| 摘要 |
Disclosed is a method for recovering useful minerals from liberated clastic resources, such as sea sand and river sand. The method for recovering useful resources within the clastic resources according to the present invention comprises: a specific gravity sorting step for separating the clastic resources into at least two mineral groups of heavy minerals and light minerals, using the relative weight difference of the minerals included in the clastic resources; a magnetic force sorting step for separating the heavy minerals into a plurality of mineral groups using the selective attachment to a plurality of magnets, according to the difference of magnetism for the minerals within the heavy minerals, while continuously migrating the heavy minerals separated from the specific gravity sorting step to a channel having a plurality of magnets, each with different sizes of magnetic force; and an electrostatic sorting step for sorting target minerals again from at least one of the mineral groups from the plurality of mineral groups, by using the difference in electric property of the minerals included in each of the mineral groups separated in the magnetic force sorting step. |
