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Tytuł:
Ore Microscopy Characterization as a Mineral Processing Control
Mikroskopowa charakterystyka rudy jako kontrola przetwarzania minerału
Autorzy:
Tomanec, R.
Cablik, V.
Simovic, I.
Gacina, R.
Powiązania:
https://bibliotekanauki.pl/articles/318371.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
applied ore microscopy
copper ore
mineral liberation
mikroskopia rudy
rudy miedzi
minerały uwolnione
Opis:
The mineral deposit Bor-Cerovo is a relatively simple Cu-(Fe)ore that is becoming poorer and more complex in texture with the depth of mining. The Bor Copper Mine has expanded mine workings to the Cerovo field margins, where the same type of porphyry copper ore was found for which the Bor Mine is known as one of largest in Europe. Under the oxidized zone in the vertical deposit section lie paragenetic mineral associations typical of the cementated zone, or a transitional layer from the primary mineralized rock. Average concentrations of sulphide copper and oxide copper in the primary rock range from 0.263% to 0.164% and from 0.102% to 0.008%, respectively. Concentration of the ore of simple mineral composition has given a product of unsatisfactory both concentrate quality and metal recovery. More study is felt necessary of the structural/textural properties, of the identified mineral relations, and of the rate of mineral product liberation for the given grind fineness. Mineralogical analyses were conducted in the course of laboratory (and technological) tests. It has been learned that chemical analyses of the floatation concentrated material alone were inadequate, especially where complex texture of intergrowths and poor ore were involved. Structural properties and complex integrowths, and concequently low liberation degree, were found to be the reason of poor concentration. This paper discusses importance of the mineral liberation measurement for the technological results of copper ore concentration at the Bor-Cerovo flotation plant, and explains the functional relation between the mineral liberation and the grind fineness. Data on the microscopy of ore texture and the mineral liberation degree presented in this paper are aimed at improving the recovery and grade of chalcopyrite concentrate in the Veliki Krivelj Flotation Plant. Ore microscopy in the laboratory and technological tests indicate that chemical analysis as a tool for monitoring ore flotation is insufficient, especially where the processed ore is complex-textured and poor.
Złoże mineralne Bor-Cerovo jest stosunkowo prostą rudą Cu-(Fe), która staje się uboższa i bardziej złożona w teksturze wraz z głębokością wydobywania. Kopalnia miedzi Bor rozszerzyła prace wydobywcze do granic obszaru Cerovo gdzie znaleziono ten sam typ porfirowej rudy miedzi, z którego kopalnia Bor jest znana jako największa w Europie. Poniżej strefy utlenionej w pionowej strefie złoża znajduje się zespół paragenetycznego minerału typowego dla strefy cementacji, lub warstwa przejściowa ze skały pierwotnie zmineralizowanej. Średnie stężenie siarczanu miedzi i tlenku miedzi w skale pierwotnej znajduje się w przedziale kolejno od 0,263% do 0,164% oraz od 0,102% do 0,008%. Stężenie w rudzie niezłożonego minerału daje produkt niezadowalający pod względem zarówno jakości koncentratu jak i odzysku metalu. Koniecznych jest więcej badań na temat właściwości strukturalnych/tekstury, identyfikacji zależności minerału, oraz na temat stopnia wyzwalania produktu mineralnego dla danego stopnia rozdrobnienia. Przeprowadzono analizę mineralogiczną podczas badań laboratoryjnych (i technologicznych). Dowiedziano się, że analiza chemiczna i flotacja koncentratu mineralnego była nieadekwatna, szczególnie gdy zaangażowana była skomplikowana struktura narostów między ziarnami i uboga ruda. Odkryto, że właściwości strukturalne i skomplikowane narosty, a co za tym idzie niski stopień uwalniania, były powodem ubogiej koncentracji. Artykuł ten omawia znaczenie pomiarów uwalniania minerału dla wyników technologicznych koncentracji miedzi w rudzie w zakładzie flotacyjnym Bor-Cerovo, i wyjaśnia funkcjonalną zależność miedzi uwalnianiem minerału a stopniem rozdrobnienia. Dane mikroskopowe tekstury rudy i stopnia uwalniania minerału prezentowane w tym artykule mają na celu polepszenie odzyskiwania i stopnia koncentratu chalkopirytu w zakładzie flotacyjnym VelikiKrivelj. Laboratoryjne i technologiczne badania mikroskopowe rudy wykazują, że analiza chemiczna jako narzędzie monitorowania flotacji rudy jest niewystarczająca, szczególnie jeśli przetwarzana ruda ma skomplikowaną teksturę i jest uboga.
