Online overhaul and refractory material transportation system for independent hot blast furnace and overhaul method

Abstract

The invention discloses an online overhaul and refractory material transportation system for an independent hot blast furnace. The online overhaul and refractory material transportation system comprises a furnace external transportation device located outside the hot blast furnace and a furnace internal hoisting device located inside the hot blast furnace; the furnace external transportation device mainly comprises a one-layer construction plane, construction platforms, an auxiliary vertical transportation mechanism and a vertical transportation mechanism; the construction platforms are built at the outer side of a construction hole of the hot blast furnace; a turnover platform is built below the construction platform at the bottom layer; the auxiliary vertical transportation mechanism is mounted above the turnover platform and is used for hoisting and transporting a refractory material on the one-layer construction plane to the turnover platform; and the vertical transportation mechanism is mounted at the outer sides of the construction platforms, the bottom of the vertical transportation mechanism is erected above a cold blast elbow pipe of the hot blast furnace, and an outlet/inlet at the lower part of the vertical transportation mechanism is located at the turnover platform. The invention also discloses an online overhaul method for an independent hot blast furnace. The online overhaul and refractory material transportation system has the beneficial effects that the furnace external transportation device is kept away from pipeline equipment at the lower part of the hot blast furnace, and furnace internal overhaul can be realized without dismounting the equipment of the hot blast furnace, so that the overhaul cost is reduced, meanwhile, the construction progress can be accelerated, and the production efficiency is increased.

Description

technical field [0001] The invention relates to the technical field of furnace and kiln construction, in particular to an on-line repair refractory transport device and a repair method for an independent hot blast stove. Background technique [0002] The blast furnace is the main equipment for ironmaking, and the hot blast stove is one of the main auxiliary equipment of the blast furnace. It uses the heat of blast furnace gas combustion and the heat exchange effect of checker bricks to provide high-temperature hot air for the blast furnace. Therefore, each blast furnace is generally equipped with 3 to 4 hot blast stoves, so that combustion heating and air supply can be operated alternately. [0003] Due to the perennial production of hot blast stoves, some checker bricks are seriously broken, a large number of fragments fall, and the grid holes are blocked, which seriously affects the thermal efficiency of hot blast stoves. Therefore, regular renovation and maintenance of ch...

AI Technical Summary

Problems solved by technology

[0005] 1) The amount of demolition is large, and more than 10,000 tons of refractory materials have been removed;

[0006] 2) Because other hot blast stoves are still in production, the equipment and structure cannot be moved (for example, the hot blast pipe is located at the bottom of the hot blast stove), and the loading and unloading towers are difficult to get close to the hot blast stove, and material transportation is very difficult;

[0007] 3) The loading equipment cannot be close to the hot blast stove, and most of the demolition materials can only be transported manually;

[0008] 4) Since the hot blast stoves are overhauled one by one, and there are many interruptions, the duration is long, and the construction organization is difficult;

[0009] 5) There is a thermal insulation lining inside the shell of the hot blast stove, and the lining of the furnace roof is a spherical vault. Opening holes for the installation of monorail beams will cause the overall collapse of the spherical vault; installing monorail beams outside the furnace roof, electric hoist The range of movement can only be within the diameter of the hole facing the sky on the furnace roof, and the lifting range is limited

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