Effective Beneficiation of a Fine Coking Coal Using a Novel Flotation Scheme
被引:2
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作者:
Li, Shulei
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China Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou, Jiangsu, Peoples R China
Univ Alberta, Chem & Mat Engn, Edmonton, AB, Canada
Natl Engn Res Ctr Coal Preparat & Purificat, Xuzhou, Jiangsu, Peoples R ChinaChina Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou, Jiangsu, Peoples R China
Li, Shulei
[1
,2
,3
]
Gao, Lihui
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机构:
China Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou, Jiangsu, Peoples R China
Natl Engn Res Ctr Coal Preparat & Purificat, Xuzhou, Jiangsu, Peoples R ChinaChina Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou, Jiangsu, Peoples R China
Gao, Lihui
[1
,3
]
Cao, Yijun
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Natl Engn Res Ctr Coal Preparat & Purificat, Xuzhou, Jiangsu, Peoples R ChinaChina Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou, Jiangsu, Peoples R China
Cao, Yijun
[3
]
Gui, Xiahui
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Natl Engn Res Ctr Coal Preparat & Purificat, Xuzhou, Jiangsu, Peoples R ChinaChina Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou, Jiangsu, Peoples R China
Gui, Xiahui
[3
]
Tian, Quanzhi
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China Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou, Jiangsu, Peoples R China
Natl Engn Res Ctr Coal Preparat & Purificat, Xuzhou, Jiangsu, Peoples R ChinaChina Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou, Jiangsu, Peoples R China
Tian, Quanzhi
[1
,3
]
Zhang, Yi
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China Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou, Jiangsu, Peoples R China
Natl Engn Res Ctr Coal Preparat & Purificat, Xuzhou, Jiangsu, Peoples R ChinaChina Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou, Jiangsu, Peoples R China
Zhang, Yi
[1
,3
]
机构:
[1] China Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou, Jiangsu, Peoples R China
[2] Univ Alberta, Chem & Mat Engn, Edmonton, AB, Canada
[3] Natl Engn Res Ctr Coal Preparat & Purificat, Xuzhou, Jiangsu, Peoples R China
Effective flotation of fine coal remains challenging due to flotation inefficiency, of coarse, intergrowth particles, and contamination due to fine particles. In this article, a novel flotation scheme, named split-conditioning and bulk-flotation (SCBF), has been proposed to improve flotation efficiency of coarse and fine particles. The conditioning time and impellor speed of the flotation machine for coarse and fine particles were optimized using the nine well-planned orthogonal experiments. The results demonstrated that, by using the SCBF approach, an increase of 12.43% recovery for +0.074 mm particles and a decrease of 2.42% ash content in the -0.074 mm fractions were obtained compared to the conventional flotation. Based on the orthogonal experiments analysis, the optimal mixing conditions for +0.074 mm particles were an impellor speed of 2100 rpm and a conditioning time of 240 s, whereas, for the -0.074 mm size particles, an impellor speed of 2100 rpm and a conditioning time of 60 s were found to be the most important factors in SCBF. It was found that, for +0.074 mm particles, a higher impellor speed and a longer conditioning time improved the recovery of coarse particles, and a shorter conditioning time for the -0.074 mm particles reduced the contamination in clean coal.
机构:
CSIR-National Metallurgical Laboratory Madras Centre, CSIR Madras Complex, Taramani, ChennaiCSIR-National Metallurgical Laboratory Madras Centre, CSIR Madras Complex, Taramani, Chennai
Vasumathi N.
Vijaya Kumar T.V.
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CSIR-National Metallurgical Laboratory Madras Centre, CSIR Madras Complex, Taramani, ChennaiCSIR-National Metallurgical Laboratory Madras Centre, CSIR Madras Complex, Taramani, Chennai
Vijaya Kumar T.V.
Ratchambigai S.
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CSIR-National Metallurgical Laboratory Madras Centre, CSIR Madras Complex, Taramani, ChennaiCSIR-National Metallurgical Laboratory Madras Centre, CSIR Madras Complex, Taramani, Chennai
Ratchambigai S.
Subba Rao S.
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CSIR-National Metallurgical Laboratory Madras Centre, CSIR Madras Complex, Taramani, ChennaiCSIR-National Metallurgical Laboratory Madras Centre, CSIR Madras Complex, Taramani, Chennai
Subba Rao S.
Prabhakar S.
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机构:
CSIR-National Metallurgical Laboratory Madras Centre, CSIR Madras Complex, Taramani, ChennaiCSIR-National Metallurgical Laboratory Madras Centre, CSIR Madras Complex, Taramani, Chennai
Prabhakar S.
Bhaskar Raju G.
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机构:
CSIR-National Metallurgical Laboratory Madras Centre, CSIR Madras Complex, Taramani, ChennaiCSIR-National Metallurgical Laboratory Madras Centre, CSIR Madras Complex, Taramani, Chennai
机构:
School of Resources and Environmental Engineering, Shandong University of Technology, Zibo,Shandong,255000, China
National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou,Jiangsu,221116, ChinaSchool of Resources and Environmental Engineering, Shandong University of Technology, Zibo,Shandong,255000, China
Cao, Shiming
Cao, Yijun
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机构:
National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou,Jiangsu,221116, China
Henan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou,Henan,450001, ChinaSchool of Resources and Environmental Engineering, Shandong University of Technology, Zibo,Shandong,255000, China
Cao, Yijun
Ma, Zilong
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机构:
National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou,Jiangsu,221116, ChinaSchool of Resources and Environmental Engineering, Shandong University of Technology, Zibo,Shandong,255000, China
Ma, Zilong
Liao, Yinfei
论文数: 0引用数: 0
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机构:
National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology, Xuzhou,Jiangsu,221116, ChinaSchool of Resources and Environmental Engineering, Shandong University of Technology, Zibo,Shandong,255000, China
Liao, Yinfei
Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology,
2019,
48
(06):
: 1366
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1374