Cement Recycling Systems for Waste and By-product.

We recycle waste and by-products into mineral resources for cement. In fiscal 2008, we recycled 390.1 kg of waste and by-products into mineral resources per ton of cement manufactured. This helps to extend the lifetime of landfills, prevent the depletion of natural mineral resources and reduce air pollution.

Trends ln Use of Waste and ByLproducts per Unlt Productlon
Waste and By-products Consumption in Cement Plants (FY3/2009)
Waste and By-products Total Consumption (t) Rate of Consumption
(kg / t-cement)
Industrial Coal Ash (including JIS fly ash) 1,916,754 110.5
Blastfurnace Slag 1,107,795 63.8
Construction Soil 748,091 43.1
Byproduction Gypsum 613,339 35.3
Dirt and Sludge 516,791 29.8
Wood Chips 93,620 5.4
Waste Plastic 82,508 4.8
Other 1,243,893 71.7
Subtotal 6,318,794 364.4
Household Water Treatment Plant Sewage Sludge and Ash 353,205 20.4
Municipal Incinerator Ash 76,506 4.4
Other Municipal Waste 15,793 0.9
Subtotal 445,503 25.7
Total Waste   6,768,294 390.1
Raw Material-Related 6,335,732 365.2
Fuel-Related 432,562 24.9