SU394641A1 - STEEL MOLDING OVEN - Google Patents

Description

one

The invention relates to the field of ferrous metallurgy, namely the design of open-hearth steel-smelting furnaces.

A known steelmaking furnace is a furnace containing iodine, walls, roof, heads, gas ducts, slag and heat exchangers in the form of chambers with regenerative nozzles. Under the conditions of operation of the furnace with intensive purging of metal with oxygen, the nozzles of the regenerator are quickly brought in by melting dust. This worsens the air flow and heat. Changing the nozzles of regenerators is very time consuming and can only be done when the furnace is stopped for cold repairs.

The purpose of the present invention is to improve the operating conditions of the pump and increase the repair time of the smoke exhaust and air supply paths.

To do this, in the proposed bottom steelmaking furnace, heat exchange chambers are made of divided vertical walls into sections, the cross section of each of which is 0.08-0.12 of the cross section of the chamber, and fuel burners are installed in the chamber arch along the axis of each section. water nozzles.

FIG. 1 shows the proposed furnace, a general view; in fig. 2 is a schematic diagram of a heat exchanger chamber.

The steelmaking hearth of the furnace consists of a bath 1, a front 2 and a back 3 walls, a roof 4, HEAD 5, slag cubes 6, a chimney tract 7, a fan 8, chambers 9 for heating air.

The heat exchange chamber consists of a refractory lining 10, separation walls 11, sections 12. Burners 13 for fuel supply and water injectors 14 are installed in the chamber arch.

The furnace works as follows. The air required for burning the fuel in the working area of the furnace is injected

into the furnace with the help of the fan 8. When the chamber 9 passes through the air stream, the fuel supplied by the burners 13 is burned, after which the heated air passes through j, HT through the slag chamber 6 and the head 5 and goes to the combustion chamber in the furnace working space directly above Bathroom 1. Then, having passed through the furnace working space, waste products of the combustion through the head and slag cubicles located on the opposite side of the furnace enter the chamber and the smoke duct and are sucked out by an exhaust fan or chimney to the atmosphere.

Before the smoke enters the chamber, water is injected with the help of fine spray nozzles. This contributes to lowering the temperature of the smoke and the partial precipitation of melting dust. ; After reversing, the whole process is repeated, but in opposite directions to naplepine. Subject of the invention The steelmaking hearth furnace, containing Chyu, Inu, walls, roof, heads, gas ducts, slates and heat exchange chambers, distinguishes 394 5 10 41 so that, in order to improve the operating conditions of the furnace and increase the repair time between services The heat exchanging chambers are made by divided vertical walls into sections, the cross-sectional area of each of which is 0.08-0.12 Å1, and one section of the chamber, and fuel axes are installed in the chamber arch and on the axis of each section. Christmas trees and water jets.