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Wyświetlanie 1-15 z 26
Tytuł:
Wpływ utleniacza na ługowanie ołowiu z koncentratu miedziowego
The effect of oxidant on leaching lead from copper concentrate
Autorzy:
Sanak-Rydlewska, S.
Bieszczad, T.
Powiązania:
https://bibliotekanauki.pl/articles/318797.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
koncentrat miedziowy
obróbka chemiczna
zawartość ołowiu
ługowanie
copper concentrate
chemical treatment
lead content
leaching
Opis:
W artykule podano wyniki doświadczeń laboratoryjnych ługowania ołowiu z koncentratu miedziowego za pomocą octanu amonu. Przebadano wpływ dodatku nadtlenku wodoru do roztworu ługującego na stopień ługowania ołowiu z koncentratu. Proces prowadzono przez 60 minut w temperaturze 293 K, stosując roztwory octanu amonowego o stężeniu 10% i 40% wagowych.
This article presents results of laboratory experiments of leaching lead from copper concentrate with ammonium acetate. The effect of addition of hydrogen peroxide to the leaching solution on the rate of lead leaching from copper concentrate was studied. The process was carried out for 60 minutes at 293 K, in 10 and 40 percent (by weight) ammonium acetate solutions.
Źródło:
Inżynieria Mineralna; 2001, R. 2, nr 1, 1; 35-39
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilization of polymeric binders to agglomerate oxidized copper ore
Autorzy:
Kiaei, Kimia
Golpayegani, Mohammad Hasan
Powiązania:
https://bibliotekanauki.pl/articles/27323657.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
heap leaching
permeability
agglomeration
polymeric compounds
copper ore
Opis:
Permeability reduction is a major challenge in heap leaching, primarily caused by the accumulation of fines that move with the leaching agent, leading to the formation of dead zones and channeling within the heap. In the Aria copper beneficiation plant, the 0–2 mm fraction with a copper grade of 1.4% undergoes pre-separation prior to heap loading without further processing. This study investigated the potential of using the agglomeration method to improve permeability in the case of using the 0–2 mm fraction of ore. Mineral compounds, such as sodium silicate and calcium sulfate, and non-ionic, cationic, and anionic polymer compounds, were used in the agglomeration process. The strength of interparticle bonding was evaluated by measuring the fine migration percentage (FMP) in the soak test. The results revealed that agglomerates produced using non-ionic compounds had the highest bonding strength, with an FMP of 3.89%, the lowest of all the compounds tested. This enhanced bonding strength was attributed to the combined influence of hydrogen bonding forces and van der Waals forces.
Źródło:
Physicochemical Problems of Mineral Processing; 2023, 59, 6; art. no. 176682
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thiosulfate leaching of silver from a solid residue after pressure leaching of industrial copper sulfides flotation concentrates
Autorzy:
Wejman-Gibas, K.
Chmielewski, T.
Borowski, K.
Gibas, K.
Jeziorek, M.
Wodka, J.
Powiązania:
https://bibliotekanauki.pl/articles/109947.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
atmospheric leaching
silver
sodium thiosulfate
ammonia
Lubin copper concentrate
Opis:
Hydrometallurgical recovery of silver from a solid residue after pressure leaching of a flotation copper concentrate from the Lubin Concentrator (KGHM Polska Miedz S.A.) was investigated. Thiosulphate leaching was examined with regard to the highest possible leaching efficiency and optimization process parameters. The effect of thiosulfate ions concentration within the range from 0.25 to 1.00 mol/dm3 at a constant ammonia concentration, and ammonia concentration within the range from 0.40 to 1.00 mol/dm3 at a constant thiosulfate concentration on leaching recovery of selected metals were examined. Moreover, the effect of copper(II) ions addition on silver leaching was studied. It was shown that the leaching recovery of silver increased with increasing thiosulfate and ammonia concentration. At the highest thiosulfate ions concentration, the observed silver leaching recovery was 60%. The best results were obtained at an ammonia concentration of 0.80 mol/dm3, where the leaching recovery of Ag reached 75%. It was established that addition of Cu(II) did not affect silver leaching. Nearly 100% efficiency of thioslulohate silver leaching was achieved by pretreatment of the solid residue after pressure leaching with NaOH solutions.
