Striker plate for discharge port of fluidized bed furnace
By designing a stainless steel baffle plate for the discharge port of the boiling furnace, the problem of roasted sand leakage caused by scouring of refractory materials at the discharge port is solved, the control of roasted sand quantity, boiling layer height and pressure is achieved, and the operating efficiency and temperature stability of the equipment are improved.
Patent Information
- Application Number
- CN202422307128.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-09-20
AI Technical Summary
During the roasting process of zinc concentrate in a fluidized bed furnace, the refractory materials at the discharge port are washed away, causing the roasted sand to be easily discharged from the furnace, resulting in a decrease in the height and pressure of the boiling layer, affecting the quality of the roasted sand and the temperature stability in the furnace, and requiring frequent replacement of the baffle plate to stabilize production.
A baffle plate for the discharge port of a fluidized bed furnace is designed. A 12 mm thick stainless steel panel and a 10 mm thick stainless steel baffle are used, combined with a support frame and a column structure to form a 150 mm thick baked sand layer to seal the discharge port. The size of the discharge port can be adjusted by a movable fixed baffle.
Effectively control the amount of roasted sand, boiling layer height and furnace pressure, improve temperature stability, reduce deformation and leakage of baffle plates, and achieve stable production operation.
Smart Images
Figure CN223445607U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of fluidized bed furnace roasting zinc concentrate production technology, in particular to a kind of baffle for fluidized bed furnace discharge port. BACKGROUND
[0002] Fluidized bed furnace roasting zinc concentrate is the desulfurization link in traditional zinc smelting process, and the produced calcine is the raw material for zinc hydrometallurgy. The quality of fluidized bed furnace calcine has a great influence on acid balance and manganese ion balance in zinc hydrometallurgy system, and the height and pressure of fluidized bed in fluidized bed furnace determine the quality of the produced calcine. The fluidized bed roasting produces calcine, which is discharged from the discharge port of the fluidized bed furnace. The refractory material of the discharge port is eroded for a long time, and the height of the calcine is reduced, so that the calcine is easily discharged from the fluidized bed furnace, resulting in thinning of the material layer in the furnace, and the height of the fluidized bed and the pressure of the furnace bottom also decrease. After the fluidized bed in the fluidized bed furnace thins, the heat stored in the furnace decreases, the temperature of the fluidized bed is unstable, and the furnace condition fluctuates greatly. At the same time, the residence time of the calcine in the furnace is reduced, and the zinc concentrate cannot be fully burned, resulting in high residual and insoluble sulfur in the calcine. In order to stabilize the production of fluidized bed furnace calcine, the speed of the furnace bottom fan is rarely adjusted. Under the same air volume, the height of the smoke rising in the fluidized bed furnace increases after the pressure of the fluidized bed decreases, causing the temperature at the top of the furnace to rise and the smoke to increase, forming a material in the waste heat boiler, increasing the difficulty of manual dust removal, and increasing the sulfur content of the boiler smoke. The residual and insoluble sulfur of the produced calcine increases, affecting the zinc hydrometallurgy.
[0003] In order to stabilize the height of the fluidized bed and the pressure in the furnace, a baffle is added to the discharge port. The baffle is made of 12mm thick stainless steel with high temperature resistance and erosion resistance. The refractory material of the discharge port is eroded to form an irregular concave-convex surface, and the baffle is continuously eroded and damaged with the furnace wall and the discharge port. In addition, the grade and density of zinc concentrate are different, so the pressure in the furnace fluctuates during roasting. Therefore, different height baffles need to be replaced continuously to stabilize production. UTILITY MODEL CONTENT
[0004] Therefore, the utility model aims to provide a baffle for the discharge port of a fluidized bed furnace to solve the technical problems raised in the background.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a baffle for the discharge port of a fluidized bed furnace, comprising a panel and a baffle, the back of the panel is welded with a support frame, the upper part of the support frame is welded with a stand, the baffle is installed on the support frame and the back is in contact with the stand, the straight line distance between the baffle and the panel is 150mm, and the back of the panel is welded with a hanging plate on both sides.
[0006] Further, the hanging plate and the back of the panel form a 120° angle.
[0007] Further, the panel is a 12mm-thick stainless steel plate, and the baffle is a 10mm-thick stainless steel plate.
[0008] The utility model discloses a baffle plate for the discharge port of a fluidized bed furnace, which comprises a panel and a baffle. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 It is the front view structure schematic drawing of the utility model;
[0010] Figure 2 It is the side view structure schematic drawing of the utility model. Figure 1 DETAILED DESCRIPTION
[0011] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are used only for explaining the utility model, and cannot be understood as limiting the utility model.
[0012] The embodiments of the utility model will be described below according to the overall structure of the utility model.
[0013] As shown in the drawings, the utility model discloses a baffle plate for the discharge port of a fluidized bed furnace, which comprises a panel and a baffle. Figures 1-2 The baffle plate comprises a panel and a baffle, the back surface of the panel is welded with a support frame, the upper portion of the support frame is welded with a stand, the baffle is installed on the support frame and the back surface of the baffle is in contact with the stand, the straight-line distance between the baffle and the panel is 150mm, the back surface of the panel is welded with a hanging plate on both sides, the angle between the hanging plate and the back surface of the panel is 120°, the width of the baffle plus the edge ear exceeds the width of the discharge port to prevent the baffle plate from turning inwards.
[0014] The panel 1 is a 12mm-thick stainless steel plate, the width and height of which are determined according to the size of the discharge port, the baffle 2 is a 10mm-thick stainless steel plate, the width and height of which are determined according to the size of the discharge port, the height of the baffle 2 after installation is slightly higher than that of the panel 1, the purpose of the panel 1 and the baffle 2 is not to completely seal the discharge port, and the function is to adjust the height of the discharge port, when the calcined sand is discharged from the inside and outside of the furnace, the space between the baffle and the panel is filled, a 150mm-thick calcined sand layer is formed, the calcined sand can well play a sealing role, meanwhile, the calcined sand increases the weight of the baffle, the possibility of the baffle being blown and deformed to leak material is reduced, the amount of calcined sand in the furnace, the height of the boiling layer, the pressure in the furnace and the temperature of the boiling furnace can be well controlled, and the production can be stably controlled and operated.
[0015] Although the embodiments of the utility model have been shown and described, the specific embodiments are only an explanation of the utility model, and are not a limitation of the utility model, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner, and the person skilled in the art can make modifications, replacements and changes without creative contribution after reading the specification, but as long as in the range of the claims of the utility model, it is protected by the patent law.
Claims
1. A baffle plate for a discharge port of a fluidized bed furnace, characterized in that: It includes a panel and a baffle. A support frame is welded on the back of the panel, and a column is welded above the support frame. The baffle is installed on the support frame and the back is in contact with the column. The straight-line distance between the baffle and the panel is 150mm, and hanging plates are welded on both sides of the back of the panel.
2. The baffle plate for a fluidized bed furnace discharge port according to claim 1, characterized in that: The hanging plate forms an angle of 120° with the back of the panel.
3. The baffle plate for a fluidized bed furnace discharge port according to claim 1, characterized in that: The panel is a stainless steel plate with a thickness of 12 mm, and the baffle is a stainless steel plate with a thickness of 10 mm.