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By-products from zinc hydrometallurgy are classified as hazardous waste with strong leaching toxicities. Even though numerous research papers are dedicated to valorizing valuable metals in it, the primary management route is still disposal or partial reuse, such as the Waelz process. Presented experimental research investigates possibilities of sulfidization and further processing as a technologically sustainable route for valuable metals valorization from non-standard jarosite-PbAg sludge. The comprehensive thermodynamic analysis was done by HSC Chemistry®, through optimizing process parameters, i.e., temperature, sulfur addition, and selection of possible additives. Technological possibility of magnetic separation, flotation, and smelting of sulfidized material was also investigated; the results were below the values that allow practical application, due to the obtained texture of sulfidized jarosite, which does not allow the liberation of minerals. Smelting tests were performed on sulfidized jarosite with sulfur and without and with carbon as additive. By smelting sulfidized jarosite-PbAg sludge with added carbon in sulfidization stage at 1375 °C, obtained products were matte, slag, raw lead, and dust in which base, critical, and slag forming components were valorized. Valuable metals were concentrated in smelting products so as to enable further processing, which also could be interesting in the case of treatment of complex, polymetallic, and refractory primary materials, which represent a significant contribution to the circular economy.
Željko Kamberović; Nataša Gajić; Marija Korać; Sanja Jevtić; Miroslav Sokić; Jovica Stojanović. Technologically Sustainable Route for Metals Valorization from Jarosite-PbAg Sludge. Minerals 2021, 11, 255 .
AMA StyleŽeljko Kamberović, Nataša Gajić, Marija Korać, Sanja Jevtić, Miroslav Sokić, Jovica Stojanović. Technologically Sustainable Route for Metals Valorization from Jarosite-PbAg Sludge. Minerals. 2021; 11 (3):255.
Chicago/Turabian StyleŽeljko Kamberović; Nataša Gajić; Marija Korać; Sanja Jevtić; Miroslav Sokić; Jovica Stojanović. 2021. "Technologically Sustainable Route for Metals Valorization from Jarosite-PbAg Sludge." Minerals 11, no. 3: 255.
This paper presents thermochemical synthesis of copper/alumina nanocomposites in a Cu-Al2O3 system with 1–2.5 wt.% of alumina and their characterization, which included: transmission electron microscopy: focused ion beam (FIB), analytical electron microscopy (AEM) and high resolution transmission electron microscopy (HRTEM). Thermodynamic analysis was used to study the formation mechanism of desirable products during drying, thermal decomposition and reduction processes. Upon synthesis of powders, samples were cold pressed (2 GPa) in tools dimension 8 × 32 × 2 mm and sintered at temperatures within the range 800–1000 °C for 15 to 120 min in a hydrogen atmosphere. Results of characterization showed that dispersion-strengthened compacts could be produced by sintering of thermo-chemically prepared Cu-Al2O3 powders with properties suitable for material application, such as a contact material exhibiting high strength and high electrical conductivity at the same time. Additional research was carried out in order to analyze the application of the obtained nanocomposite powders for the synthesis of copper/alumina nanocomposites by a new method, which is a combination of a thermochemical procedure and mechanical alloying. The measured values of an electric conductivity and hardness were compared with ones in literature, confirming an advantage of the proposed combined strategy.
Marija Korać; Željko Kamberović; Zoran Anđić; Srećko Stopić. Advances in Thermochemical Synthesis and Characterization of the Prepared Copper/Alumina Nanocomposites. Metals 2020, 10, 1 .
AMA StyleMarija Korać, Željko Kamberović, Zoran Anđić, Srećko Stopić. Advances in Thermochemical Synthesis and Characterization of the Prepared Copper/Alumina Nanocomposites. Metals. 2020; 10 (6):1.
Chicago/Turabian StyleMarija Korać; Željko Kamberović; Zoran Anđić; Srećko Stopić. 2020. "Advances in Thermochemical Synthesis and Characterization of the Prepared Copper/Alumina Nanocomposites." Metals 10, no. 6: 1.
Visoka fleksibilnost, ekonomičnost i ekološka prihvatljivost hidrometalurških operacija nude mogućnost za selektivno dobijanje metala u ranim fazama tehnološkog procesa. To omogućava primenu hidrometalurških operacija u preradi ruda koje, zbog kompleksnog sastava ili niskog sadržaja metala, nisu pogodne za pirometalurški tretman. Nasuprot sulfidnim mineralima, za luženje oksidnih ruda nije potrebno prisustvo oksidansa. U ovom radu prikazani su rezultati ispitivanja uticaja temperature na stepen izluženja bakra iz piritno-halkopiritnog koncentrata rastvorom sumporne kiseline pri atmosferskom pritisku. Na osnovu dobijenih rezultata utvrđeno je da povećanje temperature luženja značajno doprinosi povećanju efikasnosti izluženja pri čemu nakon 6 sati luženja na 40°C postignuta efikasnost je iznosila 90,6%. bakar-oksid; halkopirit; atmosfersko luženje; sumporna kiselina
Milisav B. Ranitović; Željko J. Kamberović; Marija S. Korać; Dragana Đ. Radovanović; Miroslav D. Sokić. Atmospheric leaching of copper from oxide-sulfide ore using sulfuric acid. Tehnika 2020, 75, 172 -175.
