1. Breakthrough Mining Technology
ARD
BECOMES
Profitable ARD Metal Recovery
10 sec
ARD treatment generates profits!
September 2012
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2. DEMET converts waste into value Unrestricted Business Information
DEMET Benefits
DEMET converts waste into value
New Value Extraction
Profitably recovers valuable tramp metals from waste streams
Cost-effectively creates acid feedstock as a DEMET byproduct
Removes multiple common dominant ARD metals, wide utility
Waste Minimization
Reduces the load on conventional waste treatment systems
Reduces hazardous sludge creation during waste water treatment
Can lower ARD sulfate levels
25 sec
Waste into value – Extracts NEW sources of value from existing wastes.
Added bonus – Reduces wastes entering conventional processes.
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3. Profitable new metal recovery increases revenues
Implications
Profitable new metal recovery increases revenues
Byproducts & contaminant removal reduce existing process costs
New Revenue Generation
New incremental revenue generated offsets conventional treatment costs
DEMET byproducts feed into existing mining processes & defray costs
Cost Reductions
Less treatment chemicals are required
Lower conventional treatment costs result
Less sludge to dispose reduces conventional treatment costs
25 secs
Profitable metal recovery – NEW revenue sources created.
Added bonus – Lowers conventional treatment costs.
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4. DEMET can defray ~$5 million/yr at a typical ARD site Sludge
Value
Equity Silver Mine
(main zone pit))
DEMET can defray ~$5 million/yr at a typical ARD site
Financial Repercussions (for typical 1000 GPM ARD Flow)*
Metal Reclamation
Recovery Cost ($/lb)
Avg. Value
Avg. Profit (1.5 $/lb)
Recovered
Copper
Zinc
Product
2,000,000 $/yr Profit
Avg. Profit (0.5$/lb)
Sludge
Sludge Reduction
$1,700,000/yr Savings
58%
Reduced Chemical Use
$1,800,000/yr Savings
Precipitating Agent (ton/yr)
[Caustic] NO
DEMET
WITH
60%
Chemical Use Reduction
60 sec
Significant typical ARD cost offsets.
Cost offsets result from:
New Revenue from recovered metal sales.
Reduced sludge generation due to contaminant removal.
Less chemicals needed due to contaminant removal.
Bottom Line – captures new value from assets in wastes.
Assumed: Example: Equity Silver Mine , BC (treating 1000 GPM) -- ARD is pH 2.4 and contains 280 ppm Cu, 2,000 ppm Fe, 650 ppm Al, and 350 ppm Zn as major cation constituents at 80% recovery.
Sludge reduction ~8400 tons/year with disposal cost of $200/ton.
Chemical use (precipitation) savings of 8900 ton/yr at caustic cost of $200/ton of acid.
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5. Assumptions and Implications
Savings Calculation
Assumptions and Implications
10 Sec
Assumptions, calculations, and implications for examples noted.
See Included Excel spreadsheet (File): ARD Calculation.
See included Excel File: ARD Calculation
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6. ARD DEMET readily integrates into existing processes Application $$$
Residual metal value is captured
Lessens sludge creation and lowers treatment costs
$$$
Sludge
Conventional
Wastewater Treatment
ARD
Metals
Current Practice
DEMET Enhanced Treatment
Metal Product
DEMET™ Treatment $
Sludge
30 sec
Plugs right into existing processing trains
Is compatible with conventional treatment systems – augments their performance while capturing new value
Current practice: Loses valuable metals and creates lots of hazardous sludge
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7. Improves bottom line while mitigating environmental challenges
Key Impact Areas
Improves bottom line while mitigating environmental challenges
DEMET is green and “Green $$$”
ARD mitigation and treatment
Treatment of heap washdown effluent
Treatment of metal contaminated water in holding ponds
Metal recovery and re-acidification of heap leach raffinate
30 sec
Wide utility – particularly for widely used heap leach operations.
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8. DEMET meets key GARD Guide treatment targets
Meets GARD Guide Goals
DEMET meets key GARD Guide treatment targets
Global Acid Rock Drainage (GARD) Guide Future Treatment Goals
Cost-effective methods for sulfate removal
Development of in-pit water treatment methods
Methods to predict and evaluate the operating life of constructed wetlands and other passive treatment systems
Passive systems for manganese removal
Economic recovery of metals at relatively low concentrations from ARD
Design approaches for wetland treatment of ARD from metal mines (i.e., wide range of metal parameters)
15 sec
Addresses several key GARD guide goals applicable to nearly all ARD.
Namely, economic metal recovery from ARD and practical sulphate removal.
