Application of Full Factorial Design to Coal Cleaning by MGS

Yıl 2018, , 117 - 122, 30.09.2018

Semih Oluklulu , Sabiha Koca

https://doi.org/10.31796/ogummf.426696

Öz

In this study, physical cleaning of 
Cayirhan region’s low-quality, high ash and sulphur content lignites was
investigated. Cleaning of coal was done with MGS and the effects of drum speed,
shake frequency and shake amplitude parameters on ash and combustible recovery
of obtained clean coal was examined. Experiments carried out in this study was
performed with using full factorial design and results were evaluated using
statistical methods.

At optimum conditions %52,81 ash content was obtained with %61.65 combustible
recovery from about %75 ash contented feed.

With statistical analysis, mathematical models were obtained for both
ash and combustible recovery in a good agreement with experimental values. (R²
values of 0.79 and 0.98 for ash content and combustible recovery respectively) In
addition, for both ash content and combustible recovery, drum speed is the
parameter that contributes most to the separation efficiency of the device. However,
studied levels of shake amplitude was statistically in insignificant at the 95%
confidence interval.

Anahtar Kelimeler

Multi Gravity Separator, coal cleaning, factorial design

TAM FAKTÖRİYEL TASARIMIN MGS İLE KÖMÜR ZENGİNLEŞTİRMEYE UYGULANMASI

Öz

Çalışmada düşük ranklı, yüksek kül ve kükürt
içerikli Çayırhan Bölgesi linyitlerinin fiziksel yöntemlerle
zenginleştirilebilirliği araştırılmıştır. Zenginleştirmede kullanılan MGS’nin tambur
hızı, frekans ve genlik parametrelerinin elde edilen temiz kömürün külü ve yanabilir
verimi üzerindeki etkileri irdelenmiştir. Çalışmada gerçekleştirilen deneyler
tam faktöriyel deney tasarımı ile planlanmış ve deneylerin sonuçları
istatistiksel olarak değerlendirilmiştir.

Çalışmanın
sonucunda, yaklaşık %75 kül içerikli kömüründen, külde yaklaşık %30 oranında
azalma ile %52,81 küllü konsantre, %61,65 yanabilir verim ile elde edilmiştir.

Sonuçların
istatistiksel analizi ile kül için yaklaşık 0.79, yanabilir verim için 0.98 R²
değerleri ile güçlü modeller elde edilmiştir. Ayrıca hem kül, hem yanabilir
verim için tambur hızının, cihazın ayırma etkinliğine en çok katkı sağlayan
parametre olduğu görülmüştür. Ancak genliğin, çalışılan seviyelerde ve %95
güven aralığında etkisinin istatistiksel olarak anlamsız olduğu sonucuna
ulaşılmıştır.

Anahtar Kelimeler

Multi Gravite Seperatörü, kömür temizleme, faktöriyel dizayn

Kaynakça

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