Air Dispersion and Bubble Characteristics in a Downflow Flotation Column

被引：17

作者：

Zhu, Hongzheng ^{[1
,2
]}

Lopez Valdivieso, Alejandro ^{[2
]}

Zhu, Jinbo ^{[1
]}

Min, Fanfei ^{[1
]}

Song, Shaoxian ^{[3
]}

Corona Arroyo, Mario Alberto ^{[4
]}

机构：

[1] Anhui Univ Sci & Technol, Sch Mat Sci & Engn, Huainan 232001, Peoples R China

[2] Univ Autonoma San Luis Potosi, Inst Met, Surface Chem Lab, San Luis Potosi 78000, Mexico

[3] Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan, Hubei, Peoples R China

[4] Univ Guanajuato, Dept Minas Met & Geol, Div Ingn, Guanajuato, Mexico

来源：

MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW | 2019年 / 40卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Sauter mean diameter; aeration rate; DDA concentration; downflow flotation column; bubble; CRITICAL COALESCENCE CONCENTRATION; MASS-TRANSFER COEFFICIENT; GAS HOLDUP; MULTIPHASE FLOW; IMPELLER SPEED; ORE FLOTATION; SIZE; FROTHERS; PERFORMANCE; REACTOR;

D O I：

10.1080/08827508.2018.1556159

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Bubble Sauter mean diameter and aeration rate of a gas-liquid system in a laboratory downflow flotation column were explored. Both critical coalescence concentration and Sauter mean diameter decreased with increasing superficial liquid velocity, and also the Sauter mean diameter was found to obviously increase with the increase in the sampling height under low dodecylamine concentration. The aeration rate increased as the dodecylamine concentration increased at a constant valve opening degree and also linearly increased as superficial air velocity increased at a constant superficial liquid velocity of 11 cm/s. Compared to the superficial air velocity, the dodecylamine concentration was found to present a larger effect on the Sauter mean diameter but a smaller one on the aeration rate within the studied ranges of the dodecylamine concentration and superficial air velocity.

引用

页码：224 / 229

页数：6

共 50 条

[41] Bubble loading measurement in a continuous flotation column
Chegeni, Mohsen Hemmati
Abdollahy, Mahmoud
Khalesi, Mohammad Reza
[J]. MINERALS ENGINEERING, 2016, 85 : 49 - 54
[42] A study of the bubble properties in the column flotation system
Jung-Eun Lee
Woo-Sik Choi
Jae-Keun Lee
[J]. Korean Journal of Chemical Engineering, 2003, 20 : 942 - 949
[43] Heat Transfer Studies in Ejector-induced Downflow Bubble Column
Meshram, Rohit B.
Kundu, Gautam
Mukherjee, Dibyendu
[J]. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING, 2016, 14 (05) : 955 - 964
[44] Quality of mixing in a downflow bubble column based on information entropy theory
Manish, Prakash
Majumder, Subrata Kumar
[J]. CHEMICAL ENGINEERING SCIENCE, 2009, 64 (08) : 1798 - 1805
[45] Bubble size distribution and gas-liquid interfacial area in a modified downflow bubble column
Majumder, Subrata Kumar
Kundu, Gautam
Mukherjee, Dibyendu
[J]. CHEMICAL ENGINEERING JOURNAL, 2006, 122 (1-2) : 1 - 10
[46] Mixing mechanism in a modified co-current downflow bubble column
Majumder, SK
Kundu, G
Mukherjee, D
[J]. CHEMICAL ENGINEERING JOURNAL, 2005, 112 (1-3) : 45 - 55
[47] Effect of frothers and dodecylamine on bubble size and gas holdup in a downflow column
Corona-Arroyo, M. A.
Lopez-Valdivieso, A.
Laskowski, J. S.
Encinas-Oropesa, A.
[J]. MINERALS ENGINEERING, 2015, 81 : 109 - 115
[48] INFLUENCE OF OPERATING PARAMETERS ON THE PHASE INTERFACE IN BUBBLE COLUMN DOWNFLOW REACTORS
HERBRECHTSMEIER, P
SCHAFER, H
STEINER, R
[J]. CHEMIE INGENIEUR TECHNIK, 1984, 56 (05) : 402 - 403
[49] Bubble size distribution and gas-liquid interfacial area in a modified downflow bubble column
Majumder, Subrata Kumar
Kundu, Gautam
Mukherjee, Dibyendu
[J]. Chemical Engineering Journal, 2006, 122 (1-2): : 1 - 10
[50] A comparative study of gas holdup, bubble size distribution and interfacial area in a downflow bubble column
Mandal, A
Kundu, G
Mukherjee, D
[J]. CHEMICAL ENGINEERING RESEARCH & DESIGN, 2005, 83 (A4): : 423 - 428

← 1 2 3 4 5 →