AMA StyleMilisav B. Ranitović, Željko J. Kamberović, Marija S. Korać, Dragana Đ. Radovanović, Miroslav D. Sokić. Atmospheric leaching of copper from oxide-sulfide ore using sulfuric acid. Tehnika. 2020; 75 (2):172-175.
Chicago/Turabian StyleMilisav B. Ranitović; Željko J. Kamberović; Marija S. Korać; Dragana Đ. Radovanović; Miroslav D. Sokić. 2020. "Atmospheric leaching of copper from oxide-sulfide ore using sulfuric acid." Tehnika 75, no. 2: 172-175.
Secondary alkaline lead slag (SALS), generated during lead–acid batteries recycling, is a hazardous waste due to its high reactivity, solubility, and migration of toxic elements. After pulverization caused by storage under atmospheric condition for 30 days, the SALS was sieved and coarse fraction (+ 1 mm) was returned to the recycling process. Finer fraction (− 1 mm) was treated by water leaching to remove soluble compounds. SALS compositions prior and after the pre-treatment and effects of liquid-to-solid ratio, stirring rate, and temperature on Na, S, Fe, As, and Pb leaching from SALS were analyzed. The results show that maximal leaching degrees were 95.78%, 75.32%, and 79.89% for Na, S, and As, respectively (20 l kg−1, 600 min−1, 333 K, 120 min). Leachability of Na and S from SALS was controlled by dissolution of Na2SO4 that could be recovered from leaching solution. Isothermal As leaching is described by diffusion mechanism with activation energy of 15.5 kJ mol−1. Insoluble Pb and Fe sulfates, sulfides, and oxides remained in the SALS. Pre-treated SALS, with reduced mass up to 32%, was solidified in cement matrix. The results of toxicity characteristic leaching procedure and unconfined compressive strength confirmed effectiveness of As removal from SALS by water leaching and Pb immobilization in cement matrix containing 20% of SALS.
Marija Štulović; Dragana Radovanović; Željko Kamberović; Marija Korać; Zoran Anđić; Milisav Ranitović. Leaching of toxic elements from secondary alkaline lead slag and stabilized/solidified products. Journal of Material Cycles and Waste Management 2019, 21, 1402 -1413.
AMA StyleMarija Štulović, Dragana Radovanović, Željko Kamberović, Marija Korać, Zoran Anđić, Milisav Ranitović. Leaching of toxic elements from secondary alkaline lead slag and stabilized/solidified products. Journal of Material Cycles and Waste Management. 2019; 21 (6):1402-1413.
Chicago/Turabian StyleMarija Štulović; Dragana Radovanović; Željko Kamberović; Marija Korać; Zoran Anđić; Milisav Ranitović. 2019. "Leaching of toxic elements from secondary alkaline lead slag and stabilized/solidified products." Journal of Material Cycles and Waste Management 21, no. 6: 1402-1413.
Reuse of waste is one of the main principles of sustainable development and circular economy. Secondary alkaline lead slag is a hazardous waste generated in the recycling process of lead-acid batteries that may be suitable in construction materials. The environmental impact of the use of lead slag as a partial replacement of fine aggregates in the cement-based stabilization/solidification (S/S) process for the preparation of concrete was studied in this paper. Solidified products containing 10%, 15%, 20%, and 25% slag were laboratory tested by unconfined compressive strength (UCS) analyses and the Toxicity Characteristic Leaching Procedure (TCLP). At the same time, the leachability of toxic elements from solidified products with a high percent of slag was evaluated under environmental conditions for during one year. The results of the UCS and TCLP indicated that utilization of this type of slag in cement-based applications may be justified with its controlled addition. However, the described application of the slag was disputed due to the high release of As under high alkaline environmental conditions. Eh-pH analyses and the geochemical modeling using the software PHREEQC were evaluated, as well as the mechanism of pollutant (Pb, As) immobilization (precipitation, adsorption) as a function of pH conditions.
Marija Štulović; Dragana Radovanović; Željko Kamberović; Marija Korać; Zoran Anđić. Assessment of Leaching Characteristics of Solidified Products Containing Secondary Alkaline Lead Slag. International Journal of Environmental Research and Public Health 2019, 16, 2005 .
