were studied, and the roasting temperature and time were investigated. Calcine grinding time; Calcine sulfuric acid curing ratio, temperature, time; The effects of the leaching conditions such as the ratio of solid to liquid, temperature and time were obtained by comparing the leaching rates of vanadium and nickel. The results showed that the optimum roasting temperature and time were 800 ℃ and 2 h, respectively. The optimum leaching size of calcine is less than 0.0750mm, the proportion is 90%, and the optimum grinding time of calcine is 120 s. ; The optimum curing parameters were the acid-material ratio of 1.5:1 and curing for 1 h at 200 ℃. The optimal water leaching condition is that the solid-liquid ratio 4:1 material is leach at 95 ℃ for 2.5 h.In this paper, the roasting decarburization test, calcine grinding test and calcine leaching test were carried out respectively, and the roasting temperature and time were investigated. Calcine grinding time; Calcine sulfuric acid curing ratio, temperature, time; the leaching conditions of calcine leaching, such as the ratio of solid to liquid, temperature and time .The best parameters were obtained by comparing the leaching rates of vanadium and nickel The resulof the optimum roasting parameters of 800°C and 2 h. The optimum parameters for the roasting sand grinding time tests were 120 s. By comparing the direct leaching of roasted sand with the sulphuric acid maturation-water leaching process, it was concluded that the sulphuric acid maturation-water leaching process was the most suitable. In-depth testing of the sulphuric acid-hydro leaching process also resulted in the optimum parameters of 1.5:1 acid to material ratio at 200°C for 1h and then leaching at 95°C for 2.5h at a solid to liquid ratio of 4:1. The clinker cycle validation test also provides an important reference for engineering applications. |
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