Abstract: A process and apparatus is disclosed for the chlorinating volatilization of impurity metals detrimental to the production of iron from a raw material which contains the oxides of the impurity metals and iron or which forms them in an oxidizing atmosphere, in which the pulverous raw material is at a high temperature of 900.degree. C. or more and in an oxidizing atmosphere contacted with a magnesium chloride in order to chlorinate and volatilize the impurity metals. The preheated raw material and anhydrous magnesium chloride are fed into a fluidized bed on an inclined grate, hot air being fed into the bed through the grate in order to volatilize the chlorides of the impurity metals, and purified raw material is discharged from the lower section of the fluidized bed into a separate chamber, in which it is rinsed with an air flow the flow rate of which is substantially higher than that of the air flow fed into the fluidized bed.

Abstract: A device for blowing gas and a finely-divided solid into a metallurgical melt is disclosed, the device having a blast pipe which has at one end an inlet connected to a gas source and at the opposite end an outlet immersed below the melt surface in order to blow the gas into the melt. A cooling device surrounds the blast pipe, the cooling device having, at that end which is near the blast-pipe inlet, inlets and outlets for the cooling medium, and a mantle of ceramic material which surrounds at least the lower part of the cooling device. In the outlet of the blast pipe there is a Laval nozzle which is at an angle to the blast pipe and extends through the thermally insulating mantle.

Abstract: A molten metal matte low in iron is oxidized by blasting oxygen or air into the metal layer to produce raw metal.