International Network for Acid Prevention (INAP), The Global Acid Rock Drainage Guide.
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9. Operation Integration
Modular DEMET provides flexible deployment
DEMET can improve a variety of water processing operations
Generic mine water system with potential DEMET enhanced drainage treatment facilities
D-T
DEMET Treatment
Plant Positions
20 sec
Flexible deployment allows DeMet use several typical mine water processing points.
DeMet can improve several key areas of your operations.
Adapted from:
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10. We profitably recover valuable products from waste streams
Operation
We profitably recover valuable products from waste streams
ARD
Electricity
Water + Na2SO4
INPUTS
Clean Water
Generate Acid/
Concentrate Product
DEMET Input
(weak stream)
Product Input
Metal
Removal
Precipitation Plant (polish)
45 sec
Simple operation is achieved with few and low-cost inputs.
Valuable components of ARD are economically separated, captured, and turned into saleable revenue generating products.
Conventional final polishing of DeMet treated stream is cheaper treating the full ARD.
DeMet captures new assets and value from ARD while lessening demands and costs for conventional final treatment.
Converts wastes into value!
Saleable Concentrate
Saleable Metal
OUTPUTS
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11. A flexible risk reducing staged approach ensures best ROI
Implementation
A flexible risk reducing staged approach ensures best ROI
Site Specific Site Specific
General
Bench Verification
Lab Pilot
Pilot Process Optimization
Pilot Field Validation
Portable Testing Pilot
Scoping Evaluation
Operation
Commissioning
Construction
System Layout (Full Scale)
Module Selection
(Intermediate Scale)
Scale Up
Full-Scale Project Initiation
Economic Validation (Intermediate Scale)
30 sec
A 3-stage risk mitigation implementation process is used.
Scoping evaluation: Is performed to assess site needs
Validation: System design optimization and unit module economic validation is performed
Commissioning: System layout, construction, and operation planned and executed
Adapted From: “Copper Leaching, Solvent Extraction, and Electrowinning Technology,” G. Jergensen II Ed.: Society for Mining, Metallurgy, and Exploration, Inc., Section I, p. 102 (1999).
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12. Project Timeline/Financials
Rapid project payback and fast implementation
Cost ($k)
Scoping Tests
Time (months) 3 6 9 12 15 18
Develop Spec
Validate Module
Design System
Construct
Shake
down
Operational 10
100
1,000
10,000
Full-Scale Project Initiation
Typical CAPEX $10M-$15M
Typical Net Savings $5M/yr
Typical Payback months
45 sec
DeMet’s modular design enables rapid implementation while the financial benefits reaped result in rapid project payback times.
Operations can begin within 15 months and achieve full payback in around 3 years.
CAPEX: Assumes a 1000 GPM system recovering ~1.4 M lbs/yr Copper and removing 80% of the Cu, Fe, and Zn present in the ARD.
Payback = ($10 M/$5M)* months to ($15M/$5M)* months
Assumed: Example: Equity Silver Mine , BC (treating 1000 GPM) -- ARD is pH 2.4 and contains 280 ppm Cu, 2,000 ppm Fe, 650 ppm AL, and 350 ppm Zn as major cation constituents at 80% recovery.
Sludge reduction ~8400 tons/year with disposal cost of $200/ton.
Chemical use (precipitation) savings of 6500 ton/yr at caustic cost of $200/ton of caustic.
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13. DEMET Deployment Options Unrestricted Business Information
Solution Options
The DEMET system & business flexibility provide various options to best meet specific site needs
The BPS solution provides long term ROI value while solving critical environmental challenges
DEMET Deployment Options
30 sec
Flexible system design and business model options allow optimization to site needs to maximize your ROI.
Systems can be moveable or fixed while Operation can range from direct purchasing to hassle free treatment under a service contract.
You choose what works best for your situation.
Equipment
Moveable skid mounted system
Fixed installation
Operation
Buy Equipment
Rent Equipment
Service Contracts
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14. Every day waiting is more value lost Unrestricted Business Information
Moving Forward
Every day waiting is more value lost
BPS is ready to help
Contact BPS about your ARD treatment/metal recovery challenges
Provide a sample of your waste stream and commission low-cost scoping tests to verify DEMET performance for your waste
Arrange a pilot-scale field test to verify project economic feasibility and consistent performance
Explore options with BPS for full-scale system module deployment to validate full system economics and operation
30 sec
Every day valuable assets are wasted as sludge.
BPS is ready to help you capture this lost value.
Would you like to know more?
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15. Unrestricted Business Information
Contact
For More Information
Dr. Patrick James
President
6083344828
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