Źródło:
Physicochemical Problems of Mineral Processing; 2015, 51, 2; 601-610
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies on hydrometallurgical processes using nuclear techniques to be applied in copper industry. I. Application of 64Cu radiotracer for investigation of copper ore leaching
Autorzy:
Smoliński, T.
Rogowski, M.
Brykała, M.
Pyszynska, M.
Chmielewski, A. G.
Powiązania:
https://bibliotekanauki.pl/articles/147894.pdf
Data publikacji:
2018
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
copper ore
hydrometallurgy
leaching
NAA
Opis:
Scientific objective of this work was elaboration of radiometric method for the development of hydrometallurgical process for recovery of Cu from the copper ore. A neutron activation analysis (NAA) was identified as a very convenient tool for the process investigation. The samples of copper ore were activated in a nuclear reactor. The parameters of the neutron activation were calculated. Radioisotope 64Cu was selected as an optimal tracer, and it was used for the investigation of the leaching process. During the experiments, various processes applying leaching media such as sulphuric acid, nitric acid, and organic acids were investigated. The recovery of the metals using sulphuric acid was insufficient, around 10%. Investigated organic media also did not meet expectations. The best results were obtained in experiments with nitric acid. Up to 90% of Cu and other metals were extracted from the copper ore. Copper concentration calculations obtained by NAA were confimed by inductively coupled plasma mass spectrometry (ICP-MS) technique. Both techniques gave comparable results, but the advantage of the NAA is a possibility for easy online measurements without shutting down or disturbing the system.
Źródło:
Nukleonika; 2018, 63, 4; 123-129
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selective leaching of copper from near infrared sensor-based preconcentrated copper ores
Autorzy:
Ambo, Amos Idzi
Iyakwari, Shekwonyadu
Glass, Hylke J
Powiązania:
https://bibliotekanauki.pl/articles/1449474.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
near infrared
leaching
pre-concentration
ore characterization
copper
Opis:
Copper oxide ore was pre-concentrated using near infrared sensor-based method and classified as product, middling and waste. The product and middling fractions were leached with ammonium chloride reagent. The effect of temperature, ammonium chloride concentration, solid- liquid ratio, stirring speed and particle size experimental variables were investigated. Mineralogical and chemical analysis of the ore fractions indicated that copper content was in accordance with the preconcentration strategy, with the product having a higher concentration than the middling and waste. The rate of copper extraction was found to be higher in the product than in the middling sample which further supports the near infrared classification, QEMSCAN®, X-ray diffraction, SEM mineralogical and X-ray florescence and Inductively coupled plasma Mass spectrometry chemical data. It was revealed that the leaching rate increases with increasing ammonium chloride concentration, temperature and decreasing ore particle size, stirring speed and solid-liquid ratio. Analysis of the experimental data by shrinking core model indicated that the dissolution kinetics follow the heterogeneous reaction model for the chemical control mechanism where the activation energies of 45.9 kJ/mol and 47.5 kJ/mol for product and middling fractions respectively were obtained. Characterization of the residue obtained at optimum leaching condition with X-ray diffraction suggests that copper was selectively leached when compared to the profile of the raw ore. The trace levels of metals associated with abundant X-ray diffraction profiles of residue found in the leachate further confirm the selective leaching process.
Źródło:
Physicochemical Problems of Mineral Processing; 2020, 56, 1; 204-218
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Release of heavy metals from waste into leachate in active solid waste landfill
Autorzy:
Talalaj, I. A.
Powiązania:
https://bibliotekanauki.pl/articles/206952.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
copper
cadmium
carbonates
heavy metals
Pb concentration
landfill
leachate treatment
leaching
lead
zinc
solid waste landfill
miedź
kadm
węglany
metale ciężkie
składowisko
ługowanie
ołów
cynk
stężenie ołowiu
wysypisko odpadów stałych
Opis:
Mass balance of selected heavy metals (Cu, Cr, Pb, Hg, Zn, Cd) released from waste into leachate during 8 years of landfill exploitation has been calculated. The average release of all analyzed heavy metals did not exceed 1.7%. Heavy metals released in the largest quantities were Cr (0.025 –1.685%), Hg (0.033–1.540%) and Cd (0.082–0.701%). Release of Pb, Cu, Zn was 0.008–0.152%; 0.012–0.085% and 0.007–0.152%, respectively. Cr and Hg do not form an insoluble sulfide precipitate and that is why they are released in a larger amount. Cd and Pb concentrations are positively correlated with the amount of the atmospheric precipitation and the amount of leachates, which means that infiltrating rainfall can leach out these metals from waste. Favorable conditions for leaching of these metals are probably a result of their precipitation as carbonates. A strong correlation between Cu, Zn, and Cr indicates they do not precipitate as carbonates and further they can be subject to desorption processes. In the case of Cu, Zn, Cr and Hg, a positive correlation with the amount of deposited waste was also observed.
