It is one of the most advanced methods and the most difficult slag-retaining technology in converter steel tapping. The refractory material of the system is mainly composed of tapping bricks, inner nozzle bricks, upper slide and lower slag retaining technology. Composed of five refractory components such as skateboard and external nozzle bricks, the converter skateboard is one of the most critical components for the application of the slag-retaining technology of the skateboard. The tapping channel is formed by the tapping port, the inner nozzle, the slide brick and the inner hole of the outer nozzle brick, and the slag blocking function is realized by the movement of the lower slide plate.