Źródło:
Inżynieria Mineralna; 2014, R. 15, nr 2, 2; 101-106
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of organic carbon separation from copper ore by pre-flotation
Autorzy:
Konieczny, A.
Pawlos, W.
Krzeminska, M.
Kaleta, R.
Kurzydlo, P.
Powiązania:
https://bibliotekanauki.pl/articles/109321.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
flotation
carbonaceous matter
copper ore
Opis:
This paper describes possibilities of organic carbon matter separation during a pre-flotation stage in KGHM Polska Miedz, Division of Concentrators. The paper contains a survey of organic carbon removal technologies in worldwide plants as well as KGHM achievements in this field. Laboratory flota-tion testing results have also been described. Next, an industrial scale trial at Polkowice Concentrator has been conducted to confirm the previous laboratory results. The results have been discussed. They indicate a positive role of the pre-flotation stage on organic carbon removal using only frother as the flotation reagent.
Źródło:
Physicochemical Problems of Mineral Processing; 2013, 49, 1; 189-201
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:
Influence of type of lining in high-pressure grinding rolls on effectiveness of copper ore comminution
Autorzy:
Saramak, D.
Foszcz, D.
Gawenda, T.
Konieczny, A.
Pawlos, W.
Powiązania:
https://bibliotekanauki.pl/articles/110528.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
HPGR
comminution
copper ore
high-pressure grinding rolls device
HPGR linings
ore processing
energy consumption
Opis:
Comminution in a High-Pressure Grinding Rolls (HPGR) device is considered as one of the most efficient method to break particles, in terms of the energy utilization. Two main types of the rolls linings are applied in hard ore grinding: studded and hexagonal, which show varied characteristics of operation and have different lifetime of service. The article concerns the analysis of HPGR device operation for various linings of the rolls. Two pilot-scale test programmes were run and performance of both types of rolls was tested in terms of energy consumption, technological effects measured by means of comminution ratio, lifetime service as well as economic aspects. Results of investigation show, that much longer lifetime service was obtained for the studded rolls, while hexagonal ones are more favourable from economic scope. The feed material for the HPGR comminution tests was Polish copper ore from two divisions of processing plants of KGHM Polska Miedz S.A. Taking into account that industrial comminution operations in mining and mineral processing sector consume over 50% of total energy utilized for ore treatment operations, the problem is of a major significance, especially in terms of optimization of hard ore crushing and grinding circuits.
Źródło:
Physicochemical Problems of Mineral Processing; 2016, 52, 1; 182-192
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
In search of an efficient frother for pre-flotation of carbonaceous shale from the kupferschiefer stratiform copper ore
Autorzy:
Kowalczuk, P. B.
Buluc, B.
Sahbaz, O.
Drzymala, J.
Powiązania:
https://bibliotekanauki.pl/articles/109705.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
frother
pre-flotation
copper ore
shale
Opis:
This papers shows that frothers such as aliphatic alcohols (CnH2n+1OH), poly(propylene glycols) (HO(C3H6O)mH), poly(propylene glycol) alkyl ethers (CnH2n+1O(C3H6O)mH) and poly(ethylene glycol) alkyl ethers (CnH2n+1O(C2H4O)mH), can be used for collectorless flotation of a sample of carbonaceous copper shale manually separated from the Kupferschiefer stratiform copper ore. It was shown that flotation is influenced by the type and dose of frothers. The best flotation results were obtained with tri(propylene glycol) butyl ether C4P3, tri(propylene glycol) propyl ether C3P3 and tri(propylene glycol) P3. For these frothers, the yield vs. frother dose relationship was in the form of convex curves indicating that carbonaceous copper shale can float at relatively low dosages of the frother. It means that these frothers can be used for pre-flotation of carbonaceous matter from the investigated copper ore. Other frothers formed concave yield–frother dose relationships and were less effective.
