Combination of Conventional Ball Mill and Stirred Mill to Obtain Ultra-Fine Talc

Yıl 2023, Cilt: 38 Sayı: 3, 683 - 693, 18.10.2023

Ömer Güleç , Öner Yusuf Toraman , Metin Uçurum

https://doi.org/10.21605/cukurovaumfd.1377725

Öz

In this study, it was investigated that talc ore could ground to very fine sizes using a combination of conventional ball mill and vertical stirred mill. Firstly, the conventional ball mill parameters such as mill speed (% of critical speed), material filling ratio (Jb), ball filling ratio (fc), ball size distribution (10-20-30-40 mm, %), grinding aid ratio (% of powder) and grinding time (min.) were optimized using classic experimental design. As a result of the optimization, fine talc product was obtained with d90=93.52 µm particle size. In the second stage, the ball mill product was re-milled using a stirred mill. As a result of study, a final ultra-fine talc powder was obtained after 60 minutes grinding time with d50=1.85 µm particle size and 14058 cm2/g total surface area. It has been seen that the conventional ball mill+stirred mill combination effective a process to obtain talc powder that suitable for industrial use.

Anahtar Kelimeler

Talc, Conventional ball mill, Stirred ball mill, Ultra-fine product

Bilyeli Değirmen ve Karıştırmalı Değirmen Kombinasyonu ile Çok İnce Talk Üretimi

Öz

Bu çalışmada, konvansiyonel bilyeli değirmen ve dik karıştırmalı değirmen kombinasyonu kullanılarak talk cevherinin çok ince boyutlara öğütülebileceği araştırılmıştır. İlk olarak, değirmen hızı (kritik hızın %'si), malzeme doluluk oranı (Jb), bilye doluluk oranı (fc), bilye boyut dağılımı (10-20-30-40 mm, %), öğütme yardımcısı gibi geleneksel bilyeli değirmen parametreleri klasik deneysel tasarım kullanılarak optimize edilmiştir. Optimizasyon sonucunda d90=93.52 µm partikül boyutuna sahip ince talk ürünü elde edilmiştir. Çalışmanın ikinci aşamasında ise bilyeli değirmen ürünü dik karıştırmalı değirmen kullanılarak yeniden öğütülmüştür. Çalışma sonucunda, 60 dakika öğütme ile d50 değeri1.85 µm olan ve 14058 cm2/g toplam yüzey alanına sahip çok ince talk ürünü elde edilmiştir. Çalışmanın sonunda konvansiyonel bilyeli değirmen+karıştırmalı değirmen kombinasyonunun endüstriyel kullanıma uygun çok ince talk eldesi için etkili bir teknoloji olduğu ortaya konulmuştur.

Anahtar Kelimeler

Talk, Konvansiyonel bilyeli değirmen, Karıştırmalı değirmen, Çok ince ürün

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