The isotopic constitution of sulphur in some stratiform lead-zinc sulphide ores

1966 ◽  
Vol 1 (1) ◽  
Author(s):  
R.L. Stanton ◽  
T.Athol Rafter
Keyword(s):  
Zinc Sulphide ◽  
Sulphide Ores ◽  
Lead Zinc ◽  
Isotopic Constitution

scholarly journals Assessment of Environmental Geochemistry of Lead-Zinc Mining at Ishiagu Area, Lower Benue Trough, Southeastern Nigeria

2020 ◽  
Vol 9 (1) ◽  
pp. 31 ◽  
Author(s):  
Odika, P.O. ◽  
Anike, O.L. ◽  
Onwuemesi, A.G. ◽  
Odika, N.F. ◽  
Ejeckam, R.B.
Keyword(s):  
Heavy Metals ◽  
Flow Direction ◽  
Environmental Geochemistry ◽  
Zinc Sulphide ◽  
Mining Activities ◽  
Southeastern Nigeria ◽  
Rock Types ◽  
Sulphide Ores ◽  
Lead Zinc ◽  
Concentration Levels

Mining activities have long been recognized as a major source of environmental contamination associated with heavy metals and metalloids. This study evaluated the relationship between the occurrence and mining of lead-zinc sulphide ores at Ishiagu, Nigeria, and heavy metal and metalloid contamination. A comparative study of two zones in the area, with and without mining activities was also made Water, soil, stream sediment and ore samples were analyzed, after acid digestion, using atomic absorption spectrophotometer (AAS).  The concentration levels of seven heavy metals and a metalloid namely Pb, Cu, Ni, Zn, Mn, Co, Cd and as were evaluated. While the highest concentration levels of As, Co and Pb (5.20 mg/l, 0.54 mg/l and 3.40 mg/l respectively) were found in water, those of Ni and Mn (2.26 mg/l and 5.48 mg/l respectively) occurred in soil.  For Cu and Zn, highest levels of concentration (2.80 mg/l and 0.41 mg/l respectively) occurred in stream sediments. The variations in the concentration levels of these elements in varying geologic media (soil, water and sediment) indicate influence of rock types, human activities and media physiochemical characteristics. Geostatistical analyses using QQPlot, semivariogram and kriging showed normal distribution of these elements. Distribution and dispersion patterns of the heavy metals indicated increase in concentration levels in the local stream flow direction. Pb, Cu, As, Cd, Mn, and Ni concentrations had reached pollutant levels in water based on WHO standards, while Zn level is below. Since the local people use untreated surface water and groundwater for drinking and other domestic purposes, soil for farming and lead for cosmetics, long term exposure poses significant health risk for humans, animals and plants.

Present Situation on Beneficiation of Lead-Zinc Oxide Ore

2012 ◽  
Vol 524-527 ◽  
pp. 1017-1022 ◽  
Author(s):  
Si Qing Liu ◽  
Wan Ping Wang ◽  
Bao Xu Song ◽  
Min Zhang
Keyword(s):  
Zinc Oxide ◽  
Present Situation ◽  
Zinc Sulphide ◽  
Development Trends ◽  
Zinc Oxides ◽  
Sulphide Ores ◽  
Lead And Zinc ◽  
Main Development ◽  
Lead Zinc ◽  
Future Work

With the exhausting of lead–zinc sulphide ores, the recovery of lead-zinc oxide ores becomes more and more significant. Extensive work has been carried out at home and abroad on the treatment of lead and zinc oxide ores in reagent scheme, flotation flowsheets, and joint process. Sliming is one of the main reasons why the lead-zinc oxides are difficult to recover. Eliminating the influence of slime and strengthening the study of joint process are the main development trends in future work.

Experimental Research on Rough Flotation of Lead in Bainiuchang Lead-Zinc Mines

2014 ◽  
Vol 926-930 ◽  
pp. 108-110
Author(s):  
Qi Fu Zhang ◽  
Zhuo Yue Lan ◽  
Xing Ke Shang
Keyword(s):  
Experimental Research ◽  
Recovery Rate ◽  
Zinc Sulfate ◽  
Zinc Sulphide ◽  
Sodium Hexametaphosphate ◽  
Sulphide Ore ◽  
Lead Recovery ◽  
Lead Zinc ◽  
Flotation Performance ◽  
Plant Practice

Containing Pb (1.09% ) and Zn (1.97%),the lead-zinc sulphide ore of Bainiuchang mine is a refractory resource in Yunnan Mengzi. The flotation performance of lead is ineffective in plant practice. This research is carried out to enhance the rough flotation performance of lead. With the dosage of lime and zinc sulfate as depressors, sodium hexametaphosphate as dispersant, and ethyl thio carbamate and MA as combined collector, the grinding fineness of 85% , a lead concentrate with lead grade of 17.68%, lead recovery rate of 75.59%, and zinc grade of 7.16% was obtained. The performance of rough flotation of lead is improved.

scholarly journals Dispersion effect on a lead–zinc sulphide ore flotation

2009 ◽  
Vol 22 (9-10) ◽  
pp. 752-758 ◽  
Author(s):  
M.O. Silvestre ◽  
C.A. Pereira ◽  
R. Galery ◽  
A.E.C. Peres
Keyword(s):  
Zinc Sulphide ◽  
Dispersion Effect ◽  
Sulphide Ore ◽  
Lead Zinc
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