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1

Froth stabilisation using nanoparticles in mineral flotation

Cilek E. C., Uysal K.

Physicochemical Problems of Mineral Processing

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2018

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Vol. 54, iss. 3

878--889

EN

In this study, three kinds of nanoparticles (SiO2, Fe2O3, and Al2O3) were used in the flotation of a sulphide ore to investigate the effects of nanoparticles on the froth stability and the flotation performance. The dynamic froth stability factor and the maximum froth depth were measured by using a non-overflowing flotation cell under various flotation conditions. The results were also related to the separation selectivity and efficiency of the flotation. The experimental results showed that the dynamic froth stability factor and the maximum froth depth can be increased 1.2-2 fold by using the Al2O3 nanoparticles. These increments led to significant improve in the froth recovery. In terms of the froth stability and the flotation performance, the Al2O3 nanomaterial was the best, followed by Fe2O3 and SiO2. In addition, the flotation recovery increased from 83 to 91%, and the grade of the concentrate increased from 44 to 60% by using the Al2O3 nanoparticles.

2

The possibilities of metal concentration decrease in acid mine drainage

Balintova M., Luptakova A., Junakova N., Macingova E.

Zeszyty Naukowe Politechniki Rzeszowskiej. Budownictwo i Inżynieria Środowiska

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2009

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z. 54 [266]

9-17

EN

Degradation of surface water quality that is in contact with acid mine drainage belongs to the serious environmental problems in Slovak Republic. Mainly abandoned sulphide mines produce AMD with high metal concentrations and low value of the pH (about 3-4) which has negative impact on water ecosystems. Nowadays treatment of AMD incIudes passive and active systems. While passive treatment systems don't require continuous chemical inputs and that take advantage of naturally occurring chemical and biological processes to clean contaminated mine waters, active treatment system involves controlled physical, chemical and biological methods often based on pH increasing and the recovery of precipitate metaIs from AMD sludge. The paper presents results of used selected physical-chemical and biological-chemical methods of AMD treatment for aluminium, copper, iron, manganese and zinc removal from acid mine water originated in mine Smolnik in Slovak Republic.

3

Perspektywy rozwoju produkcji miedzi rafinowanej metodą SX-EW na świecie

Lewicka E.

Gospodarka Surowcami Mineralnymi

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2002

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T. 18, z. 3

5-14

PL

Artykuł przedstawia zarys technologii SX-EW (solvent extraction-electrowinning), będącej jedną z kluczowych metod hydrometalurgicznych pozyskiwania miedzi. Omówiono jej podstawowe zalety w porównaniu z metodami klasycznej pirometalurgii. Przeanalizowano perspektywy rozwoju produkcji miedzi z SX-EW w świetle przesłanek technologicznych, ekonomicznych i środowiskowych, a także przedstawiono prognozy w tym zakresie. Wspomniano również o próbach zastosowania metod hydrometalurgicznych z użyciem różnych sposobów ługowania, podejmowanych przez jednostki badawcze w Polsce w celu poprawy efektywności odzysku metali z rud LGOM.

EN

The paper presents a short description of solvent-extraction/electrowinning process (SX-EW), as a crucial technology in hydro-metallurgical technologies for copper recovery. The major prospects for development of copper extraction by this method as an alternative for conventional smelting/refining have been discussed taking into account recent technological achievements, the bio-leaching in particular. The paper cites also a few examples of the use of leaching method, which were examined in Poland in the laboratory scale in the 1990s. However, the prospects for the method utilisation in the domestic copper industry seem to be doubtful in the near future.