RU94009428A - Blast furnace blast furnace - Google Patents

Claims (1)

The invention relates to the equipment of the blast furnace tuyeres. The purpose of the invention is the creation of a simplified design of the tuyere while increasing its reliability in operation. The blast furnace tuyere contains a housing 1 with a conical inner surface 2 and with an annular water-cooled cavity 3. A flange 4 with a supply pipe 5 and a water drainage pipe adjoin the housing 1. In the conical inner surface 2 of the housing 1 there is a ceramic insert 7 protruding into the blast furnace beyond the limits of the housing 1. Between the outer surface of the ceramic insert 7 and the inner surface 2 of the housing 1, a compensation gasket 8 of insulating material is installed. Water for cooling the tuyere enters the pipe 5 into the water-cooled cavity 3 of the housing 1 and, after passing through the entire cavity 3, is withdrawn through the pipe from the tuyere. If it is necessary to change the ceramic insert 7, the flange 4 is first separated from the housing 1 and the ceramic insert 7 to be replaced is removed from the housing 1 beyond the limits of the blast furnace together with a compensating gasket 8. Then, a compensating gasket 8 and a new ceramic insert 7 are placed on the conical surface 2 of the housing 1, after which the flange 4 is mounted on the housing 1 again.