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Tytuł:
Role of Oxidizing Agents in Leaching Process of Electronic Waste
Autorzy:
Lisińska, M.
Saternus, M.
Willner, J.
Fornalczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/352176.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ozone
leaching process
electronic waste
metals recovery
Opis:
New technologies and the globalization of the electrical and electronic equipment market cause a continuous increase in the amount of electrical and electronic waste. They constitute one of the waste groups that grows the fastest in quantity. The development of the new generation of electrical and electronic devices is much faster than before. Recently attention has been concentrated on hydrometallurgical methods for the recovery of metals from electronic waste. In this article the role of an oxidizing agent, mainly ozone and hydrogen peroxide was presented in hydrometallurgical processes. Leaching process of printed circuits boards (PCBs) from used cell phones was conducted. The experiments were carried out in the presence of sulfuric acid and ozone as an oxidizing agent for various temperatures, acid concentration, ozone concentration. As a result, the concentrations of copper, zinc, iron and aluminum in the obtained solution were measured. The obtained results were compared to results obtained earlier in the presence of hydrogen peroxide as an oxidizing agent and discussed.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 2; 969-974
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of usage efficiency of multistage filters on mineral leaching process
Autorzy:
Alibayeva, K. A.
Kuljabekov, A. B.
Tungatorova, M. S.
Kaltayev, A.
Powiązania:
https://bibliotekanauki.pl/articles/298747.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
wells
wellbore
porosity
permeability
Darcy's law
Dupuit law
multi-stage filter setting
Opis:
In this work the numerical study of the usage efficiency of the multistage filters setting technology on the process of mineral extraction by the in-situ leaching method is carried out on the basis of mathematical simulation. A comparison of the extraction degree at single and multistage filters is implemented. Obtained decisions for a multistage filters setting qualitatively conform to the experimental findings.
Źródło:
AGH Drilling, Oil, Gas; 2013, 30, 1; 19-35
2299-4157
2300-7052
Pojawia się w:
AGH Drilling, Oil, Gas
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Peat and lignite leaching process with tetralin in autoclave to produce oil
Autorzy:
Depci, T.
Karta, M.
Powiązania:
https://bibliotekanauki.pl/articles/110838.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
leaching
Adiyaman peat
Elbistan lignite
paraffinic-low waxy oil
Opis:
Instead of directly burning a lignite having low calorific value and peat, the Elbistan lignite (L) and the Adiyaman peat (P) were mixed and leached in an autoclave to obtain an oil to not only provide the demand for energy but also protect the environment. The effects of the peat ratio in the mixture on the properties of co-liquefaction products (oil, char, asphaltene, and preasphaltene) and oil yield were investigated in details. The products were characterized by XRD, FTIR, and elemental analysis. In addition, the composition of the oil was identified by GC/MS, showing that the peat ratio did not affect the chemical composition of the oil due to the high lignin content and the nearly same elemental compositions. On the other hand, the oil yield for a co-liquefaction process was found as 34.3% to be higher than the average value of oil yields obtained from the individual feeds (24.3% for lignite and 28% for peat), showing the synergistic effects between the lignite and peat. The obtained oil was paraffinic-low waxy oil with 5138.62 kcal/kg of calorific value and 0.94 g/cm3 density. Finally, it was suggested that the production of a more valuable product using the peat and the lignite having low calorific value will not only contribute more to the country's economy in future but also be better for the environment, instead of directly burning them.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 2; 334-342
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seepage mechanism during in-situ leaching process of weathered crust elution-deposited rare earth ores with magnesium salt
Autorzy:
Liu, Defeng
Zhang, Zhenyue
Chi, Ruan
Powiązania:
https://bibliotekanauki.pl/articles/110849.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
seepage mechanism
weathered crust elution-deposited rare earth ores
in-situ leaching
magnesium salt
Opis:
To reveal seepage mechanism during in-situ leaching process of weathered crust elution deposited rare earth ores with magnesium salt, the effects of particle gradation, particle migration, Atterberg limit on the permeability coefficient were investigated, and the relation between the particle size and rare earth content was discussed. The results showed that the ore in the humic layer (HL) with high porosity and permeability was uniformly graded particles. The ore in the completely weathered layer (CWL) with low porosity and permeability belonged to dense-graded particles. The ore in the partly weathered layer (PWL) was open-graded particles, whose permeability fell in between the HL and the PWL. The change of -0.075mm particles content was the largest in the leaching process. When - 0.075mm particle content was less than 30%, the migration ability of fine particles and the permeability coefficient decreased gradually. On the contrary, the migration ability of fine particles gradually remained stable, and the change in the permeability coefficient was not obvious. The liquid limit (LL) in the Atterberg limit of HL, CWL and PWL was inversely proportional to the permeability coefficient, and followed the order: LLHL < LLPWL < LLCWL. With the -0.075mm particle content increasing, the LL of the ore samples increased gradually and finally tended to be stable. The peak value of rare earth concentration appeared earlier and the rare earth content decreased gradually with the increase of the ore particle size. This work provided a theoretical basis for achieving high-efficient mining of weathered crust elution-deposited rare earth ores.
