TH78751A - Metal smelting furnace - Google Patents

Abstract

DC60 (05/04/56) The invention relates to the structure of the lower area of a blast furnace (1) which is composed of the lower section (2) and the wall (3), both of which include the steel structures (6, 21) which make up the outer surface and the inner refractory brick lining (12), the lower section (2) and the wall (3) which are connected to each other, characterized by the wall (3) of the furnace (1) being divided into a lower section (4) and an upper section (30), where the steel structure (21) of the lower section (4) is a separate ring composed of sections (23), joints (19) arranged between sections (23) and arranged to extend outwards. The invention also deals with a method for controlling the expansion of the furnace (1). The invention deals with the structure of the lower region of a blast furnace (1) which is composed of a bottom section (2) and a wall (3). Both components are combined with a steel structure (6,21) which forms the outer surface and the inner refractory brick lining (12), the bottom section (2) and the wall (3) which are connected to each other. It is characterized by the wall (3) of the furnace (1) being divided into a lower section (4) and an upper section (30), in which the steel structure (21) of the bottom section (4) is a separate ring composed of sections (23), joints (19) arranged between sections (23) and positioned to expand. The invention also deals with a method for controlling the expansion of the furnace (1).

Claims (9)

1. The structure of the lower part of the metal smelting furnace (1) that consists of the lower part (2) and the wall (3), both of which are composed of a primary steel structure (6,21) that will be External surface And the internal fire-resistant brick lining (12), the bottom (2) and the wall (3) that are connected to each other. Characterized by the walls (3) of the furnace (1) will be divided into the bottom (4) and the top. Where the steel structure (21) of the bottom section (4) is a separate ring consisting of section (23), joint (19) arranged between section (23) and an enlarged place. out And provided that the sled joint (20) is provided between the bottom (4) of the wall (3) and the top (30) of the wall (3). 2. Structure according to claim 1 Characteristically that the joints (19) of section (23) are malleable joints such as friction joints, spring joints, or similar. 3. The structure according to claim 2, which is characterized by a flexible joint, that is, a friction joint or a spring joint. 4. The structure, according to claim 1, is characterized by that the cooling element (22) will be provided between the bottom (4) of the wall (3) and the brick lining. Internal fire resistance For at least part of the way 5. Any claim structure of Clause 1 to Clause 4 that is unique are: There is an artificial bottom (13) provided under the bottom (2) of the furnace (1) that forms a channel system (14) between the artificial bottom (13) and the steel structure (7). ) Of the bottom part (2) 6. The structure (1) according to claim 5 is characterized by at least one dryer. It will be connected to the channel system (14). 7. The unique method for controlling the expansion of the blast furnace (1) is the side The bottom of the loop (4) of the wall (3) will be marked as part (23) in the direction. The circumference of the furnace (1) and the recoil bottom section (4) are allowed to expand by means of joints (19) between sections (23) when the furnace (1) is heated. And where the recirculation bottom (4) of the wall (3), which joins the bottom (2) of the furnace (1), is connected to the cylindrical top (30). ) Of the wall (3) of the furnace (1) by the sliding joint (20), when the channel system (14) is formed between the bottom (2) of the furnace (1) and the Below the harness (13) the air that is blown into the cavity system by the ejector at least One for temperature control of the brick lining (12) of the bottom (2). 8. A unique approach to claim 7 is that the inner temperature of the inner brick layer (8) of the bottom (2) of the furnace (1) has been mitigated through cooling. until Temperature one Where particles of solid molten matter at low temperatures settle within the innermost brick layer (8) of the bottom (2). 9. A unique method of claim 8 is that the temperature inside the innermost brick layer (8) of the bottom (2) of the furnace (1) has been mitigated by means of cooling. Up to about 650 ° C to 800 ° C depending on the material of molten material