Źródło:
Physicochemical Problems of Mineral Processing; 2014, 50, 2; 835-840
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solvent extraction of copper(ii) from concentrated leach liquors
Autorzy:
Ochromowicz, K.
Chmielewski, T.
Powiązania:
https://bibliotekanauki.pl/articles/109873.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
copper ore
hydrometallurgy
separation
Acorga
LIX
Opis:
Hydrometallurgical treatment of complex copper sulfidic ores, by-products and concentrates requires aggressive, oxidative leaching methods and application of Fe(III) ions and oxygen or bacteria assisted environment. Leach liquors generated in the process are usually copper and iron-rich solutions of high acidity. Such conditions require the application of suitably strong and selective reagent to extract copper in SX operations. This paper discusses the copper extraction behavior of commercial copper rea-gents: LIX 984N, LIX 612N-LV and Acorga M5640. Aqueous feed solutions used in SX studies were PLS’ generated in atmospheric leaching of commercial flotation concentrate, produced at Lubin Concen-trator (KGHM). McCabe-Thiele diagrams were generated and copper net transfer values were compared and discussed. It was shown that stronger modified aldoxime reagents (Acorga, LIX 612) are superior over non-modified salicylaldoxime/ketoxime mixture (LIX 984N). Particularly, the ester modified Acor-ga M5640 showed advantages in recovery and copper net transfer values.
Źródło:
Physicochemical Problems of Mineral Processing; 2013, 49, 1; 357-367
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accuracy of separation parameters resulting from errors of chemical analysis, experimental results and data approximation
Autorzy:
Foszcz, D.
Duchnowska, M.
Niedoba, T.
Tumidajski, T.
Powiązania:
https://bibliotekanauki.pl/articles/109371.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
upgrading curve
approximation
copper ore
flotation
selectivity
Opis:
Accuracy of determination of different separation parameters and selectivity indicators depends on the error of chemical analysis of feed and separation products as well as experimental and approximation errors. In this paper different selectivity parameters were considered which formulae was based on the content of useful component in the feed, concentrate and tailing. It was shown that the impact of chemical analysis on the selectivity parameters was small and the error determined by means of partial derivative approach for a copper ore upgraded by flotation was negligible. Also experimental errors were found to be insignificant. The largest errors occurred for approximation of the upgrading data with inadequately selected selectivity indicators.
Źródło:
Physicochemical Problems of Mineral Processing; 2016, 52, 1; 98-111
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Copper(II) extraction from ammonia leach solution
Autorzy:
Ochromowicz, K.
Jeziorek, M
Wejman, K.
Powiązania:
https://bibliotekanauki.pl/articles/110345.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
hydrometallurgy
hydroxyoximes
LIX
copper ore
copper concentrate
Opis:
Hydrometallurgical processing of copper-bearing materials (ores, concentrates, by-products) is usually done with the use of acidic or ammonia leaching. In the case where a leaching feed material contains significant amounts of carbonate rocks and iron minerals the second method is preferential due to a higher process selectivity. However, it can also be problematic considering possible ammonia transfer during the subsequent extraction process. The paper presents results of extraction of copper(II) from ammonia leach solutions. The effect of a type of extractant, its concentration and type of diluent in organic phase on extraction efficiency and ammonia transfer was studied. A few commercial extractants were examined, namely LIX 84-I, LIX 984N, LIX 54-100. The results clearly indicate that in the case of extraction systems using hydroxyoximes the extraction efficiency is remarkably higher than for βdiketone reagent. Presented studies proved that extraction efficiency of Cu(II) is also dependent on the type of diluent and is less favourable for systems with non-aliphatic diluents. It was observed that ammonia co-extraction occurs and depends on examined parameters. Scrubbing of loaded organic phase showed that ammonia can be removed almost completely using double wash with sulfuric acid solution.
