Nippon Kokan Kabushiki Kaisha

Haruo Ito

Shuji Kajikawa

Kazuo Kanai

Katsuhiro Iwasaki

Kenzo Yamada

Genji Nakatani

Kenji Ohkoshi

Yasuto Takasaki

Masaaki Higuchi

Yoshinobu Yanagida

Jiro Konishi

Masamichi Matsuda

Yoshihisa Hirata

Yoshinori Suetake

Mitsuru Ohtsuki

Method for adjusting chemical composition of molten pig iron tapped from

An improved apparatus for manufacturing a rapidly cooled solidified slag, the improvement relating to the use of pairs of weirs having an annular shape and a hollow portion therein; each of said pair of weirs being fixed to each edge of the peripheral surface of one of a pair of cooling drums so as to form a circular flange at right angles to the axial line of the one cooling drum around the entire circumference thereof.

Apparatus for manufacturing rapidly cooled solidified slag

An apparatus for manufacturing a rapidly cooled solidified slag, which comprises: at least one rotating cooling drum rotating around a horizontal center axis thereof, said cooling drum being cooled by a cooling medium, and having an outer peripheral surface comprising a plurality of jogs over the entire surface thereof; a slag sump arranged at a position where said peripheral surface of said cooling drum begins to rise, the depositing molten slag onto said peripheral surface of said cooling drum; a scraper proved at the lower part of said peripheral surface of said cooling drum; and a slag feeding means arranged above said cooling drum, for pouring said molten slag into said slag sump; whereby said molten slag poured into said slag sump is deposited onto said peripheral surface of said cooling drum, rapidly cooled through heat exchange with said cooling medium along with rotation of said cooling drum to become a solidified slag, and peeled off from said peripheral surface of said cooling drum by said scraper.

Apparatus for manufacturing a rapidly cooled solidified gas having

A runner extending from a blast furnace to a slag pit, water spray unit for manufacturing granulated slag or slag ladle is partly or wholly composed of a plurality of trough elements each made from copper or copper alloy. Each trough element comprises a hollow body having an inner space which is divided into sections by a plurality of partitions to define throughout the inner space of the body a series of passages in which a cooling medium is allowed to flow without stagnation. The cooling medium within the hollow body of the trough element is introduced under a predetermined pressure from a pipe line for supplying cooling medium into the body, whereby the cooling medium freely flows at a relatively high velocity in the passages defined by the partitions and molten slag glowing in contact with the surface of the trough element is cooled to a desired temperature which prevents wear and loss of the element and makes it possible to produce hard granulated slag from the molten slag.

Molten slag runner for blast-furnace plant

Growing community of inventors

Fukuyama, Japan

Haruo Ito