Nippon Chemical Industrial Co., Ltd.

Makoto Katamura

Hiroshi Fukuoka

Kozo Sonobe

Takashi Fukuzawa

Kunio Hisamatsu

Kohsuke Takeuchi

Tatushi Tabata

A method for improving the characteristics of fused slag material is disclosed. This improved method results in a fused slag having resistance against pulverization at the cooling process or generation of yellowish turbid water due to contact of slag lumps with rain water, this method characterized by forming a slag treatment material by rough crushing a substantially dehydrated heat-treated material containing boron, and adding that slag treatment material to molten slag.

Slag treatment material

A steel slag or iron slag which is a by-product generated at the time of steel or iron metallurgy and a method of manufacturing the same are disclosed. This slag is characterized in that it contains at least 0.15 wt % of boron component in the form of B.sub.2 O.sub.3 and has resistance against degradation in the fused slag cooling-down process and against generation of yellowish turbid water at the time of contact of slag with rain water.

Modified steel slag and method of manufacturing the same

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Koriyama, Japan

Makoto Katamura