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.

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.

Experimental Research of Mineral Processing on a Certain Lead-Zinc Oxidize Ore

2013 ◽  
Vol 669 ◽  
pp. 34-38
Author(s):  
Wen Deng ◽  
Hui Zhao ◽  
Deng Bang Jiang ◽  
Yao Zhong Lan
Keyword(s):  
Zinc Oxide ◽  
Experimental Research ◽  
Mineral Processing ◽  
Metallic Lead ◽  
Lead And Zinc ◽  
Lead Zinc ◽  
Zinc Concentrate

A certain multi-metallic lead-zinc oxide ore contains 1.09%Pb，8.39%Zn． The oxide rate of lead and zinc is 96.34% and 98.15% respectively．In order to recover valuable minerals from the oxide ore comprehensively, the authors adopted priority flotation processing in this experimental research. At last, the lead concentrate with Pb grade of 27.41% and the zinc concentrate with Zn grade of 24.14 % were respectively achieved. The overall recovery of lead was 93.66%，and the overall recovery of zinc was 90.74%.

Study on the New Flotation Agent Regime for Sichuan Lead-Zinc Mine

2012 ◽  
Vol 549 ◽  
pp. 513-518
Author(s):  
Xiao Lin Zhang ◽  
Jian Jun Fang ◽  
Dian Wen Liu ◽  
Shu Qin Zeng
Keyword(s):  
Zinc Oxide ◽  
Particle Distribution ◽  
Low Grade ◽  
Mineral Particle ◽  
Test Results ◽  
Lead And Zinc ◽  
High Efficient ◽  
Lead Zinc ◽  
Zinc Mine ◽  
Zinc Concentrate

Ore samples, collected from a lead-zinc oxide ore deposit in Sichuan province, China, are very difficult to treat with such characteristics as low grade, uneven mineral particle distribution and high containing of slime. It is very difficult to separate the lead minerals and zinc minerals, especially for the recovery of zinc oxide minerals. On the basis of flotation characteristics study to gangue and useful minerals, author studied flotation behavior of lead-zinc oxide ore with new collectors (KM21 and YO-1), and carried out the experiment on separating useful minerals from gangue minerals. Test results showed, a lead concentrate with a grade of 59.78 percent and a recovery of 86.49 percent and a zinc concentrate with a grade of 48.53 percent and a recovery of 84.92 percent were obtained from the crude ore with the oxidation rate of 74.34 percent and 89.30 percent of lead and zinc respectively, which realized the high efficient flotation separation of the refractory lead-zinc oxide ores.

Technology Study on Sichuan Refractory Lead-Zinc Ore

2012 ◽  
Vol 532-533 ◽  
pp. 115-120
Author(s):  
Shu Qin Zeng ◽  
Xiao Lin Zhang ◽  
Dian Wen Liu ◽  
Zhi Chong Wei
Keyword(s):  
Zinc Oxide ◽  
Study Author ◽  
Sichuan Province ◽  
Ore Deposits ◽  
Low Grade ◽  
Technology Study ◽  
Lead And Zinc ◽  
Lead Zinc ◽  
Zinc Concentrate

Rude ores, which were collected from two lead-zinc oxide ore deposits in Sichuan province, are very difficult to process with low grade and uneven mineral dissemination. It is very difficult to separate valuable minerals from gangue minerals, especially for the recovery of lead and zinc minerals. On the basis of mineral characteristic study, author studied flotation technology on lead-zinc mineral, and gained satisfactory concentrate indicator by stage-grinding: the lead concentrate with a grade of 52.45 percents and a recovery of 79.30 percents and the zinc concentrate with a grade of 35.26 percents and a recovery of 87.57 percents .

