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    Wyświetlanie 1-8 z 8
    Tytuł:
    Investigations of the Reclamation Ability of Moulding Sands with the Modified Binding System and the Reclaim Quality Assessment
    Autorzy:
    Bobrowski, A.
    Dańko, R.
    Holtzer, M.
    Drożyński, D.
    Skrzyński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/380847.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    moulding sand
    geopolymer binder
    reclaim
    hardeners
    reclaim quality
    masa formierska
    spoiwo
    odzysk
    utwardzacze
    jakość odzysku
    Opis:
    The investigation results of the reclaiming ability of a spent moulding sand with the geopolymer Geopol developed by the SAND TEAM Company as well as a moulding sand with a modified binding system based on the geopolymer binder and new hardener offered by the KRATOS Company, are presented in the paper. The basic aim of investigations was the comparison of the reclaiming ability of spent moulding sands with additions of hardeners supplied by various producers. All hardeners were of the same hardening rate. Amounts of the geopolymer binder and of the hardener was the same for both tested moulding sands.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 1 spec.; 31-36
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Emission and trends in reclaiming waste heat in industrial instalations
    Autorzy:
    Hys, L.
    Wiak, T
    Powiązania:
    https://bibliotekanauki.pl/articles/952453.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    heat emission
    waste heat
    heat waste reclaim
    distributed generation
    Opis:
    The article presents the analysis of waste heat emission in a typical industrial installation. On the basis of the process monitoring system, periodic analyses of fumes composition, installation process manual and the conducted measurements of the heat fluxes from individual sources emitting heat on the way of natural convection from the devices’ coats and forced convection in the fumes flux were calculated. According to the authors the heat of temperature 140–155 °C and surface power density 860–970 W/m2 emitted by devices’ covers can be reclaimed in ORC techniques, Peltier’s modules and the systems realising Stirling cycle. Part of the waste heat included in fumes, which makes c.a. 76% of the total emission from the installation, should be returned to the process of fuel oxidation, what will reduce the emission by c.a. 18% and the volume of consumed fuel by c.a. 25 m3 CH4/h, according to the presented calculations.
    Źródło:
    Journal of Ecological Engineering; 2013, 14, 2; 26-30
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of Reclaim Addition on the Emission of PAHs and BTEX from Moulding Sands with Furfuryl Resin with the Average Amount of Furfuryl Alcohol
    Autorzy:
    Holtzer, M.
    Żymankowska-Kumon, S.
    Bobrowski, A.
    Dańko, R.
    Kmita, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/383161.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    environment protection
    foundry
    moulding sands
    BTEX
    PAHs
    reclaim
    ochrona środowiska
    odlewnia
    masa formierska
    odzysk
    Opis:
    In this paper, the results of decomposition of the moulding sand with furan-formaldehyde resin (with middle content of furfuryl alcohol about 50 %) also on a quartz matrix and with additions of a reclaimed material, under industrial conditions, are presented. Investigations of the gases emission in the test foundry plant were performed according to the original method developed in the Faculty of Foundry Engineering, AGH UST. The dependence of the emitted PAHs and BTEX group substances and ignition losses on the reclaim fraction in a moulding sand are of a linear character of a very high correlation coefficient R2. On the bases of the derived equations, it is possible to determine the amount of the emitted hazardous substances from the moulding sand containing the known fraction of the reclaim.
    Źródło:
    Archives of Foundry Engineering; 2014, 14, 1 spec.; 37-42
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of the Reclaim Addition into the Matrix on the Hardening Process Kinetics of the Moulding Sand with Furfuryl Resin
    Autorzy:
    Jamrozowicz, Ł.
    Kolczyk, J.
    Wojtuń, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/381643.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    moulding sand
    reclaim addition
    hardening process
    furfuryl resin
    masa formierska
    dodatki
    utwardzanie
    żywica furfurylowa
    Opis:
    Measurements of the hardening process course of the selected self-hardening moulding sands with the reclaimed material additions to the matrix, are presented in the hereby paper. Moulding sands were produced on the „Szczakowa” sand (of the Sibelco Company) as the matrix of the main fraction FG 0,40/0,32/0,20, while the reclaim was added to it in amounts of 20, 50 and 70%. Regeneration was performed with a horizontal mechanical regenerator capacity of 10 t/h. In addition, two moulding sands, one on the fresh sand matrix another on the reclaimed matrix, were prepared for comparison. Highly-fluid urea-furfuryl resin was used as a binder, while paratoluensulphonic acid as a hardener. During investigations the hardening process course was determined, it means the wave velocity change in time: cL = f(t). The hardening process kinetics was also assessed (dClx/dt = f(t)). Investigations were carried out on the research stand for ultrasound tests. In addition strength tests were performed.
    Źródło:
    Archives of Foundry Engineering; 2018, 18, 1; 41-46
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    New look at the process of reclamation of moulding sands
    Autorzy:
    Dobosz, S. M.
    Major-Gabryś, K.
    Hosadyna, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/380262.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    innowacyjne materiały odlewnicze
    innowacyjne technologie odlewnicze
    masa formierska
    innovative foundry materials
    innovative foundry technologies
    moulding sand
    reclaim
    ester hardener
    Opis:
    This paper presents a new perspective on the issue of reclamation of moulding and core sands. Taking as a premise that the reclamation process must remain on the surface of grains some not separated binding materials rests, it should be chosen the proper moulding sand's composition that will be least harmful for the reclaim quality. There are two different moulding and core sands taken into examinations. The researches prove that a small correction of their compositions (hardener type) improves the quality of the received reclaims. Carried out in this article studies have shown that such an approach to the problem of reclamation of the moulding and core sands is needed and reasonable.
