Project
Challenges
The Automill supported by a 7MW induction motor rotates the Automill which processes 30,000 tons per day of run of mine ore. It operates 24/7, apart from short periods when the mine in not operational. The annual electricity cost to operate the Automill is US$8M p.a.
Goals & Objectives
The primary objective was to develop a process redesign of the control of the Automill with an Acoustic Feedback Control for Mill Feed conveyor to improve energy efficiency by 12.5%.
Solutions
Service provided
Design of Energy Efficiency
Energy Management Software & IT Energy Modelling
Techno-Economic Modelling to establish the Business Case
Project Management
Measurement and Verification of Energy Saving
Results and Benefits
Financial Results
50% IRR
Capital Investment $1.15M
Annual Gross Savings $0.6M
2.5% COGS
Technologies applied
Acoustic Feedback Control
Equipment Optimization
Meter Technology
Online Electricity Dashboard
ESG Impact
1,550 ton CO2 savings
Project Location
Phalaborwa, South Africa