SIKIŞTIRILMIŞ YATAK TESTİNDE TANE BOYUNA BAĞIMLI KIRILMA MODELİNİN UYGULANABİLİRLİĞİ
Manyetit, platin ve fosforit cevherlerinin basınç altında kırılma karakteristiği sıkıştırılmış yatak testi ile incelenmiştir. Bu amaçla, piston pres test aleti kullanılmıştır. Testler sonucunda elde edilen veriler kullanılarak enerji ve tane boyunun kırılma üzerine etkisi incelenmiştir. Literatürde yaygın olarak kullanılan ürün inceliğini ifade eden t10 değeri ile ECS (Özgül Ufalama Enerjisi) arasında ilişki kurulmuştur. Sonrasında ürün inceliği ile tane boyutu ilişkisi incelenmiş ve test sonucunda elde edilen verilerin tane boyuna bağımlı kırılma modeline uyumu değerlendirilmiştir. Çalışma sonunda, tane boyuna bağımlı kırılma modelinin tane boyundan bağımsız kırılma modeline göre verilere daha iyi uyum sağladığı ve malzemelerin basınç altında kırılma davranımının belirlenmesinde de kullanılabileceği sonucuna varılmıştır.
THE APPLICABILITY OF SIZE-DEPENDENT BREAKAGE MODEL IN COMPRESSED BED BREAKAGE
Breakage characteristics of magnetite, platinum and phosphorite ores were investigated via compressed bed breakage tests. With this aim, piston-die test equipment was used. Effects of specific comminution energy (ECS) and particle size on breakage was investigated by using obtained data from the breakage tests. The relationship between ECS (Specific Comminution Energy) and t10 value, which is commonly used in literature, was established. Then, the product fineness and particle size relationship were analysed, and the compatibility of the data obtained from the tests, with size dependent breakage model was evaluated. It was concluded that the size-dependent breakage model better fitted to the data than the size-independent model and this model could be used to determine the breakage behaviour under compression force.
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