Environmental remediation of sulfidic tailings with froth flotation: Reducing the consumption of additional resources by optimization of conditioning parameters and water recycling

Ted Nuorivaara, Anna Björkqvist, John Bacher, Rodrigo Serna-Guerrero (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The removal of sulfidic species in tailings using froth flotation is a promising approach to prevent phenomena such as acid mine drainage. However, flotation requires the consumption of reagents and water that represent additional expenses. Despite the strong interest of scientists and industry alike on tailings remediation, there is no study on the minimization of resource consumption to promote the implementation of desulfurization with froth flotation. Following a systematic analysis based on Design of Experiments (DoE), this work aims to determine the implications of a decrease in the consumption of flotation reagents and fresh water. It was found that: i) recovery of sulfidic species is strongly influenced by collector concentration and the use of a preliminary re-dispersion step; ii) higher frother concentrations have a negative impact on sulfur grade in the concentrate; and iii) the interactions between the conditioning variables hereby explored have no significant impact on flotation performance. Composition analysis showed that flotation further aids in the removal of hazardous species, such as As, Co and Zn. Finally, the use of recycled water appears possible since flotation performance remained unchanged over 10 flotation cycles, despite the observed accumulation of metallic ions and organic species in the process water.

Original languageEnglish
Pages (from-to)125-133
Number of pages9
JournalJournal of Environmental Management
Volume236
DOIs
Publication statusPublished - 15 Apr 2019
MoE publication typeNot Eligible

Fingerprint

Froth flotation
Water recycling
Tailings
Flotation
conditioning
tailings
remediation
recycling
resource
water
Water
Desulfurization
Remediation
Design of experiments
Drainage
Environmental Restoration and Remediation
consumption
flotation
parameter
acid mine drainage

Keywords

  • Acid mine drainage
  • Flotation
  • Mining waste remediation
  • Tailings
  • Water recirculation

Cite this

@article{b76b2b0d25a448d19234a139ef453d6e,
title = "Environmental remediation of sulfidic tailings with froth flotation: Reducing the consumption of additional resources by optimization of conditioning parameters and water recycling",
abstract = "The removal of sulfidic species in tailings using froth flotation is a promising approach to prevent phenomena such as acid mine drainage. However, flotation requires the consumption of reagents and water that represent additional expenses. Despite the strong interest of scientists and industry alike on tailings remediation, there is no study on the minimization of resource consumption to promote the implementation of desulfurization with froth flotation. Following a systematic analysis based on Design of Experiments (DoE), this work aims to determine the implications of a decrease in the consumption of flotation reagents and fresh water. It was found that: i) recovery of sulfidic species is strongly influenced by collector concentration and the use of a preliminary re-dispersion step; ii) higher frother concentrations have a negative impact on sulfur grade in the concentrate; and iii) the interactions between the conditioning variables hereby explored have no significant impact on flotation performance. Composition analysis showed that flotation further aids in the removal of hazardous species, such as As, Co and Zn. Finally, the use of recycled water appears possible since flotation performance remained unchanged over 10 flotation cycles, despite the observed accumulation of metallic ions and organic species in the process water.",
keywords = "Acid mine drainage, Flotation, Mining waste remediation, Tailings, Water recirculation",
author = "Ted Nuorivaara and Anna Bj{\"o}rkqvist and John Bacher and Rodrigo Serna-Guerrero",
year = "2019",
month = "4",
day = "15",
doi = "10.1016/j.jenvman.2019.01.107",
language = "English",
volume = "236",
pages = "125--133",
journal = "Journal of Environmental Management",
issn = "0301-4797",
publisher = "Academic Press",

}

Environmental remediation of sulfidic tailings with froth flotation : Reducing the consumption of additional resources by optimization of conditioning parameters and water recycling. / Nuorivaara, Ted; Björkqvist, Anna; Bacher, John; Serna-Guerrero, Rodrigo (Corresponding Author).

In: Journal of Environmental Management, Vol. 236, 15.04.2019, p. 125-133.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Environmental remediation of sulfidic tailings with froth flotation

T2 - Reducing the consumption of additional resources by optimization of conditioning parameters and water recycling

AU - Nuorivaara, Ted

AU - Björkqvist, Anna

AU - Bacher, John

AU - Serna-Guerrero, Rodrigo

PY - 2019/4/15

Y1 - 2019/4/15

N2 - The removal of sulfidic species in tailings using froth flotation is a promising approach to prevent phenomena such as acid mine drainage. However, flotation requires the consumption of reagents and water that represent additional expenses. Despite the strong interest of scientists and industry alike on tailings remediation, there is no study on the minimization of resource consumption to promote the implementation of desulfurization with froth flotation. Following a systematic analysis based on Design of Experiments (DoE), this work aims to determine the implications of a decrease in the consumption of flotation reagents and fresh water. It was found that: i) recovery of sulfidic species is strongly influenced by collector concentration and the use of a preliminary re-dispersion step; ii) higher frother concentrations have a negative impact on sulfur grade in the concentrate; and iii) the interactions between the conditioning variables hereby explored have no significant impact on flotation performance. Composition analysis showed that flotation further aids in the removal of hazardous species, such as As, Co and Zn. Finally, the use of recycled water appears possible since flotation performance remained unchanged over 10 flotation cycles, despite the observed accumulation of metallic ions and organic species in the process water.

AB - The removal of sulfidic species in tailings using froth flotation is a promising approach to prevent phenomena such as acid mine drainage. However, flotation requires the consumption of reagents and water that represent additional expenses. Despite the strong interest of scientists and industry alike on tailings remediation, there is no study on the minimization of resource consumption to promote the implementation of desulfurization with froth flotation. Following a systematic analysis based on Design of Experiments (DoE), this work aims to determine the implications of a decrease in the consumption of flotation reagents and fresh water. It was found that: i) recovery of sulfidic species is strongly influenced by collector concentration and the use of a preliminary re-dispersion step; ii) higher frother concentrations have a negative impact on sulfur grade in the concentrate; and iii) the interactions between the conditioning variables hereby explored have no significant impact on flotation performance. Composition analysis showed that flotation further aids in the removal of hazardous species, such as As, Co and Zn. Finally, the use of recycled water appears possible since flotation performance remained unchanged over 10 flotation cycles, despite the observed accumulation of metallic ions and organic species in the process water.

KW - Acid mine drainage

KW - Flotation

KW - Mining waste remediation

KW - Tailings

KW - Water recirculation

UR - http://www.scopus.com/inward/record.url?scp=85061326985&partnerID=8YFLogxK

U2 - 10.1016/j.jenvman.2019.01.107

DO - 10.1016/j.jenvman.2019.01.107

M3 - Article

AN - SCOPUS:85061326985

VL - 236

SP - 125

EP - 133

JO - Journal of Environmental Management

JF - Journal of Environmental Management

SN - 0301-4797

ER -