AMA StyleMarija Štulović, Dragana Radovanović, Željko Kamberović, Marija Korać, Zoran Anđić. Assessment of Leaching Characteristics of Solidified Products Containing Secondary Alkaline Lead Slag. International Journal of Environmental Research and Public Health. 2019; 16 (11):2005.
Chicago/Turabian StyleMarija Štulović; Dragana Radovanović; Željko Kamberović; Marija Korać; Zoran Anđić. 2019. "Assessment of Leaching Characteristics of Solidified Products Containing Secondary Alkaline Lead Slag." International Journal of Environmental Research and Public Health 16, no. 11: 2005.
This paper describes the synthesis of tungsten disulfide (WS2) powder by the sulfurization of tungsten trioxide (WO3) particles in the presence of additive potassium carbonate (K2CO3) in nitrogen (N2) atmosphere, first at lower temperature (200 °C) and followed by reduction at higher temperature (900 °C). In addition, the ultrasonic spray pyrolysis of ammonium meta-tungstate hydrate (AMT) was used for the production of WO3 particles at 650 °C in air. The HSC Chemistry® software package 9.0 was used for the analysis of chemistry and thermodynamic parameters of the processes for WS2 powder synthesis. The crystalline structure and phase composition of all synthesized powders were analyzed by X-ray diffraction (XRD) measurements. The morphology and chemical composition of these samples were examined by scanning electron microscopy (SEM) combined with energy dispersive X-ray analysis (EDX).
Nataša Gajić; Željko Kamberović; Zoran Anđić; Jarmila Trpčevská; Beatrice Plešingerova; Marija Korać. Synthesis of Tribological WS2 Powder from WO3 Prepared by Ultrasonic Spray Pyrolysis (USP). Metals 2019, 9, 277 .
AMA StyleNataša Gajić, Željko Kamberović, Zoran Anđić, Jarmila Trpčevská, Beatrice Plešingerova, Marija Korać. Synthesis of Tribological WS2 Powder from WO3 Prepared by Ultrasonic Spray Pyrolysis (USP). Metals. 2019; 9 (3):277.
Chicago/Turabian StyleNataša Gajić; Željko Kamberović; Zoran Anđić; Jarmila Trpčevská; Beatrice Plešingerova; Marija Korać. 2019. "Synthesis of Tribological WS2 Powder from WO3 Prepared by Ultrasonic Spray Pyrolysis (USP)." Metals 9, no. 3: 277.
The aim of this research was to study the effect of graphite addition in the process of synthesis of tribological materials based on tin sulphides. The tin sulphides powders were synthesized from selected precursors by pyrometallurgical method in rotary tilting tube furnace. The thermodynamic parameters of the synthesis were determined using HSC Chemistry software modelling package. In addition, the synthesis process was also characterized by the thermal analysis method: simultaneous differential scanning calorimetry and thermogravimetry (DCS-TGA). The characterization of the synthesized tin sulphides powders included analysis of chemical composition by optical emission spectroscopy, phase composition identification by X-ray diffraction (XRD) and examination of morphology, as well as elemental composition by scanning electron microscopy (SEM) with energy-dispersive spectroscopy (EDS). The hexagonal SnS2 and orthorhombic Sn2S3 phases were formed after the thermal treatment of starting powders in nitrogen atmosphere. The obtained results indicate the positive effects of the graphite addition which enables the synthesis of tin sulphide powders with appropriate content of sulphide phases with minimal loss of sulphur.
Natasa Gajic; Zeljko Kamberovic; Zoran Andjic; Marija Korac; Jarmila Trpcevská; Mirko Stamatovic. Improving the synthesis process of tribological materials based on tin sulphides by adding graphite as additive. Journal of the Serbian Chemical Society 2019, 84, 423 -433.
AMA StyleNatasa Gajic, Zeljko Kamberovic, Zoran Andjic, Marija Korac, Jarmila Trpcevská, Mirko Stamatovic. Improving the synthesis process of tribological materials based on tin sulphides by adding graphite as additive. Journal of the Serbian Chemical Society. 2019; 84 (4):423-433.
Chicago/Turabian StyleNatasa Gajic; Zeljko Kamberovic; Zoran Andjic; Marija Korac; Jarmila Trpcevská; Mirko Stamatovic. 2019. "Improving the synthesis process of tribological materials based on tin sulphides by adding graphite as additive." Journal of the Serbian Chemical Society 84, no. 4: 423-433.
