scholarly journals Fifty years of metallurgical production of zinc and cadmium in Serbia

Tehnika ◽  
2021 ◽  
Vol 76 (1) ◽  
pp. 32-38
Author(s):  
Branislav Nikolić ◽  
Miroslav Sokić ◽  
Željko Kamberović
Keyword(s):  
Work Life ◽  
Significant Decline ◽  
Metallurgical Production ◽  
Lead And Zinc ◽  
Metallurgical Processing ◽  
Zinc Production ◽  
The Town ◽  
Zinc Concentrate

Serbia has plenty of rich sites and active excavation mines of polymetallic ores of lead and zinc and centuries-old practice of their exploitation. In Serbia, the metallurgical processing of zinc concentrate started in 1955 at Zorka company in Šabac, while in the town of Kosovska Mitrovica, it began in 1967 at the Trepča combine. Several factors, including the fall o Yugoslaviam general societal circumstances and ownership transition, lead to a significant decline in production since 1992. It developed to the final halt of zinc's metallurgical production in 1999 at Trepča and in 2002 at Zorka. During the work-life o both production sites, since they opened till they closed, there were several reconstructions and capacity expansions, and all the while, the normalization and renewal of zinc production in Serbia hasn't been realized till 2021.

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.

Recovery Pb, Zn and S from a Chinese Lead-Zinc Mine Beneficiation Plant Tailing

2014 ◽  
Vol 997 ◽  
pp. 583-586
Author(s):  
Yong Chen ◽  
Yong Sheng Song ◽  
Gui Ying Zhou ◽  
Wen Juan Li
Keyword(s):  
Magnetic Susceptibility ◽  
Size Analysis ◽  
Mineral Analysis ◽  
Beneficiation Plant ◽  
Mineral Liberation ◽  
Lead And Zinc ◽  
Lead Zinc ◽  
Zinc Mine ◽  
Characterisation Techniques ◽  
Zinc Concentrate

Detailed characterisation and recovery of galena, sphalerite, and pyrrhotite from the beneficiation plant tailing of YouXi, China, was investigated. Different characterisation techniques viz. size analysis, chemical analysis, mineral analysis by Mineral Liberation Analyser（MLA）were carried out. Based on the appreciable differences in specific gravity, floatability and magnetic susceptibility between the desired lead, zinc, sulphur minerals and the gangue minerals, the flow sheets comprising desliming, flotation and magnetic separation, was used to recover galena, sphalerite, and pyrrhotite values. A lead and zinc concentrate of Pb 16.02%, Zn 35.1% and sulphur concentrate assays 35% S and 56% Fe can be produced from the tailing.

Study on Recovery of Lead-Zinc Tailing Ore by Electrochemical Flotation

2014 ◽  
Vol 675-677 ◽  
pp. 1451-1454 ◽  
Author(s):  
Gui Ying Zhou ◽  
Wen Juan Li ◽  
Yong Chen ◽  
Yong Sheng Song
Keyword(s):  
Potential Range ◽  
Low Grade ◽  
Separation Potential ◽  
Potential Control ◽  
Iron Sulfur ◽  
Lead And Zinc ◽  
High Oxidation ◽  
Lead Zinc ◽  
Pulp Potential ◽  
Zinc Concentrate

The tailing in a large lead-zinc-iron-sulfur multi-metallic mine has rich reservation in variety of metallic minerals. It has been difficult to recover because of all kinds of reasons. The challenges faced by lead-zinc ore beneficiation are, low grade and recovery of lead and zinc concentrate for fine disseminated grain size, high oxidation rate and close intergrowth. This paper presents a Pulp Potential Control Flotation by stages technique to improve the flotation performance of the lead-zinc ores. In the electrochemical potential controlling flotation processing, using DDTC as collector, the separation potential range of galena and sphalerite with pyrrhotite can be achieved. Flotation circuit of lead-zinc-silver tailing ore was achieved.

