Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Zdzisław Adamczyk"'
Publikováno v:
Materials, Vol 17, Iss 18, p 4477 (2024)
Rare earth elements are an essential critical raw material in the development of modern technologies and are highly sensitive to both supply chain disruptions and market turbulence. The presented study examines the characteristics of fuel, fly ash, a
Externí odkaz:
https://doaj.org/article/b10b17578d304161931291bf8d7c2dba
Publikováno v:
Materials, Vol 17, Iss 17, p 4323 (2024)
The aim of the research was to assess the potential of bottom ash from Polish coal-fired power plants as an alternative source of rare earth elements (REY). The potential of these ashes was compared with fly ash from the same coal combustion cycle. T
Externí odkaz:
https://doaj.org/article/c717ef6f6fc54790bcae506d5d68018f
Publikováno v:
Case Studies in Construction Materials, Vol 18, Iss , Pp e02081- (2023)
Lime stabilization is one of the most commonly used methods for improving weak road subgrades, but it becomes very problematic in sulfate-bearing soils. This article presents results of a case study in which the sulfate attack was the most probable r
Externí odkaz:
https://doaj.org/article/af2c1111d8f44178920a7e94d56c3b90
Autor:
Katarzyna Nowińska, Zdzisław Adamczyk
Publikováno v:
Materials, Vol 16, Iss 23, p 7295 (2023)
This article presents the mineralogical and chemical characteristics of zinc and lead smelting slags, with particular reference to the slags formed during the simultaneous production of Zn and Pb by the Imperial Smelting Process. These slags, because
Externí odkaz:
https://doaj.org/article/21402728363d402eb27c9419951f8718
Publikováno v:
Energies, Vol 16, Iss 6, p 2696 (2023)
The growing demand for rare-earth elements and yttrium (REY) in modern technologies has resulted in the systematic depletion of primary ores. For this reason, research is being conducted around the world on alternative sources of rare-earth elements,
Externí odkaz:
https://doaj.org/article/3f89a5964fd042338b65ba8debe20d4e
Publikováno v:
International Journal of Recycling of Organic Waste in Agriculture, Vol 9, Iss 3, Pp 273-285 (2020)
PurposeThe increasing demand for phosphorous for the production of mineral fertilizers forces the continuous development of research and new technologies in the field of obtaining it from sources other than phosphate rocks. This paper presents an ana
Externí odkaz:
https://doaj.org/article/689266c613ab44099e41a20b0cbf2bd2
Autor:
Jacek Nowak, Magdalena Kokowska-Pawłowska, Joanna Komorek, Marian Wiatowski, Krzysztof Kapusta, Zdzisław Adamczyk
Publikováno v:
Energies, Vol 15, Iss 23, p 8824 (2022)
Coal gasification experiments were carried out in a reactor used to simulate underground coal gasification (UCG) processes under ex situ conditions at pressures of 10 and 40 bar. Changes in the optical properties of the organic matter were analyzed a
Externí odkaz:
https://doaj.org/article/af945f93399244a88758c5235c83bdf6
Publikováno v:
Minerals, Vol 11, Iss 9, p 1027 (2021)
The paper presents the characteristics of products annealing at the temperatures of 2400 and 3000 °C of unburned carbon from coal fly ash in terms of its possible use as a starting material in the graphitization process. An amorphous substance (orga
Externí odkaz:
https://doaj.org/article/c563c4f993504971adcd1825334076a0
Publikováno v:
Minerals, Vol 11, Iss 7, p 785 (2021)
The aim of this study was to examine the physico-chemical and phase characteristics of ash obtained in the process of the combustion of Polish poultry manure in a laboratory reactor with a bubbling fluidized bed. Three experiments, differing in the g
Externí odkaz:
https://doaj.org/article/07fd0cefa7ef4c64a0b4ceaa3bf19af7
Publikováno v:
Inżynieria Ekologiczna, Vol 18, Iss 2, Pp 39-45 (2017)
Abstract: The article presents issues related to mines liquidation. This process is the last stage of mining activities. As a result the reduce of negative environmental impact should be obtained. The aim of the study was to demonstrate the complexit
Externí odkaz:
https://doaj.org/article/fe07ba7f23664c269db8df567b8fcd5d