This paper presents investigations of aluminum addition influence on the corrosion characteristics of the sterling silver Ag-Cu-Zn-Si alloys. The procedure for obtaining Ag-Cu-Zn-Al-Si alloys in small ranges of predefined composition was also presented. Open circuit potential measurements, linear polarization resistance method and potentiodynamic polarization tests were employed to determine corrosion characteristics of the alloys. The materials were tested in a 0.01M sodium sulfide solution. It was shown that the addition of aluminum improves sulfidization resistance and corrosion characteristics. Best results are achieved for the alloy with the following composition 92.5% Ag, 1.9% Cu, 3.7% Zn, 1.6% Al and 0.3% Si.
Marija Korać; Stevan Dimitrijević; Kemal Delijić; Željko Kamberović. Anti-tarnish silver alloys in system Ag-Cu-Zn-Si with the addition of aluminum. Metallurgical and Materials Engineering 2018, 24, 181 -188.
AMA StyleMarija Korać, Stevan Dimitrijević, Kemal Delijić, Željko Kamberović. Anti-tarnish silver alloys in system Ag-Cu-Zn-Si with the addition of aluminum. Metallurgical and Materials Engineering. 2018; 24 (3):181-188.
Chicago/Turabian StyleMarija Korać; Stevan Dimitrijević; Kemal Delijić; Željko Kamberović. 2018. "Anti-tarnish silver alloys in system Ag-Cu-Zn-Si with the addition of aluminum." Metallurgical and Materials Engineering 24, no. 3: 181-188.
This paper presents an experimentally-proved hydrometallurgical process for selective metals recovery from the waste-printed circuit boards (WPCBs) using a combination of conventional and time-saving methods: leaching, cementation, precipitation, reduction and electrowinning. According to the results obtained in the laboratory tests, 92.4% Cu, 98.5% Pb, 96.8% Ag and over 99% Au could be selectively leached and recovered using mineral acids: sulfuric, nitric and aqua regia. Problematic tin recovery was addressed with comprehensive theoretical and experimental work, so 55.4% of Sn could be recovered through the novel physical method, which consists of two-step phase separation. Based on the results, an integral hydrometallurgical route for selective base and precious metals recovery though consecutive steps, (i) Cu, (ii) Sn, (iii) Pb and Ag, and (iv) Au, was developed. The route was tested at scaled-up laboratory level, confirming feasibility of the process and efficiencies of metals recovery. According to the obtained results, the proposed hydrometallurgical route represents an innovative and promising method for selective metals recovery from WPCBs, particularly applicable in small scale hydrometallurgical environments, focused on medium and high grade WPCBs recycling.
Zeljko Kamberovic; Milisav Ranitović; Marija Korać; Zoran Andjić; Natasa Gajic; Jovana Djokić; Sanja Jevtic. Hydrometallurgical Process for Selective Metals Recovery from Waste-Printed Circuit Boards. Metals 2018, 8, 441 .
AMA StyleZeljko Kamberovic, Milisav Ranitović, Marija Korać, Zoran Andjić, Natasa Gajic, Jovana Djokić, Sanja Jevtic. Hydrometallurgical Process for Selective Metals Recovery from Waste-Printed Circuit Boards. Metals. 2018; 8 (6):441.
Chicago/Turabian StyleZeljko Kamberovic; Milisav Ranitović; Marija Korać; Zoran Andjić; Natasa Gajic; Jovana Djokić; Sanja Jevtic. 2018. "Hydrometallurgical Process for Selective Metals Recovery from Waste-Printed Circuit Boards." Metals 8, no. 6: 441.
This paper presents the results of theoretical assessment and a preliminary experimental investigation of the modified pyrometallurgical processing of metallic granulate obtained after mechanical treatment of waste printed circuit boards (WPCBs). The studied two-step process included oxidation of metallic granulate followed by pyrometallurgical refining in a DC arc-furnace. In the investigated process, the oxygen bounded in metal oxides, obtained during the oxidation annealing of granulate, was used as a “solid” oxidizer for subsequent pyrometallurgical refining in a DC arc-furnace. According to the obtained results, the Cu content in the produced metallic phase (anodic copper) was 98.4% and is suitable for further electro-refining process. In addition, over 94% of Au was concentrated in metallic phase, suggesting that a high Au yield could be attained. However, owing to the distribution between slag phase and filter product, only 60% of Ag was collected in the metal phase. In-between metal and slag is the metal-oxide phase, containing Cu with metals impurities, such as Sn and Pb, which was obtained as well, and could be further treated using conventional processes for additional metal valorization. The investigated concept would allow substitution of the long-lasting oxygen blowing process and application of complicated pyrometallurgical reactors and create a feasible alternative for lower operating capacities.
Zeljko Kamberovic; Milisav Ranitović; Marija Korać; Nikola Jovanović; Božidar Tomović; Natasa Gajic. Pyro-Refining of Mechanically Treated Waste Printed Circuit Boards in a DC Arc-Furnace. Journal of Sustainable Metallurgy 2018, 4, 251 -259.
