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Author |
Benzaazoua, M.; Bussiere, B. |
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Title |
Desulphurization of tailings with low neutralizing potential; kinetic study and flotation modeling |
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Book Chapter |
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Year |
1999 |
Publication |
Sudbury '99; Mining and the environment II; conference proceedings |
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acid mine drainage chemical properties chemical reactions environmental analysis environmental effects experimental studies flotation geochemistry kinetics laboratory studies mathematical models neutralization pH pollution sulfur tailings 22 Environmental geology 02A General geochemistry |
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Abstract |
Environmental desulphurization is an attractive alternative for acid generating tailings management as demonstrated during the last few years. In fact, such process placed at the end of the primary treatment circuit allows to reduce greatly the amount of problematic tailings by concentrating the sulphidic fraction. Moreover, the desulphurized tailings (non-acid generating) have the geotechnical and environmental properties for being used as fine material in a cover with capillary barrier effects. To produce desulphurized tailings, non selective froth flotation is the most adapted method as shown in many previous works. Desulphurization level is fixed by tailings sulphur content (or sulphide content) and neutralization potential NP. The final residue should have enough NP to compensate for his acid generating potential AP. In this paper, the authors present the results of laboratory tests conducted in Denver cells for studying the sulphide flotation kinetics of four mine tailings which are characterized by a weak neutralization potential (under 37 kg CaCO (sub 3) /t). Tailings 1, 2, 3 and 4 contain respectively 5.27, 10, 4.25 and 16.9 sulphur Wt. %. Tailings 1 and 2 are cyanide free and are well floated at pH around 11 by using amyl xanthate as collector. Collector dosage was optimized for these tailings and the results show that Tailing 2 need more collector. However, Tailings 3 and 4, which come from a gold cyanidation process, could not provide good sulphide recovery with xanthate collector because of the pyrite depression. To overcome this problem, amine acetate was used successfully but induces important entrainment. The consumption of this collector was also optimized. The results of kinetic tests and collector dosage were combined and modeled to establish relationships which allow to estimate the desulphurization performances. |
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Goldsack, D.; Belzile, N.; Yearwood, P.; Hall, G. |
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0886670470 |
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Desulphurization of tailings with low neutralizing potential; kinetic study and flotation modeling; GeoRef; English; 2002-060841; Sudbury '99; Mining and the environment II--Sudbury '99; L'exploitation miniere et l'environnement, Sudbury, ON, Canada, Sept. 13-17, 1999 References: 26; illus. incl. 5 tables |
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CBU @ c.wolke @ 16572 |
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452 |
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Author |
Becker, G.; Wade, S.; Riggins, J.D.; Cullen, T.B.; Venn, C.; Hallen, C.P. |
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Title |
Effect of Bast Mine treatment discharge on Big Mine Run AMD and Mahanoy Creek in the Western Middle Anthracite Field of Pennsylvania |
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Journal Article |
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2005 |
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abandoned mines acid mine drainage anthracite Ashland Pennsylvania Bast Mine Big Mine Run coal coal fields coal mines Columbia County Pennsylvania discharge geochemistry hydrochemistry hydrology Mahanoy Creek mines Northumberland County Pennsylvania Pennsylvania pollution rivers and streams Schuylkill County Pennsylvania sedimentary rocks surface water United States water quality water treatment Western Middle Anthracite Field 22 Environmental geology 02A General geochemistry |
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Abstract |
The Bast Mine (reopened in 2001) and Big Mine are two anthracite coal mines near Ashland, PA, that were abandoned in the 1930's and that are now causing drastic and opposite effects on the water quality of the streams originating from them. To quantify these effects, multiple samples were taken at 5 different sites: 3 along Big Mine Run and 2 from Mahanoy Creek (1 upstream and 1 downstream of the confluence with Big Mine Run). At each site, one set of the samples was treated with nitric acid for metals survey, one set was acidified with sulfuric acid for nitrate preservation, one set was filtered for sulfate and phosphate tests, and one set was unaltered. Measurements of pH, TDS, dissolved oxygen, and temperature were made in the field. Alkalinity, acidity, hardness, nitrates, orthophosphates and sulfates were analyzed using Hach procedures. Selected metals (Fe, Ni, Mg, Ca, Cu, Zn, Hg, Pb) were analyzed utilizing flame atomic absorption spectroscopy. Drainage from the Bast Mine is actively treated with hydrated lime before the water is piped down to Big Mine Run. pH and alkalinity values were much higher at the outflow compared to those in the water with which it merged. The two waters could be visibly distinguished some distance downstream. pH values decreased, sulfate and dissolved iron increased and alkalinity was reduced to zero until the confluence with Mahanoy Creek. The high alkalinity, turbidity, TDS and calcium values in Mahanoy Creek were somewhat reduced downstream of the confluence with the much lower discharge Big Mine Run. |
