A furnace top cooling wall for a recycled lead smelting furnace
By designing the serpentine tube cooling wall and dovetail sorpent brick structure on the furnace roof of the regenerated lead smelting furnace, the problem of burning and long replacement time of the furnace roof refractory brick is solved, and more efficient cooling and longer service life are achieved.
Patent Information
- Application Number
- CN202421297649.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-07
AI Technical Summary
During the production process of the existing recycled lead smelting furnace, the refractory bricks are easily burned and damaged by liquid slag and corrosive gases. The refractory bricks are replaced with a long time to replace the refractory bricks on the arched furnace.
A furnace top cooling wall is designed, including the furnace top cooling wall body, the furnace top feeding port, the furnace top fixing bolt, the furnace top brick dovetail groove, the furnace top cooling wall serpentine tube, the furnace top water inlet and the furnace top water outlet. The cooling wall is embedded with a serpentine tube, which leads heat to the cooling water and inlaid dovetail sorgia on the refractory bricks to enhance fixity.
Through the cooling design of the serpentine tube, the slag protective layer is quickly formed, the slag hanging ability of the cooling wall is enhanced, the high-temperature hot flow directly reaches the furnace shell, extend the service life of the smelting furnace, and simplify the process of replacing the refractory bricks.
Smart Images
Figure CN222703820U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of secondary lead smelting, in particular to a furnace top cooling wall of a secondary lead smelting furnace. Background Art
[0002] The roof of the secondary lead smelting furnace generally adopts an arched roof, which is often built with wedge-shaped bricks. The material of the wedge-shaped bricks is generally selected from refractory materials such as magnesium chromium, magnesium aluminum chromium, etc. In a high-temperature environment, the roof structure and materials are required to have good thermal stability, thermal shock resistance and corrosion resistance. During the smelting process, due to the different heating methods and heating points in the furnace, it needs to withstand a high temperature and high pressure environment. Under such harsh working conditions, the furnace roof is eroded and corroded by high-temperature airflow, causing the arched furnace roof to deform locally due to the difference in thermal expansion, collapse due to uneven force, and the refractory bricks are easily burned, shortening the service life of the refractory materials on the furnace roof and increasing the frequency of furnace repairs. To replace the refractory bricks of the arched furnace roof, the entire arched furnace roof needs to be dismantled and replaced, and the maintenance and replacement time is long, affecting normal production. Utility Model Content
[0003] The utility model aims to provide a roof cooling wall of a secondary lead smelting furnace, so as to solve the problems that the roof of the existing secondary lead smelting furnace is washed and eroded by liquid slag and corrosive gas during the production process, the refractory bricks are easily burned, and the replacement of the arched roof refractory bricks takes a long time.
[0004] The purpose of the utility model is achieved as follows: a furnace top cooling stave comprises: a furnace top cooling stave body, a furnace top charging port, a furnace top fixing bolt, a furnace top brick dovetail groove, a furnace top cooling stave serpentine pipe, a furnace top water inlet and a furnace top water outlet; a fixing hole is provided on the furnace top cooling stave body, and the fixing hole is used to fix the furnace top cooling stave body on the furnace shell through the furnace top fixing bolt; there are two furnace top cooling stave serpentine pipes, which are embedded in the furnace top cooling stave body side by side, and a furnace wall water inlet and a furnace wall water outlet are respectively provided at both ends of the furnace top cooling stave serpentine pipe to lead out of the furnace top cooling stave body; a furnace top brick dovetail groove is provided on the back of the furnace top cooling stave body.
[0005] The furnace top refractory bricks are inlaid on the furnace top brick dovetail grooves; one end of the furnace top refractory bricks is provided with dovetail tenons, and the dovetail tenons match the furnace top brick dovetail grooves.
[0006] The furnace roof cooling wall body has circular and fan-shaped shapes, and the fan-shaped shape is a circular ring formed by multiple pieces spliced together; the spliced circular ring is connected to the circular outer ring; refractory mud is pressed into the gap between adjacent fan-shaped furnace roof cooling wall bodies and between the circular furnace roof cooling wall body formed by multiple fan-shaped pieces and the circular furnace roof cooling wall body to form a complete dome furnace roof.
[0007] The two furnace top cooling wall serpentine tubes are on the circular furnace top cooling wall body, starting from a point on the edge of the circular furnace top cooling wall body, and continuously and repeatedly bending horizontally to another point on the edge to terminate. The two furnace top cooling wall serpentine tubes 3-5 are arranged in a staggered manner vertically and horizontally.
