TechnoRep - Repozitorijum Tehnološko-metalurškog fakulteta
Repozitorijum Tehnološko-metalurškog fakulteta
    • English
    • Српски
    • Српски (Serbia)
  • Srpski (latinica) 
    • Engleski
    • Srpski (ćirilica)
    • Srpski (latinica)
  • Prijava
Pregled zapisa 
  •   TechnoRep
  • Tehnološko-metalurški fakultet
  • Radovi istraživača / Researchers’ publications (TMF)
  • Pregled zapisa
  •   TechnoRep
  • Tehnološko-metalurški fakultet
  • Radovi istraživača / Researchers’ publications (TMF)
  • Pregled zapisa
JavaScript is disabled for your browser. Some features of this site may not work without it.

Effects of structural and textural grain characteristics on leaching of sulphide minerals from a polymetallic concentrate by sodium nitrate and sulphuric acid solution

Thumbnail
2017
0367-598X1700006S.pdf (1.822Mb)
Autori
Sokić, Miroslav
Stojanović, Jovica
Marković, Branislav
Bugarčić, Mladen
Štrbac, Nada
Kamberović, Željko
Manojlović, Vaso
Članak u časopisu (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentu
Apstrakt
In this paper, the influence of structural and textural characteristics of sulfide minerals on their leaching from a polymetallic concentrate by sulfuric acid and sodium nitrate solution is presented. The starting material was Pb-Zn-Cu sulphide polymetallic concentrate enriched during the flotation of a polymetallic ore in the "Rudnik" flotation plant (Rudnik - Serbia). Leaching experiments were carried out in a closed glass reactor, which provides stable hermetic conditions and allows heating at constant temperature. Chemical, XRD, qualitative and quantitative microscopic and SEM/EDX analyses were used to characterizes samples of the polymetallic concentrate and leach residue. It was determined that chalcopyrite, sphalerite, galena, pyrrhotite and quartz were present in the polymetallic concentrate. The content of sulphide minerals was 69.5%, of which 60.9% occurred as liberated grains: 88.3% of chalcopyrite, 59.3% of sphalerite, 25.1% of galena and 51.6% of pirrhotite. The rest of ch...alcopyrite, sphalerite, galena and pirrhotite grains were in the forms of inclusions, impregnations, and simple and complex intergrowths. During the leaching process by sodium nitrate and sulphuric acid solution, it was shown previously that the leaching rate of sulphide minerals decreased with time while a part of the sulphide minerals remained in the leach residue. After leaching at 80 degrees C for 120 min, the yields were 69.8, 82.7 and 67.1% for Cu, Zn and Fe, respectively. Lead, in the form of insoluble anglesite, remained in the leach residue. In addition to the anglesite, unleached sulfide minerals and quartz, elemental sulfur was found in the solid residue. The content of sulphide minerals was 35% of which 33.7% minerals occur independently. In specific, 54.7% of chalcopyrite, 31.9% of sphalerite, 8.2% of galena and 37.6% of pyrrhotite appear as separate grains with highly corroded surfaces. Therefore, the structural assembly of sulphide grains in the polymetallic concentrate is favourable and it is not the reason for the observed decrease in the leaching rate in the final process stages. The obtained findings may be explained by the presence of elemental sulphur that is formed during the reaction and precipitated at the grain surfaces, thus creating a diffusion barrier for the leach solution.

Ključne reči:
Polymetallic concentrate / Structural characteristics of sulphide minerals / Leaching
Izvor:
Hemijska industrija, 2017, 71, 6, 461-469
Izdavač:
  • Savez hemijskih inženjera, Beograd
Finansiranje / projekti:
  • Razvoj tehnoloških procesa prerade nestandardnih koncentrata bakra u cilju optimizacije emisije zagađujućih materija (RS-34023)