Źródło:
Physicochemical Problems of Mineral Processing; 2014, 50, 1; 327-335
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coupling mineralogy with physicochemical parameters in view copper flotation efficiency improvement
Autorzy:
Naumov, Dejan
Stamenov, Lachezar
Gaydardzhiev, Stoyan
Bouzahzah, Hassan
Powiązania:
https://bibliotekanauki.pl/articles/109556.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
copper ore
flotation
quantitative mineralogy
physicochemical factors
Opis:
The Chelopech epithermal arsenic bearing high-sulphidation, copper-gold deposit located in Bulgaria is often considered as the richest European gold deposit. Selected physicochemical parameters have been measured at key flotation streams inside the processing plant. Sampling campaign has followed with samples being submitted to chemical and mineral liberation analyses. A quantitative analysis has enabled to link copper flotation response to the type of copper bearing minerals and physiochemical parameters such as redox potential (Eh), dissolved oxygen (DO), EDTA extractable Cu and Fe. Data from the mineral liberation analysis (MLA) have highlighted an important process- relevant information explaining the variable floatability in different particle size ranges. A low chalcopyrite recovery can be linked to the non-sufficient amount of dissolved oxygen inside the copper selective flotation. Given the finely-disseminated copper bearing minerals, copper losses due to particle locking could be suggested as well.
Źródło:
Physicochemical Problems of Mineral Processing; 2019, 55, 3; 701-710
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of a high-pressure water jet structure as an innovative tool for pulverizing copper ore in KGHM Polska Miedź S.A.
Autorzy:
Borkowski, P.
Shimizu, S.
Peng, G.
Oguma, Y.
Powiązania:
https://bibliotekanauki.pl/articles/972348.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:
copper ore
comminution
high-pressure water jet
simulations
Opis:
Effective comminution of copper ore for further processing during flotation is still a challenge, both as a technological problem as well as for the high energy costs of such processing. A high-pressure water jet is one alternative method of preparing copper ore for final flotation, causing distinct enlargement of the surface of micronized particles, which could be profitable for copper production. As a consequence of such innovative processing, particles of copper ore become micronized, ensuring grain fractions directly useful for flotation at the exit of the pulverizing apparatus (the hydro-jetting mill).The paper presents some results of simulation as well as describing an analysis of the phenomena occurring inside the high-pressure water and abrasive-water jets of specific structures, elaborated in the aspect of developing hybrid jets of maximum erosive efficiency, potentially useful for effective pulverization.
Źródło:
Mining Science; 2015, 22; 147-159
2300-9586
2353-5423
Pojawia się w:
Mining Science
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:
A hybrid geometallurgical study using coupled Historical Data (HD) and Deep Learning (DL) techniques on a copper ore mine
Autorzy:
Gholami, Alireza
Asgari, Kaveh
Khoshdast, Hamid
Hassanzadeh, Ahmad
Powiązania:
https://bibliotekanauki.pl/articles/2146884.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
hybrid geometallurgy
historical data
deep learning
copper ore
flotation
Opis:
This research work introduces a novel hybrid geometallurgical approach to develop a deep and comprehensive relationship between geological and mining characteristics with metallurgical parameters in a mineral processing plant. This technique involves statistically screening mineralogical and operational parameters using the Historical Data (HD) method. Further, it creates an intelligent bridge between effective parameters and metallurgical responses by the Deep Learning (DL) simulation method. In the HD method, the time and cost of common approaches in geometallurgical studies were minimized through the use of available archived data. Then, the generated DL-based predictive model was enabled to accurately forecast the process behavior in the mineral processing units. The efficiency of the proposed method for a copper ore sample was practically evaluated. For this purpose, six representative samples from different active mining zone were collected and used for flotation tests organized using a randomizing code. The experimental results were then statistically analyzed using HD method to assess the significance of mineralogical and operational parameters, including the proportions of effective minerals, particle size, collector and frother concentration, solid content and pH. Based on the HD analysis, the metallurgical responses including the copper grade and recovery, copper kinetics constant and iron grade in concentrate were modeled with an accuracy of about 90%. Next, the geometallurgical model of the process was developed using the long short-term memory neural network (LSTM) algorithm. The results showed that the studied metallurgical responses could be predicted with more than 95% accuracy. The results of this study showed that the hybrid geometallurgy approach can be used as a promising tool to achieve a reliable relationship between the mining and mineral processing sectors, and sustainable and predictable production.