Źródło:
Physicochemical Problems of Mineral Processing; 2020, 56, 2; 350-362
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization and treatment of clayey waste using a sulfuric acid roasting-water leaching process for the extraction of lithium
Autorzy:
Obut, Abdullah
Aktosun, Zeynep
Girgin, İsmail
Deveci, Hacı
Yörükoğlu, Abdulkerim
Powiązania:
https://bibliotekanauki.pl/articles/2146902.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
Kırka boron plant
lithium
smectite
sulfuric acid roasting
water leaching
Opis:
In this study, a detailed characterization of the clayey waste of the Kırka boron plant was undertaken before the development of a sulfuric acid roasting-water leaching process for the extraction of lithium from this waste. The effects of roasting temperature (650-800°C) and sulfuric acid/waste ratio (90-260 kg H2SO4/1000 kg waste on a dry basis) on the extraction of lithium were investigated. By roasting the waste sample, which contained 0.37% Li2O with dolomite, smectite and borax as the main phases, at temperatures between 650°C and 800°C in the absence of sulfuric acid as the additive, CaMgSiO4 was found to form as the dominant phase after the decomposition of dolomite and smectite present in the sample. On the other hand, the X-ray diffraction analyses of the waste sample subjected to sulfuric acid treatment without roasting showed the in-situ formation of various hydrated calcium sulfate phases for all sulfuric acid/waste ratios tested. Besides, at the highest acid/waste ratio of 260, a hydrated magnesium sulfate phase was also identified in the sample. The application of the sulfuric acid roasting-water leaching process under the optimum roasting temperature of 750°C and the acid/waste ratio of 180 was found to lead to a lithium extraction of 85.7%. The applied sulfuric acid roasting-water leaching process appeared to be an attractive process with its attributes including low roasting temperature, high extraction percentage and no requirement for gypsum as the external sulfation agent.
Źródło:
Physicochemical Problems of Mineral Processing; 2022, 58, 4; art. no. 149635
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Basic theory and optimization of gold containing antimony concentrate leaching by alkaline sulfide
Autorzy:
Wu, Hao
Feng, Yali
Li, Haoran
Liao, Shengde
Wang, Hongjun
Powiązania:
https://bibliotekanauki.pl/articles/109524.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
antimony concentrate
leaching process
alkaline leaching
kinetics
Opis:
As sodium sulfide is easily oxidized to polysulfide and thiosulfate which have a gold leaching effect, gold would dissolve in leaching solution when extracting stibium from gold containing antimony concentrate by alkaline sulfide. Through leaching test and kinetics analysis, the decomposition regularity of sodium sulfide and leaching rate were studied under different leaching conditions. The results indicated that the gold content in antimony concentrate was 28.41g/Mg, and the content of antimony and sulfur was 36.01% and 14.04%, respectively. The main metallic minerals were native gold, arsenopyrite, stibnite, and the gangue minerals were mainly quartz. Anodic polarization curve shows reduced iron powder can increase the peak potential of the oxidation of the leaching solution and it can effectively prevent the decomposition of sodium sulfide and the dissolution of gold. Optimized stibium-extraction efficiency was achieved under the following conditions: a concentration of sodium sulfide and sodium hydroxide at 110g/dm³ and 20g/dm³, respectively; a ratio of iron powder to concentrate of 1:30; a ratio of liquid to solid of 5:1; agitation speed of 600rad/min; reaction temperature of 353.15K; and a reaction time of 3 h. Under the optimized conditions, high antimony recovery (97.35%) and low gold dissolution (1.32%) were achieved.