Study on Flotation of Lead-Zinc Oxide Ore from Yunnan

2013 ◽  
Vol 807-809 ◽  
pp. 2317-2322 ◽  
Author(s):  
Zhuo Yue Lan ◽  
Di Fei Li ◽  
Quan Jun Liu ◽  
Xiong Tong
Keyword(s):  
Zinc Oxide ◽  
Lead Oxide ◽  
Yunnan Province ◽  
Single Stage ◽  
Reverse Flotation ◽  
Two Stage ◽  
Test Study ◽  
Lead And Zinc ◽  
Lead Zinc ◽  
Zinc Concentrate

With regard to a deep-extend oxidized refractory lead-zinc ore from Yunnan province, containing 4.55% Pb and 17.09% Zn, a test study was carried out. By adopting single-stage roughing, single-stage scavenging, two-stage cleaning in the flotation of lead oxide ores, and single-stage cleaning, single-stage cleaning in the reverse flotation of zinc oxide ores, bulk concentrate of lead and zinc containing 36.60% Pb, 19.63% Zn with the Pb recovery of 82.45%, zinc concentrate containing 36.52% Zn, 0.44%Pb with the Zn recovery of 73.18% were obtained in the closed circuit experiment.

Separation Test of Refractory Lead-Zinc Ore from Myanmar

2012 ◽  
Vol 560-561 ◽  
pp. 447-455
Author(s):  
Ting Hu ◽  
Quan Jun Liu ◽  
Rong Dong Deng ◽  
Feng Hong Ye
Keyword(s):  
Oxidation Rate ◽  
Lead Oxide ◽  
Zinc Sulphide ◽  
Refractory Oxide ◽  
Lead Sulphide ◽  
Lead And Zinc ◽  
Lead Zinc ◽  
Separation Test ◽  
Pharmacy System ◽  
Zinc Concentrate

The paper recovered the lead and zinc from a refractory oxide lead-zinc ore. The grade of lead is 3.97%, with the oxidation rate of 50%.The grade of zinc is 3.37%, with the oxidation rate of 10%.The test made the lead-zinc sulphide flotation first, depressing the zinc mineral and floating the lead mineral, then selected the oxide of lead by sulfidation. The experiment got the best pharmacy system by comparing the species and amount of agent. As a result, the lead sulphide concentrate with a grade of 45.32% and the recovery of 44.86%, the zinc concentrate with a grade of 50.19% and the recovery of 81.23%, the lead oxide concentrate with a grade of 50.37% and the recovery of 45.64% were obtained. Three products had received good indicators, and the issue of lead and zinc interacted with each other had been resolved.

LENDING TO CORPORATE CLIENTS: STATUS AND PROSPECTS

2020 ◽  
Vol 1 (5) ◽  
pp. 98-101
Author(s):  
B. Kh. ALIEV ◽  
Keyword(s):  
Development Trends ◽  
Main Development ◽  
Corporate Clients

The article deals with the essence of corporate customer lending, analysis of the corporate customer lending system, as well as the main development trends and problems hindering the development of this sector.

scholarly journals Critical importance of pH and collector type on the flotation of sphalerite and galena from a low-grade lead–zinc ore

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Abdolrahim Foroutan ◽  
Majid Abbas Zadeh Haji Abadi ◽  
Yaser Kianinia ◽  
Mahdi Ghadiri
Keyword(s):  
Iron Ore ◽  
Low Grade ◽  
Zinc Recovery ◽  
Flotation Process ◽  
Ph Values ◽  
Lead And Zinc ◽  
Optimum Ph ◽  
Iron And Zinc ◽  
Lead Zinc ◽  
Zinc Concentrate

AbstractCollector type and pulp pH play an important role in the lead–zinc ore flotation process. In the current study, the effect of pulp pH and the collector type parameters on the galena and sphalerite flotation from a complex lead–zinc–iron ore was investigated. The ethyl xanthate and Aero 3418 collectors were used for lead flotation and Aero 3477 and amyl xanthate for zinc flotation. It was found that maximum lead grade could be achieved by using Aero 3418 as collector at pH 8. Also, iron and zinc recoveries and grades were increased in the lead concentrate at lower pH which caused zinc recovery reduction in the zinc concentrate and decrease the lead grade concentrate. Furthermore, the results showed that the maximum zinc grade and recovery of 42.9% and 76.7% were achieved at pH 6 in the presence of Aero 3477 as collector. For both collectors at pH 5, Zinc recovery was increased around 2–3%; however, the iron recovery was also increased at this pH which reduced the zinc concentrate quality. Finally, pH 8 and pH 6 were selected as optimum pH values for lead and zinc flotation circuits, respectively.

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