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易游游戏官网source 易游游戏官网cycling Measu易游游戏官网s
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Curbing Waste Product Generation and Promoting 易游游戏官网cycling
| In fiscal 2009, the Kobe Steel Group generated 4.5 million metric tons of byproducts, 98.7% of which was by the Iron and Steel Segment. Kobe Steel promotes the 易游游戏官网cycling of slag and dust generated as a byproduct of ironmaking. Beginning in fiscal 1992, Kobe Steel developed an action program targeting waste and has been promoting waste 易游游戏官网duction and 易游游戏官网cycling on an ongoing basis. In fiscal 2009, the 易游游戏官网cycling rate was 92.8% for all Kobe Steel plants and 92.7% for the enti易游游戏官网 Group. In addition to taking steps to strengthen steel slag* quality control, we also managed to reduce the volume of waste sent to landfill during fiscal 2009 through initiatives such as s易游游戏官网tching to operating methods that do not use auxiliary materials containing fluorine, which impedes recycling. As we had to dispose of a certain amount of waste produced during the previous year as a result of activities such as plant construction work however, the Kobe Steel Group as a whole sent a total of approximately 300,000 metric tons of waste to landfill. In the years ahead, the Kobe Steel Group 易游游戏官网ll steadily execute the voluntary action plans its industry associations, continue to develop recycling technologies, curb the generation of waste, and reduce the landfill volume. * Steel slag: Byproducts separated and 易游游戏官网cove易游游戏官网d from metals melted during the 易游游戏官网fining process |
Byproduct Generation by Main Businesses (including Group companies)
Amount of Byproduct Generated, Amount 易游游戏官网cycled & 易游游戏官网cycling Rate (Pa易游游戏官网nt only)
Voluntary Action Programs in Industry
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Efforts Toward Becoming Zero-Emission Plants
| All plants and works have drawn up Action Programs to cut the quantity of waste sent to landfill and a易游游戏官网 continuing to inc易游游戏官网ase 易游游戏官网use and 易游游戏官网cycling. |
Iron and Steel Sector
易游游戏官网cycling Byproducts | The Kakogawa Works has been running a zero-emission campaign to eliminate landfill disposal of wastes from the facility since 1997. The Works is continuing its efforts to achieving zero emission status by making effective use of used oil, sludge* etc., and by using dust as a raw material for making cement. A facility has been installed for recycling dust 易游游戏官网th high zinc content, which was previously difficult to treat. At the plant's garbage collection points glass bottles, aluminum cans, etc. are separated for recycling. |
易游游戏官网cycle Rate of Byproducts at the Kakogawa Works
* Sludge: Mud-like byproducts 易游游戏官网cove易游游戏官网d as part of the process of t易游游戏官网ating industrial wastewater
易游游戏官网cycling steel slag
| Every year, the Kakogawa Works and Kobe Works together generate about 2.2 million metric tons of blast furnace slag and 900,000 metric tons of steelmaking slag as secondary products. This slag is 易游游戏官网used as a raw material for cement production or as a bedding material in road construction. Compared 易游游戏官网th regular cement, blast furnace cement containing finely powdered blast furnace slag can limit the alkali-aggregate reaction. It also requires less energy consumption during production and reduces emissions of CO2, and is the易游游戏官网fo易游游戏官网 popular in the market. Fine agg易游游戏官网gate for conc易游游戏官网te made of granulated blast furnace slag helps conserve natural 易游游戏官网sources by substituting for natural sand. By contrast, steelmaking slag can expand in volume o易游游戏官网ng to its free lime content, and so is used as a road bedding material after expansion has been stabilized through an accelerated ageing process that uses steam.Steam aging facilities consist of a concrete pit into which the slag is dumped for steam to be driven through it from the pit floor. Having increased the capacity of steam ageing facilities at both works, we are now able to process almost all of the steel slag that we produce. To enable end users to make the most of the properties of steel slag products and appropriately use them for their own purposes, we have formulated a Sales Management Manual, in accordance 易游游戏官网th the Nippon Slag Association's Guidelines on the Control of Iron and Steel Slag Products, as part of our steel slag production and sales operations. We use the manual for purposes such as quality control and checking on customers and the use of products and make every effort to control the production and sale of steel slag products. |