Źródło:
Physicochemical Problems of Mineral Processing; 2019, 55, 1; 248-257
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selective extraction of vanadium from vanadium-titanium magnetite concentrates by non-salt roasting of pellets-H2SO4 leaching process
Autorzy:
Luo, Yi
Che, Xiaokui
Wang, Haixia
Zheng, Qi
Wang, Lei
Powiązania:
https://bibliotekanauki.pl/articles/1445902.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
vanadium-titanium magnetite
pellets
selective extraction
sulfuric acid leaching
Opis:
In this work, a novel process of pellet non-salt roasting and H2SO4 leaching was proposed for the selective extraction of vanadium from vanadium–titanium magnetite concentrate. Vanadium can be leached but the iron impurity was maintained in the pellets. Moreover, the leached pellets can meet the quality requirements of the iron-making process after secondary roasting, realizing comprehensive utilization. The maximal vanadium leaching efficiency was up to 60.3%, whereas 0.17% of the iron impurity was leached. The optimum conditions of pellet roasting and leaching were obtained by single-factor experiments. The X-ray diffraction and scanning electron microscopy–energy disperse X-ray spectrometry analyses showed that the vanadium iron spinel can be oxidized and decomposed into Fe2O3 and vanadate during the roasting process. Given that dilute sulfuric acid can react with vanadate without reacting with Fe2O3 in the leaching process, selective vanadium extraction was realized. This work provides new insights into the industrial production of vanadium–titanium magnetite concentrate involving the direct extraction of vanadium.
Źródło:
Physicochemical Problems of Mineral Processing; 2021, 57, 4; 36-47
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A quasi-stationary model of salt leaching
Quasi-stacjonarny model ługowania soli
Autorzy:
Rybka, J.
Urbańczyk, K.
Powiązania:
https://bibliotekanauki.pl/articles/2192084.pdf
Data publikacji:
2017
Wydawca:
Polskie Stowarzyszenie Górnictwa Solnego
Tematy:
leaching process modelling
solution mining
rock salt
modelowanie procesu ługowania
eksploatacja otworowa
sól kamienna
Opis:
In classical models of the cavern leaching process, brine concentration is determined by calculating the increase (or decrease) of concentration in successive time-steps, based on the salt balance. In a quasi-stationary model it is assumed that changes in brine concentration are negligible in the balance. Consequently, a concentration needs to be found at which the leaching rate allows temporary concentration stability to be achieved. Here, both types of models are compared, using the simplest case possible, namely the beginning of initial cut leaching by the method of direct water and brine circulation with an isolated cavern roof. In the case of cylindrical shape of the cavern, both models are compatible. The quasi-stationary model does not take into account the leaching history, as it determines its variable asymptote rather than the brine concentration itself. In the case considered, the formula of the quasi-stationary model is so simple that calculations can be made using an MS Excel spreadsheet. However, in the general case, the algorithm of the quasi-stationary model is much more complicated than that of the classical model, especially if the cavern shape is complex and the method of reverse circulation is applied during the cavern leaching process.
W klasycznych modelach procesu ługowania kawern stężenie solanki wyznacza się przez obliczenie jego przyrostu (lub spadku) w kolejnych krokach czasowych na podstawie bilansu soli. W quasi-stacjonarnym modelu zakłada się, że przyrost stężenia jest pomijalny i wyznacza się takie stężenie, przy którym szybkość ługowania zapewnia chwilową stacjonarność stężenia. Oba modele są tu porównane na najprostszym przypadku – początku ługowania wrębu, w prawym obiegu wody i solanki oraz z izolacją stropu. Oba modele są zgodne, dopóki kształt kawerny jest walcem. Model quasi-stacjonarny nie bierze pod uwagę historii ługowania i nie tyle wyznacza stężenie, ile jego zmienną asymptotę. W rozpatrywanym przypadku formuła quasi-stacjonarnego modelu jest tak prosta, że obliczenia można wykonać w arkuszu MS Excela. W ogólnym przypadku algorytm modelu jest dużo bardziej skomplikowany niż w modelach klasycznych, zwłaszcza gdy kształt kawerny nie jest prosty i stosuje się obieg lewy.
Źródło:
Przegląd Solny; 2017, 13; 66--74
2300-9349
Pojawia się w:
Przegląd Solny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The release of leachable constituents from copper slag depending on conditions of the leaching process
Uwalnianie wymywalnych składników z żużla pomiedziowego w zależności od warunków procesu wymywania
Autorzy:
Mizerna, K.
Kuterasińska, J.
