| 摘要 |
A three-stage grizzly which separates rock having a diameter greater than approximately twelve (12) inches from the overburden, additional in-line screening equipment designed to separate rock having a diameter greater than 4'', mass blending and refined blending equipment, and conversion stations which allow further size reduction with crushing equipment as specified by customers. The grizzly and the screening equipment combine to precisely separate the overburden from the rock having a diameter in the range of approximately four (4) to twelve (12) inches, all of which is returned to the quarry as revenue material. The remainder of the overburden is mixed with waste fines at various stages in the process, and processed through classification and size reduction stations to produce a beneficial use material that has multiple uses in the market place.
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