One of the most important structural elements of the unit for continuous conversion of matte by the method of the LGI – Gipronickel is the unit of blast supply to the melt. In industrial continuous conversion units, the critical periods of tuyere operation must be reduced to a minimum through stable operation of the unit, relatively small fluctuations in the bath level, maintenance of the optimal distance between the tuyere and the melt, and the optimal thickness of the slag layer on the bath. This will help significantly extend the service life of industrial tuyeres.