Źródło:
Physicochemical Problems of Mineral Processing; 2022, 58, 3; art. no. 147841
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metallurgical evaluation of copper ore flotation performance in the presence of Rhamnolipid biosurfactant produced from Pseudomonas aeruginosa. Part 1: Copper-bearing minerals
Autorzy:
Biniaz, Gholamreza
Khoshdast, Hamid
Garmsiri, Mohammad Reza
Maleki-Moghaddam, Mostafa
Hassanzadeh, Ahmad
Powiązania:
https://bibliotekanauki.pl/articles/29552037.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
copper ore
bioflotation
rhamnolipid biosurfactant
metallurgical response
surface adsorption
Opis:
The present research work studies the effect of rhamnolipid biosurfactant (RL) produced from Pseudomonas aeruginosa bacteria on the metallurgical response of a copper ore sample flotation through an extensive full factorial experimental design. Key influential factors including feed particle size, pulp solid content, pH, and dosages of collector, frother and RL biosurfactant were considered. The surface activity of the RL biosurfactant was also studied based on a D-optimal experimental design. Surface activity results revealed that increasing pH and electrolyte concentrations negatively impacted the RL surface activity, while the effect of electrolyte source was dependent on their ionic strength. Metallurgical investigations showed that operating parameters significantly influence the copper grade and recovery with considerable interaction among various parameters. RL biosurfactant was found to negatively decrease the copper grade (~0.5%) and positively enhance the recovery (~3%). Effect of RL was attributed to two potential mechanisms, i.e., being ineffective on copper minerals and/or interaction with gangue minerals, as well as increasing the rate of entrainment due to high foamability, both of which increased non-selective recovery of gangue minerals. Interestingly, regardless of the structural similarities, no interaction between the flotation reagents and rhamnolipid was observed. Fourier-transform infrared (FTIR) spectroscopic analysis of copper minerals, both pure and RL-exposed, showed that there was actually no molecular interaction between RL molecules and particle surface.
Źródło:
Physicochemical Problems of Mineral Processing; 2023, 59, 5; art. no. 183176
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The accuracy of the local assessment of the bulk density of copper-silver deposits in the Legnica-Głogów Copper District and its impact on the valuation of ore resource and mining production
Dokładność lokalnej oceny gęstości objętościowej rud Cu-Ag LGOM i jej wpływ na oszacowanie zasobów złoża i rozliczanie produkcji górniczej
Autorzy:
Mucha, Jacek
Wasilewska-Błaszczyk, Monika
Powiązania:
https://bibliotekanauki.pl/articles/216097.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
bulk density
copper ore
silver ore
deposit resources
Legnica-Głogów Copper District
gęstość objętościowa
rudy miedzi
rudy srebra
zasoby złoża
Legnicko-Głogowski Okręg Miedziowy
Opis:
In the world-class Cu-Ag deposits of the Legnica-Głogów Copper District (LGCD), constant bulk density values are adopted to estimate the ore and metal resources within them based on the results of previous studies of the LGCD deposits carried out at the stage of their exploration and documentation: 2.6 Mg/m3 for the carbonate series, 2.5 Mg/m3 for the shale series, and 2.3 Mg/m3 for the sandstone series. The main purpose of research was to analyze the range of possible differences at local scale of observation between constant values of bulk densities (hereinafter referred to as reference values) assigned during deposit documentation to the main lithological units and bulk densities of these units determined based on the results of experimental sampling of individual lithological units within the exploited copper and silver deposits (Lubin, Polkowice-Sieroszowice and Rudna). In general, when it comes to Cu-Ag LGCD deposits (or their large parts), the relative diversity of estimates of average bulk densities of ores based on the results of experimental sampling (more than 1,600 samples from different individual lithological units were collected at 500 sampling points in mining excavations) and reference values is low (with a median not exceeding 3%). The results of studies indicate, however, that the application of reference bulk densities at the local observation scale may result in significant underestimation (up to nearly 20%) or overestimation (up to 11%) of real bulk densities of the main lithological units. This may have a noticeable impact on the correct estimation of ore and metal resources in small parts of deposits and, as a consequence, hinder the reconciliation of the planned and actual ore mining production.
