Climate Protection in the Japanese Cement Industry. Dec. 1, 2005. Yoshito Izumi, Ph.D. Japan Cement Association & Taiheiyo Cement Corporation. How dose Cement Industry emit CO 2 in the Processes?. Extraction Raw materials preparation Grinding, Drying, Homogenising Processing
Dec. 1, 2005
Yoshito Izumi, Ph.D.
Japan Cement Association&Taiheiyo Cement Corporation
Grinding, Drying, Homogenising
Preheating, Calcination (CaCO3 CaO+CO2)
The main opportunities for CO2 reduction are (1)Energy related improvement and (2) Material Recycling.
CO2 Reduction Opportunities (Technologies for More Energy Efficient)
Other dry kilns
CO type in Japan2 Reduction Opportunities (Material Recycling)
- Co-processing Technology
Reduce CO2 emissions from fossil fuel in our society by utilizing AFR
Q:This is not fully recognized yet.
- Lowering the clinker factor in cement
Q: Applicability depends on an availability of cementitious sources in a geographical area as well as market acceptance.
Co-Processing Technology reduces CO type in Japan2 emissions in our society
Source: CEMBUREAU, Alternative Fuels in Cement Manufacture, 1997.
CO2 from waste incineration in Japan : 24 million tons.
Cement Industry in Japan : 18 Companies
Total Investments : US$ 300 Million
- Energy related improvements 10%
- Increase of alternative fuels 85%
- Facilities for blending cement 5%
Alternative Fuels and Raw Materials type in Japan
in the Japanese Cement Industry
Used pachinko machines are crushed and kneaded type in Japan
Used pachinko machine as AFR
*)Excluding thermal energy from alternative fuels
Establishment of Material Recycling- Based Society
Incentivized Technology Transfer
Modernization of Facility
Transition of Cement Production for Asia and Japan Cement Industry
Cement Production (X10,000t）
Source : JCA (China 44% and India 6% of Global Production in 2004 )
Climate Protection in the Japanese Cement Industry Cement Industry