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Abstracts with Programs - Geological Society of America |
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Geological Society of America, Northeastern Section, 40th annual meeting |
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2006-042616; Geological Society of America, Northeastern Section, 40th annual meeting, Saratoga Springs, NY, United States, March 14-16, 2005; GeoRef; English |
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CBU @ c.wolke @ 16455 |
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459 |
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Al-Abed, S.; Allen, D.; Bates, E.; Reisman, D. |
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Title |
Lime treatment lagoons technology for treating acid mine drainage from two mining sites |
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Journal Article |
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2002 |
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acid mine drainage; case studies; Copper Mine; drainage; geochemistry; heavy metals; hydrochemistry; Leviathan Mine; mining; Nevada; pH; pollutants; pollution; precipitation; remediation; runoff; surface water; Tennessee; United States; waste lagoons; water treatment 22 Environmental geology; 02B Hydrochemistry |
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Hardrock mining 2002; issues shaping the industry |
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2007-046170; Hardrock mining 2002; issues shaping the industry, Westminster, CO, United States, May 7-9, 2002 U. S. Environmental Protection Agency, Office of Research and Development, Washington, DC, United States; GeoRef; English |
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CBU @ c.wolke @ 5621 |
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487 |
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Haferkorn, B.; Mueller, M.; Zeh, E.; Benthaus, F.K.; Pester, L.; Lietzow, A.; Mansel, H.; Weber, H.; Franke, K.; Gelessius, G. |
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1999 |
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abandoned mines; Central Europe; coal; ecology; Europe; geochemistry; Germany; ground water; hydrochemistry; hydrologic cycle; hydrology; lacustrine environment; lignite; limnology; mine drainage; mines; mining; monographs; pH; quality; remediation; reservoirs; Saxonian Massif; Saxony Germany; Saxony-Anhalt Germany; sedimentary rocks; surface mining; surface water 21 Hydrogeology; 22 Environmental geology; 28B Economic geology, economics of nonmetal deposits |
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Lmbv |
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Berlin |
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Schaffung von Tagebauseen im mitteldeutschen Bergbaurevier; die Wiederherstellung eines sich selbst regulierenden Wasserhaushaltes in den Braunkohleabbaugebieten des Freistaates Sachsen (Nordwestsachsen), des Landes Sachsen-Anhalt und des Freistaates Thueringen. Creation of open-pit lakes in central Germany mining district; the reclamation of some self-regulating water balance in abandoned lignite regions of the Saxony Free States Northwest Saxony), of the Saxony-Anhalt state and Free States |
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Schaffung von Tagebauseen im mitteldeutschen Bergbaurevier; die Wiederherstellung eines sich selbst regulierenden Wasserhaushaltes in den Braunkohleabbaugebieten des Freistaates Sachsen (Nordwestsachsen), des Landes Sachsen-Anhalt und des Freistaates Thueringen. Creation of open-pit lakes in central Germany mining district; the reclamation of some self-regulating water balance in abandoned lignite regions of the Saxony Free States Northwest Saxony), of the Saxony-Anhalt state and Free States; 351547-1; GeoRef In Process; German; References: 33; illus. incl. sects., 14 plates, 13 tables, geol. sketch maps |
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CBU @ c.wolke @ 6100 |
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362 |
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Author |
Miller, S.D. |
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Title |
Overview of acid mine drainage issues and control strategies Remediation and management of degraded lands |
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Book Chapter |
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1999 |
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acid mine drainage; controls; decontamination; environmental analysis; environmental effects; geochemistry; ground water; land management; lime; oxidation; pH; pollutants; pollution; preventive measures; risk assessment; soils; sulfides; surface water; waste disposal; waste management 22, Environmental geology |
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Lewis Publishers |
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Boca Raton |
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Wong, M.H.; Wong, J.W.C.; Baker, A.J.M. |
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157504109x |
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Overview of acid mine drainage issues and control strategies Remediation and management of degraded lands; GeoRef; English; 2000-057936 |
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Call Number |
CBU @ c.wolke @ 5951 |
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298 |
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