Processing of the lead-zinc ore from the Pavlovsk deposit

2020 ◽  
pp. 33-39
Author(s):  
S. S. Plyasovitsa ◽  
◽  
O. A. Kravtsova ◽  
N. V. Ivanova ◽  
I. Yu. Semenov ◽  
...  
Keyword(s):  
Metal Concentration ◽  
High Quality ◽  
Valuable Component ◽  
Flotation Process ◽  
X Ray ◽  
Lead And Zinc ◽  
Mineralogical Study ◽  
Lead Zinc ◽  
Zinc Concentrate

The authors carried out a mineralogical study and substantiated a concentration process developed for the lead-zinc ores of the Pavlovsk deposit. The concentration of the valuable component in each type of concentrate is determined by the amount of pyrite contained in the ore. It was established that the main loss of lead with flotation tailings is associated with oxidized phases, which are mainly found in fine material. Lead sulphides account for 30% of the entire waste tailings. Using the results of the mineralogical study, a flotation process was developed that involves a staged separation of commercial lead and zinc concentrates, as well as waste tailings. The obtained zinc concentrate has a consistently high quality of 57–58% with an 85–90% recovery. The metal concentration in the lead concentrate 1 is 45%, with the recovery being 43%. On the basis of the experimental results, the authors propose to use an X-ray radiometric separation method for coarse ore, which will help reduce the amount of incoming ore by 30% while minimizing the loss of lead and zinc.

Magnetic and Flotation: A Comprehensive Research for Recovery from Zinc Leach Residue

2011 ◽  
Vol 402 ◽  
pp. 510-513
Author(s):  
Chen Hu Zhang ◽  
Jian Hua Chen
Keyword(s):  
Zinc Sulfide ◽  
Leach Residue ◽  
Magnetic Separator ◽  
Lead And Zinc ◽  
Zinc Concentrate

According to the properties of the zinc leach residue, the recoveries of lead and zinc from residue have been studied in this paper. At first, ZnO.Fe2O3 was recovered by magnetic separator, and the grade of zinc concentrate is 14.89% and the recovery is 65%.Next step, zinc sulfide was recovered by flotation, and the grade of zinc concentrate is 29.65% and the recovery is 29.65%.The last, the lead residue was recovered by flotation and the grade of lead concentrate is 17.21% and the recovery is 56.37%. The technology is very effective to enrich value metals, and realize utilization of resource protecting the environment.

The Extraction Characteristic and Mineralogical Interpretation of Lead and Zinc Concentrate using Chloride Solvent

2013 ◽  
Vol 50 (4) ◽  
pp. 490-501
Author(s):  
Oh-hyung Han ◽  
Bong-ju Kim ◽  
Kang-hee Cho ◽  
Su-ji Oh ◽  
Nag-choul Choi ◽  
...  
Keyword(s):  
Lead And Zinc ◽  
Extraction Characteristic ◽  
Zinc Concentrate

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%.

scholarly journals A Research on Job Satisfaction and Quality of Work Life of Women Officials in it/ Ites Sectors with Special Reference to Bengaluru City (Karnataka Stae)

2019 ◽  
Vol 8 (12S2) ◽  
pp. 385-388
Keyword(s):  
Signs And Symptoms ◽  
Physical Activities ◽  
Work Life ◽  
Quality Of Work Life ◽  
Operating Life ◽  
Quality Of Work ◽  
Living Space ◽  
Commercial Enterprise ◽  
The Town

This paper is an exam of the consistence segment of business and the concept of running existence as an reputable noticed the woman within the discipline of advancement such data and organisation enabled (IT/ITES) component in Bengaluru, India. The ITES policy of Karnataka (2000) were anticipated in making Karnataka, normal ITES basis capital depending upon the place of work similarly because the potential of its pool of English speakme individuals. The town has infinite worldwide organizations (MNCs) with basic cutoff factors of the population works in these zones. This examination is the evaluation illuminating and signs and symptoms rely upon each the sizable and extra records. authentic real profile of women operating in IT/ITES in Bengaluru separated and the information is quantifiable try and renowned what delegates pleasant career has not anything to do with their inclination of work life. Estimations essentially within the idea of operating lifestyles, for instance, satisfactory reimbursement and practical, confirm and sound operating situations, probabilities to use and make as a long way as possible, the entryway open to continue with development and protection, social mixture within the commercial enterprise courting, constitutionalism in association paintings, paintings and best living space, social and working life precision likewise checked for this exam. The examination turned into guided by way of two studies questions. 1. What not unusual additives running lifestyles as located with the aid of the respondents? 2. If there's a connection between the idea of running existence and the pleasure of labor? assessment uncovered that there's a big connection among this action and the pride of work-lifestyles nature of women government within the districts referenced before. these revelations are the centrality of the principal definitive in mild of the fact that it allows the Human resources office for the assignment arrangement to enhance the operating life of the agent nature as for a diffusion within the delight of their physical activities. it is intended to help manufacturers with keeping apart systems inside the key problems of the operating surroundings to build up an approach for tending to this trouble..

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