焼結鉱の粉化を抑制する最適な高炉炉壁伝熱条件

抄録

The interior of a blast furnace is excessively cooled down if wall bricks fall off from the front of staves by damage or deterioration. We built an experimental apparatus that can heat a wall from one side and cool it from the other side so that the reduction and disintegration of sinter by this cooling effect can be simulated. The temperature distribution in a lumpy zone was analyzed based on a proposed model.
It was found that the disintegration of sinter was accelerated by a delay in reduction caused by a strong cooling with an overall coefficient of heat transfer greater than 20 kcal/m²·h·°C. This implies that the disintegration of sinter in blast furnaces proceeds remarkably near the wall, resulting in a periphery gas flow distribution.