Gospodarka Surowcami Mineralnymi-Mineral Resources Management最新文献

{"title":"Price trends on the international steam coal market in 2000–2020","authors":"K. Stala-Szlugaj, Z. Grudzinski","doi":"10.24425/gsm.2021.139743","DOIUrl":"https://doi.org/10.24425/gsm.2021.139743","url":null,"abstract":"Approximately 95% of international trade in steam coal is concentrated in two areas: Asia-Pacific and Atlantic. Prices on the international market depend on the largest exporters and users of coal. the aim of the article is to characterize the price trends that took place in the international trade of energy coal in the years 2000–2020 and to distinguish price indices which, in the opinion of the authors, currently play an important role in this trade. the analysis of steam coal prices in international markets in 2000–2020 made it possible to highlight five periods of rising prices, four periods of falling prices, and one period of the stabilisation of prices. A detailed analysis of the highlighted periods of steam coal price fluctuations in 2000–2020 made it possible to identify groups of factors that significantly affect the level of prices of the analyzed coal in the long term. international steam coal markets are interlinked despite periodic volatility. A very important factor influencing world steam coal prices is the situation in China as it is the largest producer, user and importer of steam coal. A small change in coal production in China significantly affects the volume of trade on the international market. Therefore, the level of freight prices is an important factor influencing the price level for the customer. FOb Australia prices are also correlated with coal suppliers to the european market and Asia-Pacific market in this paper. The very high correlation coefficients obtained confirm the close relationship between the prices of these coals. For many years, the European market has no longer been a trendsetter in international coal markets but has instead been affected by general trends. Trendy cenowe na mIędzynarodowym rynku węgla energeTycznego w latach 2000–2020 s ł o w a k l u c z o w e węgiel energetyczny, handel, ceny, rynek spot S t r e s z c z e n i e Handel międzynarodowy węglem energetycznym koncentruje się w około 95% na dwóch obszarach: Azji-Pacyfiku i Atlantyku. Ceny na rynku międzynarodowym zależą od największych eksporterów i użytkowników węgla. Celem artykułu jest scharakteryzowanie trendów cenowych, jakie miały miejsce w międzynarodowym handlu węglem energetycznym w latach 2000–2020 oraz wyróżnienie wskaźników cen, które w opinii autorów odgrywają obecnie istotną rolę w tym obrocie. Analiza cen węgla energetycznego na rynkach międzynarodowych w latach 2000–2020 pozwoliła wyróżnić: pięć okresów wzrostu cen, cztery okresy spadku cen oraz jeden okres stabilizacji cen. szczegółowa 198 Stala-Szlugaj and Grudziński 2021 / Gospodarka Surowcami Mineralnymi – Mineral Resources Management 37(4), 177–198 analiza wyróżnionych okresów wahań cen węgla energetycznego w latach 2000–2020 pozwoliła na wyodrębnienie grup czynników, które istotnie wpływają na poziom cen analizowanego węgla w długim okresie. Międzynarodowe rynki węgla energetycznego są ze sobą powiązane pomimo okresowej zmienności. bardzo ważnym czynnikiem wpływającym na ","PeriodicalId":50416,"journal":{"name":"Gospodarka Surowcami Mineralnymi-Mineral Resources Management","volume":"3 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74290505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The impact of EU Taxonomy regulations on the reporting of Sustainable Development Goals (SDGs) in polish mining","authors":"O. Janikowska","doi":"10.24425/gsm.2022.143627","DOIUrl":"https://doi.org/10.24425/gsm.2022.143627","url":null,"abstract":"The 2030 Agenda for Sustainable Development was adopted in 2015. The United Nations framework does not directly include raw materials in Sustainable Development Goals (SDGs). The mining industry has a great impact not only for the environment but also for its stakeholders, both from the nearest and the most remote surrounding. As such, the mining industry has the opportunity and potential to both positively and negatively impact on all seventeen SDGs. The introduction of the EU directive on the disclosure of non-financial data has a great impact on the reporting of sustainable development reporting. Additionally, in March 2020, the European Commission published the EU Taxonomy. With regard to the current geopolitical situation, some European Union members, such as Germany, France and the Netherlands, have taken the decision to open or re-open of their coal-fired plants. Admittedly, these countries underline that the inclusion of coal in their power industry is only temporary and limited to a well-defined period of time. The implementation of the SDGs should be partially important in the case of mining, the activities of which involve the extraction of various types of mineral resources, especially non-renewable resources. This raises two fundamental research questions; what is the actual level of the reporting of SDGs in the polish mining industry, and if the EU Taxonomy Regulations will increase the reporting of SDGs in Polish mining? 