Feeding device of dry kiln for ironmaking
By setting up a heat-conducting plate and a pusher plate structure in the feeding device of the drying kiln, the heat of the drying kiln and the longitudinal bar crushing are used to solve the problem of poor drying effect caused by wet ore agglomeration, and the ore is fully dried.
Patent Information
- Application Number
- CN202520083732.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-01-14
AI Technical Summary
In rotary kilns, the clumping of wet ore leads to poor drying results, especially in the initial stages where insufficient drying is not achieved.
Design a feeding device for a drying kiln in ironmaking. By setting an arc-shaped heat-conducting plate and a pusher plate structure in the feeding box, the heat of the drying kiln is used to heat the heat-conducting plate, evaporate the moisture in the wet ore, and the longitudinal and vertical rod structures break up the agglomerated ore, ensuring that the ore is fully dried before entering the drying kiln.
This process achieves partial evaporation of moisture and breakup of agglomerates in wet ore before it enters the drying kiln, ensuring that the ore achieves a better drying effect in the initial stage and improving the overall drying efficiency of the drying kiln.
Smart Images
Figure CN223925365U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of feeding structure technology, specifically a feeding device for a drying kiln used in ironmaking. Background Technology
[0002] Rotary drying kilns are a type of thermal equipment widely used in non-ferrous metallurgical plants. In the non-ferrous metallurgical process, various materials such as concentrates, fluxes, solid fuels, and various slags often need to be dried before being fed into the furnace. The main equipment for drying materials is the rotary drying kiln. Rotary drying kilns are the most widely used in the metallurgical industry and have been around for over a century. They occupy an important position, especially in non-ferrous metal production, and are used to heat and dehydrate ores, concentrates, and intermediate products.
[0003] When drying wet ore, the high humidity can cause it to clump together. Since the length of a rotary drying kiln is fixed, when iron ore enters the kiln in a clumped state, the initial clumps do not disperse, resulting in poor drying. Furthermore, the ore may not be fully dried by the time it reaches the other end. Therefore, we propose a feeding device for an ironmaking drying kiln. Utility Model Content
[0004] The purpose of this invention is to provide a feeding device for a drying kiln in ironmaking. By allowing heat from the rotary drying kiln to enter the feeding box below the heat-conducting plate, the heat-conducting plate is heated. When wet iron ore containing lumps enters the feeding box above the heat-conducting plate, some of the moisture is evaporated by the heat. Then, after being pushed between the longitudinal and vertical rods, the lumps of ore are dispersed and enter the drying kiln, ensuring that the iron ore achieves a good drying effect in the early stage, thus solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a feeding device for a drying kiln in ironmaking, comprising a feeding box and a feeding hopper, wherein the feeding hopper is horizontally positioned above the feeding box, and the bottom of the feeding hopper is connected to the upper interior of the feeding box; a heat-conducting plate is horizontally fixed in the middle of the interior of the feeding box, the heat-conducting plate being arc-shaped, and a push plate that can slide left and right is provided inside the feeding box above the heat-conducting plate, the outer ring of the push plate being close to the surface of the heat-conducting plate, and multiple push rods are horizontally installed on the outer surface of the feeding box on the side of the push plate, the protruding ends of the multiple push rods penetrating into the interior of the feeding box, and the ends of the multiple push rods being fixed to the surface of the push plate, and a conduit communicating with the interior of the feeding box is connected to the side of the feeding box below the heat-conducting plate; a discharge port is provided on the inner wall surface of the feeding box on the side away from the push plate above the heat-conducting plate, and vertical rods and longitudinal rods that are perpendicularly intersecting are evenly arranged inside the discharge port.
[0006] By adopting the above technical solution, the feeding pipe is connected to the feed inlet of the drying kiln, and the conduit is connected to the heating system of the drying kiln. After the iron ore is fed into the feeding box through the feeding hopper, it will be heated by the heat conduction plate inside the drying kiln to evaporate the moisture. Then it will be pushed and dispersed by the action of the vertical rod and the longitudinal rod, and then enter the drying kiln. It will receive better drying effect in the early stage to ensure the final dryness.
[0007] Optionally, a heat insulation layer is fixed to the inner wall surface of the feeding box below the heat-conducting plate and the inner wall surface of the conduit. The heat insulation layer is fixed to the inner wall surface of the feeding box and the conduit by a bonding method.
[0008] By adopting the above technical solution, the heat insulation layer serves to insulate the inside of the feeding box below the heat-conducting plate, thereby reducing heat loss from the inside of the feeding box.