    Źródło:
    Archives of Foundry Engineering; 2012, 12, 3; 19-24
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Can Sport the power to teach, educate and rehabilitate - an attempt to find mutual dependencies
    Autorzy:
    Bryła, Marcin
    Powiązania:
    https://bibliotekanauki.pl/articles/1070837.pdf
    Data publikacji:
    2019
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Sport can teach
    The history of activities on sports in prisons
    changes in the rules of the prison
    educate
    sport can reclaim
    Opis:
    At the beginning of XX century in Poland people prized physical culture. The aim was humans' growth - spiritual, physical and intellectual. Similar trends we can observed in England and The USA in the XIX century. Recognized the positive impact of sport on young people, consciously began to use it as resocialization remedy. In 1928 in Poland, physical education was introduced into prisons, reformatories and educational centres. Soon saw first results - mental abilities development and the spiritual arousal with them. In 1930 started global crisis. This resulted saving in sports resocialization programs in Poland. It's hard to evaluate this experimental resocialization program today. Prison menagement's reform after 1997 created new conditions. Prisoners should have possibilities to participate in sport classes. Sport has special meaning for unemployed and young people. There are activities conducive to biological, physical and mental development because they stimulate the nervous system. It gives well-being, joy and contentment. Sport shapes relationships because on the playing field people competing with themselves. Sport satisfies many humans' needs. It helps to overcome weakness, obstacles reach to success. Physical effort shapes self-discipline, persistence and positive character traits. Sport is proven way to reduce tensions' emotions, especially aggressive and supports resocialization process.
    Źródło:
    World Scientific News; 2019, 123; 1-13
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    „Odzyskać edukację” – pozaformalne działania edukacyjne na rzecz zmiany w oświacie. Perspektywa edukacji antydyskryminacyjnej
    “Reclaim Education”: Non-Formal Educational Practices for Educational Change – the Perspective of Anti-Discrimination Education
    Autorzy:
    Rudnicki, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/2183544.pdf
    Data publikacji:
    2018-12-31
    Wydawca:
    Wydawnictwo Naukowe Dolnośląskiej Szkoły Wyższej
    Tematy:
    pedagogika krytyczna
    edukacja antydyskryminacyjna
    odzyskiwanie edukacji
    krytyka szkoły
    edukacja społecznie zaangażowana
    critical pedagogy
    anti-discrimination education
    reclaim education
    school critique
    socially engaged education
    Opis:
    W tekście ukazałem wybrane wątki związane z odzyskiwaniem edukacji (reclaim education) oraz działaniami z zakresy edukacji pozaformalnej, które mogą wspierać nauczycieli i nauczycielki oraz uczennice i uczniów w ich działaniach na rzecz zmiany szkoły i jej programów szkolnych. Przedstawianą krytyką oświaty zakorzeniam w nurtach pedagogiki krytycznej. Edukacja antydyskryminacyjna – którą prezentuję jako narzędzie odzyskiwania edukacji i wiedzy – stanowi egzemplifikację możliwości zmiany edukacyjnej, jakie są obecne na skrajach systemu oświatowego. Przedstawianej krytyce szkoły towarzyszy również krytyka neoliberalnych i neokonserwatywnych porządków.
    The text discusses selected themes related to “reclaim education” and non-formal education practices that can support teachers and students in their efforts to change schools and school curricula. The critique of education outlined in the article is rooted in critical pedagogy. Anti-discrimination education, which I present as a tool for reclaiming education and knowledge, exemplifies the possibilities of educational change emerging on the margins of the educational system. The critique of school is accompanied by a critique of neoliberalism and neo-conservatism
    Źródło:
    Teraźniejszość – Człowiek – Edukacja; 2018, 21, Specjalny; 55-67
    1505-8808
    2450-3428
    Pojawia się w:
    Teraźniejszość – Człowiek – Edukacja
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Effect of Reclaim Primary Quality on Moulding Sand Parameters and Quality of Ductile Iron Casting Surface Layer
    Autorzy:
    Kamińska, Jadwiga
    Angrecki, M.
    Puzio, S.
    Stachowicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2134210.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    foundry industry
    furfuryl resin
    reclaim
    self-hardening moulding sand
    surface quality
    ductile iron
    przemysł odlewniczy
    żywica furfurylowa
    masa formierska
    masa samoutwardzalna
    jakość powierzchni
    odlew z żeliwa sferoidalnego
    Opis:
    The aim of the research was to determine the effect of the primary quality of reclaim from dry mechanical reclamation on the strength properties and service life of moulding sands based on this reclaim. Another aim was to establish the effect of the quality of reclaim, sulphur content - in particular, on the surface quality and thickness of the deformed surface layer in ductile iron castings. The research has revealed differences in the strength parameters and service life (mouldability) of sands based on the tested reclaims, depending on the type of the furfuryl resin used, including resins whose synthesis was done as part of the Żywfur project. Examinations of the structure of the surface layer of test castings poured in moulds made of loose self-hardening sands containing the addition of reclaim have confirmed the occurrence of degenerated spheroidal graphite in this part of the casting. It should be noted here that when massive castings with a long solidification time are made, the graphite degeneration effect can be more visible and the layer with the changed structure can increase in thickness. The research has clearly shown that it is necessary to control the parameters of the reclaim, including sulphur content which is transferred from the hardener and accumulates on the grains. This phenomenon has a negative impact not only on the sand strength and technological properties but also on the surface layer of castings.
    Źródło:
    Archives of Foundry Engineering; 2022, 22, 2; 83--88
    1897-3310
    2299-2944
    Pojawia się w:
    Archives of Foundry Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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