Źródło:
Environment Protection Engineering; 2015, 41, 1; 83-93
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recovery of copper from smelting slag by sulphation roasting and water leaching
Autorzy:
Dimitrijevic, M. D.
Urosevic, D. M.
Jankovic, Z. D.
Milic, S. M.
Powiązania:
https://bibliotekanauki.pl/articles/110627.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
copper
slag
sulphation
roasting
acid baking
leaching
Opis:
In this work extraction of copper and iron from a reverberatory furnace slag was studied. A two-step extraction procedure was followed. The first step was roasting of the slag in the presence of sulphuric acid at temperatures between 150 and 800oC. The second step was leaching of the resulting calcine with distilled water. The maximum copper extraction of about 94% was achieved. In this case, the slag was roasted at 250oC with sulphuric acid higher of about 33% than that stoichiometrically required, followed by water leaching of calcine at 50oC. About 55% of iron was also dissolved under these conditions. On the other hand, for the calcine obtained at sulphation temperature of 600oC, extraction of copper in a water leaching stage was still relatively high (about 79%), whereas that of iron was comparatively low (about 6%). Dissolution of copper and iron from the calcine was found to be very fast and was complete within the first few minutes. The water temperature in the leaching step was found to have no effect on extraction of copper and iron from the calcine in the range of 30 to 85oC.
Źródło:
Physicochemical Problems of Mineral Processing; 2016, 52, 1; 409-421
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recovery of copper from copper slag and copper slag flotation tailings by oxidative leaching
Autorzy:
Urosevic, D. M.
Dimitrijevic, M. D.
Jankovic, Z. D.
Antic, D. V.
Powiązania:
https://bibliotekanauki.pl/articles/109899.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
copper slag
copper slag flotation tailings
leaching
sulphuric acid
ferric sulphate
hydrogen peroxide
Opis:
Copper smelter slag and copper smelter slag flotation tailings were leached using sulphuric acid solutions, without or with the addition of either ferric sulphate or hydrogen peroxide. Copper extraction from the slag was typically found to be twice as high as that from the slag flotation tailings. Hydrogen peroxide was determined to be the best lixiviant. Thus, copper and iron extractions were 63.4% and 48.6%, respectively, when leaching the slag with 3 M H2O2, after 120 minutes of reaction at room temperature. Copper dissolution was generally found to be the dominant process within the first 60 minutes of reaction, whereas iron dissolution dominated afterwards.
Źródło:
Physicochemical Problems of Mineral Processing; 2015, 51, 1; 73-82
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recovery of cobalt and nickel by atmospheric leaching of flotation sulfide concentrate from lubin concentrator
Autorzy:
Gibas, K.
Borowski, K.
Chmielewski, T.
Wejman, K.
Powiązania:
https://bibliotekanauki.pl/articles/951849.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
atmospheric leaching
cobalt
nickel
sulphuric acid
Lubin copper concentrate
Opis:
An experimental study on leaching of cobalt and nickel from a Lubin (Poland) sulfide flotation copper concentrate with oxygenated sulphuric acid solution in the presence of iron(III) sulfate is presented. The effect of temperature, iron(III) concentration, initial sulphuric acid concentration, oxygen flow rate and chloride ions addition on cobalt and nickel leaching were examined. The obtained results show, that enhancing investigated leaching parameters increases both the rate and leaching recovery of nickel and cobalt. The effect of iron(III) ions concentration is particularly significant. Additionally, a significant correlation between copper and nickel/cobalt leaching recovery was observed. Due to the fine dissemination of nickel and cobalt, they were leached remarkably faster when copper leaching recovery exceeded 90%.
