June 10, 2004

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The Age of Cement EcofacturingTM
Toward a Sustainable Cement Industry

• June 10, 2004

Taiheiyo Cement Corporation
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Ecofacturing TechnologyTM
Utilization of Alternative Fuels and Raw
materials (AFR)
Mineral AFR
(Non)-hazardous AFR liquid, solid, coarse
particles,
(Non)-Hazardous AFR liquid, fine solid
particles, readily combustible
(Non)-hazardous AFR large pieces
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AFR Utilization in Japanese Cement Industry (2001)
Weight
Type of AFR
Use at cement plant
(000 ton)
Blast Furnace Slag
Raw Material,Mixing Material
11,915
Coal Ash
Raw Material,Mixing Material
5,822
By-product Gypsum
Raw Material(Additive)
2,568
Low Quality Coal from Mine
Raw Material, Fuel
574
Non-iron Slag
Raw Material
1,236
Revolving Furnace Slag
Raw Material
935
Sludge etc.
Raw Material, Fuel
2,235
Soot Dust
Raw Material, Fuel
943
Molding Sand
Raw Material
492
Used Tire
Fuel
284
Waste Oils
Fuel
353
Spent Activated Clay
Fuel
82
Waste Plastics
Fuel
171
Others
Raw Material, Fuel
450
28,061
Total
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Specific Electric Power Consumption vs Increase
in AFR Utilization
Specific Electric Power Consumption(kWh/t)
Unit Volume of AFR (kg/t-cement)
Fiscal year
Data from JCA
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Change in Specific Energy Consumption
Specific Energy Consumption (Coal conversion)
Fiscal year
Data from JCA
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Used tires to be burnt in a cement kiln
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Shredder for waste plastics
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RDF from the machines
Burnable wastes Used tire, Waste wood Sludge,
RDF etc.
Used pachinko machines are crushed and kneaded
Used pachinko machine as AFR
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Cement EcofacturingTM