Water-cooled furnace lid for refined-smelting ladle furnace, and slag removal method of dust-proof flue of water-cooled furnace lid

Abstract

The invention discloses a water-cooled furnace lid for a refined-smelting ladle furnace, and a slag removal method of a dust-proof flue thereof. The water-cooled furnace lid comprises a dust-proof flue, wherein one end of the dust-proof flue is connected with the water-cooled furnace lid, and is communicated with a space in the refined-smelting ladle furnace, and the other end of the dust-proof flue is connected with a dust removal fan; and a flue gas regulator valve is arranged in the dust removal flue. The water-cooled furnace lid also comprises an opening arranged in the dust removal flue, and a movable cover plate arranged on the opening, wherein the opening can be sealed by the movable cover plate. Under the condition that the smooth production is carried out at processing working positions of the LF (Ladle Furnace), the accumulated slag in the dust removal flue of the water-cooled furnace lid can be cleaned simply and fast, and the time consumed by cleaning the accumulated slag is short.

Description

Technical field [0001] The invention relates to the technical field of out-of-furnace refining, and more specifically, to a water-cooled furnace cover of a ladle refining furnace that can be easily cleaned and a method for cleaning the dust removal flue of the water-cooled furnace cover. Background technique [0002] The ladle refining furnace (ie, LF (Ladle Furnace) furnace) is a refining equipment developed in Japan in the early 1970s. Because of its simple equipment, low investment cost, flexible operation and good refining effect, it has become a rising star in the metallurgical industry and has been widely used and developed all over the world. The steel grades handled by the LF furnace involve almost all steel grades from special steel to ordinary steel. Different process operating systems can be used in production according to the needs of quality control. Among various secondary refining equipment, LF furnace has a higher comprehensive cost performance. [0003] LF device...

AI Technical Summary

Problems solved by technology

[0007] In the prior art, when the slag accumulated in the dust removal flue of the water-cooled furnace cover is cleaned, the molten steel treatment in the LF process will be interrupted, resulting in fluctuations in the production organization of the preceding and following processes, which will have a great impact on the smooth flow of economic production

It takes a long time to clean the slag accumulation in the dust removal flue of the water-cooled furnace cover of the LF furnace each time. It takes a long time to resume production after the slag accumulation is cleaned. Each slag accumulation operation has a great impact on the production process. Currently, there is no special cost-effective technical solutions for

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