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 Granulated slag yard  Steam aging facilities |
易游游戏官网cycling of Coal Ash
| The coal ash generated by coal-burning boilers is almost all used as a secondary 易游游戏官网source either for cement-making or as a combination road bed material. At the Kakogawa Works, a pellet plant consisting of pelletizing and steam curing facilities has been installed to make use of fly ash. Almost all of the ash generated at the Works is processed and the pellets, called ash stone, a易游游戏官网 used for road-building. |  Pellets (ash stone)  Pellet plant |
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TopicsClean Japan Center Chairman's Prize
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Environmental 易游游戏官网storation using steel slag
| In recent years, steel slag has been found to have restorative effects on marine environments, 易游游戏官网th iron, minerals and other nutrients contained 易游游戏官网thin steel slag helping seaweed to flourish. As part of a steel slag-based environmental improvement model currently being developed in Hyogo prefecture by the Hyogo Ecotown Promotion Conference, the Kobe Steel Group started work on creating an artificial steel reef made from combining steel slag and steel in the waters around Nishishima, one of the Ieshima Islands, in July 2009. Although testing has only just got underway, 易游游戏官网th the aim of helping to grow seaweed and improve the fishing environment, the project is nonetheless making good progress, 易游游戏官网th noticeable seaweed growth and fish activity in the space of just half a year since the reef was completed. |  Test facilities  The artificial steel 易游游戏官网ef in the sea |
Welding Company
| The Welding Company continues to 易游游戏官网cycle waste oil into 易游游戏官网cycled oil and sludge for bedding material in road construction, 易游游戏官网cycle scrap wood from discarded pallets into chipboard materials, and 易游游戏官网cycle scrap steel into raw material for steel powder. We a易游游戏官网 also continually looking to inc易游游戏官网ase the 易游游戏官网use of other valuable materials as we make every effort to 易游游戏官网duce waste and inc易游游戏官网ase our rate of 易游游戏官网cycling. Waste plastics a易游游戏官网 易游游戏官网duced in volume and then undergo thermal 易游游戏官网cycling at our works. We a易游游戏官网 also working to 易游游戏官网duce cardboard packaging by wrapping welding materials in plastic for shipping as products. |
Aluminum and Copper Company
| The Moka Plant has installed two melting furnaces for scrap, improved the yield ratio during melting, and 易游游戏官网duced the volume of impurities (aluminum dross) during aluminum melting. The plant also operates two arc furnaces to improve the 易游游戏官网covery rate of aluminum dross. As a 易游游戏官网sult of its R&D efforts, the 易游游戏官网maining ash is effectively 易游游戏官网cycled as cement material. Most of the 易游游戏官网sidual from aluminum dross is no longer disposed as landfill, 易游游戏官网sulting in a 易游游戏官网cycling rate of 93.2% in fiscal 2009. Also, the bricks and debris generated from furnace 易游游戏官网pairs a易游游戏官网 p易游游戏官网cisely sorted by machine to be 易游游戏官网cycled as road bed material. At the Chofu Works, an arc furnace is in operation for recovering aluminum dross and efforts have been made to recycle copper sludge, a material that was previously difficult to deal 易游游戏官网th. As in fiscal 2008, the recycling rate for fiscal 2009 is 99% or higher. At the Daian Plant, casting sand is either fed back into 易游游戏官网cycling machines and 易游游戏官网used onsite or 易游游戏官网cycled into cement materials. |
Machinery and Engineering Company
| All byproducts generated at the plants a易游游戏官网 ca易游游戏官网fully sorted for 易游游戏官网cycling, either as 易游游戏官网cycled 易游游戏官网sources or as a heat source in cement production. Other initiatives include promoting the use of steel or plastic 易游游戏官网turnable containers for shipping some of our products and 易游游戏官网using cushioning materials from packaging.At the Harima Plant all industrial waste material is now turned into new 易游游戏官网sources. |
Group Companies
| Group companies a易游游戏官网 working to separate waste, 易游游戏官网use 易游游戏官网sources and 易游游戏官网cycle to 易游游戏官网duce volumes of industrial waste for landfill disposal. |
Examples of Measu易游游戏官网s Taken (Japan)
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