[0008] The two furnace top cooling wall serpentine tubes are arranged on the fan-shaped furnace top cooling wall body, one of which starts from one end of the fan-shaped surface and continuously and repeatedly bends horizontally to terminate at another point of the fan-shaped surface, and the other starts from one end of the fan-shaped surface and continuously and repeatedly bends longitudinally to terminate at another point of the fan-shaped surface.
[0009] A furnace top charging port is arranged on the fan-shaped furnace top cooling stave body. When the furnace top cooling stave serpentine pipe arranged on the fan-shaped furnace top cooling stave body encounters the furnace top charging port, it is arranged around the furnace top charging port.
[0010] The furnace top charging port is equipped with furnace top charging port refractory bricks.
[0011] The cooling wall body is made of cast iron or cast steel cooling wall, which is in a circular and fan-shaped block structure, and the internal cooling water pipe is designed as a serpentine pipe, and adopts high-quality cold-drawn seamless steel pipe.
[0012] Beneficial effect: Due to the adoption of the above scheme, the serpentine tube adopts a double-layer vertical and horizontal cross arrangement, two inlets and two outlets, and has a large cooling capacity. The heat transferred from the furnace is smoothly discharged through the serpentine tube water cooling, and a slag skin protective layer is quickly formed on the cooling wall. The cooling wall has a strong slag hanging ability and good performance, which prevents high-temperature heat flow from directly reaching the furnace shell, prolongs the service life of the smelting furnace, and thus forms a stable and safe working state.
[0013] The utility model solves the problem that the roof of the existing secondary lead smelting furnace is washed and eroded by liquid slag and corrosive gas during the production process, the refractory bricks are easily burned, and the replacement of the arched roof refractory bricks takes a long time, thereby achieving the purpose of the utility model.
[0014] Advantages: simple structure, low cost, high strength. It is convenient to replace the refractory bricks of the arched furnace roof, which greatly shortens the replacement time. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a cross-sectional structural schematic diagram of the utility model.
[0016] Figure 2 The utility model is a schematic diagram of the transverse arrangement structure of the serpentine tubes in the fan-shaped furnace top cooling wall.
[0017] Figure 3 The utility model is a schematic diagram of the vertical arrangement structure of the serpentine tubes in the fan-shaped furnace top cooling wall.
[0018] Figure 4It is a schematic cross-sectional view of embodiment 2 of the present utility model.
[0019] In the figure, 1. furnace roof cooling wall body; 2. furnace roof charging port; 3. furnace roof fixing bolts; 4. furnace roof inlay brick dovetail groove; 5. furnace roof cooling wall serpentine pipe; 6. furnace roof water inlet; 7. furnace roof water outlet; 8. furnace roof refractory bricks; 9. furnace roof charging port refractory bricks. DETAILED DESCRIPTION
[0020] Embodiment 1: The furnace top cooling stave comprises: a furnace top cooling stave body 1, a furnace top charging port 2, a furnace top fixing bolt 3, a furnace top brick dovetail groove 4, a furnace top cooling stave serpentine pipe 5, a furnace top water inlet 6 and a furnace top water outlet 7; a fixing hole is provided on the furnace top cooling stave body 1, and the fixing hole is used to fix the furnace top cooling stave body 1 on the furnace shell through the furnace top fixing bolt 3; there are two furnace top cooling stave serpentine pipes 5, which are embedded in the furnace top cooling stave body 1 side by side, and a furnace wall water inlet 6 and a furnace wall water outlet 7 are respectively provided at both ends of the furnace top cooling stave serpentine pipe 5 to lead out of the furnace top cooling stave body 1; a furnace top brick dovetail groove 4 is provided on the back of the furnace top cooling stave body 1.
[0021] A furnace roof refractory brick 8 is inlaid on the furnace roof brick dovetail groove 4; one end of the furnace roof refractory brick 8 is provided with a dovetail tenon, and the dovetail tenon matches the furnace roof brick dovetail groove 4.
[0022] The furnace roof cooling wall body 1 has a circular shape and a fan shape, and the fan shape is a plurality of pieces spliced into a circular ring; the spliced circular ring is connected to the circular outer ring; refractory mud is pressed into the gap between the adjacent fan-shaped furnace roof cooling wall bodies 1, and between the circular furnace roof cooling wall body 1 spliced into a plurality of fan-shaped pieces and the circular furnace roof cooling wall body 1, so as to form a complete dome furnace roof.