67 Janikowska 2022 / Gospodarka Surowcami Mineralnymi – Mineral Resources Management 38(4), 49–67 WpłyW unijnej taksonomii na raportoWanie CelóW ZróWnoWażonego roZWoju (sDgs) W polskim górniCtWie S ł o w a k l u c z o w e cele Zrównoważonego Rozwoju, taksonomia UE, górnictwo S t r e s z c z e n i e Agenda 2030 na rzecz zrównoważonego rozwoju została przyjęta w 2015 roku. Ramy ONZ nie uwzględniają bezpośrednio surowców mineralnych w Celach Zrównoważonego Rozwoju (SDGs). Jednak przemysł wydobywczy ma znamienity wpływ zarówno na środowisko, jak i na swoich interesariuszy, zarówno z bliskiego, jak i dalszego otoczenia. Tym samym przemysł wydobywczy może wpływać pozytywnie, jak i negatywnie na wszystkie siedemnaście SDGs. Wprowadzenie przez UE dyrektywy w sprawie ujawniania danych niefinansowych przyczyniło się do wzrostu raportowania zrównoważonego rozwoju, co więcej, w marcu 2020 roku Komisja Europejska opublikowała tzw. Taksonomię. Realizacja SDGs powinna być szczególnie istotna w przypadku górnictwa, którego działalność polega na wydobywaniu różnego rodzajów surowców mineralnych, zwłaszcza tych nieodnawialnych. W związku z tym pojawiają się dwa podstawowe pytania badawcze: jaki jest rzeczywisty poziom raportowania SDGs w polskim górnictwie i czy unijna Taksonomia wpłynie znacząco na zwiększenie raportowania SDGs w polskim górnictwie.","PeriodicalId":50416,"journal":{"name":"Gospodarka Surowcami Mineralnymi-Mineral Resources Management","volume":"53 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74460467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of the composition of fly ashwater mixture in terms of minimizing seepage water and the possibility of gravitational hydrotransport into underground workings","authors":"M. Popczyk","doi":"10.24425/122584","DOIUrl":"https://doi.org/10.24425/122584","url":null,"abstract":"of gravitational hydraulic transport of water and ash hydromixtures used in the mining pipeline systems. Each hydromixture produced based on fine-grained wastes is characterized by specified rheological parameters that have a direct impact on the future flow parameters of a given pipeline system. Additionally, the gravitational character of the hydraulic transport generates certain limita-tions concerning the so-called correct hydraulic profile of the system in relation to the applied hydro mixture characterized by required rheological parameters that should ensure safe flow at a correct efficiency. This paper shows an example of optimisation of the composition of a selected fly ash-water hydromixture in relation to its capacity for hydrotransport in gravity pipeline installations, as well as the amount of excess water that will always drain from the location of feeding the hydromixture to the underground workings.","PeriodicalId":50416,"journal":{"name":"Gospodarka Surowcami Mineralnymi-Mineral Resources Management","volume":"14 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78229126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prediction of mineral product price based on mean reversion model","authors":"Shuwei Huang, Ma Zhaoyang, Feng Jin, Yuansheng Zhang","doi":"10.24425/gsm.2022.141665","DOIUrl":"https://doi.org/10.24425/gsm.2022.141665","url":null,"abstract":"The mean-reversion model is introduced into the study of mineral product price prediction. The gold price data from January 2018 to December 2021 are selected, and a mean-reverting stochastic process simulation of the gold price was carried out using Monte Carlo simulation (MCS) method. By comparing the statistical results and trend curves of the mean-reversion (MR) model, geometric Brownian motion (GBM) model, time series model and actual price, it is proved that the mean-reversion process is valid in describing the price fluctuation of mineral product. At the same time, by comparing with the traditional prediction methods, the mean-reversion model can quantitatively assess the uncertainty of the predicted price through a set of equal probability stochastic simulation results, so as to provide data support and decision-making basis for the risk analysis of future economy. Prognozowanie ceny Produktu Mineralnego w oParciu o Model średniej rewersji S ł o w a k l u c z o w e cena produktu mineralnego, model średniej rewersji, symulacja Monte Carlo, analiza niepewności S t r e s z c z e n i e W badaniach predykcji cen produktów mineralnych wprowadzono model średniej rewersji. Wybrano dane dotyczące cen złota od stycznia 2018 do grudnia 2021 r., a symulację ceny złota w procesie odwracania średniej przeprowadzono metodą symulacji Monte Carlo (MCS). Porównując wyniki statystyczne i krzywe trendu modelu średniej rewersji (MR), modelu geometrycznego ruchu Browna (GBM), modelu szeregów czasowych i rzeczywistej ceny, udowodniono, że proces średniej rewersji jest prawidłowy w opisie fluktuacji cen na produkt mineralny. Jednocześnie, porównując z tradycyjnymi metodami predykcji, model średniej rewersji może ilościowo oszacować niepewność przewidywanej ceny za pomocą zestawu wyników symulacji stochastycznej równego prawdopodobieństwa, w celu zapewnienia wsparcia danych i podstawy decyzyjnej do analizy ryzyka przyszłej gospodarki.","PeriodicalId":50416,"journal":{"name":"Gospodarka Surowcami Mineralnymi-Mineral Resources Management","volume":"85 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90640966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Współwystępowanie węglowodorów i siarczków metali. Przykład dolomitów dewońskich w Józefce w Górach