ALTIN CEVHERİNİN TEK TANE DARBE KIRILMA FONKSİYONLARININ AĞIRLIK DÜŞÜRME TEKNİĞİ İLE İNCELENMESİ

Bergama bölgesinden (Türkiye) temin edilen altın cevheri için darbe kırılma fonksiyonları, ağırlık düşürme testlerindenelde edilen tek tane darbe kırılma dağılımları kullanılarak tahmin edilmiştir. Bu amaçla, JK Tech ağırlık düşürme testaletinin modifiye edilmiş manuel versiyonu kullanılmıştır. Özgül öğütme enerjisinin (Ecs) darbe kırılma dağılımlarıüzerine etkisi incelenmiştir. Özgül ufalama enerjisi ile darbe kırılma ürün inceliği (t10) parametresi arasındaki ilişkikurulmuştur. Literatürde verilen Ecs-t10 modeli kırılma testi sonuçlarına başarılı bir şekilde uyum sağlamıştır. Kırılmafonksiyonunun tahmin edilmesinde kullanılmak üzere, altın cevheri için Ecs-t10 darbe kırılma modeli önerilmiştir. Altıncevherinin tek tane kırılma fonksiyonlarının tahmin edilebilmesi için t-aile eğrisi yaklaşımı uygulanmıştır. Bu amaçla,t-aile eğrileri modellenmiş ve altın cevheri için ampirik kırılma fonksiyonlarının değişimi farklı enerji seviyelerindeufalama işleminin modellenebilmesi için tahmin edilmiştir.

AN INVESTIGATION ON SINGLE-PARTICLE IMPACT BREAKAGE FUNCTIONS OF A GOLD ORE BY DROP-WEIGHT TECHNIQUE

Impact breakage functions for a gold ore from Bergama region (Turkey) was estimated based on the single-particle impact breakage distributions of particles obtained from drop weight tests. For this purpose, a modified manual version of a JK Tech drop-weight test device was used. Effect of specific comminution energy (Ecs) on impact breakage distributions were investigated. Relationship between specific comminution energy and impact breakage product fineness (t10) parameter was established. Ecs-t10 model given in the literature was successfully fitted to the breakage test results. Ecs-t10 impact breakage model for the gold ore was proposed to be used in breakage function estimation. t-family curve approach was applied to estimate single particle breakage functions of the gold ore. For this purpose, t-family curves were modelled and variations of empirical breakage functions for the gold ore were estimated on different impact energy levels for comminution process modelling.

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