Voest-alpine Aktiengesellschaft

Alexander Patuzzi

Ernst Riegler

Manfred Schmidt

Manfred Eysn

Rupert Berger

An arrangement for preheating scrap includes a scrap treating furnace into which at least one exhaust gas duct from a metallurgical furnace enters. In order to attain a higher efficiency in preheating, the scrap treating furnace has a through chamber for a plurality of adjacently arranged or superposed scrap receiving vessels. Each of these vessels is provided with its own gas inlet opening and with its own gas exit opening. The scrap treating furnace also includes a charging means on one end of the through chamber to receive at least one scrap receiving vessel and a discharging means on the other end of the through chamber to receive at least one scrap receiving vessel. A conveying means for moving the scrap receiving vessels in cycles from the charging means to the discharging means as well as gas conducting means for connecting the gas exit openings with the gas inlet openings of neighboring scrap receiving vessels are arranged within the through chamber.

Arrangement for preheating scrap

In a mixing arrangement including a tiltable mixer provided with a refractory lining and having a horizontally arranged cylindrical mixing chamber with end walls, the mixing chamber is mounted on a base by means of a fixed bearing and an expansion bearing and is supported on the base by means of two aligning carrying trunnions connected to the end walls, one of the carrying trunnions being mounted in the expansion bearing and the other being mounted in the fixed bearing.

Mixing arrangement

A metallurgical vessel cooling system with cooling chambers provided on the wall of the vessel is arranged so that the cooling chambers can be quickly emptied of the cooling water by connecting the chambers to a pressure gas line. This system is particularly useful for one or more converters with a converter hood having cooling chambers extending in the generatrix direction and connected to horizontally extending coolant passages. These passages are in turn connected to a coolant supply system by means of coolant supply and drain lines. The supply or drain line contains supervisor or signalling devices for checking the pressure and/or temperature and/or amount of coolant. These signalling devices, in the case of a deviation from a predetermined value, actuate controls for separating the supply and drain means from the coolant supply system and connecting one of these conduit means to the pressure gas line.

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Linz, Austria

Alexander Patuzzi