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Effect of preroasting on the preoxidation of vanadium in high-carbon stone coal
Yang, Xin Long1; Feng, Ya Li1; Li, Hao Ran2; Du, Zhu Wei2; Liu, Peng Wei1
2018-07-01
Source PublicationASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
ISSN1932-2135
Volume13Issue:4Pages:9
Abstract

The effect of preroasting on the preoxidation and sodium roasting of vanadium in high-carbon stone coal was investigated through the study of the change of the phase and valence distribution of vanadium. The result indicated that the ore should be subject to high-temperature preroasting treatment of approximately 800 degrees C for a certain time before sodium roasting to achieve a higher oxidation ratio of vanadium. During preroasting at 600 degrees C, the oxidation of the reducing component completed substantially, and the removal of hydroxyl in mica occurred. After preroasting at 800 degrees C, the reaction of hydroxyl removal of mica completed, and vanadium oxidation was not hindered. Preroasting at temperatures below 800 degrees C could only oxidize the V4+ of mica surface and could not oxidize the V3+ presented in the mica lattice, resulting in a small amount of V5+ appearing in the preroasted slag. The stage of carbon removal was controlled by chemical reaction and was mainly affected by temperature. When the preroasting temperature was reduced to below 600 degrees C, the oxidation time of carbon was found to be prolonged. The temperature was not sufficient to expand the spacing of the mica laminated structure, making it difficult to create favorable conditions for the oxidation of vanadium during the sodium roasting process.

KeywordCarbon Removal High-carbon Stone Coal Preoxidation Preroasting Vanadium Valence
DOI10.1002/apj.2216
Language英语
WOS KeywordExtracting Vanadium ; Technology ; Preconcentration ; Recovery ; Shale ; Slag
Funding ProjectChina Ocean Mineral Resources Research & Development Program[DY125-15-T-08] ; Major Science and Technology Program for Water Pollution Control and Treatment[2015ZX07205-003]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationChina Ocean Mineral Resources Research & Development Program ; Major Science and Technology Program for Water Pollution Control and Treatment
WOS IDWOS:000443379900013
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/25863
Collection中国科学院过程工程研究所
Corresponding AuthorFeng, Ya Li
Affiliation1.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Beijing, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Yang, Xin Long,Feng, Ya Li,Li, Hao Ran,et al. Effect of preroasting on the preoxidation of vanadium in high-carbon stone coal[J]. ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING,2018,13(4):9.
APA Yang, Xin Long,Feng, Ya Li,Li, Hao Ran,Du, Zhu Wei,&Liu, Peng Wei.(2018).Effect of preroasting on the preoxidation of vanadium in high-carbon stone coal.ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING,13(4),9.
MLA Yang, Xin Long,et al."Effect of preroasting on the preoxidation of vanadium in high-carbon stone coal".ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING 13.4(2018):9.
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