Powiązania:
https://bibliotekanauki.pl/articles/953649.pdf
Data publikacji:
2016
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
cooper slag
leaching
heavy metals
żużel pomiedziowy
wymywalność
metale ciężkie
Opis:
The research on leaching of waste components is one of the methods for assessing the level of their contamination by soluble forms of heavy metals. The process of leaching depends on several factors, which change can cause a release of contaminants at different levels. The study presents the results on leaching of Cl–, SO4 2–, Fe, Na, K and heavy metals (Pb, Cd, Ni, Zn, Cu, Cr) from copper slag, which depends on the pH level of the eluent being used in the research. The research on leaching of heavy metals was also performed at various ratio of liquid to solid (L/S = 10 and 100 dm3/kg) and with using a waste with different sizes of the fraction. There was also analysed the total content of heavy metals in the waste. The highest leaching of Cl–, Cr, Ni, Cu, Pb and Zn was observed with the eluent pH level of 13. Waste grain reduction to the size of < 0.125 mm has caused an increase in the release of copper and zinc into the aqueous phase.
Badanie wymywalności składników odpadów jest jedną z metod oceny poziomu ich zanieczyszczenia rozpuszczalnymi formami metali ciężkich. Przebieg procesu wymywania uzależniony jest od kilku czynników, których zmiana może powodować uwalnianie zanieczyszczeń na różnych poziomach. W pracy przedstawiono wyniki wymywalności Cl–, SO4 2–, Fe, Na, K oraz metali ciężkich (Pb, Cd, Ni, Zn, Cu, Cr) z żużla pomiedziowego w zależności od pH cieczy wymywającej użytej w badaniu. Badanie wymywalności metali ciężkich przeprowadzono także przy różnym stosunku cieczy do ciała stałego (L/S = 10 i 100 dm3/kg) oraz z wykorzystaniem odpadu o różnej wielkości frakcji. Dokonano także analizy zawartości ogólnej metali ciężkich w odpadzie. Zaobserwowano najwyższą wymywalność Cl–, Cr, Ni, Cu, Pb i Zn przy pH cieczy wymywającej na poziomie 13. Redukcja ziaren odpadu do wartości < 0,125 mm spowodowała wzrost uwalniania miedzi i cynku do fazy wodnej.
Źródło:
Ecological Chemistry and Engineering. A; 2016, 23, 1; 101-110
1898-6188
2084-4530
Pojawia się w:
Ecological Chemistry and Engineering. A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of leaching solution pH and addition of peroxide hydrogen on the recovery of some components from the used vanadium catalyst with urea solutions
Autorzy:
Mazurek, K.
Trypuć, M.
Białowicz, K.
Drużyński, S.
Powiązania:
https://bibliotekanauki.pl/articles/779484.pdf
Data publikacji:
2008
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
kwas siarkowy
tlenek siarki
mocznik
katalizator wanadowy
ługowanie
sulfuric acid
sulfur oxide
urea solutions
used vanadium catalysts
leaching process
Opis:
The research was conducted to determine the influence of the pH of the leaching solutions and hydrogen peroxide addition on the efficiency of the recovery of vanadium, potassium and iron compounds from the used vanadium catalyst from the node of oxidation of sulfur dioxide to sulfur trioxide.
Źródło:
Polish Journal of Chemical Technology; 2008, 10, 4; 34-36
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Separation of nickel and iron from lateritic ore using a digestion – roasting – leaching – precipitation process
Autorzy:
Basturkcu, H.
Acarkan, N.
Powiązania:
https://bibliotekanauki.pl/articles/109861.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
laterite
digestion
roasting
salt addition
leaching
precipitation
Opis:
This paper investigates extraction of nickel and iron from a lateritic nickel ore from the Caldag region of Manisa in Turkey. The ore sample contains 1.2% Ni, 24.77% Fe and 0.062% Co. The process applied includes digestion with 40 wt-% sulfuric acid at 200 C for 60 min, roasting at 700 C for 15 min, leaching with water for 30 min at 1:5 solid/liquid ratio (by weight) and precipitation of the remaining iron at pH 3 and 60 C. In order to improve nickel and cobalt extractions using the digestion-roasting- leaching-precipitation process (DRLP), Na2SO4 addition in the roasting stage was examined. Under the optimum conditions and in the presence of Na2SO4, 86.2% Ni and 94.2% Co extractions were obtained with almost zero iron content. As a result, 2.07 g dm-3 Ni, 0.12 g dm-3 Co and 0.05 g dm-3 Fe could be achieved in the pregnant leach solution within nearly 2.5 hours.
Źródło:
Physicochemical Problems of Mineral Processing; 2016, 52, 2; 564-574
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilization of used contact masses from the oxidation state of sulfur(IV) oxide to suIfur(VI) oxide
Autorzy:
Trypuć, M.
Mazurek, K.
Kiełkowska, U.
Drużyński, S.
