MINE WATER MANAGEMENT
The five key lessons learned in implementing a mining water evaporation solution.
FEATURING
SEPTEMBER 2021
WEBINAR
MINE WATER MANAGEMENT 1. WELCOME 2. EDUCATION 3. SELECTION 4. APPLICATION 5. PERFORMANCE 6. OUTCOME 7. SUMMARY 8. Q&A The five key lessons learned in implementing a mining water evaporation solution. AGENDA
SPEAKERS
OUR
OUR SPEAKERS
CHAPADA, BRAZIL
APPLICATIONS
• Process & produced water disposal • Tailings & storage dam overloading increasing risk of catastrophic failure and collapse • Legacy & mine closure site wastewater issues • Landfill water management • Closure of ash basins, dewatering • Leachate water management • Uncontrolled release of contaminated mine water causing environmental harm • Extreme rainfall events and flooding
1
EDUCATION
#
UNDERSTANDING WATER EVAPORATION MANAGEMENT SYSTEMS
1. 2. 3. 4. Appropriate (Air/Water) 2000:1 Ratio Water Droplet Particle Size High-Velocity Air Stream Large 4mm dia. Orifice Water Fracturing Nozzle Design FOUR KEY PRINCIPLES
EVAPORATORS IN ACTION
PANEL DISCUSSION
SELECTION
#2
COMPARING WATER EVAPORATION TO OTHER ALTERNATIVE APPROACHES
COMPARISON
EVAPORATION PERFORMANCE MODELLING
• Site Specific Meteorological Data Modeling • Optimum Site Specific Air to Water and Energy Ratio Selections • Chemical and Physical Characteristics of the Water • Droplet Evaporation Modeling
EVAPORATION EFFICIENCY ESTIMATES
EVAPORATION EFFICIENCY ESTIMATES
EVAPORATION EFFICIENCY ESTIMATION Based on 41.5% a single 600/300 evaporator will evaporate… 41.5% > 56m3 / 249 GPM > 896m3 / 358,560 GPD Hour Day Year > 327,040m3 / 130,874,400 GPY BY THE NUMBERS
PERFORMANCE MODELLING
PROBLEM SOLVING
COMMUNICATION
QUALITY
PRODUCT +
+
+
+
PANEL DISCUSSION
3
APPLICATION
#
ENGINEERING & INSTALLING A NEW SYSTEM
SOLUTION
COMPLETE ENGINEERED
• Evaporation efficiency modelling • Water quality analysis and review • Materials of construction selection • Plume modelling and analysis • Designing system requirements to achieve target evaporation rates • Design of automation control & operational parameters • Design & scope of mechanical and electrical requirement • Construction & Operation
UNIT LAYOUT OPTIONS
UNIT LAYOUT OPTIONS
TURNKEY SOLUTIONS
ELECTRICAL MCC ON SITEBANK OF EVAPORATORS OPERATING
PIPEWORK SET UP WEATHER STATION ELECTRICAL CABLE
PUMP ON SITE
MINETEK MODEL 600/300 EVAPORATOR 600/300 UNIT, FITTED WITH OPTIONAL SAFETY PLATFORM AND STAIRWAY 600/300 Water Flow Rate 600 GPM (135m3/hr) Power 120 HP (90kw) Pressure 145 PSI (10 Bar) Mobile skid mounted unit Galvanised steel, EPOXY coated or 316 Stainless steel 316 Stainless steel wetted parts Globally patented technology
MINETEK EVAPORATORS 600/300 400/200 200/100
ENVIRONMENTAL MANAGEMENT SYSTEM (EMS)
To maximise the performance of the MINETEK
Evaporators, a control system is available to autonomously operate the Evaporators under varying environmental conditions.
The automation systems are designed by MINETEK and utilize high quality PLC’s, robust Australian made weather sensors and high quality motor control components to provide the tools necessary for autonomous operation.
shut down due
High humidity
Rain
Automatic
to: •
•
• Excess drift (high wind speed) • Unfavorable wind direction • Set time periods
AUTOMATIC ANGLE ADJUSTER (AAA)
The Automated Hydraulic Angle
Adjuster automatically adjusts the angle of the Evaporator based on different wind speeds.
This mechanism works in conjunction with the EMS and provides flexibility for the evaporator to operate in a broad range of weather conditions.
PANEL DISCUSSION
PERFORMANCE
#4
ASSESSING THE CAPABILITIES OF WATER EVAPORATION MANAGEMENT
CHAPADA, BRAZIL
CASE STUDY: GOLD MINE IN NUNAVUT
Client: Gold mine in Nunavut System Configuration: 5 x Model 400/200 evaporators, stainless steel Automation: Fully automated design System Capacity: 2000 GPM (450m3/hour) pumped (5 units) Task: Gold mine tailings dam effluent management solution to reduce volume or TSF. Water Quality: Extreme saline water Seasonal northern climate
CASE STUDY: GOLD MINE IN BRAZIL
Client: Gold mine in Brazil System Configuration: 2 x Model 400/200 & x 600/300 evaporators, stainless steel System Capacity: 2000 GPM (450m3/hour) Task: Gold mine tailings dam effluent management solution to reduce volume of TSF. Features: EPOXY coated evaporators for low pH water, sound attenuation package. Urgent delivery
CASE STUDY: POWERPLANT IN MONTANA
Client: Powerplant in Montana System Configuration: 10 x Model 400/200 evaporators, stainless steel Automation: Fully Automated design System Capacity: 4000 GPM pumped (900m3/hour) pumped (10 units) Water Quality: Coal ash pond water, high TDS
PANEL DISCUSSION
OUTCOME
#5
EVALUATING THE RESULTS
DID WE OFFER THE BEST SOLUTION?
PANEL DISCUSSION
Q&A OPEN QUESTION & ANSWERS SESSION
ON THE HORIZON
MINEXPO 2021 SEPTEMBER 13TH – 15TH 2021 LAS VEGAS – NEVADA, USA BOOTH: 3165 NORTH HALL B.C MINE SYMPOSIUM SEPTEMBER 22ND – 23RD 2021 VIRTUAL EVENT SEE MORE OF MINETEK
THANK YOU • ON DEMAND ACCESS • SESSION LINK PROVIDED VIA EMAIL • OUR TEAM WILL BE IN TOUCH
