Study of gas holdup and pressure characteristics in a column flotation cell using coal

被引：31

作者：

Shukla, Satish Chandra ^{[1
]}

Kundu, Gautam ^{[1
]}

Mukherjee, Dibyendu ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem Engn, Kharagpur 721302, W Bengal, India

来源：

MINERALS ENGINEERING | 2010年 / 23卷 / 08期

关键词：

Coal; Column flotation; Froth flotation; Mineral processing; SIZE; PREDICTION; PARTICLES; PROFILES; BEHAVIOR; IMPACTS; SOLIDS;

D O I：

10.1016/j.mineng.2010.03.005

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Present work has been carried out to observe the effect of process variables (gas flow rate, feed flow rate, solid concentration and frother concentration) on gas holdup and pressure characteristics in flotation column using coal. Gas holdup has been estimated using phase separation method while piezometers have been used to obtain column's axial pressure profile. It was observed that gas holdup in collection zone was affected by both air as well as feed flow rates. Up to 6% change in gas holdup may occur when the feed flow rate changes from 1-2 cm/s. It was also observed that addition of coal decreased the gas holdup while addition of methyl isobutyl carbinol (MIBC) had opposite effect. Almost linear variation in columns axial pressure characteristics has been observed with gas flow rate. An empirical relationship between gas holdup in the flotation column with column's axial pressure difference was developed. (C) 2010 Published by Elsevier Ltd.

引用

页码：636 / 642

页数：7

共 24 条

[1] EFFECT OF SOLID PARTICLES ON GAS HOLDUP IN FLOTATION COLUMNS .1. MEASUREMENT [J].

BANISI, S ;

FINCH, JA ;

LAPLANTE, AR ;

WEBER, ME .

CHEMICAL ENGINEERING SCIENCE, 1995, 50 (14) :2329-2334

[2] Deinking of recycled pulps using column flotation: energy and environmental benefits [J].

Chaiarrekij, S ;

Dhingra, H ;

Ramarao, BV .

RESOURCES CONSERVATION AND RECYCLING, 2000, 28 (3-4) :219-226

[3] COLUMN FLOTATION OF VERY FINE PARTICLES [J].

ESPINOSAGOMEZ, R ;

FINCH, JA ;

JOHNSON, NW .

MINERALS ENGINEERING, 1988, 1 (01) :3-18

[4]

Finch J.A., 1990, COLUMN FLOTATION

[5] Gas dispersion properties: Bubble surface area flux and gas holdup [J].

Finch, JA ;

Xiao, J ;

Hardie, C ;

Gomez, CO .

MINERALS ENGINEERING, 2000, 13 (04) :365-372

[6] Health impacts of coal and coal use: possible solutions [J].

Finkelman, RB ;

Orem, W ;

Castranova, V ;

Tatu, CA ;

Belkin, HE ;

Zheng, BS ;

Lerch, HE ;

Maharaj, SV ;

Bates, AL .

INTERNATIONAL JOURNAL OF COAL GEOLOGY, 2002, 50 (1-4) :425-443

[7] Sources of air pollution due to coal mining and their impacts in Jharia coalfield [J].

Ghose, MK ;

Majee, SR .

ENVIRONMENT INTERNATIONAL, 2000, 26 (1-2) :81-85

[8] A novel flotation column for oily water cleanup [J].

Gu, XQ ;

Chiang, SH .

SEPARATION AND PURIFICATION TECHNOLOGY, 1999, 16 (03) :193-203

[9] EFFECT OF FINE SOLIDS AND FROTHER ON GAS HOLD-UP AND LIQUID-MIXING IN A FLOTATION COLUMN [J].

ITYOKUMBUL, MT ;

KOSARIC, N ;

BULANI, W .

MINERALS ENGINEERING, 1995, 8 (11) :1369-1380

[10] COLUMN FLOTATION OF TALC [J].

KHO, CJ ;

SOHN, HJ .

INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 1989, 27 (1-2) :157-167

← 1 2 3 →