cement kiln co-processing an essential part of the waste management toolkit

Cement Kiln Co-processing An essential part of the waste management

toolkit

Presentation to the Environmental Portfolio Committee

11 March 2008

Dumisani TembeEgmont Ottermann

Economic Growth

• Victims of our own economic success as a nation

• Economic success has created sustainability challenges

Energy Efficiency Challenges

Waste Management Challenges

Air Quality Challenges

Energy Challenge

• South Africa’s coal resources under pressure• Cement industry faces similar problems to

Eskom (quantity and quality of coal)• The cement industry risks becoming non-

competitive internationally due to excessive resource input cost locally

• Solution: better utilisation of available energy resources

Waste Management Challenge

Prevent

Re-use

Recycle

Dispose(including incineration, landfill, chemical treatment )

Recovery(Including Co-processing)

EU decision on Waste Hierarchy13 February 2007

Co-processing

• The South African Way: – We solve problems with existing resources!– We solve many problems with one solution!

• Using Internationally accepted best practice.– Co-processing is normal practice in the

cement industry world-wide

• Co-processing benefits recognised by WWF

Raw meal Raw meal

•CaO/CaCOCaO/CaCO33

• SiOSiO22

• FeFe220033

• AlAl22OO33

• Combustion gases: 1800-2200°CCombustion gases: 1800-2200°C

• Time > 4- 6 sec at >1450 °CTime > 4- 6 sec at >1450 °C

• Clinker : 1450°C > 15 min.Clinker : 1450°C > 15 min.

• Pre-calcinerPre-calciner

• Gases: ~1200 °CGases: ~1200 °C

• Raw meal: ~900 °CRaw meal: ~900 °C

Gases self-cleaning Gases self-cleaning (CaO)(CaO)

No ashNo ash

All minerals in final productAll minerals in final product

Co-processing in a cement kiln

Air Quality Challenges

• Potentially a non-issue because emissions are controllable

• The emissions from the co-processing of waste are essentially the same as when using conventional fuels. – EPA - FR40 CFR Part 60– European Union– Stockholm Convention

• Co-processing should take place in a regulated environment.

Co-processing and Climate Change

Sustainable Co-processing

Energy Efficiency

Effective Waste Management

Unchanged Emission Standards

Perceptions and Trust

• Acknowledge concerns of stakeholders – Communities– NGOs– Public representatives

• Cement kiln co-processing is controversial, but accepted internationally as best practice.

• We will implement international best practice, to generate confidence and build trust.

Co-benefits

• With co-processing: – Waste is diverted from landfills– Natural resource usage is reduced– Climate change impact is reduced– Jobs are created and empowerment is

enhanced– National solution (kilns in all provinces except

Free State)

ACMP Undertakings on Co-Processing

1. We will ensure occupational health and safety

2. We will keep our environment safe

3. We will not accept listed banned wastes

4. We will guarantee the quality of our products

5. We will offer waste management solutions to our partners

6. We will comply with relevant legislation and promote best practices.

7. We will communicate transparently

Prevent

Re-use

Recycle

Recover

Dispose

Co-processing = Co-Benefits!

Meeting Energy Challenges

Meeting Environmental

Challenges

Meeting Waste Management Challenges

Conclusion

Indeed, co-processing is a sustainable solution that is an important part of the waste management toolkit in South Africa.

The ACMP would be honoured to host the committee at a cement operation, as requested in the previous meetings.

We would be glad to take you questions and listen to your comments.

Thank YouDumisani Tembe - 084 491 1184

Egmont Ottermann - 082 650 7237