[0009] Optionally, the surface of the feeding box at the bottom of the feeding hopper is provided with an upper opening, and the bottom of the feeding hopper is connected to the inside of the feeding box through the upper opening.
[0010] Optionally, a feeding pipe is connected to the side wall surface of the feeding box at the discharge port, and the feeding pipe is connected to the discharge port.
[0011] By adopting the above technical solution, during feeding, the discharge port is connected to the feed port of the rotary kiln through a feeding pipe.
[0012] Optionally, both the end of the feeding pipe and the end of the conduit are provided with flanges, and the inner rings of the flanges are connected to the feeding pipe and the conduit, respectively.
[0013] By adopting the above technical solution, the purpose of connecting the feeding pipe to the feed pipe or conduit at the rotary kiln inlet and the rotary kiln heating system pipeline is achieved using flanges.
[0014] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:
[0015] 1. The technical solution of this application sets up a feeding box with an arc-shaped heat-conducting plate fixed in the middle position, so that the heat in the rotary drying kiln can enter the feeding box below the heat-conducting plate to heat the heat-conducting plate. When wet iron ore containing lumps enters the feeding box above the heat-conducting plate, some of the moisture will be evaporated by the heat first. Then, after being pushed between the longitudinal and vertical rods, the lumps of ore can be dispersed and enter the drying kiln, ensuring that the iron ore can obtain a good drying effect in the early stage and be fully dried.
[0016] 2. The technical solution of this application reduces heat loss from the inside of the feeding box below the heat-conducting plate by attaching and fixing a heat insulation layer to both the inner wall surface of the feeding box below the heat-conducting plate and the inner wall surface of the conduit. Attached Figure Description
[0017] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0018] Figure 1 This is a schematic diagram of the overall structure of the feeding device for the drying kiln of ironmaking according to this utility model;
[0019] Figure 2 This is a schematic diagram of the internal front view of the feeding device for the ironmaking drying kiln of this utility model;
[0020] Figure 3 This is a schematic diagram of the internal structure of the feeding device for the drying kiln of ironmaking according to this utility model, viewed from the right.
[0021] In the diagram: 1. Feeding box; 11. Discharge port; 111. Feeding pipe; 112. Vertical rod; 113. Longitudinal rod; 12. Guide tube; 13. Insulation layer; 2. Feed hopper; 21. Top opening; 3. Heat-conducting plate; 4. Multi-stage push rod; 41. Push plate. Detailed Implementation
[0022] Please see Figure 1-3 This utility model provides a technical solution: a feeding device for a drying kiln for ironmaking, including a feeding box 1 and a feeding hopper 2. The feeding hopper 2 is horizontally arranged above the feeding box 1. The surface of the feeding box 1 at the bottom of the feeding hopper 2 is provided with an upper opening 21, so that the bottom of the feeding hopper 2 is connected to the inside of the feeding box 1 through the upper opening 21. Wet iron ore can be added through the feeding hopper 2 and enter the inside of the feeding box 1 through the upper opening 21.
[0023] A heat-conducting plate 3 is horizontally fixed in the middle of the inside of the feeding box 1. The heat-conducting plate 3 is arc-shaped. The wet iron ore entering the feeding box 1 is placed on the surface of the heat-conducting plate 3. The side of the feeding box 1 below the heat-conducting plate 3 is connected to a conduit 12 that communicates with its interior. The end of the conduit 12 is provided with a flange. The inner ring of the flange is connected to the conduit 12. Before use, the conduit 12 can be connected to the heating structure of the rotary kiln through the flange. The heat inside the rotary kiln can be introduced to the area below the heat-conducting plate 3 inside the feeding box 1, thereby heating the heat-conducting plate 3. The heat can be used to heat the wet iron ore and evaporate some of the moisture.
[0024] A heat insulation layer 13 is fixed to the inner wall surface of the feeding box 1 below the heat conduction plate 3 and the inner wall surface of the conduit 12. The heat insulation layer 13 is fixed to the inner wall surface of the feeding box 1 and the conduit 12 by bonding, which can reduce heat loss during use.