Źródło:
Physicochemical Problems of Mineral Processing; 2015, 51, 1; 191-203
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pressure leaching of sulfide concentrate produced by Lubin Concentrator (KGHM Polska Miedz SA, Poland)
Autorzy:
Matuska, S.
Ochromowicz, K.
Chmielewski, T.
Powiązania:
https://bibliotekanauki.pl/articles/110420.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
hydrometallurgy
copper concentrates
pressure leaching
Opis:
The rapidly declining quality of ores and concentrates produced by Lubin Concentrator (KGHM) makes the flotation concentrates exceptionally difficult-to-process by flash smelting. Currently, a hydrometallurgical process, using sulfuric acid with the presence of oxidants as a leaching medium, seems to be either a reasonable alternative or a complementary option to pyrometallurgy. The unique lithological, mineralogical and chemical properties of the concentrate were considered in a selection of the process route. Results of a pressure leaching of the copper sulfide concentrate from Lubin Concentrator (ZWR Lubin) with oxygenated aqueous H2SO4 solutions are presented. The effect of temperature from 120 to 200 °C, initial concentration of H2SO4 from 60 to 100 g/dm3, and oxygen partial pressure ranging from 0.5 to 2.0 MPa were investigated. The pressure leaching appeared to be an efficient process for recovering copper from the Lubin concentrate. At optimal leaching conditions (140 °C, 100 g/dm3 H2SO4, 1.0 MPa O2) 96% of Cu was extracted after 4 h.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 3; 781-792
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oxidative pressurized acid leaching of waste printed circuit boards
Autorzy:
Lundstrom, M.
Seisko, S.
Jascisak, J.
Orac, D.
Aromaa, J.
Havlik, T.
Forsen, O.
Powiązania:
https://bibliotekanauki.pl/articles/109824.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
batch leaching
sulfuric acid
copper
tin
gas formation
Opis:
The amount of waste printed circuit board (WPCB) increases continuously. There is an economic and environmental need to recover valuable metals from WPCBs. In this study, the applicability of oxidative pressurized acid leaching of WPCBs rich in copper and tin was investigated. The effect of leaching parameters such as temperature, partial oxygen pressure and chloride concentration on metal dissolution from WPCBs was studied in sulfuric acid media. It was shown that non-metallic elements present in WPCBs initiated gas formation, namely CO2 and CO, during oxidized pressure acid leach. Decomposition of plastic components already started at 90 °C with 1.5 MPa oxygen overpressure in the presence of 1 g/dm3 chlorides. Gas formation was shown to have a negative impact on the process since copper extraction was reduced to 27% compared to 80-90% extraction achieved from anode slimes used as a reference material. It was suggested that gas formation related to plastic components could have a severe impact on metal yields. The highest dissolution of tin equal to 36% was achieved at room temperature. It was found that higher temperature promoted tin hydrolysis.
Źródło:
Physicochemical Problems of Mineral Processing; 2017, 53, 2; 781-792
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Method of utilization of the spent vanadium catalyst
Autorzy:
Mazurek, K.
Grzesiak, P.
Drużyński, S.
Kiełkowska, U.
Wróbel, A.
Szalla, A.
Powiązania:
https://bibliotekanauki.pl/articles/778811.pdf
Data publikacji:
2018
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
potassium hydroxide
spent vanadium catalysts
leaching
recovery
ion exchange
vanadium
copper
zinc
arsenic
lead
Amberlite® IRA958
Dowex® 1X2
Opis:
A spent vanadium catalyst, from the plant of metallurgical type, was leached in a potassium hydroxide solution to recover vanadium. The effect of time, temperature, concentration of basic, catalyst particle size and phase ratio was studied. The results showed that for a 160–750 μm catalyst leached for 4 h at 313.15 K in the presence of 10% potassium hydroxide solution at a liquid: solid ratio of 20:1, the extent of leaching of V was about 87%. Additionally, separation of vanadium from such a solution was investigated by the ion exchange method. Two types of polymer strongly basic ion exchangers were used. The ion exchange tests indicate that vanadium were loaded from the post-leaching solution with high efficiency. On this basis a flowsheet for the proposed process of a complex utilization of the spent vanadium catalyst is presented.