Powiązania:
https://bibliotekanauki.pl/articles/777950.pdf
Data publikacji:
2007
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
kwas siarkowy
tlenek siarki
mocznik
katalizator wanadowy
ługowanie
sulfuric acid
sulfur oxide
urea solutions
used vanadium catalysts
leaching process
Opis:
The research was conducted to determine the influence of the urea concentration in the leaching solutions on the efficiency of recovery of vanadium and iron compounds from the used vanadium catalyst from the node of oxidation of sulfur dioxide to sulfur trioxide.
Źródło:
Polish Journal of Chemical Technology; 2007, 9, 3; 26-28
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mass transfer process of leaching weathered crust elution-deposited rare earth ore with magnesium salts
Autorzy:
Chen, Z.
Zhang, Z.
He, Z.
Chi, R.
Powiązania:
https://bibliotekanauki.pl/articles/110343.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
mass transfer
magnesium salts
theory plate
weathered crust elution-deposited rare earth ore
Opis:
In order to optimize the leaching process of weathered crust elution-deposited rare earth ore with magnesium salts, the influence of different flow rate, concentration of magnesium ions, initial pH of magnesium salts solution and experimental temperature on the mass transfer process of rare earth and aluminum was investigated in the case of using magnesium salts as leaching agent. The relationship between the flow rate μ and the HETP (Height Equivalent of Theoretical Plate) is in accordance with the Van Deemter equation when magnesium salts were used as leaching agent. The optimum condition for rare earth and aluminum were 0.4 cm3/min of flow rate and 0.2 mol/dm3 of magnesium ion concentration of magnesium sulfate, magnesium chloride and magnesium nitrate respectively. Under this condition the mass transfer efficiency of rare earth and aluminum with three kinds of magnesium salts follow the order of Mg(NO3)2>Mg(Cl)2>MgSO4. High temperature contributes to improving the mass transfer efficiency of rare earth and aluminum. Magnesium nitrate as the leaching agent can get the highest leaching mass transfer efficiency of rare earth and magnesium sulfate as the leaching agent can make the impurity leaching and mass transfer efficiency of Al is the lowest.
Źródło:
Physicochemical Problems of Mineral Processing; 2018, 54, 3; 1004-1013
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
In-situ leaching of limestone in the process of water drainage in Zn-Pb ore mines
Autorzy:
Kupich, I.
Girczys, J.
Powiązania:
https://bibliotekanauki.pl/articles/110232.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
lead
zinc
fine-grained limestone
discharged water treatment
drainage
market product
Opis:
The necessary drainage and dewatering system of the exhausted and closed Zn-Pb ore mines in the Bytom area in Poland can be treated as a process of in situ leaching of sparingly soluble minerals from the disturbed rock mass. The slimes obtained from the discharged water treatment are considered to be useless material. Currently, their management only increases the cost of water drainage process. The lack of interest in the apparently unattractive market product, and certain formal resistance, result in the fact that the dewatering technological line has not been closed at a level of the intentionally conducted process of in situ leaching. The paper presents the authors’ conception of winning useful, fine-grained limestone by modification of currently used technology of discharged water treatment from heavy metals (Zn, Pb and Cd). The essence of the process is receiving two products: cleaned water and mineral material having various possible applications.
Źródło:
Physicochemical Problems of Mineral Processing; 2017, 53, 1; 240-248
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ANFIS based prediction of the aluminum extraction from boehmite bauxite in the Bayer process
Autorzy:
Mihajlović, I.
Đurić, I.
Živković, Ž.
Powiązania:
https://bibliotekanauki.pl/articles/779072.pdf
Data publikacji:
2014
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
leaching
bauxite
Bayer process
statistical modeling
ANFIS
Opis:
This paper presents the results of nonlinear statistical modeling of the bauxite leaching process, as part of Bayer technology for alumina production. Based on the data, collected during the year 2011 from the industrial production in the alumina factory Birač, Zvornik (Bosnia and Herzegovina), nonlinear statistical modeling of the industrial process was performed. The model was developed as an attempt to define the dependence of the Al2O3 degree of recovery as a function of input parameters of the leaching process: content of Al2O3, SiO2 and Fe2O3 in the bauxite, as well as content of Na2Ocaustic and Al2O3 in the starting sodium aluminate solution. As the statistical modeling tool, Adaptive Network Based Fuzzy Inference System (ANFIS) was used. The model, defined by the ANFIS methodology, expressed a high fitting level and accordingly can be used for the efficient prediction of the Al2O3 degree of recovery, as a function of the process inputs under the industrial conditions.
Źródło:
Polish Journal of Chemical Technology; 2014, 16, 1; 103-109
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 30

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