Kobe Steel, Ltd.

Fumikazu Kawaguchi

Mamoru Onoda

Isao Fujita

Tadao Tsutaya

Takeshi Sugiyama

Shoji Shirouchi

Yoshimichi Takenaka

Yoshimichi Takenake

Iron ore pellets having superior reduction and load softening properties in blast furnace operations. The pellets are prepared from a raw material to which is added an amount of magnesia or a MgO feeding source such as that the ratio of MgO to the SiO.sub.2 content of the raw material is at least about 0.5 and the CaO content in the raw material is adjusted so that the ratio CaO/SiO.sub.2 is less than about 0.05.

Iron ore pellets containing magnesium oxide

Fired iron-ore pellets are disclosed which are prepared by crushing iron ore to be pelletized, mixing a carbonaceous material of grain sizes ranging from 0.1 to 3 mm in diameter to the crushed iron ore in an amount of up to 4% by weight, pelletizing the mixture thus prepared, and firing the resulting pellets; thereby providing pellets throughout each of which is dispersed macro-pores of sizes ranging from 0.1 to 3 mm in diameter at a ratio of up to 25% relative to all pores contained in each pellet.

Fired iron-ore pellets having macro pores and process for producing the

Fired iron-ore pellets having macro pores

Growing community of inventors

Kobe, Japan

Fumikazu Kawaguchi