Comparison of chemical and biological leaching of sulfide tailings

Jari Aromaa (Corresponding Author), Jarno Mäkinen, Henri Vepsalainen, Tommi Kaartinen, Margareta Wahlström, Olof Forsen

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

Sulphidic tailings from Finnish Hitura nickel mine and Pyhäsalmi multi-metal mine were leached using sulphuric acid and bioleached. The aim was to recover minor amounts of valuable Cu, Ni,Zn and Mn. Both tailings consisted mainly of iron and magnesium-containing minerals and acid neutralizing minerals. The solution after chemical leaching tests contained mostly iron and magnesium, in
Hitura up to 11 g/dm3 Fe and 38 g/dm3 Mg while in Pyhäsalmi 8–9 g/dm3 Fe and 4 g/dm3 Mg. Amount of these metals was 20–100-fold larger than amount of valuable metals, which were typically 100-300 mg/dm3. Problems in chemical leaching were high consumption of acid and poor selectivity. Bioleaching using iron and sulphur oxidizing bacteria was more selective towards the valuable metals. Both in leaching and bioleaching the high concentration of iron and magnesium in solution will make metals recovery challenging.
Original languageEnglish
Pages (from-to)607-620
Number of pages13
JournalPhysicochemical Problems of Mineral Processing
Volume49
Issue number2
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

Fingerprint

Tailings
Sulfides
leaching
tailings
Leaching
sulfides
Iron
Metals
sulfide
Magnesium
Bioleaching
metal
magnesium
iron
metals
Acids
Minerals
Nickel mines
acids
Metal recovery

Keywords

  • sulfide tailings
  • chemical leaching
  • bioleaching
  • selectivity

Cite this

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title = "Comparison of chemical and biological leaching of sulfide tailings",
abstract = "Sulphidic tailings from Finnish Hitura nickel mine and Pyh{\"a}salmi multi-metal mine were leached using sulphuric acid and bioleached. The aim was to recover minor amounts of valuable Cu, Ni,Zn and Mn. Both tailings consisted mainly of iron and magnesium-containing minerals and acid neutralizing minerals. The solution after chemical leaching tests contained mostly iron and magnesium, inHitura up to 11 g/dm3 Fe and 38 g/dm3 Mg while in Pyh{\"a}salmi 8–9 g/dm3 Fe and 4 g/dm3 Mg. Amount of these metals was 20–100-fold larger than amount of valuable metals, which were typically 100-300 mg/dm3. Problems in chemical leaching were high consumption of acid and poor selectivity. Bioleaching using iron and sulphur oxidizing bacteria was more selective towards the valuable metals. Both in leaching and bioleaching the high concentration of iron and magnesium in solution will make metals recovery challenging.",
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author = "Jari Aromaa and Jarno M{\"a}kinen and Henri Vepsalainen and Tommi Kaartinen and Margareta Wahlstr{\"o}m and Olof Forsen",
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pages = "607--620",
journal = "Physicochemical Problems of Mineral Processing",
issn = "1643-1049",
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}

Comparison of chemical and biological leaching of sulfide tailings. / Aromaa, Jari (Corresponding Author); Mäkinen, Jarno; Vepsalainen, Henri; Kaartinen, Tommi; Wahlström, Margareta; Forsen, Olof.

In: Physicochemical Problems of Mineral Processing, Vol. 49, No. 2, 2013, p. 607-620.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Comparison of chemical and biological leaching of sulfide tailings

AU - Aromaa, Jari

AU - Mäkinen, Jarno

AU - Vepsalainen, Henri

AU - Kaartinen, Tommi

AU - Wahlström, Margareta

AU - Forsen, Olof

PY - 2013

Y1 - 2013

N2 - Sulphidic tailings from Finnish Hitura nickel mine and Pyhäsalmi multi-metal mine were leached using sulphuric acid and bioleached. The aim was to recover minor amounts of valuable Cu, Ni,Zn and Mn. Both tailings consisted mainly of iron and magnesium-containing minerals and acid neutralizing minerals. The solution after chemical leaching tests contained mostly iron and magnesium, inHitura up to 11 g/dm3 Fe and 38 g/dm3 Mg while in Pyhäsalmi 8–9 g/dm3 Fe and 4 g/dm3 Mg. Amount of these metals was 20–100-fold larger than amount of valuable metals, which were typically 100-300 mg/dm3. Problems in chemical leaching were high consumption of acid and poor selectivity. Bioleaching using iron and sulphur oxidizing bacteria was more selective towards the valuable metals. Both in leaching and bioleaching the high concentration of iron and magnesium in solution will make metals recovery challenging.

AB - Sulphidic tailings from Finnish Hitura nickel mine and Pyhäsalmi multi-metal mine were leached using sulphuric acid and bioleached. The aim was to recover minor amounts of valuable Cu, Ni,Zn and Mn. Both tailings consisted mainly of iron and magnesium-containing minerals and acid neutralizing minerals. The solution after chemical leaching tests contained mostly iron and magnesium, inHitura up to 11 g/dm3 Fe and 38 g/dm3 Mg while in Pyhäsalmi 8–9 g/dm3 Fe and 4 g/dm3 Mg. Amount of these metals was 20–100-fold larger than amount of valuable metals, which were typically 100-300 mg/dm3. Problems in chemical leaching were high consumption of acid and poor selectivity. Bioleaching using iron and sulphur oxidizing bacteria was more selective towards the valuable metals. Both in leaching and bioleaching the high concentration of iron and magnesium in solution will make metals recovery challenging.

KW - sulfide tailings

KW - chemical leaching

KW - bioleaching

KW - selectivity

U2 - 10.5277/ppmp130220

DO - 10.5277/ppmp130220

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JO - Physicochemical Problems of Mineral Processing

JF - Physicochemical Problems of Mineral Processing

SN - 1643-1049

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ER -