cement kiln co-processing an essential part of the waste management toolkit
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Cement Kiln Co-processing An essential part of the waste management toolkit. Dumisani Tembe Egmont Ottermann. Presentation to the Environmental Portfolio Committee 11 March 2008. Economic Growth. Victims of our own economic success as a nation - PowerPoint PPT PresentationTRANSCRIPT
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Cement Kiln Co-processing An essential part of the waste management
toolkit
Presentation to the Environmental Portfolio Committee
11 March 2008
Dumisani TembeEgmont Ottermann
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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
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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
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Waste Management Challenge
Prevent
Re-use
Recycle
Dispose(including incineration, landfill, chemical treatment )
Recovery(Including Co-processing)
EU decision on Waste Hierarchy13 February 2007
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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
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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
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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.
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Co-processing and Climate Change
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Sustainable Co-processing
Energy Efficiency
Effective Waste Management
Unchanged Emission Standards
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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.
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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)
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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
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Prevent
Re-use
Recycle
Recover
Dispose
Co-processing = Co-Benefits!
Meeting Energy Challenges
Meeting Environmental
Challenges
Meeting Waste Management Challenges
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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.
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We would be glad to take you questions and listen to your comments.
Thank YouDumisani Tembe - 084 491 1184
Egmont Ottermann - 082 650 7237