Nippon Kokan Kabushiki Kaisha

Yasuto Takasaki

Kenji Ohkoshi

Shuji Kajikawa

Kazuo Kanai

Yoshinobu Yanagida

Haruo Itoh

Akichika Ozeki

Haruo Ito

Genji Nakatani

Yoshihisa Hirata

Jirou Konishi

Jiro Konishi

An apparatus for manufacturing a rapidly cooled solidified slag, which comprises: a pair of cooling drums, the peripheral surfaces of said pair of cooling drums being in contact with each other and rotating in directions opposite to each other at the same peripheral speed; a pair of weirs provided at the both ends of said pair of cooling drums so as to be in contact with the both ends of said pair of cooling drums, said pair of weirs forming a slag sump in cooperation with the upper half of the peripheral surface of each of said pair of cooling drums, and a molten slag being poured into said slag sump; a pair of gas nozzles provided adjacent the peripheral surface of each of said pair of cooling drums, said pair of gas nozzles uniformly ejecting a gas onto the molten slag, which has been deposited on the surface of said pair of cooling drums in said slag sump, to blow part of said molten slag back into said slag sump, thereby uniformly reducing the thickness of said molten slag deposited on the peripheral surface of said pair of cooling drums; a cooling medium for cooling said pair of cooling drums, said cooling medium being supplied to each of said pair of cooling drums, and exchanging heat with said molten slag deposited on the peripheral surfaces of said pair of cooling drums, whereby said molten slag becomes a rapidly cooled solidified slag through heat exchange with said cooling medium, and is peeled off from the peripheral surfaces of said pair of cooling drums by means of a scraper.

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

An apparatus for manufacturing a vitreous slag, which comprises: a pair of cooling drums, the peripheral surfaces of said pair of cooling drums being in contact with each other, and said pair of cooling drums rotating in directions opposite to each other at the same peripheral speed; a pair of weirs provided at the upper halves of the both ends of said pair of cooling drums so as to be in contact with said both ends of said pair of cooling drums, a slag sump being formed by means of said pair of weirs and the bodies of said pair of cooling drums, and molten slag being poured into said slag sump; a cooling medium for cooling said pair of cooling drums, said cooling medium comprising a high boiling point heat medium having a boiling point under 1 atmospheric pressure of at least 200.degree. C., said high boiling point heat medium being fed into each of said pair of cooling drums, exchanging heat with said molten slag in said slag sump, deposited onto the peripheral surfaces of said pair of cooling drums, and being discharged from each of said pair of cooling drums under a pressure of up to 5 kg/cm.sup.2 for heat recovery, whereby said molten slag is substantially completely converted into a vitreous slag through heat exchange with said high boiling point heat medium, and is peeled off from the peripheral surfaces of said pair of cooling drums by a scraper.

Apparatus for manufacturing vitreous slag

Growing community of inventors

Fukuyama, Japan

Yasuto Takasaki