| 摘要 |
PURPOSE:To enhance the accuracy of the control of a blast furnace and to stabilize the operation by putting a cylindrical body provided with a water cooling and gas purging mechanism and a picture transmitting mechanism in the furnace and by observing the behavior of a burden in the furnace. CONSTITUTION:The cross-sectional shape of a cylindrical body 2 provided with a water cooling and gas purging mechanism and a picture transmitting mechanism 3 is made ellipsoidal or polygonal, and a protective plate 16 is adhered to the tip of the mechanism 3. Ventholes, 18, 19, 20 are pierced in a tube 12 supporting the plate 16, and an attachment 11 for branching purge gas is placed in front of the plate 16. Said cylindrical body 2 is put in a blast furnace 1, and while purging the surface of the plate 16 by feeding gas at an internal part of the furnace 1 to be observed from the ventholes 19, 20 an internal fixed point of the furnace 1 or the behavior of a burden due to dropping is observed. |
