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2008•The Chinese Journal of Nonferrous MetalsRequires access

Effect of microwave roasting on vanadium extraction from stone coal

Sen Xie

Open publisher page 8 citations

Abstract

Comparison tests of microwave roasting and conventional roasting for stone coal were carried out to investigate the effects of roasting temperature,roasting time and roasting additive dosage on vanadium extraction.The results show that V2O5 leaching rate is more than 64.1% when the test sample is roasted by microwave at 700 ℃ for 60 min,with additive Na2CO3 dosage of 6%.The size analysis indicates that the size fraction of 0.074 mm particles increases more than 10.0% after the sample is roasted by microwave at 700 ℃ fo r 120 min.A disruption model of sample in microwave roasting process was suggested,by which the reason for the improvement of V2O5 leaching rate can be explained.

About this research paper

What this paper is about

Comparison tests of microwave roasting and conventional roasting for stone coal were carried out to investigate the effects of roasting temperature,roasting time and roasting additive dosage on vanadium extraction.The results show that V2O5 leaching rate is more than 64.1% when the test sample is roasted by microwave at 700 ℃ for 60 min,with additive Na2CO3 dosage of 6%.The size analysis indicates that the size fraction of 0.074 mm particles increases more than 10.0% after the sample is roasted by microwave at 700 ℃ fo r 120 min.A disruption model of sample in microwave roasting process was suggested,by which the reason for the improvement of V2O5 leaching rate can be explained.

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OpenAlex reports 8 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

Comparison tests of microwave roasting and conventional roasting for stone coal were carried out to investigate the effects of roasting temperature,roasting time and roasting additive dosage on vanadium extraction.The results show that V2O5 leaching rate is more than 64.1% when the test sample is roasted by microwave at 700 ℃ for 60 min,with additive Na2CO3 dosage of 6%.The size analysis indicates that the size fraction of 0.074 mm particles increases more than 10.0% after the sample is roasted by microwave at 700 ℃ fo r 120 min.A disruption model of sample in microwave roasting process was suggested,by which the reason for the improvement of V2O5 leaching rate can be explained.

Key concepts: Roasting, Microwave, Materials science, Leaching (pedology), Vanadium, Metallurgy, Coal, Extraction (chemistry)

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