طحن الفوسفات روك
التكنولوجيا أساسا لعملية التعويم صخر الفوسفات. Over view Of The oil Shale in Egypt Oil Shale is a type of Shale which have a high amount of hydro carbon material . The main uses of oil Shale is production the thermal energy and in some cases to obtain some compound such as phenol groups which are not easy ...