Project
Challenges
The Bag House Filter Plant filters supported by an 450kW induced draft fan. It operates 24/7, apart from short periods when the smelter in undergoing maintenance. The annual electricity cost is US$0.25M p.a.
Goals & Objectives
The primary objective was to develop a process redesign of the Bag House Filter Plant induced draft fan operation with a Variable Speed Drive to minimise its electricity use by allowing the fan speed to be reduced to match the batch cycle of the Anglo Converter with electricity reduction of 75%.
Solutions
Service provided
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
28% IRR
Capital Investment $0.35M
Annual Gross Savings $0.16M
2.5% COGS
Technologies applied
Induced Draft Fan
Equipment Optimisation
Meter Technology
Online Electricity Dashboard
ESG Impact
2,650 ton CO2 savings
Project Location
Rustenburg, South Africa