Magnetite crystals used in the coal separation process were lost to the refuse. It is ... A proton processing magnetometer with a sensitivity of gamma was used for this study. It consists of a sensor mounted on top of an 8 foot aluminum staff.
Hydrometallurgical extraction technologies provide a process route for resource recovery of valuable metals from both primary as well as secondary resources. In this study, the possibility of treating coal fly ash (CFA), a residue formed as a result of coal combustion in coalfired power plants, was investigated.