Environment & Recycling

CSR2019Integrated Report 2019

Environmental Activities

Based on the fundamental philosophy underlying its environmental policies, Sumitomo Osaka Cement Group aims to contribute to the preservation of the global environment and create abundance in society by pursuing environmentally friendly manufacturing and distribution operations in order to maintain harmony between the environment and corporate activities. The Group uses natural resources in the manufacturing processes of its core cement business, consuming a significant amount of energy. At the same time, the Group's recycling technologies ensure the stable and safe use of waste materials and industrial by-products. In addition to recycling raw materials, the Group helps to preserve the natural environment and promotes energy reduction and energy efficiency initiatives, while working actively to decrease environmental impact and create a recycling- orientedsociety.

Use of Waste Materials and By-products

Sumitomo Osaka Cement Group proactively uses such waste materials and by-products as coal ash, sewage sludge, construction site soil, waste tires, waste plastics and ASR(Automobile Shredder Residue)as part of its raw materials and fuels. The use of such materials reduces the need for natural resources like limestone, clay and coal, and generates no secondary waste, as even burnt residue can be employed as a raw material for cement. The reduction of waste materials is helping to lessen the environmental burden caused by incineration and waste landfill as well as extending the life of final disposal sites.
  In fiscal 2017, the Company accepted 5.64 million metric tons of waste materials and by-products Moreover, the amount of waste materials and by-products per metric ton of cement produced exceeded the 500-kilogram level.
  The Company will continue to work to develop and introduce environmental technologies aimed at expanding the amount of waste materials used as well as the types of items that can be accepted for this use. In doing so, the Company will focus even more on environmental preservation and social contribution.

Environmental Topics

Acceptance and disposal of the construction soil from the metropolitan area
In July 2008, Sumitomo Osaka Cement Co., Ltd completed the construction of Shin Ichikawa Recycling Center in Ichikawa city, Chiba prefecture, and since then, it has been stably supplying the construction soil used as cement raw material to cement factories. Now, we can receive soil directly from construction sites. By introducing this equipment, Sumitomo Osaka Cement group is capable of handling the entire process of reforming soil to cement raw material.
In August 2015, we increased the processing capacity to 300,000 tons per year, 1.5 times as much as in the past, and now, we are ready to process the soil from the metropolitan area where the demand of processing is expected to be strong due to its redevelopment work.
Environmental Activities
Converting general waste incineration ashes to cement raw material
Ako factory, Kochi factory and Hachinohe Cement recycle incinerated ashes of general waste as cement raw material. Hachinohe Cement accepts ashes carried by cargo train from incineration facilities in central Tokyo etc. In cooperation with the Hyogo Environmental Advancement Association, the Ako factory accepts and processes the ashes of incinerated urban wastes including dust.
 Since cement recycling of general waste incineration ashes leads to reduction of environmental burden, such as prolongation of waste landfill sites, we will continue to strengthen our business in this area in order to increase our contribution to the communities and to promote recycling societies.
Environmental Activities
Regional contribution through the processing of disaster waste
The cement industry has know-how of producing cement using industrial waste. We take advantage of this know-how to dispose of disaster waste. Our group carried out cement recycling of disaster waste generated by Great East Japan Earthquake in 2011. We also accepted and processed the disaster waste, such as submerged tatami mats and rice at Kanto Tohoku torrential rain disaster in September 2015, as well as the wood scraps generated at Kumamoto earthquakes.
Our group does our best to contribute to society by disposing of disaster waste and supplying cement, important material for reconstruction.
Environmental Activities

Environment & Recycling
Environment & Recycling
Integrated Report
  • Environment & Recycling
  • Corporate Profile Video