Comparative Studies on the Grindability of Some Ore Minerals | ||||
| Journal of Petroleum and Mining Engineering | ||||
| Article 7, Volume 24, Issue 1, June 2022, Page 66-71 PDF (332.34 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpme.2022.127156.1120 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Abdelzaher Abouzeid1; Ahmed Seifelnassr  2; Ghorashi Abdalla3; Younis Mustafa4; ِAmr F. M. Ibrahim 5
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| 1Mining Engineering Department, Faculty of Engineering, Cairo university | ||||
| 2Mining Engineering Department, Faculty of Petroleum and Mining Engineering, Suez University-Egypt. | ||||
| 3Mining and Processing Engineering Department, Faculty of Engineering, Omdurman Islamic University, Omdurman , Sudan. | ||||
| 4Mining and Processing Engineering Department, Faculty of Engineering, Omdurman Isamic University, Omdurman, Sudan. | ||||
| 5Mining Engineering Department, Faculty of Petroleum and Mining Engineering, Suez University-Egypt | ||||
| Abstract | ||||
| Comminution tests are a vital element in the proper design of mineral processing plants. Several grindability tests have been developed over the years for different applications and each test has its strengths and weaknesses. Among test methodologies considered, is the universally accepted high-pressure grinding roller (HPGR) test procedures based on small-scale tests. The present work has been carried out to compare the grinding characteristics of different ore minerals. It was observed that all tested minerals, (quartz, chromite, marble, hematite, magnesite, dolomite) showed a general similar trend while being compressed. Moreover, because those minerals have wide differences in their mineralogical, physical, and mechanical properties they have different comminution behavior under compression. The consumed energy, as well as the reduction ratios, are affected by the mineral hardness. The percentage product at a certain cut-size was found to be proportional to the expended energy for each mineral. A convenient grindability index under compression has been suggested as the specific productivity, in ton/kWh. This index is quite sensitive to the material hardness. | ||||
| Keywords | ||||
| Mineral breakage under compression; Energy consumption in mineral comminution; Differential grindability of minerals. Grindability Index | ||||
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