2. Metal/primary slag separation

If the processes envisaged, such as the use of synthetic slags or the injection of treatment agents, are to be effective, it is essential to avoid the entrainment of refining slag from the converter into the ladle. Solving this problem has given rise to a great deal of research: in the laboratory on cold models and, under industrial conditions, the testing of more or less ingenious devices.

• A study carried out in Germany, under the auspices of the German Steel Industry Association (VDEh) and subsidized by the European Community, has clarified the problem thanks to tests carried out partly on a model and partly on an industrial site. . It has shown that slag entrainment can be caused by two flow processes (figure 1...