Źródło:
Polish Journal of Chemical Technology; 2018, 20, 3; 1-7
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Leaching of High Arsenic Content Dust and a New Process for the Preparation of Copper Arsenate
Autorzy:
Sheng, W.
Shen, Y.-Y.
Sheng-Quan, Z.
Powiązania:
https://bibliotekanauki.pl/articles/355005.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
high-arsenic dust
acidic leaching
alkaline leaching
copper arsenate
comprehensive utilisation of esources
Opis:
In this research, the high arsenic content dust of copper smelting, as a raw material, the extraction of copper and arsenic from the high arsenic content dust in the leaching system containing acidic and alkaline compounds was investigated. Meanwhile, the effects of acid/alkaline initial concentration, liquid to solid ratio, leaching temperature, leaching time on the leaching rate of copper and arsenic were studied. The optimum conditions for the leaching of high arsenic content dust and preparation of copper arsenate were determined. The results showed that acidic/alkaline leaching of high arsenic content dust was particularly effective. 93.2% of the copper, and 91.6% of the arsenic were leached in an acidic leaching process and 95% of the arsenic, while less than 3% of the copper, less than 5% of the antimony, less than 2% of the bismuth was also leached in an alkaline leaching process. A new method (the parallel flow drop precipitate method) was developed in the synthesis of copper arsenate process. The parallel flow drop method was employed to adjust the molar ratio (copper to arsenic) of the mixed solution of the acid-leaching solution and the alkali-leaching solution by taking the drop acceleration of an acidic leaching solution and an alkaline leaching solution at 10 mL/min and 12 mL/min, at a temperature of 60°C and a reaction time of 1h. Copper arsenate was prepared by mixing an acidic leaching solution and an alkaline leaching solution. The main phases of copper arsenate were CuHAsO4·1.5H2O and Cu5As4O15·9H2O. Copper arsenate contained 30.13% copper and 31.10% arsenic.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 3; 1167-1172
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laccase treatment of Norway spruce wood surface improves resistance and copper fixation of treated wood
Autorzy:
Vaukner Gabric, M.
Boncina, T.
Humar, M.
Pohleven, F.
Powiązania:
https://bibliotekanauki.pl/articles/52295.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
laccase
treatment
Norway spruce
Trametes versicolor
wood surface
wood decay
resistance
copper leaching
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2016, 59, 198
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of iron selectivity behavior of copper smelter slag flotation tailing with hematitization baking and base metals leaching methods
Autorzy:
Kart, Elif Uzun
Yazğan, Zeynep Hazal
Gümüşsoy, Aleyna
Powiązania:
https://bibliotekanauki.pl/articles/2146871.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
iron selectivity
hematitization baking
copper smelter slag flotation tailing
base metal leaching
Opis:
In this study, iron selectivity behaviour of copper smelter slag (CSS) flotation tailings (38.08% Fe, 0.35% Cu, 4.48% Zn, 0.16% Co, 0.37% S) having fayalite and magnetite as major minerals was investigated with hematitization baking and base metals leaching methods using mineralogical and chemical analyses. For selectivity of iron, it was baked at temperatures of 650-690-700-710-730°C. The aim of the baking is to transform the almost all of the iron in the fayalite into the oxidized (non-soluble) form and the base metals into the sulphated (soluble) form. The temperature that had the lowest hematitization rate of iron was found to be 650°C, and the highest temperature was found to be 730°C. To examine the dissolution behaviour of baked CSS flotation tailing was leached at 50°C at a 1/10 (w/v) for 1 hour by using water. After baking at 690°C calcine and leaching residue, S values were determinated to be approximately 17% and 9%, respectively. Baking made at 700⁰C, amount of sulfate also decreased to 10% and S content was measured as 4% of its leaching residue. As a result of this study, 690⁰C/700⁰C was determined as optimum conditions of hematitization baking and base metals were extracted selectively when the iron was remained at leaching residue in Fe2O3 phase. It was determined that, hematitization is high and the sulphates of the base metals are preserved at 700⁰C temperature. The fayalite phase completely decomposed into Si-O/Fe-O/Zn-S-O/Co-S-O compounds at 700⁰C baking which was the highest iron selective and base metals dissolute temperature.
Źródło:
Physicochemical Problems of Mineral Processing; 2021, 57, 5; 164--175
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
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