[0023] The two furnace top cooling wall serpentine tubes 5 are on the circular furnace top cooling wall body 1, starting from a point on the edge of the circular furnace top cooling wall body 1, and continuously and repeatedly bending horizontally to another point on the edge to terminate. The two furnace top cooling wall serpentine tubes 3-5 are arranged in a staggered manner vertically and horizontally.
[0024] The two furnace top cooling wall serpentine tubes 5 are on the fan-shaped furnace top cooling wall body 1, one of which starts from one end of the fan-shaped surface and continuously and repeatedly bends horizontally to terminate at another point of the fan-shaped surface, and the other starts from one end of the fan-shaped surface and continuously and repeatedly bends longitudinally to terminate at another point of the fan-shaped surface.
[0025] A furnace top charging port 2 is arranged on the fan-shaped furnace top cooling stave body 1. When the furnace top cooling stave serpentine pipe 5 arranged on the fan-shaped furnace top cooling stave body 1 encounters the furnace top charging port 2, it is arranged around the furnace top charging port 2.
[0026] The fan-shaped furnace roof cooling wall body 1 with a furnace top charging port 2 is configured according to the required number, that is, the number of fan-shaped furnace roof cooling wall bodies 1 with a furnace top charging port 2 is generally 1-6, and the fan-shaped furnace roof cooling wall body 1 without a furnace top charging port 2 is configured to complete multiple fan-shaped splicing into a circular ring.
[0027] The cooling wall body is made of cast iron or cast steel cooling wall, which is in a circular and fan-shaped block structure, and the internal cooling water pipe is designed as a serpentine pipe, and adopts high-quality cold-drawn seamless steel pipe.
[0028] Embodiment 2: Figure 4 In the embodiment, a furnace roof refractory brick 8 is inlaid on a dovetail groove 4 of the furnace roof inlaid brick; one end of the furnace roof refractory brick 8 has a dovetail tenon, and the dovetail tenon matches the dovetail groove 4 of the furnace roof inlaid brick.
[0029] Furnace top charging port refractory bricks 3-9 are installed in the furnace top charging port 2.
Claims
1. A roof cooling stave of a secondary lead smelting furnace, characterized in that: The furnace top cooling stave comprises: a furnace top cooling stave body, a furnace top charging port, a furnace top fixing bolt, a furnace top brick dovetail groove, a furnace top cooling stave serpentine pipe, a furnace top water inlet and a furnace top water outlet; a fixing hole is provided on the furnace top cooling stave body, and the fixing hole is used to fix the furnace top cooling stave body to the furnace shell through the furnace top fixing bolt; there are two furnace top cooling stave serpentine pipes, which are embedded in the furnace top cooling stave body side by side, and a furnace wall water inlet and a furnace wall water outlet are respectively provided at both ends of the furnace top cooling stave serpentine pipe to lead out of the furnace top cooling stave body; a furnace top brick dovetail groove is provided on the back of the furnace top cooling stave body.
2. The top cooling stave of a secondary lead smelting furnace according to claim 1, characterized in that: The furnace roof cooling wall body has circular and fan-shaped shapes, and the fan-shaped shape is a circular ring formed by multiple pieces spliced together; the spliced circular ring is connected to the circular outer ring; refractory mud is pressed into the gap between adjacent fan-shaped furnace roof cooling wall bodies and between the circular furnace roof cooling wall body formed by multiple fan-shaped pieces and the circular furnace roof cooling wall body to form a complete dome furnace roof.
3. The top cooling stave of a secondary lead smelting furnace according to claim 1, characterized in that: The two furnace top cooling wall serpentine tubes are on the circular furnace top cooling wall body, starting from one point on the edge of the circular furnace top cooling wall body, and continuously and repeatedly bending horizontally to another point on the edge, and the two furnace top cooling wall serpentine tubes are arranged in a staggered manner vertically and horizontally.
4. The top cooling stave of a secondary lead smelting furnace according to claim 1, characterized in that: The two furnace top cooling wall serpentine tubes are arranged on the fan-shaped furnace top cooling wall body, one of which starts from one end of the fan-shaped surface and continuously and repeatedly bends horizontally to terminate at another point of the fan-shaped surface, and the other starts from one end of the fan-shaped surface and continuously and repeatedly bends longitudinally to terminate at another point of the fan-shaped surface.
5. The top cooling stave of a secondary lead smelting furnace according to claim 2, characterized in that: A furnace top charging port is arranged on the fan-shaped furnace top cooling stave body. When the furnace top cooling stave serpentine pipe arranged on the fan-shaped furnace top cooling stave body encounters the furnace top charging port, it is arranged around the furnace top charging port.