[0025] Inside the feeding box 1 above the heat-conducting plate 3, there is a sliding push plate 41. The outer ring of the push plate 41 is close to the surface of the heat-conducting plate 3. A multi-stage push rod 4 is horizontally installed on the outer surface of the feeding box 1 on the side of the push plate 41. The protruding end of the multi-stage push rod 4 extends into the inside of the feeding box 1, and the end of the multi-stage push rod 4 is fixed to the surface of the push plate 41. After the wet iron ore is added, the multi-stage push rod 4 drives the push plate 41 to the right, pushing the iron ore to the right. An outlet 11 is opened on the inner wall surface of the feeding box 1 on the side above the heat-conducting plate 3 away from the push plate 41. Vertical rods 112 and longitudinal rods 113 are evenly arranged inside the outlet 11. The iron ore is pushed to the right. As the iron ore passes through the discharge port 11, the iron ore, having evaporated some of its moisture, is easily broken apart by the staggered longitudinal rods 113 and vertical rods 112. The side wall of the feeding box 1 at the discharge port 11 is connected to a feeding pipe 111, which is connected to the discharge port 11. A flange is provided at the end of the feeding pipe 111, and the inner ring of the flange is connected to the feeding pipe 111. The flange can be connected to the feed port of the rotary kiln, allowing the dispersed iron ore to be fed into the rotary kiln for drying. Because the iron ore is dispersed, it can receive better hot air drying in the early stages of entering the rotary kiln, ensuring that it is fully dried when it reaches the end.
[0026] In use, the device is supported and fixed to the feed end of the rotary dryer using a bracket or other support structure, so that the discharge port 11 is connected to the feed port of the rotary dryer, and the conduit 12 is connected to the heating system of the rotary dryer, thus communicating with the interior of the rotary dryer. When the rotary dryer is working, hot air enters the lower part of the feeding box 1 through the conduit 12, heating the heat-conducting plate 3. Wet iron ore is added from the feed hopper 2, and then enters from the upper opening 21 above the heat-conducting plate 3 inside the feeding box 1. The wet iron ore is heated by the heat-conducting plate 3, causing some of the moisture to evaporate. Then, the multi-stage pusher 4 is activated, which drives the pusher plate 41 to move to the right, pushing the iron ore to the right. When the iron ore with some moisture evaporated enters the feed pipe 111 through the discharge port 11, it is acted upon by the vertically crisscrossed vertical rods 112 and longitudinal rods 113, which disperse the clumps of iron ore. Finally, it enters the rotary drying kiln through the feed pipe 111. Then, the multi-stage pusher 4 drives the pusher plate 41 to reset, and the feeding operation continues.
Claims
1. A charging device for a dry kiln for ironmaking, comprising a charging box (1) and a feed hopper (2), characterized in that: The feeding hopper (2) is transversely arranged above the feeding box (1), and the bottom of the feeding hopper (2) is in communication with the interior of the feeding box (1) above; The feeding box (1) is transversely fixed with a heat-conducting plate (3) at the middle position of the interior, the heat-conducting plate (3) is arc-shaped, the interior of the feeding box (1) above the heat-conducting plate (3) is provided with a push plate (41) which can slide left and right, the outer ring of the push plate (41) is close to the surface of the heat-conducting plate (3), the outer surface of the feeding box (1) at the side of the push plate (41) is transversely installed with a multi-stage push rod (4), the extending end of the multi-stage push rod (4) penetrates into the interior of the feeding box (1), and the end of the multi-stage push rod (4) is fixed on the surface of the push plate (41), the side of the feeding box (1) below the heat-conducting plate (3) is connected with a duct (12) which is in communication with the interior thereof; The interior of the discharge port (11) is uniformly provided with vertical rods (112) and longitudinal rods (113) which are perpendicular to each other and staggered.
2. The charging device for the drying kiln for iron making as claimed in claim 1, wherein: The interior of the discharge port (11) is uniformly provided with vertical rods (112) and longitudinal rods (113) which are perpendicular to each other and staggered.
3. The charging device for the drying kiln for iron making as claimed in claim 1, wherein: The interior of the discharge port (11) is uniformly provided with vertical rods (112) and longitudinal rods (113) which are perpendicular to each other and staggered.
4. The charging device for the drying kiln for iron making as claimed in claim 1, wherein: The interior of the discharge port (11) is uniformly provided with vertical rods (112) and longitudinal rods (113) which are perpendicular to each other and staggered.
5. The charging device for a drying kiln for iron making as claimed in claim 4, characterized in that: The interior of the discharge port (11) is uniformly provided with vertical rods (112) and longitudinal rods (113) which are perpendicular to each other and staggered. The interior of the discharge port (11) is uniformly provided with vertical rods (112) and longitudinal rods (113) which are perpendicular to each other and staggered.