AMA StyleZeljko Kamberovic, Milisav Ranitović, Marija Korać, Nikola Jovanović, Božidar Tomović, Natasa Gajic. Pyro-Refining of Mechanically Treated Waste Printed Circuit Boards in a DC Arc-Furnace. Journal of Sustainable Metallurgy. 2018; 4 (2):251-259.
Chicago/Turabian StyleZeljko Kamberovic; Milisav Ranitović; Marija Korać; Nikola Jovanović; Božidar Tomović; Natasa Gajic. 2018. "Pyro-Refining of Mechanically Treated Waste Printed Circuit Boards in a DC Arc-Furnace." Journal of Sustainable Metallurgy 4, no. 2: 251-259.
The aesthetic appearance of metals has long been recognised in archaeometric studies as an important factor driving inventions and innovations in the evolution of metal production. Nevertheless, while studies of ancient gold metallurgy are well supported by modern research in colour characteristics of gold alloys, the colour properties of major prehistoric copper alloys, such as arsenical copper and tin bronzes, remain either largely understudied or not easily accessible to the western scholarship. A few published studies have already indicated that alloying and heat treatment change the colours of copper alloys, although they are mainly based on examples of prehistoric tin bronze objects and experimental casts. Here we present a procedure for building the Cu-As-Sn ternary colour diagram, starting with experimental casting of 64 binary and ternary alloys in this system. We used two types of information to produce two different ternary colour diagrams: one based on photographs of the samples, and the other based on the colorimetric measurements. Furthermore, we developed a procedure for creating a graphic representation of colours in the Cu-As-Sn ternary diagram using QGIS. As an initial case study, we plotted the composition of the world's earliest tin bronze artefacts; the graphic representation further supports claims about the importance of a golden hue for their invention and demand, c. 6500 years ago. We argue that the presented colour diagrams will find wide use in future investigations of aesthetics of prehistoric copper alloys.
M. Radivojević; J. Pendić; A. Srejić; M. Korać; C. Davey; A. Benzonelli; M. Martinón-Torres; N. Jovanović; Ž. Kamberović. Experimental design of the Cu-As-Sn ternary colour diagram. Journal of Archaeological Science 2018, 90, 106 -119.
AMA StyleM. Radivojević, J. Pendić, A. Srejić, M. Korać, C. Davey, A. Benzonelli, M. Martinón-Torres, N. Jovanović, Ž. Kamberović. Experimental design of the Cu-As-Sn ternary colour diagram. Journal of Archaeological Science. 2018; 90 ():106-119.
Chicago/Turabian StyleM. Radivojević; J. Pendić; A. Srejić; M. Korać; C. Davey; A. Benzonelli; M. Martinón-Torres; N. Jovanović; Ž. Kamberović. 2018. "Experimental design of the Cu-As-Sn ternary colour diagram." Journal of Archaeological Science 90, no. : 106-119.
This paper presents investigations of the influence of silicon addition on the mechanical and corrosion characteristics of the sterling silver Ag-Cu-Zn alloys. The procedure for obtaining Ag-Cu-Zn-Si alloys in small ranges of composition was also presented. Vickers hardness tests and three electrochemical tests were performed on the samples in this study. Open circuit potential measurements, linear polarization resistance method, and potentiodynamic polarization tests were employed to determine corrosion characteristics of the alloys. The materials were tested in 0.9% NaCl solution, artificial sweat, 0.1 and 0.01 M sodium sulfide solutions. It was shown that addition of silicone increases hardness and generally improves sulfidation resistance and corrosion characteristics in near-neutral chloride solutions of the Ag-Cu-Zn alloys.
Stevan Dimitrijevic; Vladimir Parezanin; Zeljko Kamberovic; Milisav Ranitovic; Marija Korac; Silvana Dimitrijevic. Design of anti-tarnish sterling silver Ag-Cu-Zn alloy and investigation of silicon addition influence on mechanical and corrosion characteristics. Chemical Industry and Chemical Engineering Quarterly 2018, 24, 267 -274.
AMA StyleStevan Dimitrijevic, Vladimir Parezanin, Zeljko Kamberovic, Milisav Ranitovic, Marija Korac, Silvana Dimitrijevic. Design of anti-tarnish sterling silver Ag-Cu-Zn alloy and investigation of silicon addition influence on mechanical and corrosion characteristics. Chemical Industry and Chemical Engineering Quarterly. 2018; 24 (3):267-274.
