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Uwagi o usuwaniu ze ścieków piasku

100%

Sawicki J. M. , Kukliński M. , Nowakowski Ł.

2006

tom Nr 9

10-13

Defining sand traps" efficiency. Applied methods of sand removai. Possibility of applying a rinsing separator.

Influence of the Thermal Reclamation of the Spent Core Sand Matrix on Its Reuse

63%

Łucarz M.

Archives of Foundry Engineering

2014

tom Vol. 14, iss. 1 spec.

27--30

The investigation results of the thermal reclamation of spent core sands made in the hot-box technology are presented in the paper. Energy-consumption of the process was tested by recording the media consumption during the thermal treatment of the determined intensity. Gas demands in dependence of the reclamation process temperatures were compared. During the reclamation process the reclaimed material samples were taken to test ignition losses in order to determine the efficiency of the realised procedures. The influence of the reclamation temperature on the quality of the obtained reclaimed material was checked. The effects of the realised reclamation procedures of the same moulding sand at various temperatures were also assessed on the grounds of strength of moulding sands prepared on the bases of the obtained reclaims. It was found that the process energy-consumption can depend on the expected core sand parameters. The attention was drawn to the fact, that bearing of costs for the thermal reclamation - very often - does not correspond directly with the obtained effects. The thermal reclamation performed very intensively, which corresponds with the costs increase, is not always needed for obtaining the core sand of parameters comparable with the sand made of fresh components.

Influence of Thermal Reclamation Temperature on the Strength of the Moulding Sand Made of the Reclaim in the Hot-box Technology

63%

Łucarz M. , Grabowska B.

tom Vol. 15, iss. 1 spec.

131--135

The results of the thermal reclamation investigations of the spent moulding sand with the Ekotec 35 binder, are presented in the paper. The reclamation process of the quartz matrix was carried out on the basis of the author's own method of selecting the reclamation temperature. On the bases of the performed thermo-gravimetric analysis of the binder the temperature range required for the efficient thermal reclamation was indicated. In order to confirm the assumption the thermal reclamations were performed at a temperature determined by the TG and - for comparisons - at a lower and higher temperature. During the reclamation process samples of the reclaim were taken for testing ignition losses in order to determine the process efficiency. The correctness of the assumed method of selecting the temperature range of the thermal reclamation of spent moulding sand with the Ekotec 35 binder was confirmed.