Temat: leaching process - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Między teorią a praktyką (Proces ługowania kawern solnych cz. IV)
Between theory and practice. (Salt cavern leaching process p. IV)
Autorzy:: Urbańczyk, Kazimierz
Tematy:: kawerna solna
modelowanie procesu ługowania
ługowanie
salt cavern
modeling of leaching process
leaching; Pokaż więcej
Wydawca:: Polskie Stowarzyszenie Górnictwa Solnego
Powiązania:: https://bibliotekanauki.pl/articles/2192026.pdf Link otwiera się w nowym oknie
Opis:: Omówione są praktyczne zastosowania modelu komputerowego przy projektowaniu kawern solnych oraz przy monitorowaniu procesu ich ługowania. Poruszono takie zagadnienia, jak zgodność prognozy z rzeczywistym ługowaniem, uzgodnienie modelu z historią ługowania tj. dopasowanie modelu do wydobycia soli oraz dopasowanie do kształtu zmierzonego przez echosondę.
Application of the computer model in the mining practice is presented in the paper. Designing of salt caverns and monitoring of the actual leaching process are discussed. Such issues as agreement of simulation with the leaching process, history match i.e. adjustment to the salt production and adjustment to the sonar survey are mentioned.
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Applicability of published experimental works as a knowledge source in recommendation of gold ore processing workflows
Autorzy:: Rintala, L.
Aromaa, J.
Forsen, O.
Tematy:: gold ore
leaching
case-based reasoning
process development; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/109780.pdf Link otwiera się w nowym oknie
Opis:: The experimental work is the most time consuming and expensive part of the process design. A case-based reasoning (CBR) methodology can be used to assist in the process design. Auric Adviser is a CBR system under development for recommendation of gold ore processing workflows. In Auric Adviser the knowledge in gold ore processing is represented in two models. The first model holds the knowledge needed to recommend process chains already used in industry. The second knowledge model is intended to recommend the most efficient unit processes based on research results. The objective of this study was to analyse the information richness of journal articles and other publications concerning single process steps of gold extraction. The aim was to study the applicability of these publications as a source for the second Auric Adviser knowledge model. In this study, 25 publications concerning leaching of gold were analysed and information was extracted in a case base. The case base was taken as either a process or experimental description with clearly defined differences to other descriptions. In total, 218 cases that described results of gold leaching were extracted from the sources. The analysis of descriptions showed that the knowledge necessary for design the second Auric Adviser model can be elicited from journal articles and other publications concerning single process steps. The trends in the case description were that the gold content and process outcome were usually well described. Nevertheless, the information richness varied in descriptions of raw materials, experimental arrangements but the results were often missing details. The incompleteness of information causes challenges in the process comparison although it does not prevent the CBR system to work.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: ANFIS based prediction of the aluminum extraction from boehmite bauxite in the Bayer process
Autorzy:: Mihajlović, I.
Đurić, I.
Živković, Ž.
Tematy:: leaching
bauxite
Bayer process
statistical modeling
ANFIS; Pokaż więcej
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Powiązania:: https://bibliotekanauki.pl/articles/779072.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Processes and technologies for the recycling of spent fuorescent lamps
Autorzy:: Kujawski, W.
Pospiech, B.
Tematy:: fluorescent lamps
recycling
rare earth elements (REE)
hydrometallurgical process
pyrometallurgical
process
solvent extraction
leaching; Pokaż więcej
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Powiązania:: https://bibliotekanauki.pl/articles/780020.pdf Link otwiera się w nowym oknie
Opis:: The growing industrial application of rare earth metals led to great interest in the new technologies for the recycling and recovery of REEs from diverse sources. This work reviews the various methods for the recycling of spent fluorescent lamps. The spent fluorescent lamps are potential source of important rare earth elements (REEs) such as: yttrium, terbium, europium, lanthanum and cerium. The characteristics of REEs properties and construction of typical fluorescent lamps is described. The work compares also current technologies which can be utilized for an efficient recovery of REEs from phosphors powders coming from spent fluorescent lamps. The work is especially focused on the hydrometallurgical and pyrometallurgical processes. It was concluded that hydrometallurgical processes are especially useful for the recovery of REEs from spent fluorescent lamps. Moreover, the methods used for recycling of REEs are identical or very similar to those utilized for the raw ores processing.
Dostawca treści:: Biblioteka Nauki

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