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.
Other dry kilns
- 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.
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%
in the Japanese Cement Industry
Used pachinko machine as AFR
*)Excluding thermal energy from alternative fuels
Establishment of Material Recycling- Based Society
Incentivized Technology Transfer
Modernization of Facility
Cement Production (X10,000t）
Source : JCA (China 44% and India 6% of Global Production in 2004 )