​clean aer project Clean AER Project

For a Better Tomorrow

Clean AER Project

​​Vale has completed its CAD $1 billion Clean AER (Atmospheric Emissions Reduction) Project. The project, which began construction in 2012, has reduced SO2 emissions from Vale's Smelter in Copper Cliff by 85% and metals particulate emissions by 40% from previous levels. Also, given the importance of climate change, the project will also reduce greenhouse gas emissions from the Smelter by 40%.​ 

These emission reductions reflect how far we have come both as a company and a community in terms of environmental stewardship and regreening our local landscape. In fact, the Clean AER Project has reduced emissions so significantly that our iconic Superstack will no longer be required and construction of two smaller and more efficient stacks is underway. The steel liners of those news tacks will be installed in 2019, allowing for the Superstack to be decommissioned in 2020.

The Clean AER project includes the installation of new converters in the Smelter, a new Wet Gas Cleaning Plant and a new Secondary Baghouse and Fan building. See new facility and smelter flowsheet fact sheets for further information.

SO2 Emissions Reductions

Vale’s SO2 emissions have dramatically declined since the 1970s, as indicated in the chart below.