Waste-Based Fuels for Cement Manufacturing in Edmonton ABLehigh HansonJasper van de WeteringAFR/CO2 Manager – Region Canada

Lehigh Hanson is part of the HeidelbergCement Group

HeidelbergCement is one of the world’s largest building materials companies.

- 58,000 employees- 3,100 production sites- 60 countries- 146 year history

Globally, HeidelbergCement is:- Number 1 in aggregates- Number 2 in cement- Number 3 in ready-mixed concrete

What is Portland Cement ?Cement and concrete are not the same.Portland cement is a powdered mineral binder made by heating a mixture of limestone, clay, and other minerals in a rotary kiln to make clinker, which then ground to make cement.

Concrete is the hard stone like material used in construction made by mixing sand and gravel with water and cement.

• Concrete contains only about 10% portland cement.

• Concrete is the second most consumed material in the world after water.

Lehigh Cement in Canada

Lehigh Hanson operates three portland cement manufacturing plants in Canada:

Edmonton, ABDelta, BC

Picton, ON

The Edmonton plant supplies cement to the prairie provinces and north-eastern British Columbia by truck and rail.

Manufacturing portland cement is a thermal energy

and GHG emissions intensive process.

• Up to 8% of global CO2 emissions result from the cement manufacturing sector.

• Two thirds of a cement plant’s CO2emissions result from the conversion of limestone to lime.

• One third of a cement plant’s CO2emissions result from the use of fossil fuels.

A typical cement plant uses enough thermal energy to heat 35,000 average Canadian homes per year.

HeidelbergCement Sustainability Commitments 2030 define the key topics and core principles of our

corporate sustainability strategy. Three of these key topics speak directly to the use of low carbon

alternative fuels to replace coal and natural gas in Edmonton.

• Reducing our Environmental FootprintOur target is to reduce CO2 emissions per tonne of cement globally by 30% compared to 1990. (20% was achieved in 2018)

• Enabling the Circular EconomyOur target is to increase the proportion of alternative fuels globally to 30%.

(22% was achieved in 2018)

• Driving Economic Strength and InnovationHeidelbergCement clearly recognizes that sustainability is key to

maintaining our social license to operate.

“Our goal is to realize the vision of carbon neutral concrete by 2050.” – Bernd Scheifelle, CEO HeidelbergCement - May 13, 2019

HeidelbergCement Climate PolicyIn 2018, HeidelbergCement adopted a Climate Policy, in addition to the Sustainability Commitments

2030, which contains the following objectives:

1) A 30% reduction in our CO2 emissions by 2030, compared with 1990 levels.

2) Further investment in economically viable, innovative technologies to reduce process-related CO2 emissions,

such as carbon capture and utilisation.

3) Increased use of alternative fuels, especially biomass.

4) Continuous improvements to energy efficiency and the generation of renewable electricity where feasible.

5) Use 80% of the R&D budget to develop sustainable products, such as lower carbon concrete, promotion of

concrete re-carbonation and recycling, and the use of secondary cementitious materials.

6) Support development of construction solutions to improve energy efficiency of buildings and infrastructure.

Alternative Fuels Experience within the HeidelbergCement Group

• World-wide, HeidelbergCement operations derived 22% of the energy required to make clinker from alternative and waste-based fuels in 2018. Replacement levels > 70% were achieved by a number of plants.

• In Europe, the Waste Incineration Directive (WID) recognizes special benefits of processing waste derived fuels in cement kilns.

• Even hazardous waste-based fuels are permitted in some jurisdictions, so long as specific operating controls are in place and emission limits are met.

• Non-hazardous fuels used include Refuse Derived Fuels, construction/demolition waste, meat and bone meal, and bio-solids from wastewater treatment.

• In Canada, Lehigh Hanson has been using scrap tires in their Delta, BC cement kiln since 1995. Delta Plant scaled up their Alternative Fuel program in 2005 and again in 2015.

‒ Delta Plant currently derives between 20% and 30% of it’s thermal energy from alternative waste-based fuels.

Cement Manufacturing is Ideally Suited to the Use of Waste-Based Alternative Fuels

• No Additional Emissions - because alternative fuels replace fossil fuels.

• Reduced GHG emissions – a well designed mix of alternative fuels can reduce combustion emission by up to 50% compared to coal.

• Zero Residue – ash and residue are permanently bound in matrix of our final cement product.

• Inherent Scrubbing Effect – massive amounts of recirculating lime in system removes acid gases and heavy metals from exhaust gas.

Construction & Demo Waste =>

Non-Hazardous Waste Based Fuels for Cement

Manufacturing in EdmontonSolid wastes normally require processing to make them suitable for use as kiln fuel:

• Size Reduction – Typically less than 2 inches in two dimensions.

• Removal of metals, minerals, and miscellaneous detritus.

• Removal (or avoidance) of chlorinated matter.

• Removal (or avoidance) of moisture.

MRF Residuals =>

Next Steps• Permitting – work is underway to allow the

use of alternative fuels at the Edmonton cement plant.

• Supply – a supply network for high quality alternative fuels needs to be established. Multiple suppliers will ensure uninterrupted flow of material.

• Plant Infrastructure – Material storage, handling, and feed systems must be built. These require planning and capital.

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