Combination of viscosity regulator and frother to enhance low-rank coal flotation performance

被引：6

作者：

Wang, Shiwei ^{[1
]}

Tao, Xiuxiang ^{[1
]}

机构：

[1] China Univ Min & Technol, Sch Chem Engn & Technol, Key Lab Coal Proc & Efficient Utilizat, Minist Educ, Xuzhou 221116, Jiangsu, Peoples R China

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2017年 / 52卷 / 15期

基金：

中国国家自然科学基金;

关键词：

Flotation; frother; induction time; low-rank coal; viscosity regulator; SODIUM DODECYL-SULFATE; REVERSE FLOTATION; OXIDIZED COAL; SUBBITUMINOUS COAL; INDUCTION TIME; POLYACRYLAMIDE; SURFACTANTS; STABILITY; LIGNITE; HYDROPHOBICITY;

D O I：

10.1080/01496395.2017.1341531

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This study investigated the synergistic effect of viscosity regulators (polyethylene glycol, sodium carboxymethyl cellulose, and polyacrylamide) and frother (2-octanol) on upgrading the flotation performance of low-rank coal. The results of flotation tests were consistent with the analysis of induction time and supported by the results of SEM, viscosity, foaming ability, and foam layer stability. In the present work, it was observed that the highest combustible matter recovery was obtained by mixing the polyethylene glycol (PEG300) with 2-octanol, which increased from 32.9% to about 64.4% accompanied by a little increase of ash content (0.54%). Therefore, it demonstrated that the combination of PEG300 and 2-octanol provided the highest combustible matter recovery and better flotation selectivity.

引用

页码：2463 / 2472

页数：10

共 41 条

[1] A review of induction and attachment times of wetting thin films between air bubbles and particles and its relevance in the separation of particles by flotation [J].

Albijanic, Boris ;

Ozdemir, Orhan ;

Nguyen, Anh V. ;

Bradshaw, Dee .

ADVANCES IN COLLOID AND INTERFACE SCIENCE, 2010, 159 (01) :1-21

[2] INTERACTION OF DODECYLAMINE AND SODIUM DODECYL-SULFATE WITH A LOW-RANK BITUMINOUS COAL [J].

BUSTAMANTE, H ;

WOODS, G .

COLLOIDS AND SURFACES, 1984, 12 (3-4) :381-399

[3]

CHANDER S, 1994, MINER METALL PROC, V11, P55, DOI 10.1007/BF03403042

[4] XPS XAES STUDY OF CARBON-FIBERS DURING THERMAL ANNEALING UNDER UHV CONDITIONS [J].

DESIMONI, E ;

CASELLA, GI ;

SALVI, AM .

CARBON, 1992, 30 (04) :521-526

[5] Enhancement in hydrophobicity of low rank coal by surfactants - A critical overview [J].

Dey, Shobhana .

FUEL PROCESSING TECHNOLOGY, 2012, 94 (01) :151-158

[6] Coal reverse flotation. Part II: Cleaning of a subbituminous coal [J].

Ding, KJ ;

Laskowski, JS .

MINERALS ENGINEERING, 2006, 19 (01) :79-86

[7] ESCA INVESTIGATIONS ON SCHLEENHAIN LIGNITE LITHOTYPES AND THE HYDROGENATION RESIDUES [J].

FIEDLER, R ;

BENDLER, D .

FUEL, 1992, 71 (04) :381-388

[8]

Gong J., 2011, ROLE HIGH MOLECULAR

[9] Effects of physical environment on induction time of air-bitumen attachment [J].

Gu, GX ;

Xu, ZH ;

Nandakumar, K ;

Masliyah, J .

INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2003, 69 (1-4) :235-250

[10]

Harris G. H., 1995, COAL PREP, V16, P135, DOI DOI 10.1080/07349349508905248

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