Ernest Henry Mine - Tailings Dredging

Tailings Dredging

Principal: Ernest Henry Mining (Xstrata Copper)

Location: Near Cloncurry, Queensland

Contract Value: $4,500,000

Completion Date: August 2013

Overview

Our 300mm CSD Nu Compact was commissioned by Ernest Henry Mining to remine tailings from the Tailings Storage Facility to recover magnetite. Nu Compact pumped the reclaimed tailings via a 1000 metre long HDPE pipeline directly into a process circuit in which the magnetite was concentrated.

Scope of Work

Supply and operate dredging equipment on a 24/7 basis. Dredge and pump a consistent feed density to the processing plant.

Innovations

The dredge is fitted with an RTK navigation system to ensure the mining plan is followed accurately. Flow and density meters are fitted to the slurry line to help ensure a steady tonnage is pumped into the magnetite circuit. In addition, slurry density was controlled via addition of dilution water into the suction pipe, automated via a PLC against the dredge’s density meter.