EFFECT OF INTERGROWN PARTICLE LIBERATION ON DIFFICULT-TO-SEPARATE COKING COAL FLOTATION

被引：13

作者：

Gui, Xiahui ^{[1
]}

Liu, Jiongtian ^{[1
]}

Cao, Yijun ^{[1
]}

Xing, Yaowen ^{[2
]}

Deng, Yangyang ^{[2
]}

Li, Shulei ^{[2
]}

机构：

[1] Chinese Natl Engn Res Ctr Coal Preparat & Purific, Xuzhou 221116, Jiangsu, Peoples R China

[2] China Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou 221116, Jiangsu, Peoples R China

来源：

PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING | 2016年 / 52卷 / 01期

关键词：

liberation; particle size; coking coal; hydrophobicity; SIZE; PERFORMANCE;

D O I：

10.5277/ppmp160124

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Flotation tests with intergrown particle liberation were conducted to explore a separation method of difficult-to-separate coking coal from the Tangshan Kailuan mine in China. The particle size distribution, density and coal petrography were investigated. The difficult-to-separate coking coal sample resulted in intergrown particles, such as non-liberated coal and rocks. Thus, intergrown coal particle liberation and re-separation tests were conducted. The results showed that grinding time had a great effect on the flotation performance. Grinding prompted coal to dissociate and improve the surface hydrophobic properties of minerals. However, heterogeneous fine silt covered the surface of coal particles when coal was ground too long. The inorganic mineral particles were over-ground and reduced the contact angle of coal. The results of coal rock dissociation and laboratory re-separation tests showed that clean coal combustible recovery increased through intergrown particle liberation and re-separation.

引用

页码：279 / 294

页数：16

共 22 条

[1]

Study on Kinetic Modelling for Fine Coal Flotation [J].

Cheng, G. ;

Ma, L. Q. ;

Gui, X. H. ;

Liu, J. T. ;

Wang, Y. T. .

INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION, 2013, 33 (01) :12-25

[2]

Du M. H., 2006, COAL QUALITY TECHNOL, V6, P1

[3]

Fu X.H., 1996, Journal of China University of Mining & Technology, V25, P57

[4]

Storage of small samples of coking coal for thermal rheological tests [J].

Giroux, L ;

Kolijn, CJ ;

Pichler, FS .

FUEL PROCESSING TECHNOLOGY, 2006, 87 (06) :547-561

[5]

Gui X. H., 2012, 26 INT MIN PROC C NE, P1751

[6]

Effects of energy consumption on the separation performance of fine coal flotation [J].

Gui, Xiahui ;

Cheng, Gan ;

Liu, Jiongtian ;

Cao, Yijun ;

Li, Shulei ;

He, Qiongqiong .

FUEL PROCESSING TECHNOLOGY, 2013, 115 :192-200

[7]

AN EVALUATION OF THE ROLE OF PARTICLE-SIZE IN THE FLOTATION OF COAL USING DIFFERENT CELL TECHNOLOGIES [J].

HARRIS, MC ;

FRANZIDIS, JP ;

OCONNOR, CT ;

STONESTREET, P .

MINERALS ENGINEERING, 1992, 5 (10-12) :1225-1238

[8]

HU Z. B., 2011, COAL PREPARATION TEC, V3, P4

[9]

Comparative study of the performance of conventional and column flotation when treating coking coal fines [J].

Jena, M. S. ;

Biswal, S. K. ;

Das, S. P. ;

Reddy, P. S. R. .

FUEL PROCESSING TECHNOLOGY, 2008, 89 (12) :1409-1415

[10]

Prediction of coal response to froth flotation based on coal analysis using regression and artificial neural network [J].

Jorjani, E. ;

Poorali, H. Asadollahi ;

Sam, A. ;

Chelgani, S. Chehreh ;

Mesroghli, Sh. ;

Shayestehfar, M. R. .

MINERALS ENGINEERING, 2009, 22 (11) :970-976

← 1 2 3 →