Cement

1
Cement

1. Production rose by 60 in the last 10 years
2. China 44 of world production
3. Top 10 companies represent 55 of global
   capacity, but many very small plants
4. Little Trade Only 5.8 traded internationally
5. No global cement association

2
Cement energy use emissions
4.6 of global GHG emissions
3
Cement emissions intensities
Source Worrell et al (2001) Carbon Dioxide
Emissions from the Global Cement Industry in
Annual Review of Energy and the Environment
26303-29.
4
Scope for progress in cement

• Use of dry preheater rotary kilns ( 22
  reduction compared to wet kilns)
• Increased use of low carbon alternative fuels
  (15 reduction globally)
• Production of cement and energy at the same time
  (5-10) CHP principle
• Reduction of clinker productionemissions
• Increasing the amount of additives (7 reduction
  globally)
• Use of alternative binders ( 80)