![close[]](/en/shared/img/sp/closeBtn.png)
Incineration Ash Recycling
Today, people enjoy convenient and comfortable lifestyles. Such lifestyles, however, produce vast amounts of waste. Municipalities collect general household waste and treat it in incinerators, leaving incineration ash and other residues. There are other categories of waste, including industrial waste generated by business activities, and industrial waste subject to special control, which requires advanced techniques to manage.
The Nippon Denko Group has developed technology to melt, solidify and detoxify this waste using dedicated electric furnaces, and is contributing to the achievement of sustainable development goals (SDGs) by deploying a perfect recycling business in which slag generated in the melting process (ECOLAROCK) and valuable metals are recycled.
Incineration Ash Recycling
Features
- Melting and solidifying waste at high temperatures breaks down dioxins and detoxifies and stabilizes heavy metals.
- The slag generated in the melting process (ECOLAROCK) is a safe, environmentally friendly product that can be recycled as building and civil engineering materials (e.g. roadbed materials, materials for river embankment work).
- Gold, silver, copper, and other valuable metals in the molten metal are recycled (urban mines).
History of the business
| 1995 | Chuo Denki Kogyo Co., Ltd. became the first private company in Japan to begin treatment of municipal incineration ash (non-industrial waste) by melting it in a ferroalloy furnace. |
|---|---|
| 2002 | A dedicated furnace was put into operation, and treatment of industrial waste was started. |
| 2004 | The second dedicated furnace was put into operation. |
| 2018 | The third dedicated furnace was put into operation. |
| 2022 | The fourth dedicated furnace was put into operation. |
