CANADIAN TECHNOLOGY
Modular 150 m 3 / h water treatment unit using ChemSulphide ® technology
ability to treat a wide range of feed water to comply with ultra-low limits for various constituents of concern, minimise solids residue generation and maintain a small plant footprint.
With three degrees of freedom in the process control, ChemSulphide has greater flexibility and robustness across a wide range of feed water quality. It is also a selective process that targets only the constituents of concern for removal while allowing other non-toxic and / or natural minerals to pass through the treatment process. This results in reduced chemical and power consumption and avoids excessive generation of waste residue.
Solids precipitated from the site mine water are blended with the mill concentrate or added to the paste backfill, leaving as little impact to the land as possible and minimising long-term liabilities.
Only in operation for a year, a Mongolian copper dump leach operation was experiencing high flow rates at twice the design capacity in the dump leach circuit. The site design assumed a negative water balance but an unseasonably wet summer season prompted the site owner to engage BioteQ to design a water treatment plant to treat and discharge excess water accumulating in the system.
BioteQ started by first looking at the overall site water management plan as often substantial savings and efficiencies can be gained with this n Installation of weather stations to determine local climatic conditions n Execution of a field evaporation pilot, using different styles of evaporation equipment n Design of a drilling campaign to monitor solution movement within the dump n Design of a booster pumping station and dump irrigation network to maximise evaporation and improve copper recovery rates by reducing the irrigation rate. Onsite analysis of these options was undertaken and results showed that excess solution in the plant water balance can be effectively managed by expanding the irrigation network and installing fogging evaporators at the top of the dump.
This approach saved the site owner the capital and ongoing operational costs associated with the installation of a water treatment plant on site. It also provided the site owner with a solution to address the excess water in a quicker timeframe. IM
4th
International Seminar on Tailings Management
JULY 12-14
hotel grand hyatt santiago, chile
EARLY BIRD REGISTRATION
UNTIL MAY 15 executive committee areas of interest
Classification, thickening and filtration • Conventional, paste and filtered tailings & others • Geotechnical and rheological characterization • Long-distance transport and energy recovery • Chemicals to improve tailings transport and deposition • Salt water impact on tailings • Seepage control and effluent treatment • Geotechnical control and stability in confronting earthquakes • Dust control and revegetation • Relocation and retreatment • Regulations for tailings deposits( dam break & evacuation manual) • Enhancing water recovery • Operational experiences tailings 2017 chair rené orellana Water and Tailings Corporate Manager Codelco, Chile
technical coordinator hugo quelopana Specialist Engineer Delfing, Chile co-organizer césar pastén Geotechnical Academic Universidad de Chile
directing member caius priscu Head of Mineral Residue Management Anglo American, Chile
REGISTER IN GECAMIN. COM / TAILINGS
organizers institutional partners
MINNOVEX
P r o v e e d o r e s d e C l a s e M u n d i a l
APRIL 2017 | International Mining 47