Blast furnace tapping channel operation and maintenance method and tapping channel

Abstract

The invention provides a blast furnace tapping channel operation and maintenance method and a tapping channel. The blast furnace tapping channel operation and maintenance method comprises the following steps that the single-time limit iron passing amount tn of the tapping channel is determined, wherein n is a natural number larger than or equal to 1; when detecting that the single-time actual iron passing amount is larger than or equal to the single-time limit iron passing amount tn, that the nth time of residual iron discharging detection is conducted on the tapping channel is determined; and the operation and maintenance manner of the tapping channel is determined according to the result obtained through the nth time of residual iron discharging detection. According to the technical scheme, the accuracy of the residual iron discharging detection opportunity is improved by setting the single-time limit iron passing amount tn, then the tapping channel is subjected to repairing, disassembling and rebuilding and the operation and maintenance manner of mutual combination according to the result of the nth time of residual iron discharging detection, tapping channel refractory materials are effectively and fully utilized through more detailed operation and maintenance manner division, the refractory material loss is reduced, and the service life of the tapping channel is prolonged.

Description

technical field [0001] The application relates to the field of metallurgical ironmaking technology and equipment, in particular, to a blast furnace tapping trough operation and maintenance method and the tapping trough. Background technique [0002] The blast furnace tapping channel is an essential channel for blast furnace iron tapping. As an important facility in the ironmaking production process, ensuring the safety and reliability of the tapping channel system is a prerequisite for ensuring the normal smelting of the blast furnace. There are many uncertain factors in the use of blast furnace tapping trough. The refractory construction of the tapping trough system is mainly based on the actual condition of slag and iron. , Each tapping channel system needs to be repaired and maintained in turn. [0003] In the tap trough system, compared with the molten iron below, the slag has a smaller specific gravity and a higher temperature, and the refractory material near the liqu...

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Problems solved by technology

[0004] In the prior art, when the side wall of the tapping trough has a large melting loss, the refractory material of the tapping trough is generally dismantled and overhauled, resulting in the thickness of the excess refractory material at the lower part of the side wall iron line and the bottom of the tapping trough body cannot be It is effectively used, resulting in waste of refractory materials, increasing the amount of maintenance and repairs, and shortening the amount of iron passing through the tapping channel and its service life

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