CODISPOSAL. Presented by Mike Gowan Principal. DEFINITION. In mining and mineral processing, materials are separated according to their particle size and mineralogy The wastes produced fall into Coarse-grained (waste/rejects); & Fine-grained (tailings)
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Co-disposal involves the combining of these waste streams
Codisposal - some of the tailings can be made to settle in the voids in the coarse waste.
Tailings filling between Windrows
Tailings Spigot Pipeline
deposited into pit pond
Waste rock end-dumped
Eventually Waste extended over Tailings to produce a Closure Cover
Mixing Rejects &
Placing and Spreading
Rejects only Beach
Well Mixed Codisposal &
Generally cannot drive easily over rejects, but can over upper codisposal beach
Stable Codisposal Wall