www.electrokineticsolutions.com Introduction EKS Technology - PowerPoint PPT Presentation

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Introduction EKS Technology  Process developed for in situ FFT densification  Uses unique electrical field management [EKS IP]  orders of magnitude lower electrical energy than previous electrophoresis methods  Application for Fines-Dominated Deposits www.electrokineticsolutions.com

Technology Status Current status  Bench to 1 m 3 lab scale and 2-D 5-metre tests completed  150m 3 scale tests planned for summer 2014  Tests show reduced unit energy requirement as scale and electrode spacing is increased www.electrokineticsolutions.com

Test Parameters  Confirmed 1,000L treatment feasibility  1000L Volume  Vessel size: 1m x 0.75m x 1m  Starting solids content 41.6% solids/wt Shell MFT  Voltage gradient: 1 to 2v/cm  Duration: 14 days Assessed  Release water quality and volume  Horizontal voltage gradient  Post-treatment shear strength and moisture analysis  Qualitative mapping of electrical field around electrodes www.electrokineticsolutions.com

 14 Days Treatment  330 L Water Separated  56.9% Solids  Up to 200 kPa Shear Strength  109 kWh Used  $8.72/m 3 treated  $15.53/Dry tonne  330kW/m 3 Water Recovered www.electrokineticsolutions.com

  7 Weeks Treatment 190 kWh Used   260 L Water Separated ~30% Volume Reduction  Greater electrode spacing may be  49.4% Solids possible  Up to 135 kPa Shear Strength www.electrokineticsolutions.com

5m Vertical Electrode Spacing Test % Solids Distribution www.electrokineticsolutions.com

 39 kWh Used  10 Days Treatment  ~50% Volume Reduction  ~490L Water Separated  Greater electrode spacing may  ~40% Solids be possible www.electrokineticsolutions.com

Water Chemistry  Water suitable for process water recycling  May need minor conditioning to meet site specific requirements www.electrokineticsolutions.com

Predictive Model  Predictive model developed based on process fundamentals and refined with actual test results  Provides practical support for selection of optimal configuration parameters  Treatment duration  Electric field strength  Electrode material and spacing  Provides a basis to determine the cost/benefits of reclaiming tailings against operational metrics such as: space, material handling, volume reduction, etc… www.electrokineticsolutions.com

 Could be an in-pit deposit such as lake bottom  Could be an above grade pond  Vertical electrode arrangement with target densities dependent on final reclamation plans Water Cap MFT End Pit Lake EKR Electrodes Process Extracted Water Extract water and compact tailing in-place Post Compacted Tailings increasing capacity of the deposit. Treatment www.electrokineticsolutions.com

In-place dewatering with fines separation/compaction to improve fines capture in settling basins and disposal areas  Makes use of existing facilities for in situ treatment of tailings  Works on a range of solids contents  Extracted water is suitable for return for process use  Horizontal or Vertical Electrode arrangement www.electrokineticsolutions.com

Potential Applications Densification of TT Deposits 30 Issue : Upper part of deposit will not consolidate or support sand capping. Year 10 Year 15 Deposit Height (m) Deposit Completed Capping Completed Alternatives: 20 Year 22 1. Sand raining – Challenging distribution Year 30 Prone to failures, textiles may be Year 85 needed Year 5 10 2. Desiccation of surface Shallow layer - then shuts down Ditching needed to deepen Year 1 3. Slow, hazardous access 0 40 50 60 70 80 90 4. Frozen surface access Total Solids Content(%) Mechanical spreading Source: Tailings & Mine Waste November 3 rd -6 th , 2013 Slow, hazardous, expensive Solution : Densify upper  5 m using EKS technology sufficient to carry hydraulically placed sand cap and surface soil. www.electrokineticsolutions.com

 2014 Vertical large scale testing at C-FER facility in 1.7m Edmonton  5m 150m 3 3D test 10m  Validate vertical electrode configuration/spacing  Confirm reduced energy at larger scale  Refine predictive model  2014 Horizontal large scale testing at C-FER facility in Edmonton  Demonstrate horizontal electrode configuration 40m 3 3D test   Refine predictive model 6m  2015 Field Demonstration 2.5m  Scale dependent on technical requirements and facility availability 2.5m  2016 Commercial Implementation www.electrokineticsolutions.com

Funding  Proposal in front of AI-EES  Shell committed for 2014 scale up work program  SDTC funding has been obtained for 2014 & 2015  Initiating dialogue with additional partners www.electrokineticsolutions.com

Contacts  Paul Mankowski: pmankowski@shaw.ca  Phone: (403) 669-8216  Jim Micak: Jim.Micak@Electrokineticsolutions.com  Phone: (416) 203-7222, ext. 225  Go to http://www.electrokineticsolutions.com for more videos and more contact information. www.electrokineticsolutions.com