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Dry Grinding of Armutçuk Coal in a Pin-Type Vertical Stirred Mill and the Effect of Bead Size on Product Fineness

Year 2007, Volume: 46 Issue: 1, 33 - 40, 01.03.2007

Abstract

In this study, dry grinding of Armutçuk coal (d50 1 mm) were investigated in a laboratory scale pin-type vertical stirred mill. Grinding experiments were carried out with various diameter steel beads (6.5, 5.5, 4.5, 3.5 mm) at various grinding times (2.5, 5, 10, 20, 40, 60, 120, 240 s). Then, the results were plotted to see the effect of grinding time and bead size on the product fineness. The results showed that the products, median size (d50) became finer (19, 18, 16, 11 m) as the media sizes decreases (6.5, 5.5, 4.5, 3.5 mm) in 60 s grinding time. The efficiency of the stirred mill reduced dramatically after the 60 s grinding time and the fine particles were hardly ground after the 120 s grinding time.

DİKEY PİNLİ KARIŞTIRMALI DEĞİRMENDE ARMUTÇUK KÖMÜRÜNÜN KURU ÖĞÜTÜLMESİ VE BİLYA BOYUTUNUN ÜRÜN İNCELİĞİNE ETKİSİ

Year 2007, Volume: 46 Issue: 1, 33 - 40, 01.03.2007

Abstract

Bu çalışmada, ortalama tane boyutu 1 mm olan Armutçuk kömürünün laboratuar ölçekli dikey pinli bir karıştırmalı değirmende kuru olarak öğütülmesi araştırılmıştır. Öğütücü ortam olarak 4 farklı çapta (6.5, 5.5, 4.5, 3.5 mm) granüle çelik bilyalar kullanılmış ve değişik sürelerde (2.5, 5, 10, 20, 40, 60, 120, 240 saniye) öğütmeler yapılmıştır. Daha sonra bilya boyutunun ve öğütme süresinin ürün inceliği üzerine etkisi incelenmiştir. Çapları 6.5, 5.5, 4.5 ve 3.5 mm olan bilyalarla 60 saniye öğütme sonucunda elde edilen ürünlerin d50 boyutları sırasıyla 19, 18, 16 ve 11 m bulunmuştur. Öğütme süresi 60 saniyenin üzerine çıkarıldığı zaman öğütme verimi dramatik şekilde azalmış ve özellikle 120 saniyeden sonra tanelerin neredeyse hiç öğütülmediği görülmüştür.

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Details

Other ID JA53RU56GT
Journal Section Technical Notes
Authors

Hasan Hacıfazlıoğlu This is me

C. Cengiz Pilevneli This is me

İhsan Toroğlu This is me

Publication Date March 1, 2007
Submission Date March 1, 2007
Published in Issue Year 2007 Volume: 46 Issue: 1

Cite

APA Hacıfazlıoğlu, H., Pilevneli, C. C., & Toroğlu, İ. (2007). Dry Grinding of Armutçuk Coal in a Pin-Type Vertical Stirred Mill and the Effect of Bead Size on Product Fineness. Scientific Mining Journal, 46(1), 33-40.
AMA Hacıfazlıoğlu H, Pilevneli CC, Toroğlu İ. Dry Grinding of Armutçuk Coal in a Pin-Type Vertical Stirred Mill and the Effect of Bead Size on Product Fineness. Mining. March 2007;46(1):33-40.
Chicago Hacıfazlıoğlu, Hasan, C. Cengiz Pilevneli, and İhsan Toroğlu. “Dry Grinding of Armutçuk Coal in a Pin-Type Vertical Stirred Mill and the Effect of Bead Size on Product Fineness”. Scientific Mining Journal 46, no. 1 (March 2007): 33-40.
EndNote Hacıfazlıoğlu H, Pilevneli CC, Toroğlu İ (March 1, 2007) Dry Grinding of Armutçuk Coal in a Pin-Type Vertical Stirred Mill and the Effect of Bead Size on Product Fineness. Scientific Mining Journal 46 1 33–40.
IEEE H. Hacıfazlıoğlu, C. C. Pilevneli, and İ. Toroğlu, “Dry Grinding of Armutçuk Coal in a Pin-Type Vertical Stirred Mill and the Effect of Bead Size on Product Fineness”, Mining, vol. 46, no. 1, pp. 33–40, 2007.
ISNAD Hacıfazlıoğlu, Hasan et al. “Dry Grinding of Armutçuk Coal in a Pin-Type Vertical Stirred Mill and the Effect of Bead Size on Product Fineness”. Scientific Mining Journal 46/1 (March 2007), 33-40.
JAMA Hacıfazlıoğlu H, Pilevneli CC, Toroğlu İ. Dry Grinding of Armutçuk Coal in a Pin-Type Vertical Stirred Mill and the Effect of Bead Size on Product Fineness. Mining. 2007;46:33–40.
MLA Hacıfazlıoğlu, Hasan et al. “Dry Grinding of Armutçuk Coal in a Pin-Type Vertical Stirred Mill and the Effect of Bead Size on Product Fineness”. Scientific Mining Journal, vol. 46, no. 1, 2007, pp. 33-40.
Vancouver Hacıfazlıoğlu H, Pilevneli CC, Toroğlu İ. Dry Grinding of Armutçuk Coal in a Pin-Type Vertical Stirred Mill and the Effect of Bead Size on Product Fineness. Mining. 2007;46(1):33-40.

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