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Wyszukujesz frazę "Dańko, A." wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
Application of the Triboelectric Method for the Ongoing Assessment of the Quality of Reclaim in Mechanical Reclaimers
Autorzy:
Dańko, R.
Pietrzak, A.
Gruszka, D.
Powiązania:
https://bibliotekanauki.pl/articles/2161212.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
mechanical reclamation
reclamation process
regeneration
foundry engineering
fenol resin
moulding sand
regeneracja mechaniczna
proces rekultywacji
regeneracja
inżynieria odlewnicza
żywica fenolowa
Opis:
The method of the ongoing assessment of the reclaim quality originating from the mechanical reclamation is described in this paper. In the process, the triboelectric system of measuring amounts of dust in the dedusting part of a reclamation device was applied. Based on the online measurements of the amounts of dust generated in the spent sand-reclamation process and the post-process determinations of the ignition losses and granular structures of the removed dust, the proper work parameters of the experimental reclaimer were selected. The allowable value of the ignition losses as well as the main fraction of the reclaimed matrix being similar to fresh sand was assumed as the main criteria of the positive assessment of the process. Within the presented investigations, a periodically operating device for rotor-mechanical reclamation was developed. The possibility of changing the intensity and time of the reclamation treatment as well as the triboelectric system of the dust-amount measuring were applied in this device. Tests were performed for the spent moulding sand with phenol-resol resin Carbophen 5692 hardened by CO2. This sand represents the moulding sand group with a less harmful influence on the surroundings for which the recovery of the quartz matrix utilising the reclamation requires stricter control of the parameters of the reclamation process and reclaim quality.
Źródło:
Archives of Foundry Engineering; 2022, 22, 2; 63--70
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of Harmfulness of Phenolic Resins Hardened by CO2 in an Aspect of Emission of Substances from BTEX and PAH Groups
Autorzy:
Holtzer, M.
Żymankowska-Kumon, S.
Bobrowski, A.
Dańko, R.
Kmita, A.
Powiązania:
https://bibliotekanauki.pl/articles/380226.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
environment protection
phenolic resin
BTEX
PAH
foundry
ochrona środowiska
żywica fenolowa
odlewnia
Opis:
Out of moulding sands used in the foundry industry, sands with organic binders deserve a special attention. These binders are based on synthetic resins, which ensure obtaining the proper technological properties and sound castings, however, they negatively influence the environment. If in the initial state these resins are not very dangerous for people and for the environment, thus under an influence of high temperatures they generate very harmful products, being the result of their thermal decomposition. Depending on the kind of the applied resin under an influence of a temperature such compounds as: furfuryl alcohol, formaldehyde, phenol, BTEX group (benzene, toluene, ethylobenzene, xylenes), and also polycyclic aromatic hydrocarbons (PAHs) can be formed and released.
Źródło:
Archives of Foundry Engineering; 2013, 13, 1 spec.; 39-43
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Elution of mixed moulding sands with the GEOPOL binder and core sands with the phenolic resin
Autorzy:
Holtzer, M.
Żymankowska-Kumon, S.
Dańko, R.
Kmita, A.
Powiązania:
https://bibliotekanauki.pl/articles/380919.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
environment protection
phenolic resin
moulding sand
core sand
BTEX
PAHs
ochrona środowiska
żywica fenolowa
masa formierska
masa rdzeniowa
Opis:
Out of moulding and core sands used in the foundry industry, sands with organic binders deserve a special attention. These binders are based on synthetic resins, which ensure obtaining the proper technological properties and sound castings, however, they negatively influence the environment. Depending on the kind of the applied resin under an influence of a temperature such compounds as for example BTEX group and polycyclic aromatic hydrocarbons (PAHs) can be formed and released. During storing or economic utilization of used sand is possibility of eluting harmful substances into the environment. Therefore at assessing an influence of the used sand on the environment two above elements should be taken into consideration. Only such investigations provide the complete assessment of the given sand harmfulness.
Źródło:
Archives of Foundry Engineering; 2013, 13, 4; 53-56
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of a liquid metal temperature on a thermal decomposition of a phenolic resin
Autorzy:
Holtzer, M.
Bobrowski, A.
Dańko, R.
Żymankowska-Kumon, S.
Kolczyk, J.
Powiązania:
https://bibliotekanauki.pl/articles/382247.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
environment protection
phenolic resin
BTEX compounds
alluminium
foundry
ochrona środowiska
żywica fenolowa
związki typu BTEX
aluminium
odlewnictwo
Opis:
Due to the presence of harmful substances in resins those mould sands may be hazardous to the natural environment and workers. The general assessment of harmfulness of sands used for molds and cores encompasses 2 basic points: emission of hazardous substances during processes of preparing sands, pouring mold with liquid metals (high temperatures), cooling and shaking-out; possibility of washing out hazardous substances from used sands to the environment, during storage or economic use outside foundries. We present the results of research on the emission of BTEX compounds from mould sands with phenolic resins during pouring liquid metal of different temperature (cast iron and Al alloy). The research was conducted according to the original method prepared by the authors, which has been used for years in cooperation with various foundries (Poland, abroad).
Źródło:
Archives of Foundry Engineering; 2013, 13, 2; 35-38
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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