Abstract
This review gave an outline about effectiveness and the energy saving of the steel process. The main points are that the example of the energy-saving action of the iron and steel making process, using of by-product gas and waste heat recovery, technique to reuse by-producing slag or dust effectively, technique to use the waste such as the waste plastic and waste tires which occurred in society by using steelmaking processes effectively. The energy efficiency of the steel industry of Japan becomes the world’s best level by these actions.
Finally iron and steel are superior material in the resource sustainability because iron and steel after the use can be almost recycled by using of the blast furnace method and the electric furnace method if it can be collected.
