Abstract: A method for treatment of metallurgical wastes i.e. slags, which are in liquid form by introducing water into the liquid slag thus causing it to cool at a slow rate so that the solidified slag contains a porous crystalline or utrified structure according to the rate of cooling, which structure is stable at ambient temperature. Another object of the invention concerns an apparatus for treating solid metallurgical slags, comprising a continuous conveyor formed of molds and means adapted to diffuse water into the liquid slag.

Abstract: A method for treatment of metallurgical wastes i.e. slags, which are in liquid form by introducing water into the liquid slag thus causing it to cool at a slow rate so that the solidified slag contains a porous crystalline or utrified strucutre according to the rate of cooling, which structure is stable at ambient temperature. Another object of the invention concerns an apparatus for treating solid metallurgical slags, comprising a continuous conveyor formed of moulds and means adapted to diffuse water into the liquid slag.

Abstract: A camera is arranged to map defects in the molten metal bath formed by scarfing using a scarfing torch on a steel slap. The camera has a field of a large area of the slab and records the defects as flashes of high intensity light the nature of which identifies the type of defect.

Abstract: The present invention relates to a process for the detection and recording of the weak points or defects on hot semifinished iron and steel industry products, by application of the flame of an oxygen-supplied blowtorch to the surface to be examined, displacing the application point along the surface, picking up the image of the application point by video camera, and transmitting the image to a remote location. An observer viewing this screen can make a map of the surface examined, recording thereon the weak points or defects detected both by their dimensions and by their type. This process finds application in the hot treatment of the slabs, blooms, and steel rods, when the casting, defect repair and rolling operations are to be carried out continuously.