Study on the Efficiency of the Crushing Processes Using the Model of Jaw Crusher

• Autorzy: Ciężkowski P. , Maciejewski J. , Bąk S. , Kuśmierczyk J.
• Języki publikacji: EN

Abstrakty

EN

This paper presents the results of influence of one-stage and two-stage crushing processes on crushing energy, loads and performance. Experimental studies were carried out on doubletoggle Blake-type crusher. The study was performed on sandstone “Mucharz”. Influence of number of crushing cycles on process parameters was analysed. One-stage crushing was carried out for outlet slot e_r = 11 mm and feed average size of 80÷100 mm. During two-stage crushing, fraction 80÷100mm was crushing firstly setting an outlet slot on e_r = 24 mm, then sieved a fine material from the feed which does not require further crushing, and particles from sieves 8; 16; 31;5 mm were directed to second step. Second stage was carried out on e_r = 11 mm. Performed tests showed that two-stage crushing is profitable.

Słowa kluczowe

EN

crushing energy; crushing forces; crushing performance

• Wydawca: Oficyna Wydawnicza Politechniki Warszawskiej
• Czasopismo: Machine Dynamics Research
• Rocznik: 2015
• Tom: Vol. 39, No. 2
• Strony: 123--132
• Opis fizyczny: Bibliogr. 11 poz., il., rys., wykr.

Twórcy

autor

Ciężkowski P.

• Warsaw University of Technology

autor

Maciejewski J.

• Warsaw University of Technology

autor

Bąk S.

• Warsaw University of Technology

autor

Kuśmierczyk J.

• Warsaw University of Technology

Bibliografia

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• 2. Ciężkowski, P. (2012). Experimental investigations of crushing forces generated by variable shape jaws (in Polish). Zeszyty Naukowe Instytutu Pojazdów, 2(88):21–34.
• 3. Ciężkowski, P. and Maciejewski, J. (2014). Badania i analiza maszynowego procesu rozdrabniania wapienia zwartego morawica. Przegląd Mechaniczny, (5):35–41.
• 4. Foszcz, D. and Gawęda, T. (2012). Analysis of efficiency of grinding in ball and rod mills dependably on contents of fine particles in feed (in Polish). Journal of Mining and Geoengineering, 36(4):17–30.
• 5. Foszcz, D. and Włodarczyk, W. (1999). Influence of crushing conditions of dolomites in jaw crushers on product particle size distribution (in Polish). Gospodarka Surowcami Mineralnymi, 15:317–325.
• 6. Fuerstenau, D.W. and Abouzeid, A-Z.M. (2007). Role of feed moisture in highpressure roll mill comminution. International Journal of Mineral Processing, 82(4):203–210.
• 7. Kobiałka, R. and Naziemiec, Z. (2006). Researches over crushing process conducting by various transverse profile jaws (in Polish). Górnictwo i Geoiżynieria, 30(3/1):125–136.
• 8. Kłuszancew, B.W. and Łogak, L. and Bogucki, A. J. (1971). Wlijanie konstrukcii drobiaszczich plit na efektiwnost raboty. Stroit i Dorożn. Masz., 8.
• 9. Rumpf, H. (1966). Struktur der zerkleinerungswissenschaft. Aufbereitungs-Technik, 8:421–435.
• 10. Tromans, Desmond (2008). Mineral comminution: energy efficiency considerations. Minerals engineering, 21(8):613–620.
• 11. Tęsiorowski, J. (1981). Teoretyczne podstawy określania krytycznej ilości cykli roboczych kruszarek szczękowych. Polit. Śl. Symp. Nauk. Podstawowe Problemy Procesów rozdrabniania, Gliwice.

Uwagi

PL

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