Kawasaki Jukogyo Kabushiki Kaisha

Ishii Syoji, Ltd.

Electric Power Development Co., Ltd.

Ishii Syogi, Ltd.

Keiji Imai

Tatsuo Hagiwara

Shigenori Nagaoka

Toshitsugu Kikuchi

Hidenaga Ishii

Takeshi Imagawa

Shinji Kogumazaka

Kyoichi Yahagi

Yasuyuki Nakabayashi

Yoshio Matsuura

Masashi Hatano

Yoshimasa Ebihara

Masaaki Mikamo

Yasutomo Tomura

A control method for crushing massive furnace slag using a swingable type crushing apparatus in which a crushing clearance is increased or decreased in a stepwise manner by a hydraulic mechanism depending on crushing conditions of the massive furnace slag, which may be blast furnace slag, convertor slag, and electric furnace slag. A hydraulic pressure of a hydraulic mechanism is detected as a variable of the crushing conditions and is compared with a set value so as to adjust the crushing clearance.

Method for crushing massive furnace slag using a swingable type crushing

An operational control method for a cylindrical crusher in which furnace slag is supplied to the cylindrical crusher through supply means and said furnace slag is crushed to obtain a furnace slag product, wherein particle size distribution and iron content ratio of a furnace slag product are detected and variable control of a supplying amount from the supply means and/or revolution speed of a cylindrical crusher is carried out within a predetermined range.

Operational control method for cylindrical crusher

A slag disposal method for disposing of slags produced in furnaces during iron or steel making processes comprises employing the steps of magnetic sorting of masses of crude slags of a size greater than a value ranging between 300 to 500 mm obtained from the furnaces into slags rich in iron (above about 50 to 60 percent) and slags not rich in iron (below about 50 to 60 percent) and then applying a compressive force to the slags rich in iron to cause a coarse crushing and/or deformation to reduce the size and at the same time increase the iron content due to the breaking and separation of the slags from the metal. Further magnetic sorting and sieving after griding are provided to obtain concentrates having high iron content and to improve recovery efficiency.

Slag disposal method

A shell structure of a heavy-load type rod mill including a barrel having an outlet port and with a plate thickness of t.sub.1, and a pair of trunnions having journals integrally formed thereon and with a plate thickness of t.sub.2, which trunnions are welded to the barrel. At the weld joining the barrel and the trunnion, the relationship between the plate thickness t.sub.1 of the barrel and the plate thickness t.sub.2 of the trunnion is t.sub.1 .ltoreq.t.sub.2 .ltoreq.2t.sub.1.

Shell structure of heavy-load type rod mill

A liner for the outlet port of a rod mill including a cylindrical body provided on the peripheral edge of an opening of the liner and projecting outwardly through the outlet port to prevent a rod from exiting the liner. The projecting length of the cylindrical body on the side close to the end portion of the barrel of the rod mill is preferably longer than that on the opposite side.

Liner for the outlet port of a rod mill

A slag breaker for breaking slags from furnaces has a stationary breaker plate and a rocking breaker plate defining therebetween a breaking chamber and provided on the opposing surfaces thereof with undulations. The size of the outlet of the breaking chamber is about 1/5 to 2/5 of that of the inlet of the breaking chamber. The size of the outlet of the breaking chamber is internationally changed cyclically and incrementally, by the operation of a hydraulic mechanism which is equipped with a specific dust proof means.

Rocking slag breaker

The apparatus comprises a milling machine including a heated rotatable drum connected to means for supplying coarsely crushed coal and preheated oil to the drum wherein the coal becomes finely ground and homogeneously mixed with the oil, and having a discharge duct rotatably connected to the drum and slidably connected to a stationary discharge tower in which the coal/oil slurry is separated from water evaporated from the coal during milling.

Growing community of inventors

Ibaraki, Japan

Keiji Imai