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Hot reconstructive repair BF-9 of PJSC „MMK“ using robotic shotcreting technology

Hot reconstructive repair BF-9 of PJSC „MMK“ using robotic shotcreting technology

In early December 2020 Refracon completed the repair of blast furnace No.9 of PJSC „MMK“. During this project, the selected refractory materials were installed using modern robotic shotcreting technology.

The entire project of hot reconstructive repair was finished in only 48 hours due to several factors: installation without personnel accessing the inner space of the blast furnace as well as the use of advanced equipment and specially selected materials.
During the robotic shotcrete installation, the refractory materials in the nozzle of the shotcrete machine are dispersed with a liquid hardener and sprayed onto the repaired surface with compressed air. An advantage of this technology is the option of nonstop shotcreting. Layer thickness and speed of installation can be controlled by the operator from the top plate.
To complete this project Refracon used advanced resistant hydro-ceramic bonded materials produced by Seven Refractories. In total over 250 tons of refractory materials were successfully installed.
It is worth mentioning that despite difficult weather conditions Refracon was able to complete the project according to the time schedule and to fully satisfy the client’s needs.