Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Kazumasa Taguchi

Mamoru Onoda

Isao Fujita

Ryo Watanabe

Nobuyuki Imanishi

Tsutomu Nishida

Hiroshi Isako

Koichi Ikeda

Keisuke Honda

Kan Aketa

Masaru Kanemoto

Masaharu Kitajima

Keishiro Hanaoka

Porous iron ore pellets and a process for manufacturing same, the pellets having a pore size distribution consisting of more than 30% of pores having a diameter greater than 10 microns and a balance of pores having a diameter smaller than 10 microns, a total porosity greater than 30%, and an FeO content less than 1% by weight.

Porous iron ore pellets

In the present invention, after a powdered iron ore has been subjected to granulation and firing into spherical pellets, a further crushing is applied while adjustment of the particle size of the crushed pellets is made so that the outer surface of the pellets is composed of spherically formed surfaces and crushed surfaces. By doing so, improvements are made in the angle of repose and in the reducing characteristic of iron ore pellets, and eventually an efficient and highly economical blast furnace operation is attained.

Iron ore pellet having a specific shape and a method of making the same

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Amagasaki, Japan

Kazumasa Taguchi