Reclaiming Ability of Spent Sands with Modified, Hydrated Sodium Silicate

• Autorzy: Kamińska J. , Kmita A.

Identyfikatory

DOI

10.2478/afe-2014-0010

• Języki publikacji: EN

Abstrakty

EN

The presented in the paper investigations were aimed at the determination of the reclaimed material (obtained in the dry mechanical reclamation process) addition influence on properties of moulding sands with hydrated sodium silicate modified by colloidal suspension of zinc oxide nanoparticles in propanol. Nanoparticles originated from the thermal decomposition of alkaline zinc carbonate, were used. The results of the reclamation of the spent moulding sand with hydrated sodium silicate performed in the AT-2 testing reclaimer are presented in the paper. Both, spent sands from the Floster S technology and from the technology with the modified water-glass were subjected to the reclamation processes. The following determinations of the reclaimed material were performed: pH reaction, acid demand, ignition loss and Na2O content. The obtained reclaim was used as a matrix component of moulding sands with water-glass in the Floster S technology, in which it constituted 60% and 50% of the sand matrix. The strength properties of the prepared moulding sands were determined (bending strength R_g^u, tensile strength R_m^u) after samples storing times: 1h, 2h, 4h and 24 hours.

Słowa kluczowe

EN

moulding sands; hardening; Floster S process; modification of sodium silicate; reclamation

PL

masa formierska; utwardzanie; modyfikacja krzemianu sodowego; regeneracja

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2014
• Tom: Vol. 14, iss. 1
• Strony: 41--44
• Opis fizyczny: Bibliogr. 17 poz., fot., rys., wykr.

Twórcy

autor

Kamińska J.

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

autor

Kmita A.

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

Bibliografia

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