Furnace top structure of suspension converting furnace

Abstract

The utility model discloses a furnace top structure of a suspension converting furnace, and belongs to the field of non-ferrous metal metallurgy. The suspension converting furnace comprises a furnace bottom and a furnace top, a molten pool is formed between the furnace bottom and the furnace top, a vault is arranged in the middle of the furnace top, a reaction tower is arranged on the furnace top on one side of the vault, an uptake flue is arranged on the furnace top on the other side of the vault, a feeding port is formed in the top of the reaction tower, and a smoke outlet is formed in the top of the side wall of the uptake flue. The furnace top area outside the reaction tower, the uptake flue and the vault and the tower top area outside the feed inlet of the reaction tower are all of an integrated furnace top structure composed of copper water jackets and castable. According to the furnace top of the suspension converting furnace, the adaptability to high-temperature acid gas, the high-temperature scouring resistance and the acid erosion resistance are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the field of nonferrous metal smelting, and in particular relates to a top structure of a suspension converting furnace. Background Art

[0002] The suspension converting furnace at the Henan Zhongyuan Gold Smelter began operation in August 2015. The original design for the furnace roof featured a copper water jacket and dovetail bricks to prevent erosion and escape of high-temperature, acidic flue gases. However, the dovetail bricks, made of magnesia-chromium, were difficult to perfectly fit within the copper water jacket during the masonry process, resulting in reduced heat transfer efficiency. Furthermore, they were easily eroded by the presence of high-temperature, acidic flue gases. This copper water jacket and dovetail brick roof structure typically began to erode and fall off after one month of normal production. After three months, nearly all the dovetail bricks had fallen off, exposing the copper water jacket to direct erosion and erosion from the high-temperature, acidic flue gases. This significantly reduced the service life of the copper water jacket and posed a serious safety hazard to the suspension converting furnace.

[0003] Therefore, it is a problem worthy of study to provide a furnace roof structure that is safe, reliable, quick and easy to replace and can withstand long-term erosion by high-temperature acidic flue gas. Utility Model Content

[0004] In order to overcome the defects of the prior art, the utility model provides a suspension converting furnace top structure.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A suspension converting furnace roof structure comprises a furnace bottom and a furnace top, a molten pool is formed between the furnace bottom and the furnace top, a vault is provided in the middle of the furnace roof, a reaction tower is provided on the furnace roof on one side of the vault, an ascending flue is provided on the furnace roof on the other side of the vault, a feed port is provided at the top of the reaction tower, a smoke outlet is provided at the top of the side wall of the ascending flue, and the furnace top area outside the reaction tower, the ascending flue and the vault, as well as the tower top area outside the reaction tower feed port, all adopt an integrated furnace roof structure consisting of a copper water jacket and castables.

[0007] Furthermore, the integrated furnace roof structure composed of the copper water jacket and the castable includes a copper water jacket and the castable, a plurality of cooling pipes are provided in the copper water jacket, the cold surface of the copper water jacket is provided with pipe joints connected to the cooling pipes, and the hot surface of the copper water jacket is provided with a groove for embedding the castable, the height of the castable is greater than the depth of the groove, and the part of the castable not embedded in the groove forms the inner wall of the furnace roof structure.

[0008] Furthermore, a grid-shaped steel mesh is embedded in the castable outside the groove, and the grid-shaped steel mesh is fixed on the hot surface of the copper water jacket.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] (1) The adaptability of the suspension converting furnace roof to high-temperature acidic gases has been improved, and its resistance to high-temperature erosion and acid corrosion has been greatly improved. This solves the problem of the copper water jacket on the top of the suspension converting furnace of the Zhongyuan Gold Smelter being easily corroded and leaked due to the short service life of the dovetail bricks. This eliminates a weak point in the safety of the suspension converting furnace body and improves the safety of the suspension converting furnace body, which is of great significance to the smelting industry.

[0011] (2) By directly pouring the castable on the surface of the copper water jacket, the castable and the water jacket surface are in 100% contact, avoiding the gap between the hanging dovetail bricks and the water jacket surface, achieving better heat transfer effect and better protection for the castable.