Świętokrzyskich","authors":"","doi":"10.24425/122586","DOIUrl":"https://doi.org/10.24425/122586","url":null,"abstract":"","PeriodicalId":50416,"journal":{"name":"Gospodarka Surowcami Mineralnymi-Mineral Resources Management","volume":"37 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80297281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The assessment of heavy metal binding forms in foundry wastes used as raw materials in agrotechnics, construction and road construction","authors":"","doi":"10.24425/gsm.2022.141660","DOIUrl":"https://doi.org/10.24425/gsm.2022.141660","url":null,"abstract":"","PeriodicalId":50416,"journal":{"name":"Gospodarka Surowcami Mineralnymi-Mineral Resources Management","volume":"70 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77383495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Wpływ nowoczesnych płuczek wiertniczych na poprawę sprawności hydraulicznej studni wierconych","authors":"J. Macuda, J. Siemek, S. Wysocki, Magdalena Gaczoł","doi":"10.24425/122587","DOIUrl":"https://doi.org/10.24425/122587","url":null,"abstract":"","PeriodicalId":50416,"journal":{"name":"Gospodarka Surowcami Mineralnymi-Mineral Resources Management","volume":"59 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88642136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Selective flocculation and recovery of chrome from plants limes using starch and sodium oleate as flocculants","authors":"V. Sibanda, LehAnA MAkARA, LeRATO SeBOSe, ThULAgAnyO SeTIMO, T. Mamvura, G. Danha","doi":"10.24425/gsm.2022.143624","DOIUrl":"https://doi.org/10.24425/gsm.2022.143624","url":null,"abstract":"plant in the north west province of South Africa was conducted using raw corn starch and sodium oleate as flocculants and sodium silicate a dispersant was applied on. Limited work has been reported on the flocculation of non-synthetic chrome slimes. The results showed that a slime sample with a chrome (Cr 2 O 3 ) head grade of 22.92% was upgraded to a maximum concentrate grade of 42.55% at a sodium oleate dosage of 88 g/ton slurry , a sodium silicate dosage of 44 g/ton slurry , 39.61% at a starch dosage of 106 g/ton slurry and sodium silicate dosage of 62 g/ton slurry . The corresponding recoveries using sodium oleate as a flocculent were between 80–89% and 73–79% for starch. Sodium oleate showed a better performance than starch in terms of both grade and recovery. Decantation washing tests showed that the chrome (Cr 2 O 3 ) grade of the concentrate can be further increased to above 44%. These results are very encouraging as they indicate that selective floccula - tion can achieve satisfactory upgrade ratios and recovery when processing chrome ultrafine or slime material.","PeriodicalId":50416,"journal":{"name":"Gospodarka Surowcami Mineralnymi-Mineral Resources Management","volume":"84 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90345484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact on concrete properties using e-plastic waste fine aggregates and silica fume","authors":"Adil Farooq, M. Malik, Tauqeer Tariq, Mamoona Riaz, W. Haroon, Awais Malik, Mujeeb Ur Rehman","doi":"10.24425/gsm.2019.128516","DOIUrl":"https://doi.org/10.24425/gsm.2019.128516","url":null,"abstract":"","PeriodicalId":50416,"journal":{"name":"Gospodarka Surowcami Mineralnymi-Mineral Resources Management","volume":"87 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84569962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of dividend payments by listed oil and gas companies on their valuation","authors":"Agata Sierpińska-Sawicz, Maria Sierpińska","doi":"10.24425/gsm.2022.142788","DOIUrl":"https://doi.org/10.24425/gsm.2022.142788","url":null,"abstract":"the right proportions in the distribution of net profit into the retained part and the part transferred to the shareholders will translate into the company’s value. the first part of the paper contains theoretical considerations on macroeconomic, microeconomic and the capital market determinants influencing companies’ distribution of net profit. A large group of microeconomic factors – long-term trends in changes of net profit, shareholder structure, the company’s life cycle and its investment opportunities – as well as a selection of financing sources facilitating the attainment of the optimal capital structure are discussed. the most important macroeconomic factors include the economic situation, the level of inflation, sector specifics and the situation on the stock market. the authors present the results of empirical research in which they assume that the dividend yield of companies from the oil and gas sector influences the value of the company depending on the level of investments shaping the book value of shares, and that the dividend yield affects the duration of the return on capital expressed as the price to net profit ratio, and thus the level of company risk. the calculated Pearson linear correlation coefficients show an insignificant influence of the dividend yield on the value of companies from the oil and gas sector. this value is determined by a number of other factors. the study is based on statistical data for 2010–2020 derived from Warsaw Stock Exchange Yearbooks.","PeriodicalId":50416,"journal":{"name":"Gospodarka Surowcami Mineralnymi-Mineral Resources Management","volume":"32 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82323286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}