Supplementary Material for Integrated Report 2020

Material Balance

The KOBELCO Group promotes environmental management taking the environment into consideration at every stage of its operations. As part of this approach, the Group continuously strives for greater energy efficiency; effective use of byproduct gases, waste heat, water and other resources; and the recycling of byproducts.

Resource and Energy Use at デュエルビッツブックメーカーel, Ltd.

Iron & Steel Business

At デュエルビッツブックメーカーel, Ltd., 94 percent of the energy used is consumed by the Iron & Steel Business. In fiscal 2019, this business division used 10.38 million tons of iron ore; 5.36 million tons of coking coal and coke; 10PJ*1 of fuels such as coal, oil and city gas; and 660,000 MWh of purchased power. Nearly all of the byproduct gases—including coke oven gas, blast furnace gas and converter gas—derived from production processes are effectively reused as fuel for reheating steel or for use in in-house power plants.

In addition, byproducts produced during production processes, such as iron and steel slag*2, dust and sludge, are also turned to effective use as raw materials in applications such as cement and roadbeds. Together with in-company reuse, 96 percent of the byproducts are recycled in this manner.

In the future, デュエルビッツブックメーカーel will continue to carry out environmentally friendly manufacturing practices throughout all aspects of its operations, striving for more efficient use of resources and energy and advancing the development of new technologies to that end.

  • *1: PJ=1015J

    *2: Iron slag and steel slag are byproducts separated and recovered during iron and steel refining. They are also called blast furnace slag and steelmaking slag.

Resource and Energy Use in the Iron & Steel Business (Fiscal 2019)

Resource and Energy Use デュエルビッツブックメーカーe Iron & Steel Business (Fiscal 2019)

Welding Business

Using metal wire rods, hoops, fluxes, soluble glass and other raw materials, the Welding Business produces welding electrodes and welding wires. In fiscal 2019 the Fujisawa, Ibaraki, Saijo and Fukuchiyama plants used a total of 160,デュエルビッツブックメーカーons of raw materials, 62,000 MWh of electricity, and 0.2 PJ of city gas and other fuels to manufacture 150,デュエルビッツブックメーカーons of products. This generated 13,デュエルビッツブックメーカーons of byproducts, of which 97 percent was successfully recycled.

Resource and Energy Use in the Welding Business (Fiscal 2019)

Input Output
Raw materials Products
Wire rods, hoops, fluxes, soluble glass, etc. 160,デュエルビッツブックメーカー Welding rods, welding wires, etc. 150,デュエルビッツブックメーカー
Energy Byproducts
Purchased power 62,000 MWh Amount produced 13,デュエルビッツブックメーカー
City gas, etc. 0.2 PJ Recycling rate* 97%

* Recycling rate indicates the rate of waste that is not consigned to landfills of the total amount of waste generated.

Aluminum & Copper Business

Using ingots and scrap as raw materials, the Aluminum & Copper Business produces a variety of aluminum and copper products.

In fiscal 2019, the business division used 430,デュエルビッツブックメーカーons of raw materials, 500,000 MWh of electricity, and 4 PJ of city gas and other fuels to create 410,デュエルビッツブックメーカーons of products.

During melting and casting, 31,デュエルビッツブックメーカーons of byproducts, such as slag, dust and wastewater sludge, were produced. However, 97 percent of these byproducts were successfully recycled.

Resource and Energy Use in the Aluminum & Copper Business (Fiscal 2019)

Input Output
Raw materials Products
Aluminum ingots, copper ingots, etc. 430,デュエルビッツブックメーカー Aluminum and copper products 410,デュエルビッツブックメーカー
Energy Byproducts
Purchased power 500,000 MWh Amount produced 31,デュエルビッツブックメーカー
City gas, etc. 4.0 PJ Recycling rate* 97%


* Recycling rate indicates the rate of waste that is not consigned to landfills of the total amount of waste generated.

Main Resource Use at デュエルビッツブックメーカーel, Ltd.

Main raw materials Unit FY 2017 FY 2018 FY 2019
Iron ore 1,デュエルビッツブックメーカー 11,430 10,370 10,380
Coking coal / coke 1,デュエルビッツブックメーカー 6,080 5,656 5,360
Aluminum ingots, copper ingots, etc. 1,デュエルビッツブックメーカー 490 470 430
Total 1,デュエルビッツブックメーカー 18,000 16,490 16,170

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