Conditions of Thermal Reclamation Process Realization on a Sample of Spent Moulding Sand from an Aluminum Alloy Foundry Plant

• Autorzy: Łucarz M. , Dereń M.

Identyfikatory

DOI

10.1515/afe-2017-0074

• Języki publikacji: EN

Abstrakty

EN

The results of investigations of thermal reclamation of spent moulding sands originating from an aluminum alloy foundry plant are presented in this paper. Spent sands were crushed by using two methods. Mechanical fragmentation of spent sand chunks was realized in the vibratory reclaimer REGMAS. The crushing process in the mechanical device was performed either with or without additional crushing-grinding elements. The reclaimed material obtained in this way was subjected to thermal reclamations at two different temperatures. It was found that a significant binder gathering on grain surfaces favors its spontaneous burning, even in the case when a temperature lower than required for the efficient thermal reclamation of furan binders is applied in the thermal reclaimer. The burning process, initiated by gas burners in the reclaimer chamber, generates favorable conditions for self-burning (at a determined amount of organic binders on grain surfaces). This process is spontaneously sustained and decreases the demand for gas. However, due to the significant amount of binder, this process is longer than in the case of reclaiming moulding sand prepared with fresh components.

Słowa kluczowe

EN

spent moulding sand; organic binders; thermal destruction; ignition loss; mechanical reclamation; thermal reclamation

PL

zużyte masy formierskie; spoiwa organiczne; zniszczenie termiczne; straty prażenia; regeneracja mechaniczna; regeneracja termiczna

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2017
• Tom: Vol. 17, iss. 2
• Strony: 197--201
• Opis fizyczny: Bibliogr. 9 poz., il., wykr.

Twórcy

autor

Łucarz M.

• AGH University of Science and Technology, Faculty of Foundry Engineering 30-059 Krakow, 23 Reymonta Str., Poland

autor

Dereń M.

• AGH University of Science and Technology, Faculty of Foundry Engineering 30-059 Krakow, 23 Reymonta Str., Poland

Bibliografia

• [1] Holtzer, M. (2015). Effect of regenerate additive on quality of castings and harm of new molding and core molding masses. Kraków: Wydawnictwo Naukowe AKAPT. (in Polish).
• [2] Łucarz, M. (2015). Thermal reclamation of the used moulding sands. Metalurgija. 54(1), 109-112.
• [3] Łucarz, M. (2015). Setting temperature for thermal reclamation of used moulding sands on the basis of thermal analysis. Metalurgija. 54(2), 319-322.
• [4] Dańko, J. et al. (2015). US. Patent No. 9,061,288 B2.
• [5] Dańko, J., Kamińska, J., Skrzyński, M. (2013). Reclamation of Spent Moulding Sands with Inorganic Binders in the Vibratory Reclaimer Regmas. Archives of Metallurgy and Materials. 58(3), 993-996.
• [6] Bobrowski, A., Dańko, R., Holtzer, M., Drożyński, D., Skrzyński, M. (2014. Investigations of the reclamation ability of moulding sands with the modified binding system and the reclaim quality assessment. Archives of Foundry Engineering. 14(1), 31-36.
• [7] Dańko, R. (2013). Criteria for an advanced assessment of quality of moulding sands with organic binders and reclamation process products. China Foundry. 10(3), 181-186.
• [8] Holtzer, M., Bobrowski, A., Dańko, R., Kmita, A., Żymankowska-Kumon, S., Górny, M. (2014). Emission of polycyclic aromatic hydrocarbons (PAHs) and benzene, toluene, ethylbenzene and xylene (BTEX) from the furan moulding sands with addition of the reclaim. Metalurgija. 53(4), 451-454.
• [9] Dańko, R. (2012). Strength model of self-setting moulding sands with synthetic resins in an aspect of the integrated matrix recycling process. Katowice-Gliwice: Archives of Foundry Engineering (in Polish).

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)