Enhanced ultrafine coal dewatering using flocculation filtration processes

D. Tao; J. G. Groppo; B. K. Parekh

doi:10.1016/S0892-6875(99)00162-4

Enhanced ultrafine coal dewatering using flocculation filtration processes

D. Tao, J. G. Groppo, B. K. Parekh

Research output: Contribution to journal › Article › peer-review

62 Scopus citations

Abstract

Ultrafine coal (-150 μm) can be effectively cleaned using advanced separation techniques such as column flotation, however, dewatering it to below 20 percent moisture level using the conventional dewatering techniques is difficult. A comparative flocculation filtration study was performed for enhancing dewatering of ultrafine coal using vacuum, hyperbaric, and centrifugal filters. The cationic and anionic flocculants were added into the slurry individually or in combinations. Vacuum filtration results showed that use of flocculants increased filtration rate by several times and/or substantially reduced cake moisture. Combined use of anionic and cationic flocculants showed further improvement. Addition of flocculants significantly increased filtration rate of hyperbaric filtration and reduced cake moisture in centrifugal filtration. Anionic flocculant was more effective in enhancing fine coal dewatering than cationic flocculant in vacuum filtration while cationic flocculant was more effective in high shear centrifugal filtration. A new approach on using flocculants in vacuum filtration is proposed for enhanced fine coal dewatering.

Original language	English
Pages (from-to)	163-171
Number of pages	9
Journal	Minerals Engineering
Volume	13
Issue number	2
DOIs	https://doi.org/10.1016/S0892-6875(99)00162-4
State	Published - Feb 2000

Bibliographical note

Funding Information:
The authors would like to thank Powell Mountain Coal Company for providing the clean coal slurry samples and Andritz Ruthner Inc. for conducting hyperbaric fdtration tests. Guidance and assistance provided by DOE project manager Carl Maronde is greatly appreciated. Financial support for the project was provided by the US Department of Energy under Contract No. DE-AC22-94PC94155.

Funding

The authors would like to thank Powell Mountain Coal Company for providing the clean coal slurry samples and Andritz Ruthner Inc. for conducting hyperbaric fdtration tests. Guidance and assistance provided by DOE project manager Carl Maronde is greatly appreciated. Financial support for the project was provided by the US Department of Energy under Contract No. DE-AC22-94PC94155.

Funders	Funder number
Michigan State University-U.S. Department of Energy (MSU-DOE) Plant Research Laboratory	DE-AC22-94PC94155

ASJC Scopus subject areas

Control and Systems Engineering
General Chemistry
Geotechnical Engineering and Engineering Geology
Mechanical Engineering

Access to Document

10.1016/S0892-6875(99)00162-4

Cite this

@article{6b74cfac049a4c689228dfa5ae315981,

title = "Enhanced ultrafine coal dewatering using flocculation filtration processes",

abstract = "Ultrafine coal (-150 μm) can be effectively cleaned using advanced separation techniques such as column flotation, however, dewatering it to below 20 percent moisture level using the conventional dewatering techniques is difficult. A comparative flocculation filtration study was performed for enhancing dewatering of ultrafine coal using vacuum, hyperbaric, and centrifugal filters. The cationic and anionic flocculants were added into the slurry individually or in combinations. Vacuum filtration results showed that use of flocculants increased filtration rate by several times and/or substantially reduced cake moisture. Combined use of anionic and cationic flocculants showed further improvement. Addition of flocculants significantly increased filtration rate of hyperbaric filtration and reduced cake moisture in centrifugal filtration. Anionic flocculant was more effective in enhancing fine coal dewatering than cationic flocculant in vacuum filtration while cationic flocculant was more effective in high shear centrifugal filtration. A new approach on using flocculants in vacuum filtration is proposed for enhanced fine coal dewatering.",

author = "D. Tao and Groppo, {J. G.} and Parekh, {B. K.}",

note = "Funding Information: The authors would like to thank Powell Mountain Coal Company for providing the clean coal slurry samples and Andritz Ruthner Inc. for conducting hyperbaric fdtration tests. Guidance and assistance provided by DOE project manager Carl Maronde is greatly appreciated. Financial support for the project was provided by the US Department of Energy under Contract No. DE-AC22-94PC94155.",

year = "2000",

month = feb,

doi = "10.1016/S0892-6875(99)00162-4",

language = "English",

volume = "13",

pages = "163--171",

number = "2",

}

TY - JOUR

T1 - Enhanced ultrafine coal dewatering using flocculation filtration processes

AU - Tao, D.

AU - Groppo, J. G.

AU - Parekh, B. K.

N1 - Funding Information: The authors would like to thank Powell Mountain Coal Company for providing the clean coal slurry samples and Andritz Ruthner Inc. for conducting hyperbaric fdtration tests. Guidance and assistance provided by DOE project manager Carl Maronde is greatly appreciated. Financial support for the project was provided by the US Department of Energy under Contract No. DE-AC22-94PC94155.

PY - 2000/2

Y1 - 2000/2

N2 - Ultrafine coal (-150 μm) can be effectively cleaned using advanced separation techniques such as column flotation, however, dewatering it to below 20 percent moisture level using the conventional dewatering techniques is difficult. A comparative flocculation filtration study was performed for enhancing dewatering of ultrafine coal using vacuum, hyperbaric, and centrifugal filters. The cationic and anionic flocculants were added into the slurry individually or in combinations. Vacuum filtration results showed that use of flocculants increased filtration rate by several times and/or substantially reduced cake moisture. Combined use of anionic and cationic flocculants showed further improvement. Addition of flocculants significantly increased filtration rate of hyperbaric filtration and reduced cake moisture in centrifugal filtration. Anionic flocculant was more effective in enhancing fine coal dewatering than cationic flocculant in vacuum filtration while cationic flocculant was more effective in high shear centrifugal filtration. A new approach on using flocculants in vacuum filtration is proposed for enhanced fine coal dewatering.

AB - Ultrafine coal (-150 μm) can be effectively cleaned using advanced separation techniques such as column flotation, however, dewatering it to below 20 percent moisture level using the conventional dewatering techniques is difficult. A comparative flocculation filtration study was performed for enhancing dewatering of ultrafine coal using vacuum, hyperbaric, and centrifugal filters. The cationic and anionic flocculants were added into the slurry individually or in combinations. Vacuum filtration results showed that use of flocculants increased filtration rate by several times and/or substantially reduced cake moisture. Combined use of anionic and cationic flocculants showed further improvement. Addition of flocculants significantly increased filtration rate of hyperbaric filtration and reduced cake moisture in centrifugal filtration. Anionic flocculant was more effective in enhancing fine coal dewatering than cationic flocculant in vacuum filtration while cationic flocculant was more effective in high shear centrifugal filtration. A new approach on using flocculants in vacuum filtration is proposed for enhanced fine coal dewatering.

UR - http://www.scopus.com/inward/record.url?scp=0034140463&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034140463&partnerID=8YFLogxK

U2 - 10.1016/S0892-6875(99)00162-4

DO - 10.1016/S0892-6875(99)00162-4

M3 - Article

AN - SCOPUS:0034140463

SN - 0892-6875

VL - 13

SP - 163

EP - 171

JO - Minerals Engineering

JF - Minerals Engineering

IS - 2

ER -

Enhanced ultrafine coal dewatering using flocculation filtration processes

Abstract

Bibliographical note

Funding

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this