Novel prefabricated iron tap channel and preparation method thereof

Abstract

The invention discloses a prefabricated iron tap channel. The novel prefabricated iron tap channel comprises an outer steel shell, a permanent layer and a working layer, wherein the permanent layer and the working layer are arranged in the outer steel shell, the permanent layer comprises a permanent pouring layer, a prefabricated base and prefabricated side plates, the working layer is arranged ina space defined by the permanent pouring layer, the prefabricated base and the prefabricated side plates, and the prefabricated side plates are fixedly connected with the prefabricated base in an inserted mode; arc-shaped protrusions are arranged at the lower ends of the prefabricated side plates, and arc-shaped grooves matched with the arc-shaped protrusions are formed in the prefabricated base.The invention further discloses a preparation method of the novel prefabricated iron tap channel. The preparation method is simple in process. The prepared novel prefabricated iron tap channel blocksmelts penetrating the working layer effectively, so that the safety risk is reduced greatly. The novel prefabricated iron tap channel is convenient to replace and short in time. Normal switching useof the iron tap channel is not affected completely in a maintenance repair process.

Description

technical field [0001] The invention belongs to the technical field of ironmaking, and in particular relates to a novel prefabricated iron trough and a preparation method thereof. Background technique [0002] At present, domestic large blast furnaces all adopt the iron storage type main tapping channel (hereinafter referred to as the main tapping channel). The role of slag. In actual production, the main reasons for the damage of the main ditch are: (1) severe erosion and erosion of flowing high-temperature molten iron and slag; (2) chemical erosion of liquid slag iron in blast furnace; (3) thermal shock damage of intermittent tapping. Among them, the erosion of high temperature molten iron and slag is the most important factor for the damage of the main trench. In actual production, the wall of the main ditch will gradually melt and become thinner with the increase of the amount of iron passing and the use time. When the thinnest part is less than the specified value, th...

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Problems solved by technology

However, the above problems have not been completely solved:

[0005] (1) After the bottom of the prefabricated side plate is embedded in the installation groove, the structure of the installation groove is an inverted trapezoid and the gap between the top of the prefabricated side plate and the steel shell is small, so it is difficult to replace;

[0006] (2) Since the top of the prefabricated veneer is designed as a "Z"-shaped structure, it is impossible to replace a certain part of the prefabricated side panel during the process of disassembly or replacement. All prefabricated veneers need to be disassembled and replaced, which increases the difficulty of construction and time;

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