Blast furnace tapping channel construction method and tapping channel
A construction method and tapping trough technology, which is applied in the field of metallurgical ironmaking equipment, can solve the problems of aggravating the loosening and deformation of the permanent layer, loosening and deforming the permanent layer, and affecting the life of the tapping trough, so as to eliminate the loosening problem, reduce the impact, and prolong the iron The effect of ditch life
Active Publication Date: 2021-09-03
MCC BAOSTEEL TECH SERVICE
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Problems solved by technology
Due to the thermal expansion and contraction of the steel shell, the overall permanent layer will be loosened and deformed, which will affect the life of the tapping channel, increase the number of maintenance, and affect the amount of iron passing
[0004] At the same time, during the construction of the existing permanent layer structure, because more clay bricks and high-alumina silicon carbide bricks tend to leave construction gaps during construction, there is a residual displacement space for the displacement of each brick, which also aggravates the subsequent permanent layer. Loose deformation
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[0036] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0037] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art w...
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The invention provides a blast furnace tapping channel construction method and a tapping channel. The blast furnace tapping channel construction method comprises the following steps that a steel shell layer is manufactured; ceramic heat insulation fibers are arranged on the inner surface of the steel shell layer, and a ceramic heat insulation fiber layer tightly attached to the steel shell layer is formed; a prefabricated part layer with a preset thickness is arranged on the inner surface of the ceramic heat insulation fiber layer, and the prefabricated part layer, the ceramic heat insulation fiber layer and the steel shell layer jointly form a permanent layer of the tapping channel; and a working layer is manufactured on the inner surface of the permanent layer. According to the technical scheme, loosening deformation of the permanent layer of the tapping channel is effectively reduced, the maintenance frequency is reduced, and the service life of the tapping channel is prolonged.
Description
technical field [0001] The present application relates to the field of metallurgical ironmaking equipment, in particular, to a construction method of a blast furnace tapping trough and the tapping trough. Background technique [0002] Blast furnace tapping trough is an essential channel for blast furnace iron tapping and an important facility in the ironmaking process. The safety and reliability of the tapping trough system is a prerequisite for ensuring the normal smelting of blast furnaces. [0003] The blast furnace tapping channel mainly includes a permanent layer and a working layer. The working layer is in direct contact with slag and molten iron. The permanent layer is the base of the tapping channel and is located at the lower part of the working layer, which plays the role of heat insulation and heat preservation. The permanent layer of the existing tapping trough consists of steel shell, thermal insulation paint layer, clay bricks and high alumina silicon carbide b...
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Login to View More IPC IPC(8): C21B7/14
CPCC21B7/14Y02P10/20
Inventor 王超
Owner MCC BAOSTEEL TECH SERVICE