We have been planning, manufacturing and operating slag
processing facilities for many years

All the sorting and processing plants used by our company are custom-built and optimised on the basis of our many years of experience and the latest research findings in relation to its specific intended purpose. This means we can ensure that things run smoothly even under difficult conditions. The high level of reliability and the consistent high performance of our plants are the principal reasons for our international success.

Furthermore, in addition to our numerous stationary plants, we have access to a range of mobile facilities for use at your own site – in accordance with your preferences and specifications, or geological characteristics.

In order to be as flexible as possible at all times, we either obtain whatever is required for the job in hand, or we quite simply build it ourselves!

Turning secondary materials back into iron

In terms of quantity, the most important by-product of a steel plant is slag – this results from almost all metallurgical formation and processing operations. So-called LD slag results when pig iron is processed into steel. It is separated from the metal in the melt flow and then, whilst still in a viscous condition, is poured into so-called slag beds for cooling; the slag contains 4% iron – the LD slag then solidifies into a hard, stone-like material.

A special procedure ensures that the slag cools down evenly and, at the same time, prevents iron particles from fusing together again due to the prevalent high temperatures. After cooling, the entire material is dug out and transported away for further processing.

However, not all types of slag are suitable for re-use in the steel production process. LD slag, for instance, is less porous compared to blast furnace slag and also contains raw materials that are still valuable – which in effect means that it simply cannot be considered a waste product. Although the manufacturing process is similar worldwide, the chemical composition in the steel production process varies enormously, however.

are the most important elements of an efficient reconditioning process

The preparation process for scrapped or stored recycling materials involves breaking it down, sieving it and then cutting it out of the metal. The most important factor in ensuring a high quality end product is the use of an efficient method of metal separation.

Prior to the first crushing stage, the ferrous materials are separated out from the non-ferrous materials.
The individual steps for each procedure are always determined on the basis of the customer’s specifications for the end product. The bulk material is then transported to the plant, where it is sieved fully automatically and sorted according to its intended purpose. Material that is not suitable for re-use is definitively scrapped after sieving.

As the quality of the recycled end product is greatly dependent on the individual steps of the process, some materials may require several sorting processes.