Manufacturing uses 2 automatic basalt fiber insulating material fabrication lines by STM Tenova (Italy) and Gamma Meccanica SpA (Italy).

Mineral wool is a complex product to manufacture, as the production process consists of a series of sequential and interlinked steps. At the beginning of the production cycle, the raw stone raw material is transported by front-end loaders to the respective temporary storage bunkers.

forming - 1
forming - 2
product processing

At the start of the production cycle, the raw stone is taken by front loaders to the appropriate temporary storage bunkers.

The raw rock is then conveyed to the weighing shakers, which are used to accurately weigh the raw materials in accordance with the approved recipe.

The raw materials are then sent to a shaft furnace or to a blast furnace, where they are melted at a temperature of 1500 C, turning the rock charge into molten rock.

The melt then flows through a special opening in the cupola furnace into a multiple roller centrifuge from which centrifugal blowing method is used to produce fine fibres with a diameter of up to 8 µm and a length of 2 to 10 mm. Fibre-forming is carried out by the fact that the melt spreads over the wheels, where under the action of centrifugal forces and air flow the melt is torn from the wheels, and already during the flight the drops of melt are pulled into fine fibres.

In the fibre-forming process, a special binder solution is sprayed onto the resulting fibre. The fibres, treated with the solution, then fall onto a perforated conveyor belt, on the reverse side of which a vacuum reaction is created by fans. This procedure removes excess air from the conveyor belt, leaving only the fibres of the future thermal insulation material on the conveyor belt.