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One of the most pressing topics in the production of mineral wool is the recycling of waste and off-grade raw materials .

During the production process, several groups of waste are generated. They can be initially categorized into resinous waste and non-resinous waste.
The first group includes such waste as “shots” from the centrifuge, strip edge trimmings, and rejects. The second group includes mainly fine fractions of raw materials and basalt dust.

Regardless of the group, the waste cannot be used for remelting in the same form in which it was collected.It must either be briquetted, which is a quite costly and ineffective method, or crushed into dust and further processed using the IBE smelter.

In our technology, the waste of both groups is physically separated, being in different bunkers, and mixed in a pre-set proportion before being fed to the melting unit.
Subsequently the melt can be used in the same way on the existing line, or – which is considered the most optimal solution – on a separate line IBE13R with a capacity of 8,000 or 16,000 tons of product p.a.

This line is compact and economical, and the cost of production of blocks on it does not exceed 2/3 of the cost of production from primary raw materials.

Thus, the IBE13R line  not only allows to avoid waste disposal costs, but the production of the same product turns out to be no less than 1/3 cheaper than production from primary raw materials.

The average cost of producing standard blocks from the a.m. waste for the European region is 160-180 €/t.

The main technical data of the IBE13R line are given below:

– production area – 1,000 m2
– energy consumption – 0.8 MWh per 1 t of product
– the need for service personnel is 5-6 people per shift
– block width – 1.300 mm
– block thickness – from 20 mm to 400 mm
– recommended capacity – 8,000 tons p.a. (with the possibility of expanding up to 16,000 tons p.a.).

Please contact us if you have any questions regarding waste processing on the IBE13R line.



The new inductor was tested. Remarkable vertical distribution of temperature was achieved. The maximum difference of temperature amounted to 100°C.

The aim of next stage is to replace the generator. The optimization of the generator frequency toward its considerable reduction will allow to achieve a similar horizontal distribution of temperature.


The commissioning of Isobasalt in Großwilfersdorf is ongoing. Currently the focus is set on improving the construction of inductor.


Isobasalt insulation plant in Styria (Austria) constructed with participation of IBE was named “Global Insulation Plant of the Year”.

13th Global Insulation Conference

IB Engineering GmbH participated in the 13th Global Insulation Conference, 25-26 September 2018, Vienna, Austria. Conference review


A soft start of the melting unit and fiberizing system was performed at Isobasalt plant in Großwilfersdorf, Styria (Austria).