A novel approach for pre-concentrating vanadium from stone coal ore

Yan, Baijun; Wang, Daya; Wu, Liushun; Dong, Yuan

doi:10.1016/j.mineng.2018.06.005

Cited by 56 publications

(14 citation statements)

References 24 publications

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“…According to our previous study [36,37], the vanadium in the shale is mainly located in the mica, and the vanadium in steelmaking slag exists in a glass phase and dicalcium silicate. In the process of roasting, mica in the shale first broke down into silicate and water.…”

Section: Theoretical Analysis Of V-concentrating 41 Phase Formationmentioning

confidence: 98%

Joint processing of V-bearing steelmaking slag and V-bearing black shale for vanadium and iron separation

Mei

Yan

et al. 2021

J min metall B Metall

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To recycle vanadium from V-bearing steelmaking slag and V-bearing black shale, the both were jointly roasted to generate vanadium-rich phase, and then vanadium was separated by magnetic separation in this study. The compositions of samples were determined by X-ray fluorescence meter and the phases in the samples were characterized using X-ray diffractometer. Experimental results showed that, with increasing the ratio of CaO content to SiO2content in the samples, the vanadium separation efficiency first decreased, increased, and then decreased again. With increasing roasting temperature from 1423 to 1623 K, the vanadium separation efficiency increased. With increasing roasting time from one hour to four hours, the vanadium separation efficiency increased. The optimum conditions for vanadium recycling are the basicity of 1.2, roasting temperature of 1623 K, and roasting time of 4 hours. Under this condition, separation efficiency of vanadium reaches 71.6%, and the concentrate contains 3.67% V2O5and 46.9% Fe2O3. A flow for joint processing of V-bearing steelmaking slag and V-bearing black shale was proposed, which involves vanadium separating, and tailings utilizing.

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Section: Theoretical Analysis Of V-concentrating 41 Phase Formationmentioning

confidence: 98%

Joint processing of V-bearing steelmaking slag and V-bearing black shale for vanadium and iron separation

Mei

Yan

et al. 2021

J min metall B Metall

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“…Flotation tests have also been proven to be able to reprocess waste tailings, which not only enabled the gold recovery rate to reach 4.7%, but also effectively reduced the production of acid mine drainage (AMD) (Abdelkrim et al 2019). At present, chemical methods occupy a dominant position in the process of leaching tailings, but chemical leaching is often costly, harsh reaction conditions, and easy to cause secondary pollution, thus researchers have turned their attention to metal extraction technology using microbial leaching (Yan et al 2018). Bioleaching technology has the advantages of energy saving and environmental protection, low investment, and can handle low-grade mineral resources that cannot be processed or difficult to process by traditional beneficiation methods, which has promising prospects in realizing tailings resource utilization (Panda et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Enhanced effect of biochar on leaching vanadium and copper from stone coal tailings by Thiobacillus ferrooxidans

Dong

Chong

Lin

2021

Environ Sci Pollut Res

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Among the many extraction technologies for recovering metal resources from tailings, bioleaching technology is gradually showing its momentum. In our research, the enhanced effect of biochar on the bioleaching of stone coal tailings by Thiobacillus ferrooxidans (T. ferrooxidans) has been explored. In the static bioleaching experiment for 10 days, the leaching rate of vanadium (V) and copper (Cu) increased by 26.8% and 21.0% respectively after adding 5 g/L biochar. The dynamic bioleaching experiment further verified that under the promotion of biochar, the 44 day cumulative leaching rate of V and Cu increased by 15.3% and 14.5%, respectively. The promoting effect of biochar on T. ferrooxidans was mainly reflected in two aspects. The unique porous structure of biochar created a microenvironment for free microorganisms for inhabitation, while storing abundant nutrients. Biochar can also act as an excellent electronic medium to promote electron transfer, improving the oxidation ability of T. ferrooxidans on Fe 2+ . Furthermore, the presence of biochar may effectively inhibit the formation of jarosite precipitation on tailings in bioleaching, thereby improving the dissolution of tailings and the release of metal elements. This study demonstrates that biochar-enhanced bioleaching may be an efficient and environmentally friendly method for recovering metal resources from tailings.

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“…One of the important characteristics of the primary black shale is that the majority of V mainly occurs in the structure of mica. [4][5][6] This type of primary black shale is also called mica type black shale.…”

Section: Introductionmentioning

confidence: 99%

Vanadium occupation and its leachability differences in trioctahedral and dioctahedral mica

et al. 2019

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A novel approach for pre-concentrating vanadium from stone coal ore

Cited by 56 publications

References 24 publications

Joint processing of V-bearing steelmaking slag and V-bearing black shale for vanadium and iron separation

Joint processing of V-bearing steelmaking slag and V-bearing black shale for vanadium and iron separation

Enhanced effect of biochar on leaching vanadium and copper from stone coal tailings by Thiobacillus ferrooxidans

Vanadium occupation and its leachability differences in trioctahedral and dioctahedral mica

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