Chicago/Turabian StyleStevan Dimitrijevic; Vladimir Parezanin; Zeljko Kamberovic; Milisav Ranitovic; Marija Korac; Silvana Dimitrijevic. 2018. "Design of anti-tarnish sterling silver Ag-Cu-Zn alloy and investigation of silicon addition influence on mechanical and corrosion characteristics." Chemical Industry and Chemical Engineering Quarterly 24, no. 3: 267-274.
RTB Bor smelter and sulfuric acid plant modernization project includes reconstruction of an old wastewater treatment plant (WWTP). The task for a team from the Innovation Center of TMF was technical-technological solution for the reconstruction of WWTP with a new wastewater treatment process. Wastewater from the primary copper smelter is very acidic, with a high content of dissolved heavy metals and arsenic. Treatment of wastewater includes the neutralization of the acid, precipitation of the heavy metals in the form of hydroxides by using hydrated lime, and the arsenic co-precipitation with iron(III) hydroxide. Material and energy balances of the process are determined by simulating the wastewater treatment in Superpro Designer software package with thermodynamic parameters defined in HSC Chemistry program. The simulation results were confirmed by experimental tests at the pilot plant level. The designed process is applied in WWTP exploitation within the new copper smelter RTB Bor. Treatment of 8,7 m2/h of wastewater generates 7,2 m2/h of treated wastewater and 10,3 t/h of wastewater treatment (WWT) sludge. The WWT sludge is characterized as hazardous waste requiring treatment prior to disposal. A proposed treatment for WWT sludge is solidification/stabilization (S/S) using a mixture of fly ash and hydrated lime. Results of laboratory scale tests, which included standard leaching tests EN 12457 and TCLP, as well as the compressive strength testing of obtained solidificates, shows that the S/S treatment leads to stabilization of more than 99% of the heavy metals and more than 90% of arsenic. The treated sludge has the characteristics of non-hazardous waste and is suitable for disposal.
Dragana Radovanović; Milisav Ranitović; Željko Kamberović; Marija Korać; Milorad Gavrilovski. Treatment of Wastewater from New Copper Smelter RTB Bor. Procesna tehnika 2017, 29, 20 -26.
AMA StyleDragana Radovanović, Milisav Ranitović, Željko Kamberović, Marija Korać, Milorad Gavrilovski. Treatment of Wastewater from New Copper Smelter RTB Bor. Procesna tehnika. 2017; 29 (1):20-26.
Chicago/Turabian StyleDragana Radovanović; Milisav Ranitović; Željko Kamberović; Marija Korać; Milorad Gavrilovski. 2017. "Treatment of Wastewater from New Copper Smelter RTB Bor." Procesna tehnika 29, no. 1: 20-26.
Wide application of hard metals requires increased consumption of their constituents. Their high cost and scarcity impose the need for finding new, both ecologically and economically justified ways for their production. In presented research, on the basis of previous research, a review of an integrated technological procedure of recycling and valorization of useful components from hard metals secondary raw materials is given.Integrated procedure for processing of hard metal's waste enables the preparation of a wide range of powders with required properties, a high efficiency and reducing the duration of individual stages of procedures for their processing. Therefore, besides conservation of natural resources there are also significant economic and energetic benefits. The developed technological procedure is in service of sustainable development.
Željko Kamberović; Zoran Anđić; Marija Korać; Natasa Gajic; B. Tomović. Integrated procedure for recycling and valorization of useful components from secondary raw materials based on hard metals. Metallurgical and Materials Engineering 2017, 23, 167 -181.
AMA StyleŽeljko Kamberović, Zoran Anđić, Marija Korać, Natasa Gajic, B. Tomović. Integrated procedure for recycling and valorization of useful components from secondary raw materials based on hard metals. Metallurgical and Materials Engineering. 2017; 23 (2):167-181.
Chicago/Turabian StyleŽeljko Kamberović; Zoran Anđić; Marija Korać; Natasa Gajic; B. Tomović. 2017. "Integrated procedure for recycling and valorization of useful components from secondary raw materials based on hard metals." Metallurgical and Materials Engineering 23, no. 2: 167-181.
Simulating the reactions in a complex system can lead to self-sustaining and energy efficient treatment of wastes in recycling promoting manner. In this contribution, the synergic combination of electric arc furnace dust (EAFD), mill scale, and secondary aluminum, in a form of waste foil, was researched aiming to use exothermal energy of reactions and to obtain environmentally favorable products. The secondary aluminum in the form of foil was prepared in different ways in order to develop aluminum surface and to be suitable for aluminothermic reactions. The commercial aluminum powder was used to determine optimal conditions using full factorial experiment design. After that, research was performed on aluminothermic reactions with the aluminum powder obtained from secondary aluminum foils. Results show that the secondary aluminum can be successfully used for a treatment of oxides bearing hazardous wastes in an energy efficient and environmentally friendly manner. The comparative life-cycle assessment revealed several advantages of using the secondary aluminum foil as a reduction agent compared to the conventional recycling of the secondary aluminum foil.