DOI: 10.2298/HEMIND161130006S

ISSN: 0367-598X

WoS: 000419973400001

Scopus: 2-s2.0-85044390257
[ Google Scholar ]
2
1
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3654
Kolekcije
  • Radovi istraživača / Researchers’ publications (TMF)
Institucija/grupa
Tehnološko-metalurški fakultet
TY  - JOUR
AU  - Sokić, Miroslav
AU  - Stojanović, Jovica
AU  - Marković, Branislav
AU  - Bugarčić, Mladen
AU  - Štrbac, Nada
AU  - Kamberović, Željko
AU  - Manojlović, Vaso
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3654
AB  - In this paper, the influence of structural and textural characteristics of sulfide minerals on their leaching from a polymetallic concentrate by sulfuric acid and sodium nitrate solution is presented. The starting material was Pb-Zn-Cu sulphide polymetallic concentrate enriched during the flotation of a polymetallic ore in the "Rudnik" flotation plant (Rudnik - Serbia). Leaching experiments were carried out in a closed glass reactor, which provides stable hermetic conditions and allows heating at constant temperature. Chemical, XRD, qualitative and quantitative microscopic and SEM/EDX analyses were used to characterizes samples of the polymetallic concentrate and leach residue. It was determined that chalcopyrite, sphalerite, galena, pyrrhotite and quartz were present in the polymetallic concentrate. The content of sulphide minerals was 69.5%, of which 60.9% occurred as liberated grains: 88.3% of chalcopyrite, 59.3% of sphalerite, 25.1% of galena and 51.6% of pirrhotite. The rest of chalcopyrite, sphalerite, galena and pirrhotite grains were in the forms of inclusions, impregnations, and simple and complex intergrowths. During the leaching process by sodium nitrate and sulphuric acid solution, it was shown previously that the leaching rate of sulphide minerals decreased with time while a part of the sulphide minerals remained in the leach residue. After leaching at 80 degrees C for 120 min, the yields were 69.8, 82.7 and 67.1% for Cu, Zn and Fe, respectively. Lead, in the form of insoluble anglesite, remained in the leach residue. In addition to the anglesite, unleached sulfide minerals and quartz, elemental sulfur was found in the solid residue. The content of sulphide minerals was 35% of which 33.7% minerals occur independently. In specific, 54.7% of chalcopyrite, 31.9% of sphalerite, 8.2% of galena and 37.6% of pyrrhotite appear as separate grains with highly corroded surfaces. Therefore, the structural assembly of sulphide grains in the polymetallic concentrate is favourable and it is not the reason for the observed decrease in the leaching rate in the final process stages. The obtained findings may be explained by the presence of elemental sulphur that is formed during the reaction and precipitated at the grain surfaces, thus creating a diffusion barrier for the leach solution.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska industrija
T1  - Effects of structural and textural grain characteristics on leaching of sulphide minerals from a polymetallic concentrate by sodium nitrate and sulphuric acid solution
EP  - 469
IS  - 6
SP  - 461
VL  - 71
DO  - 10.2298/HEMIND161130006S
ER  - 
@article{
author = "Sokić, Miroslav and Stojanović, Jovica and Marković, Branislav and Bugarčić, Mladen and Štrbac, Nada and Kamberović, Željko and Manojlović, Vaso",
year = "2017",
abstract = "In this paper, the influence of structural and textural characteristics of sulfide minerals on their leaching from a polymetallic concentrate by sulfuric acid and sodium nitrate solution is presented. The starting material was Pb-Zn-Cu sulphide polymetallic concentrate enriched during the flotation of a polymetallic ore in the "Rudnik" flotation plant (Rudnik - Serbia). Leaching experiments were carried out in a closed glass reactor, which provides stable hermetic conditions and allows heating at constant temperature. Chemical, XRD, qualitative and quantitative microscopic and SEM/EDX analyses were used to characterizes samples of the polymetallic concentrate and leach residue. It was determined that chalcopyrite, sphalerite, galena, pyrrhotite and quartz were present in the polymetallic concentrate. The content of sulphide minerals was 69.5%, of which 60.9% occurred as liberated grains: 88.3% of chalcopyrite, 59.3% of sphalerite, 25.1% of galena and 51.6% of pirrhotite. The rest of chalcopyrite, sphalerite, galena and pirrhotite grains were in the forms of inclusions, impregnations, and simple and complex intergrowths. During the leaching process by sodium nitrate and sulphuric acid solution, it was shown previously that the leaching rate of sulphide minerals decreased with time while a part of the sulphide minerals remained in the leach residue. After leaching at 80 degrees C for 120 min, the yields were 69.8, 82.7 and 67.1% for Cu, Zn and Fe, respectively. Lead, in the form of insoluble anglesite, remained in the leach residue. In addition to the anglesite, unleached sulfide minerals and quartz, elemental sulfur was found in the solid residue. The content of sulphide minerals was 35% of which 33.7% minerals occur independently. In specific, 54.7% of chalcopyrite, 31.9% of sphalerite, 8.2% of galena and 37.6% of pyrrhotite appear as separate grains with highly corroded surfaces. Therefore, the structural assembly of sulphide grains in the polymetallic concentrate is favourable and it is not the reason for the observed decrease in the leaching rate in the final process stages. The obtained findings may be explained by the presence of elemental sulphur that is formed during the reaction and precipitated at the grain surfaces, thus creating a diffusion barrier for the leach solution.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska industrija",
title = "Effects of structural and textural grain characteristics on leaching of sulphide minerals from a polymetallic concentrate by sodium nitrate and sulphuric acid solution",
pages = "469-461",
number = "6",
volume = "71",
doi = "10.2298/HEMIND161130006S"
}
Sokić, M., Stojanović, J., Marković, B., Bugarčić, M., Štrbac, N., Kamberović, Ž.,& Manojlović, V.. (2017). Effects of structural and textural grain characteristics on leaching of sulphide minerals from a polymetallic concentrate by sodium nitrate and sulphuric acid solution. in Hemijska industrija
Savez hemijskih inženjera, Beograd., 71(6), 461-469.
https://doi.org/10.2298/HEMIND161130006S
Sokić M, Stojanović J, Marković B, Bugarčić M, Štrbac N, Kamberović Ž, Manojlović V. Effects of structural and textural grain characteristics on leaching of sulphide minerals from a polymetallic concentrate by sodium nitrate and sulphuric acid solution. in Hemijska industrija. 2017;71(6):461-469.
doi:10.2298/HEMIND161130006S .
Sokić, Miroslav, Stojanović, Jovica, Marković, Branislav, Bugarčić, Mladen, Štrbac, Nada, Kamberović, Željko, Manojlović, Vaso, "Effects of structural and textural grain characteristics on leaching of sulphide minerals from a polymetallic concentrate by sodium nitrate and sulphuric acid solution" in Hemijska industrija, 71, no. 6 (2017):461-469,
https://doi.org/10.2298/HEMIND161130006S . .

DSpace software copyright © 2002-2015  DuraSpace
O repozitorijumu TechnoRep | Pošaljite zapažanja

OpenAIRERCUB
 

 

Kompletan repozitorijumInstitucije/grupeAutoriNasloviTemeOva institucijaAutoriNasloviTeme

Statistika

Pregled statistika

DSpace software copyright © 2002-2015  DuraSpace
O repozitorijumu TechnoRep | Pošaljite zapažanja

OpenAIRERCUB