Experimental study on multistage continuous countercurrent decantation for vanadium containing leaching ore pulp

Fang Chen

doi:10.7513/j.issn.1004-7638.2023.01.005

Volume 44 Issue 1

Feb. 2023

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Fang Chen. Experimental study on multistage continuous countercurrent decantation for vanadium containing leaching ore pulp[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(1): 20-25. doi: 10.7513/j.issn.1004-7638.2023.01.005

Citation:

Fang Chen. Experimental study on multistage continuous countercurrent decantation for vanadium containing leaching ore pulp[J]. IRON STEEL VANADIUM TITANIUM, 2023, 44(1): 20-25. doi: 10.7513/j.issn.1004-7638.2023.01.005

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Experimental study on multistage continuous countercurrent decantation for vanadium containing leaching ore pulp

doi: 10.7513/j.issn.1004-7638.2023.01.005

Fang Chen

Changsha Research Institute of Mining and Metallurgy Co., Ltd., Changsha 410012, Hunan, China

Received Date: 2022-12-14
Available Online: 2023-03-20
Publish Date: 2023-02-28

Abstract

Abstract

After acid leaching of vanadium-bearing steel slag, the slurry is flocculated and concentrated to produce high-concentration leached slag. For subsequent recovery of vanadium ions, the multistage continuous countercurrent decantation is used to wash the leached residue. Through the flocculation sedimentation experiment, it is determined that the suitable flocculant for this pulp is APAM-625V, the dosage is 40 g/t, the optimal initial feed concentration is 10%, and the pulp underflow concentration after washing at each levels is 62%. Based on the principle of material balance of each washing stage in the washing process, the “first-order multivariate simultaneous equations” of the solution components of the vanadium slag leaching pulp in the washing process were calculated. The results of theoretical calculation show that the washing efficiency of vanadium ion is 97% under the condition of washing liquid-solid ratio of 1 and washing order of 5. The vanadium ion washing efficiency is 96.4% in the continuous countercurrent decantation experimentation research, which is basically consistent with the theoretical calculation results.
- vanadium extraction,
- vanadium-bearing steel slag,
- acid leaching liquid,
- continuous countercurrent decantation (CCD),
- thickener,
- washing efficiency

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References(6)

References

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