The Effect of Impact Breakage on the Separation Efficiency
In the scope of this investigation comparison between impact breakage and compression breakage were carried out for the separation efficiency of minerals using a chromite ore sample. The ore sample was broken below 1 nun employing a laboratory type roll crasher and an impact crusher.Concentration tests were conducted on -1+0.5 mm, -0.5+0.2 mm and -0.2 mm size fractions using a Wilfley type shaking table. Test results showed a remarkable difference between two types of breakage. Both concentrate grade and recovery was in the favour of impact crushing. Furthermore,the shape of the broken particles also showed differences such that in the case of impact breakage they were more spherical compared to compressive crushing. The results of the shaking table concentration tests showed that a concentrate assaying 48.4% Cr2O3 were obtained with 78.5% recovery in the case of impact breakage. On the other hand the concentrate grade and recovery values were 48.8% Cr2O3 and 52.4% respectively in the case of compression crushing. The losses in the tailings were also in favour of impact breakage proving that differential breakage occurred between chromite and gangue minerals.
Impact breakage Selective breakage Chromite ore Gravity concentration
A. A. Sirkeci A. G(u)l G. Bulut M. Ozer
Dept. of Mineral Processing Engineering, Faculty of Mines, Istanbul Technical University, lstanbul, Turkiye
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
735-739
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）