Integrated secondary smoke box for converter stokehole

Abstract

The invention provides an integrated secondary smoke box for a converter stokehole. A baffle is arranged between two lug plates at the inner side of a main smoke box body and is fixed at the lower end of the main smoke box body through a bolt, and the lower end of the baffle is connected with a hanging chain through a hanging plate; a lifting hanging plate is arranged at the upper part of the body; the body is internally lined with a heat insulating fiberboard. The secondary smoke box structure is simplified, so that the total weight of the secondary smoke box is reduced by 1.2 tons; a reinforcement method is changed to create safe and convenient conditions for installation, maintenance and replacement; a lining material is replaced to prevent a heat insulating material from falling off and reduce the degree of burning of steel plates, and thus the service life of the smoke box is prolonged while the maintenance cost is saved; the flexible connection is adopted to eliminate the threat of smoke box vibration to hanging points, so that the installation time of the secondary smoke box is shortened from 24 hours to 3 hours; the smoke box is replaced once after four furnace lives instead of one furnace life.

Description

technical field [0001] The invention belongs to the field of steelmaking equipment, in particular to an integrated secondary smoke box used in front of a converter. Background technique [0002] The secondary smoke box in front of the converter is divided into two parts, the main smoke box and the smoke baffle. The installation is also divided into two parts. After the main smoke box is installed in place, the smoke baffle is hoisted. The main smoke box is a symmetrical bridge structure on both sides, which is fixed on the frame beam of the factory building through channel steel. The inside of the main smoke box is filled with gunning cotton, and ear plates are welded on both sides. The purpose of dividing the secondary smoke box into two parts is to facilitate the replacement of the smoke baffle after burning and the repair of the main smoke box. However, due to its structural characteristics, there are also many defects: one is splicing The structural parts are scattered...

AI Technical Summary

Problems solved by technology

The purpose of dividing the secondary smoke box into two parts is to facilitate the replacement of the smoke baffle after burning and the repair of the main smoke box. However, due to its structural characteristics, there are also many defects: one is splicing The structural parts are scattered, the installation, maintenance, and replacement work environment is very complicated, there are many unsafe factors during operation, and it takes up a lot of space

The second is that the heat-insulating gunning cotton filled inside the main smoke box is easy to fall off under high temperature, resulting in the burning of the steel plate of the main body

Third, the ear plates on both sides are fixed by welding, which is easy to deform and inconvenient to install

Fourth, the main smoke box is rigidly connected to the frame beam of the factory building. When the main smoke box vibrates, it is easy to open welding, which poses a safety hazard

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