W światowej klasy złożach Cu-Ag LGCD (the Legnica-Głogów Copper District) do oszacowań zasobów rudy i metali w obrębie trzech głównych serii litologicznych stosuje się stałe wartości gęstości objętościowej przyjęte na podstawie wyników wcześniejszych badań przeprowadzonych na etapie ich rozpoznania i dokumentowania: 2,6 Mg/m3 dla serii węglanowej, 2,5 Mg/m3 dla serii łupkowej oraz 2,3 Mg/m3 dla serii piaskowcowej. Zasadniczym celem badań była analiza zakresu możliwych różnic w lokalnej skali obserwacji między stałymi wartościami gęstości objętościowych przypisywanymi w trakcie dokumentowaniu złóż głównym seriom litologicznym (traktowanych jako wartości referencyjne) oraz gęstościami objętościowymi tych serii wyznaczonymi na podstawie wyników specjalnego opróbowania eksperymentalnego wydzieleń litologicznych szczegółowych w obrębie eksploatowanych złóż Cu-Ag LGCD (Lubin, Polkowice-Sieroszowice i Rudna). W skali całych złóż Cu-Ag LGCD względne zróżnicowanie ocen średnich gęstości objętościowych kopaliny dokonanych na podstawie wyników opróbowania eksperymentalnego (około 1600 prób z różnych wydzieleń litologicznych szczegółowych na 500 stanowiskach opróbowań w wyrobiskach górniczych) i wartości referencyjnych jest małe, z medianą nieprzekraczającą 3%. Wyniki przeprowadzonych badań wskazują, że przy stosowaniu wartości referencyjnych w lokalnej skali obserwacji może dochodzić do znaczącego niedoszacowania (do blisko 20%) lub przeszacowania (maksymalnie do 11%) rzeczywistych gęstości objętościowych głównych serii litologicznych. Może to mieć już zauważalny wpływ na poprawność oszacowania zasobów rudy i metali w niewielkich partiach złóż i w konsekwencji utrudniać rozliczenie prognozowanych zasobów rudy i Cu z wielkościami stwierdzanymi w wydobytym urobku.
Źródło:
Gospodarka Surowcami Mineralnymi; 2019, 35, 4; 47-68
0860-0953
Pojawia się w:
Gospodarka Surowcami Mineralnymi
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geologiczno-miernicze oprogramowanie do odbioru robót górniczych złóż rud miedzi w O/ZG Polkowice-Sieroszowice, od pomysłu do realizacji
Development of the computer management system of mining production settlements in Polkowice-Sieroszowice mine from the ides to the realization
Autorzy:
Jedlecki, R.
Kubiak, J.
Pasternak, G.
Sikora, L.
Powiązania:
https://bibliotekanauki.pl/articles/171104.pdf
Data publikacji:
2011
Wydawca:
Poltegor-Instytut Instytut Górnictwa Odkrywkowego
Tematy:
złoża rud miedzi
roboty górnicze
Polkowice-Sieroszowice
copper ore
mining works
Opis:
W kopalni „Polkowice-Sieroszowice"prowadzi się comiesięczną ewidencję wykonanych robót górniczych. Dotychczas najsłabszą stroną przeprowadzania tych obliczeń był brak odpowiednich narzędzi dla służby geologicznej. Dzięki, "Oprogramowaniu Odbiorowemu " można szybciej i precyzyjniej przeprowadzić wielowariantową analizę parametrów geologicznych, dzięki, której można dokładniej obliczyć te parametry, trwale zapisując je w cyfrowej bazie danych „ Oracle ". Poprzez zapytania do bazy (SQL) można w każdej chwili uzyskać informacje, zarówno liczbowe jak i graficzne, dotyczące przeprowadzonych obliczeń, programowanie budowano wykorzystując doświadczenie geologów górniczych z kopalni we współpracy z informatykami z firmy SHH z Wrocławia.
In Polkowice-Sieroszowice mine the summary report of the mining activities is done monthly. So far, the weakest point of initiations that have been done was lack ofproper tools for the geological department: Thanks to "reception application" carrying out the calculations mentioned above can be done faster and more efficiently. The calculations can also be permanently Corded in the "Oracle " data base. Through the question to the data base (SQL) the information either in form of numbers or graphic can be received regarding the calculations carried out. The application was built with the use of experience of geologists working for our mine, in co-operation with computer scientists working for SHH company situated in Wrocław.
Źródło:
Górnictwo Odkrywkowe; 2011, 52, 1-2; 67-72
0043-2075
Pojawia się w:
Górnictwo Odkrywkowe
Dostawca treści:
Biblioteka Nauki
Artykuł

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