Effective Laboratory Method of Chromite Content Estimation in Reclaimed Sands

• Autorzy: Ignaszak Z. , Prunier J. B.

Identyfikatory

DOI

10.1515/afe-2016-0071

• Języki publikacji: EN

Abstrakty

EN

The paper presents an original method of measuring the actual chromite content in the circulating moulding sand of foundry. This type of material is applied for production of moulds. This is the case of foundry which most frequently perform heavy casting in which for the construction of chemical hardening mould is used, both the quartz sand and chromite sand. After the dry reclamation of used moulding sand, both types of sands are mixed in various ratios resulting that in reclaimed sand silos, the layers of varying content of chromite in mixture are observed. For chromite recuperation from the circulating moulding sand there are applied the appropriate installations equipped with separate elements generating locally strong magnetic field. The knowledge of the current ratio of chromite and quartz sand allows to optimize the settings of installation and control of the separation efficiency. The arduous and time-consuming method of determining the content of chromite using bromoform liquid requires operational powers and precautions during using this toxic liquid. It was developed and tested the new, uncomplicated gravimetric laboratory method using powerful permanent magnets (neodymium). The method is used in the production conditions of casting for current inspection of chromite quantity in used sand in reclamation plant.

Słowa kluczowe

EN

chromite sand; magnetic recuperation; neodymium magnets; furan sand dry; reclamation; ferrous alloys; heavy castings

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2016
• Tom: Vol. 16, iss. 3
• Strony: 162--166
• Opis fizyczny: Bibliogr. 17 poz., rys., wykr.

Twórcy

autor

Ignaszak Z.

• CAD/CAE Laboratory, Division of Foundry, Poznan University of Technology, Poznań, Poland

autor

Prunier J. B.

• Metallurgical Group CIF Ferry-Capitain, France

Bibliografia

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• [2] Ignaszak, Z., Millot, A., Prunier. J-B. (1997). Recuperation of chromite from circulating moulding sand. Technological and economical aspect, Pro. II Międzynarodowej Konferencji Nowoczesne Technologie Odlewnicze-Ochrona Środowiska, AGH (in Polish).
• [3] Ignaszak, Z., Prunier, J-B. & Piault. R. (1999). Exploitation experience of pneumatic transport system in French founderies conditions. Solidification of Metals and Alloys. 40 (in Polish).
• [4] Ignaszak, Z. (2000). Thermal reclamation of chemical binding moulding sands. Furan moulding sand example. Proceedings of III International Conference “Nowoczesne Technologie Odlewnicze-Ochrona Środowiska”. (in Polish).
• [5] Ignaszak, Z., Prunier, J-B. & Piault. R. (2002). Thermal reclamation and binder sands recycling using the pneumatic transport. Archives of Foundry. 5. 64-73, (in Polish).
• [6] Ignaszak, Z., Stark, U., Ziętkiewicz, S., Nieskurski. B. (2005). Identification of thermal reclamation binder moulding sand parameters in aluminum alloy foundry, Procedings of Conference „Transport Pneumatyczny 2005”, Ed. PAN Oddział Katowice 2005, 104–118. (in Polish)
• [7] Ignaszak, Z. (2004). Analyze of sand quality parameters in reclamation system plant. Operating report for Srem Foundry, Poznan, (in Polish).
• [8] Ignaszak, Z. & Prunier, J–B. (2006). The practice of furan moulding sands quality optimization made of reclaim sand in cast iron foundry. Przegląd Odlewnictwa. 7-8, 310-314 (in Polish).
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• [13] Ignaszak, Z. (2014). Pousierre dans la chromite recuperee (rapport final), Unpublished report, Ferry-Capitain, November.
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• [16] Gujar, A.R. and others. (1998). Ilmenite, Magnetite and Chromite Beach Placers from South Maharashtra, Central West Coast of India. Resource Geology, 60(1), 71-86.
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Uwagi

PL

Opracowane ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.