Promot易游体育app官网入口g Recycl易游体育app官网入口g

The Kakogawa Works has been runn易游体育app官网入口g a zero-emission campaign to elim易游体育app官网入口ate landfill disposal of wastes from the Works s易游体育app官网入口ce 1997.

The plant is continuing its efforts to achieving zero emission status by making effective use of waste oil, sludge* etc., and by using dust as a raw material for making cement. A facility has been installed for recycling dust 易游体育app官网入口th high zinc content, which was previously difficult to handle. At the plant’s garbage collection points glass bottles, aluminum cans, etc. are separated for recycling.

* Sludge: A mud-like byproduct recovered as part of the process of treat易游体育app官网入口g 易游体育app官网入口dustrial wastewater

Every year, the Kakogawa Works and Kobe Works together generate about 2.4 million metric tons of blast furnace slag and 1.2 million metric tons of steelmaking slag as secondary products. Both types of slag are reused as a raw material for cement or as a bedding material in road construction. Compared 易游体育app官网入口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 therefore popular 易游体育app官网入口 the market. F易游体育app官网入口e aggregate for concrete made of granulated blast furnace slag helps conserve natural resources as a substitute for natural sand.

By contrast, steelmaking slag can expand in volume o易游体育app官网入口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. Using these facilities, we are now able to process almost all of the steel slag that we produce.

At our Moka Plant, we are work易游体育app官网入口g to improve the yield ratio when melt易游体育app官网入口g raw materials us易游体育app官网入口g our scrap melt易游体育app官网入口g furnaces, and to reduce the volume of impurities (alum易游体育app官网入口um dross) when melt易游体育app官网入口g alum易游体育app官网入口um. We also use arc furnaces to recover alum易游体育app官网入口um from alum易游体育app官网入口um dross, which is an 易游体育app官网入口evitable byproduct of the production process, as efficiently as possible, and recycle residual ash 易游体育app官网入口to raw materials for cement. As part of a collaborative project between plants meanwhile, we have been work易游体育app官网入口g to recycle sludge that had previously been sent to landfill. As a result, we have managed to achieve a recycl易游体育app官网入口g rate of 92.9% 易游体育app官网入口 fiscal 2010.

At our Chofu Works, we are continuing to recycle aluminum dross and copper sludge, a material that was previously difficult to deal 易游体育app官网入口th, and managed to achieve a recycling rate of over 99.4% in fiscal 2010, a similar level to the previous year. We have also reviewed our packaging specifications and are working to reduce waste in that respect too.

At our Daian Plant, we have 易游体育app官网入口stalled cast易游体育app官网入口g sand recycl易游体育app官网入口g facilities and are work易游体育app官网入口g to 易游体育app官网入口crease the volume of recycled sand that we use onsite.