Vaso Manojlovic; Željko Kamberovic; Milorad Gavrilovski; Miroslav Sokic; Marija Korac. Combustion of Metallurgical Wastes Using Secondary Aluminum Foils. Combustion Science and Technology 2017, 189, 1072 -1089.
AMA StyleVaso Manojlovic, Željko Kamberovic, Milorad Gavrilovski, Miroslav Sokic, Marija Korac. Combustion of Metallurgical Wastes Using Secondary Aluminum Foils. Combustion Science and Technology. 2017; 189 (6):1072-1089.
Chicago/Turabian StyleVaso Manojlovic; Željko Kamberovic; Milorad Gavrilovski; Miroslav Sokic; Marija Korac. 2017. "Combustion of Metallurgical Wastes Using Secondary Aluminum Foils." Combustion Science and Technology 189, no. 6: 1072-1089.
Based on the analysis of the non-standard iron-bearing raw materials treatment process and the results of real composition measurements of the flue gas, the study of hazards by identification of harmful substances that occur in the accident, as well as the modeling of the system of protection against air-pollution due to the cancellation of work the bag filter was carried out. Applying the model (Aloha software package) provides an overview of possible developments of events and zones of propagation of the precipitated particulate matter through the share of cadmium (Cd) in them. In the case of malfunction of filter system, emissions of particulate matter enormously exceed the permitted values. In the conditions of the simulated accident, particle velocity of flue gases was amounted E≈738mg/s or 2657g/h of dust. The propagation of the precipitated particulate matter in the lower layer of the atmosphere, downwind, given trough the share of Cd in them, is 100m from the source of pollution for the characteristic density of 5mg/m2×day and 140m for the characteristic density of 2mg/m2×day, in the stable state of the atmosphere, i.e. 870m and 1100m, respectively, in the neutral state of the atmosphere.
Zoran Anđić; Marija Korać; Željko Kamberović. Treatment of dispersed iron-bearing raw materials and modeling of the protection systems against air-pollution. Metallurgical and Materials Engineering 2016, 22, 303 -312.
AMA StyleZoran Anđić, Marija Korać, Željko Kamberović. Treatment of dispersed iron-bearing raw materials and modeling of the protection systems against air-pollution. Metallurgical and Materials Engineering. 2016; 22 (4):303-312.
Chicago/Turabian StyleZoran Anđić; Marija Korać; Željko Kamberović. 2016. "Treatment of dispersed iron-bearing raw materials and modeling of the protection systems against air-pollution." Metallurgical and Materials Engineering 22, no. 4: 303-312.
Electric arc furnace (EAF) dust, together with a mill scale and coke were smelted in a laboratory electric arc furnace. These metallurgical wastes consist of a many different phases and elements, making the reaction process complex. Thermo-chemical analysis of the reactions in metal, slag, and gas phases was done, and used for modeling of the mixture composition and energy consumption required for smelting. Modelling was performed with the software named RikiAlC. The crude ZnO, slag, and metal phase were analyzed using the atomic absorption spectrometry (AAS), the optical emission spectrometry with inductively coupled plasma (ICP-OES), the X-ray diffraction (XRD), the scanning electron microscopy (SEM) equipped with energy dispersive spectrometry (EDS), and reflected and transmitted light microscopy. Also, in order to follow the behavior of this process the exhausted gases were monitored. The synergetic effects of the designed mixture may be recognized in minimizing energy consumption for the smelting process, improving the product yield efficiency, and reducing the negative environmental effects.
Vaso Manojlović; Željko Kamberović; Miroslav Sokić; Milorad Gavrilovski; Marija Korać. Designing of Synergistic Waste Mixtures for Multiphase Reactive Smelting. Metals 2016, 6, 138 .
AMA StyleVaso Manojlović, Željko Kamberović, Miroslav Sokić, Milorad Gavrilovski, Marija Korać. Designing of Synergistic Waste Mixtures for Multiphase Reactive Smelting. Metals. 2016; 6 (6):138.
Chicago/Turabian StyleVaso Manojlović; Željko Kamberović; Miroslav Sokić; Milorad Gavrilovski; Marija Korać. 2016. "Designing of Synergistic Waste Mixtures for Multiphase Reactive Smelting." Metals 6, no. 6: 138.
