DocumentCode
3345051
Title
Notice of Retraction
Pyrolysis Treatment of Chromite Ore Processing Residue with Waste Tyre
Author
Dalei Zhang ; Fan Qiao ; Qingyuan Guo ; Mou Lv ; Yingjie Sun
Author_Institution
Sch. of Environ. & Municipal Eng., Qingdao Technol. Univ., Qingdao, China
fYear
2011
fDate
10-12 May 2011
Firstpage
1
Lastpage
4
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Chromite Ore Processing Residue (COPR) is the byproduct of chromate production process, which contains a large amounts of Cr(VI). The present work developed a new technique to treat COPR, and the process involved mixing the COPR with waste tyre followed by pyrolysis. It was found that the reducing volatile fraction generated during pyrolysis of tyre was beneficial to Cr(VI) reduction. In the study, process variables, such as the amount of tyre added to COPR, heating temperature and particle size, were systematically varied, and their influences on the Cr(VI) reduction in COPR were all investigated. After pyrolysis, Cr(VI) decreased greatly, from 3400 for untreated COPR to less than 30 mg kg-1 for treated COPR at 600°C.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Chromite Ore Processing Residue (COPR) is the byproduct of chromate production process, which contains a large amounts of Cr(VI). The present work developed a new technique to treat COPR, and the process involved mixing the COPR with waste tyre followed by pyrolysis. It was found that the reducing volatile fraction generated during pyrolysis of tyre was beneficial to Cr(VI) reduction. In the study, process variables, such as the amount of tyre added to COPR, heating temperature and particle size, were systematically varied, and their influences on the Cr(VI) reduction in COPR were all investigated. After pyrolysis, Cr(VI) decreased greatly, from 3400 for untreated COPR to less than 30 mg kg-1 for treated COPR at 600°C.
Keywords
mineral processing; pyrolysis; waste handling; chromate production process; chromite ore processing residue; heating temperature; particle size; pyrolysis treatment; waste tyre; Chromium; Heating; Temperature; Tires; Volatile organic compounds;
fLanguage
English
Publisher
ieee
Conference_Titel
Bioinformatics and Biomedical Engineering, (iCBBE) 2011 5th International Conference on
Conference_Location
Wuhan
ISSN
2151-7614
Print_ISBN
978-1-4244-5088-6
Type
conf
DOI
10.1109/icbbe.2011.5781490
Filename
5781490
Link To Document