| 摘要 |
<p>Reg. No. 013/729-80 113-0-78 PCT A process for separating one type of particle (e.g., ore particles) from a second type of particle (e.g., gangue particles) comprises the steps of (1) conditioning the particles with an agent comprising a compound having both a surface-selective functional group and a detectable moiety, to selectively coat one type of particle (i.e. either the ore particles or the gangue particles), to the substantial exclusion of the other; (2) detecting the coated particles; and (3) separating the detected coated particles from the substantially uncoated particles. In one embodiment, the detectable moiety is fluorescent and detecting is performed under ultraviolet radiation. The process is especially useful for separating higher grade limestone from lower grade limestone and/or gangue or for separating oil shale or coal of high BTU value from lower BTU materials or for concentrating valuable minerals, such as silver or copper ores.</p> |