[0012] (3) The water jacket and castable material are integrated and can be prefabricated in advance, which can save the time of traditional dovetail brick laying during installation and replacement, thereby improving work efficiency.

[0013] (4) The water jacket and castable form a whole. If the water jacket on the furnace top needs to be replaced later, the operation will be more operable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of a suspension converting furnace;

[0015] Figure 2 yes Figure 1 A top view of

[0016] Figure 3 This is a structural diagram of the furnace top;

[0017] Figure 4 yes Figure 3 A top view of

[0018] Figure 5 yes Figure 3 Side view of;

[0019] In the figure: 1. Furnace bottom; 2. Molten pool; 3. Furnace top; 4. Reaction tower; 41. Reaction tower top; 5. Dome; 6. Ascending flue; 7. Feed inlet; 8. Smoke outlet; 9. Copper water jacket; 91. Cooling pipe; 92. Groove; 10. Pipe joint; 11. Castable material; 12. Grid-like steel mesh. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] A suspension converting furnace top structure, referring to Figures 1 to 5 The suspension converting furnace includes a furnace bottom 1 and a furnace top 3, a molten pool 2 is formed between the furnace bottom 1 and the furnace top 3, a dome 5 is provided in the middle of the furnace top 3, a reaction tower 4 is provided on the furnace top on the left side of the dome 5, an ascending flue 6 is provided on the furnace top on the right side of the dome 5, a feed port 7 is provided at the top 41 of the reaction tower 4, and a smoke outlet 8 is provided at the top of the side wall of the ascending flue 6. The region of the furnace top 3 other than the reaction tower 4, the ascending flue 6 and the dome 5, and the region of the tower top 41 other than the reaction tower feed port 7 all adopt an integrated furnace top structure consisting of a copper water jacket 9 and a castable 11.

[0022] Among them, the integrated furnace roof structure composed of the copper water jacket 9 and the castable 11 includes a copper water jacket 9 and a castable 11. Several cooling pipes 91 are provided in the copper water jacket 9. The cold surface of the copper water jacket 9 is provided with a pipe joint 10 connected to the cooling pipe 91. The hot surface of the copper water jacket 9 is provided with a groove 92 for embedding the castable 11. The height of the castable 11 is greater than the depth of the groove 92. The part of the castable 11 not embedded in the groove 92 forms the inner wall of the furnace roof structure, and the height H of this part is 10 cm.

[0023] A mesh-like steel mesh 12 is embedded in the casting material 11 outside the groove 92 , and the mesh-like steel mesh 12 is fixed on the hot surface of the copper water jacket 9 .

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A suspension converting furnace roof structure, comprising a furnace bottom and a furnace roof, a molten pool formed between the furnace bottom and the furnace roof, a dome provided in the middle of the furnace roof, a reaction tower provided on one side of the dome, an ascending flue provided on the other side of the dome, a feed inlet provided at the top of the reaction tower, and a smoke outlet provided at the top of the side wall of the ascending flue, characterized in that: The furnace top area outside the reaction tower, ascending flue and arch, as well as the tower top area outside the reaction tower feed port, all adopt an integrated furnace top structure consisting of a copper water jacket and castables.

2. The suspension converting furnace roof structure according to claim 1, characterized in that: The integrated furnace roof structure composed of the copper water jacket and the castable includes the copper water jacket and the castable, wherein a plurality of cooling pipes are arranged in the copper water jacket, a cold surface of the copper water jacket is provided with pipe joints connected to the cooling pipes, and a hot surface of the copper water jacket is provided with a groove for embedding the castable, wherein the height of the castable is greater than the depth of the groove, and the portion of the castable not embedded in the groove forms the inner wall of the furnace roof structure.

3. The suspension converting furnace roof structure according to claim 2, characterized in that: A grid-shaped steel mesh is embedded in the castable outside the groove, and the grid-shaped steel mesh is fixed on the hot surface of the copper water jacket.

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