Method for correcting and resetting blast furnace body

Abstract

The invention discloses a method for correcting and resetting blast furnace body, which can obviously shorten the construction period; the method mainly comprises: A, dividing the blast furnace above the furnace base into a furnace bottom and an upper furnace body, then lifting the upper furnace body and fixing; B, removing the furnace bottom on the furnace base; C, determining a theoretical center point of the furnace bottom on the furnace base and the theoretical elevation of the furnace bottom; D, according to the theoretical center point of the furnace bottom and the theoretical elevationof the furnace bottom, installing a new furnace bottom on the furnace base; E, determining the offset distance between the orthographic projection of the top center of the upper furnace body on the furnace base and the theoretical center point of the furnace bottom on the furnace base; F, adjusting the upper furnace body so that the axial direction of the upper furnace is parallel to the new furnace bottom; the offset distance is reduced to less than or equal to H/1000; wherein H is the height of the furnace, and the dislocation degree between the outer wall of the upper furnace body and the outer wall of the new furnace bottom can satisfy the installing requirement of the blast furnace; G, connecting the upper furnace body with the new furnace bottom on the furnace base.

Description

technical field [0001] The invention relates to a deflection correction and reset method for a blast furnace body applied in the blast furnace overhaul process. Background technique [0002] In the prior art, after the blast furnace has been used for a period of time, the furnace body of the blast furnace rises and tilts due to damage to the furnace bottom, which will affect the normal operation of the blast furnace. At this time, it is necessary to correct and reset the blast furnace. The entire blast furnace body is replaced, and the replacement methods include in-situ sporadic installation after the furnace body is dismantled, integral push type, and off-site reconstruction type. The integral push type is to remove the old furnace body first, and then transport the new furnace body to the furnace foundation of the original furnace body by means of translation. For example, Chinese patent 98125169.2 discloses a blast furnace overhaul and refurbishment push technology and d...

AI Technical Summary

Problems solved by technology

The above three methods have the following disadvantages: 1. The construction period is long; 2. The engineering volume is large; 3. The process is complicated; 4. The cost is high

[0003] In addition, Chinese patent 200780018134.4 discloses a method for dismantling the bottom of a blast furnace. This patent document only discloses a method for dismantling the bottom of a blast furnace during the overhaul of the blast furnace. The technical problem to be solved is how to quickly remove the bottom of the blast furnace. Give specific measures or technical inspirations to solve the problem of rising or tilting of the blast furnace body

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