Transcript Slide 1

Breakthrough
Breakthrough
Mining
Mining Technology
Technology
ARD
BECOMES
Profitable ARD Metal Recovery
September 2012
© 2012 Blue Planet Strategies
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
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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
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Value
Equity Silver Mine
DEMET can defray ~$5 million/yr
at a typical ARD site
(main zone pit))
Financial Repercussions (for typical 1000 GPM ARD Flow)*
Avg. Value
Avg.
Profit
(0.5$/lb)
58%
Sludge
Reduction
Sludge
60%
Chemical Use
Reduction
[Caustic]
Sludge
Avg.
Profit
(1.5 $/lb)
Precipitating Agent (ton/yr)
Avg. Value
Recovery Cost ($/lb)
$1,800,000/yr Savings
$1,700,000/yr Savings
2,000,000 $/yr Profit
Recovered
Copper
Reduced Chemical Use
Sludge Reduction
Metal Reclamation
NO
DEMET
Zinc
Product
WITH
DEMET
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 $200/ton of acid.
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Savings Calculation
Assumptions and Implications
DEMET ARD Treatment Calculations
Calculations
Assumptions
Adjustable Quantitities = XXX
DEMET Augmented New Production
DEMET Wastewater Treatment
Auto Calculated Quantities = XXX
Financials
Operation Parameters
1,000
2.00
0.28
0.35
0.65
ARD Flow [D E M ET Input] (GPM)
ARD Iron Tenor [D E M ET Input] (g/L)
ARD Copper Tenor [D E M ET Input] (g/L)
ARD Zinc Tenor [D E M ET Input] (g/L)
ARD aluminum Tenor [D E M ET Input] (g/L)
Metal (Cu, Fe, Zn) Recovery (%)
80%
2.4
ARD pH
SX/EW Input Tenor [from DEMET Product] (g/L)
SX/EW output Tenor (g/L)
0.4
0.2
Costs
100%
Annual Operation Duty (%)
D E M ET Copper RecoveryTotal Cost ($/lb)
D E M E T Zinc Sulfate RecoveryTotal Cost ($/lb)
Average Copper Price ($/lb)
Average Zinc Sulfate Product Price ($/lb)
$
$
$
$
1.75
2.50
3.25
3.00
Sludge Disposal Cost ($/ton) $
Caustic (Neutralizer, precipitation) Cost ($/ton) $
200
200
Base (1000 GPM) Module Installed Cost -- Range Bottom ($) $
Base (1000 GPM) Module Installed Cost -- Range Top ($) $
CAPEX Scaling Rate Factor (unitless) $
File: ARD Brochure V1 1 Calculation
10,000,000
15,000,000
0.60
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. (Sludge taken to comprise mainly a mixture of: Fe(OH)3,
Cu(OH)2, Zn(OH)2, and Al(OH)3
Chemical use (precipitation) savings of 8900 ton/yr at caustic cost of $200/ton of acid.
Conversion Factors
Liters per US gallon (L/gal)
Minutes per year (min/yr)
grams per pound (g/lb)
3.7854
525,600
453.59
See included Excel File: ARD Calculation
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Installation D E M ET CAPEX at Target Scale-bottom ($) $
Installation D E M ET CAPEX at Target Scale-Top ($) $
Metals Removal/Recovery
Annual Copper Production (lb/yr)
Annual Copper Gross Value ($/yr)
Annual Copper Gross Margin ($/yr)
10,000,000
15,000,000
1,000,000
3,000,000
1,500,000
1,200,000
4,000,000
600,000
Annual Zinc Production [as sulfate salt] (lb/yr)
Annual Zinc Production [as sulfate salt]Gross Value ($/yr)
Annual Zinc Production [as sulfate salt] Gross Margin ($/yr)
Annual Iron Production [as sulfate salt] (lb/yr)
Total Annuial Recovered Metal Revenues ($/yr)
Sludge Production
Annual Sludge Avoided (tons/yr)
Untreated Annual Sludge Production (tons/yr)
Sludge Reduction (%)
Annual Sludge Disposal Cost Savings
Precipitation Chemical Usage (Caustic)
Caustic Use Avoided (tons/yr)
Annual Chemical (Caustic) Cost Savings
TOTAL Annual Cost Defrayed ($/yr)
7,000,000
2,100,000
8,400
14,600
58%
1,700,000
8,900
1,800,000
5,600,000
Total Copper Incremental Production Cost ($/lb) $
Produced Copper Incremental Gross Margin ($/lb) $
Incremental Produced Copper Incremental Margin (%)
1.75
1.50
46%
$
$
2.50
0.50
17%
3.25
100%
Total Zinc Sulfate Incremental Production Cost ($/lb)
Produced Zinc Sulfate Incremental Gross Margin ($/lb)
Incremental Produced Zinc Sulfate Incremental Margin (%)
Total Zinc Sulfate Incremental Production Cost ($/lb)
Produced Copper Incremental Gross Margin ($/lb)
Incremental Produced Copper Incremental Margin (%)
DEMET (simple) Payback Period - bottom (years)
DEMET (simple) Payback Period - top (years)
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$
$
3.0
3.9
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Application
DEMET readily integrates into existing processes
Residual metal value is captured
Lessens sludge creation and lowers treatment costs
Current
Practice
DEMET
Enhanced
Treatment
ARD
Metals
DEMET™
Treatment
Conventional
Wastewater
Treatment
Sludge
Sludge
$$$
$
Metal
Product
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Key Impact Areas
Improves bottom line while mitigating
environmental challenges
DEMET is green and “Green $$$”
• 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
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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)
International Network for Acid Prevention (INAP), 2009. The Global Acid Rock Drainage Guide. http://www.gardguide.com
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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
D-T
D-T
D-T
D-T
Adapted from: http://www.gardguide.com/index.php/Chapter_7
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Operation
We profitably recover valuable products from waste streams
INPUTS
ARD
Electricity
Water + Na2SO4
Product Input
DEMET Input
(weak stream)
Metal
Removal
OUTPUTS
Clean
Water
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Generate
Acid/
Concentrate
Product
Saleable Metal
Saleable
Concentrate
Precipitation Plant
(polish)
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Implementation
A flexible risk reducing staged approach ensures best ROI
Bench
Verification
Operation
Lab Pilot
Commissioning
Pilot Process
Optimization
General
Module
Selection
(Intermediate
Scale)
Construction
Economic Validation
(Intermediate Scale)
Pilot Field
Validation
Scale Up
Site Specific
System Layout
(Full Scale)
Site Specific
Portable Testing
Pilot
Scoping
Evaluation
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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Project Timeline/Financials
Rapid project payback and fast implementation
Construct
Cost ($k)
10,000
1,000
Operational
Validate Module
Design
System
100
Shake
down
Develop
Spec
Typical CAPEX $10M-$15M
Typical Net Savings $5M/yr
Scoping
Tests
Typical Payback
10
39-51 months
Full-Scale Project Initiation
0
0
3
6
9
12
15
18
Time (months)
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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
•
•
Equipment
Moveable skid
mounted system
Fixed installation
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Operation
• Buy Equipment
• Rent Equipment
• Service Contracts
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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
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Contact
For More Information
Dr. Patrick James
President
6083344828
[email protected]
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