Research on Reclamation and Activation of Moulding Sands Containing Water-Glass Hardened with Microwaves

• Autorzy: Stachowicz M. , Granat K.

Identyfikatory

DOI

10.2478/afe-2014-0046

• Języki publikacji: EN

Abstrakty

EN

Presented are results of a research on usability of an innovative reclamation process of microwave-hardened moulding sands containing water-glass, combined with activation of binder. After each subsequent stage of reclamation, quality of the reclaimed material was determined on the grounds of measurements of permeability and results of screen analysis. The reclaimed material was next used again to prepare new moulding sand. The sandmix based on high-silica sand prepared with water-glass grade 145, was subject to the following cyclical treatment operations: mixing components, consolidation, microwave hardening, cooling, heating the mould up to 800°C, cooling to ambient temperature, mechanical reclamation dry and wet. It was found that the used-up and reclaimed sandmix containing water-glass is susceptible to the applied activation process of thermally reacted film of binder and, in addition, it maintains good quality and technological properties of high-silica base. Observations of surfaces of reclaimed high-silica grains with activated film of reacted inorganic binder were carried-out using a scanning microscope. Thanks to properly selected reclamation parameters, the high-silica base can be reused even five times, thus reducing demand for fresh aggregate and inorganic binder.

Słowa kluczowe

EN

foundry technique; reclamation moulding sands; water glass; microwaves

PL

techniki odlewnicze; regeneracja mas formierskich

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2014
• Tom: Vol. 14, iss. 2
• Strony: 105--110
• Opis fizyczny: Bibliogr. 12 poz., rys., wyk.

Twórcy

autor

Stachowicz M.

• Foundry and Automation Team, Wroclaw University of Technology, ul. Łukasiewicza 5, 50-371 Wrocław, Poland

autor

Granat K.

• Foundry and Automation Team, Wroclaw University of Technology, ul. Łukasiewicza 5, 50-371 Wrocław, Poland

Bibliografia

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• [12] Stachowicz, M. & Granat, K. (2014). Possibilities of reclamation of microwave-hardened molding sands with water glass. XX International Conference of Polish, Czech and Slovak Foundrymen. 24÷26.04.2014. Izbicko k/Opola.