The aim of this study was comparative analysis of catalysts with 5 and 20 wt. % Ni loading, with and without Pd additive, and it included: determination of reduction degrees, investigation on microstructure by scanning electron microscopy and chemical analysis by energy-dispersive spectroscopy. Ni/Al2O3 and Ni-Pd/Al2O3 catalysts supported on ?-Al2O3-based foams were synthesized by aerosol assisted impregnation. Impregnation of the foams by ultrasonically aerosolized chlorides was followed by drying at 473 K and hydrogen reduction at 533 and 633 K. Lower Ni loading resulted in higher reduction degrees. Ni loading of 20 wt. % enabled relatively uniform coverage of the foam with a metallic coating. With activity modifier (Pd), nearly complete reduction was achieved at both temperatures. Reduction degrees reached 99.4 and 98.2 wt. % at 533 K for 5 and 20 wt. % of Ni, respectively.
Vesna Nikolić; Zeljko Kamberovic; Marija Korac; Zoran Andjic; Aleksandar Mihajlovic; Jelena Uljarevic. Nickel-based catalysts: Dependence of properties on nickel loading and modification with palladium. Chemical Industry 2016, 70, 137 -142.
AMA StyleVesna Nikolić, Zeljko Kamberovic, Marija Korac, Zoran Andjic, Aleksandar Mihajlovic, Jelena Uljarevic. Nickel-based catalysts: Dependence of properties on nickel loading and modification with palladium. Chemical Industry. 2016; 70 (2):137-142.
Chicago/Turabian StyleVesna Nikolić; Zeljko Kamberovic; Marija Korac; Zoran Andjic; Aleksandar Mihajlovic; Jelena Uljarevic. 2016. "Nickel-based catalysts: Dependence of properties on nickel loading and modification with palladium." Chemical Industry 70, no. 2: 137-142.
Presented compilation of scientific, theoretical and experimental results, promotes an innovative synergy of various metals and industrial activities in metallurgy, resulting in profitable transformation of byproducts and waste materials into resources. Focusing on treatment of specific by-products from zinc and copper primary production, as well on specific waste streams like WEEE and waste automotive catalysts, group is actively contribute to the Serbia, region and EU sustainability policies. In terms of sustainable development, metallurgy is a traditional part of the solution rather than part of the problem, so it is necessary to take the chance and centuries-old tradition.
Željko J. Kamberović; Marija S. Korać; Milisav B. Ranitović; Nikola S. Majinski; Nataša M. Gajić; Kamberović Željko J.; Korać Marija S.; Ranitović Milisav B.; Gajić Nataša M.. Innovative solutions for the extraction of technology metals from complex primary and secondary raw materials. Tehnika 2016, 71, 221 -229.
AMA StyleŽeljko J. Kamberović, Marija S. Korać, Milisav B. Ranitović, Nikola S. Majinski, Nataša M. Gajić, Kamberović Željko J., Korać Marija S., Ranitović Milisav B., Gajić Nataša M.. Innovative solutions for the extraction of technology metals from complex primary and secondary raw materials. Tehnika. 2016; 71 (2):221-229.
Chicago/Turabian StyleŽeljko J. Kamberović; Marija S. Korać; Milisav B. Ranitović; Nikola S. Majinski; Nataša M. Gajić; Kamberović Željko J.; Korać Marija S.; Ranitović Milisav B.; Gajić Nataša M.. 2016. "Innovative solutions for the extraction of technology metals from complex primary and secondary raw materials." Tehnika 71, no. 2: 221-229.
The goal of this research was to examine exploitation properties of Ni-Pd/Al2O3 catalyst supported on α-Al2O3 based foam in the dry methane reforming. The catalyst was prepared by using aerosol method. Chloride precursors for Ni and Pd were reduced by hydrogen at low temperature of 533 K, without previous calcination. The reforming experiment was performed for 3 h, with standing time of 1 h for each of the following temperatures: 873, 973 and 1023 K. Conclusions on selectivity, catalytic activity and stability were made on the basis of CO and H2 yields.
Vesna Nikolić; Željko Kamberović; Zoran Anđić; Marija Korać; Miroslav Sokić; Nataša Gajić; Nikola Jovanović. Exploitation Properties of Ni-Pd/Al2O3 Catalyst Supported on Ceramic Foam. Metallurgical and Materials Engineering 2015, 21, 277 -282.
AMA StyleVesna Nikolić, Željko Kamberović, Zoran Anđić, Marija Korać, Miroslav Sokić, Nataša Gajić, Nikola Jovanović. Exploitation Properties of Ni-Pd/Al2O3 Catalyst Supported on Ceramic Foam. Metallurgical and Materials Engineering. 2015; 21 (4):277-282.
Chicago/Turabian StyleVesna Nikolić; Željko Kamberović; Zoran Anđić; Marija Korać; Miroslav Sokić; Nataša Gajić; Nikola Jovanović. 2015. "Exploitation Properties of Ni-Pd/Al2O3 Catalyst Supported on Ceramic Foam." Metallurgical and Materials Engineering 21, no. 4: 277-282.