| 摘要 |
An apparatus for and a method of removing fibrous material from a mineral ore. In the described embodiment, the ore is first crushed in a suitable crushing apparatus to the proper feed size for a first grinding mill, normally a rod mill. The first grinding mill is so adjusted or designed as to grind the ore fed thereto to the coarsest grind at which most of the fibrous material is liberated from the rest of the ore. The fibrous material is a relatively coarse size when liberated at this grinding level. The ground material discharged from the first grinding mill is then fed as a slurry to a screening device having openings which are so sized as to retain on the screen as "oversize" the liberated fibrous material, but which pass the defibered slurry through the screen as "undersize." The defibered slurry is then passed to an additional grinding stage or stages in which the valuable or desired mineral is liberated to a desired degree from the defibered gangue material.
|
