EFFECT OF MILL FEED SIZE DISTRIBUTION AND GRINDING MEDIA SIZE ON SIZE REDUCTION PERFORMANCE OF AN INDUSTRIAL SCALE VIBRATING BALL MILL (VBM) IN CEMENT CLINKER GRINDING
Öz
In this study, open circuit single and two stage industrial scale vibrating ball mill (VBM) grinding
performance of raw (uncrushed) cement clinker was investigated using different mill feed size
distributions and grinding ball size configurations. The mill was modelled for the test cases using
perfect mixing mathematical modelling approach. Different ball size configurations were applied
in the grinding tests to estimate the effect of ball size configuration on grinding performance.
Proposed coarse ball size configuration (30-20-15mm) was determined to increase the size
reduction performance of single stage VBM grinding when coarse mill feed material was fed
to the VBM (F50=185μm) as compared to the finer mill feed case (F50=24μm). VBM grinding
performance was determined to increase with finer mill feed material (F50=24μm) and application
of finer ball size configuration (10-8-6mm) in single stage grinding case as compared to the two
stage grinding case.
Anahtar Kelimeler
Grinding Vibrating ball mill Mathematical modelling Cement clinker
Teşekkür
Authors would like to gratefully acknowledge the Cement Grinding Plant staff for providing access to the plant and their valuable support during the grinding tests.
Kaynakça
- Benzer, A. H., 2000. Mathematical Modelling of Clinker Grinding Process. PhD Thesis. Hacettepe University, Mining Engineering Department, Turkey (In Turkish).
- Broadbent, S. R., Callcott, T. G., 1956. A Matrix of Processes Involving Particle Assemblies, Phil. Trans. Roy. Soc. London Ser. A, 249, 99–123.
- Genç, Ö., 2008. An Investigation on the Effect of Design and Operational Parameters on Grinding Performance of Multi-Compartment Ball Mills Used in the Cement Industry. PhD Thesis. Hacettepe University, Mining Engineering Department, Turkey (In English).
- Hashim, S., 2003. Mathematical Modelling the Two-Compartment Mill and Classification. PhD Thesis. Julius Kruttschnitt Mineral Research Centre, The University of Queensland, Australia. Napier Munn, T. J., Morrell, S., Morrison, R. D.,
- Kojovic, T., 2005. Mineral Comminution Circuits Their Operation and Optimization. JKMRC Monograph Series in Mining and Mineral Processing, No.2, The University of Queensland, Brisbane, Australia.
- U.S. Geological Survey, 2019. Mineral Commodity Summaries February, 2019.
- Vibrating Ball Mills, Metso Minerals Catalogue, http://www.metso.com, (accessed 10 May 2010). Whiten, W. J., 1972. Simulation and Model Building For Mineral Processing. PhD Thesis. The University of Queensland, Australia.
- Zhang, Y. M., 1992. Simulation of Comminution and Classification in Cement Manufacture. PhD Thesis. South University B.E. (Central-South University of Technology), China.
ÇİMENTO KLİNKERİNIN ÖĞÜTÜLMESİNDE DEĞİRMEN BESLEMESİ BOYUT DAĞILIMININ VE ÖĞÜTÜCÜ ORTAM BOYUTUNUN ENDÜSTRİYEL ÖLÇEKLİ TİTREŞİMLİ BİLYALI DEĞİRMENİN (VBM) BOYUT KÜÇÜLTME PERFORMANSINA ETKİSİ
Öz
Bu çalışmada, -fırın çıkışı (kırılmamış) çimento klinkerinin açık devre tek aşamalı ve iki aşamalı
endüstriyel ölçekli titreşimli bilyalı değirmen (VBM) öğütme performansı farklı besleme dağılımları
ve öğütücü bilya boyu konfigürasyonları kullanılarak incelenmiştir. Değirmen, test koşulları için
mükemmel karışım matematiksel modelleme yaklaşımı kullanılarak modellenmiştir. Öğütme
testlerinde, bilya boyu konfigürasyonunun öğütme performansı üzerine etkisini tahmin edebilmek
için farklı bilya boyu konfigürasyonları uygulanmıştır. Önerilen iri bilya boyu konfigürasyonunun
(30-20-15mm) tek aşamalı VBM boyut küçültme performansını, birikimli %50 geçen boyu
185μm olan değirmen beslemesinin beslenmesi koşulunda birikimli %50 geçen boyu 24μm
olan değirmen beslemesi koşuluna göre artırdığı belirlenmiştir. VBM öğütme performansının,
daha ince değirmen beslemesi (F50=24μm) ve daha ince bilya boyu konfigürasyonu (10-8-
6mm) uygulamasıyla iki aşamalı öğütme koşuluna göre tek aşamalı öğütme koşulunda arttığı
belirlenmiştir.
Anahtar Kelimeler
Öğütme Titreşimli bilyalı değirmen Matematiksel modelleme Çimento klinkeri
Kaynakça
- Benzer, A. H., 2000. Mathematical Modelling of Clinker Grinding Process. PhD Thesis. Hacettepe University, Mining Engineering Department, Turkey (In Turkish).
- Broadbent, S. R., Callcott, T. G., 1956. A Matrix of Processes Involving Particle Assemblies, Phil. Trans. Roy. Soc. London Ser. A, 249, 99–123.
- Genç, Ö., 2008. An Investigation on the Effect of Design and Operational Parameters on Grinding Performance of Multi-Compartment Ball Mills Used in the Cement Industry. PhD Thesis. Hacettepe University, Mining Engineering Department, Turkey (In English).
- Hashim, S., 2003. Mathematical Modelling the Two-Compartment Mill and Classification. PhD Thesis. Julius Kruttschnitt Mineral Research Centre, The University of Queensland, Australia. Napier Munn, T. J., Morrell, S., Morrison, R. D.,
- Kojovic, T., 2005. Mineral Comminution Circuits Their Operation and Optimization. JKMRC Monograph Series in Mining and Mineral Processing, No.2, The University of Queensland, Brisbane, Australia.
- U.S. Geological Survey, 2019. Mineral Commodity Summaries February, 2019.
- Vibrating Ball Mills, Metso Minerals Catalogue, http://www.metso.com, (accessed 10 May 2010). Whiten, W. J., 1972. Simulation and Model Building For Mineral Processing. PhD Thesis. The University of Queensland, Australia.
- Zhang, Y. M., 1992. Simulation of Comminution and Classification in Cement Manufacture. PhD Thesis. South University B.E. (Central-South University of Technology), China.
Ayrıntılar
| Birincil Dil | İngilizce |
|---|---|
| Bölüm | Araştırma Makalesi |
| Yazarlar | |
| Yayımlanma Tarihi | 1 Aralık 2019 |
| Gönderilme Tarihi | 10 Mayıs 2019 |
| Yayımlandığı Sayı | Yıl 2019 Cilt: 58 Sayı: 4 |
