Refractory brick with mosaic type lifter and rotary kiln
By embedding a lifting device on the refractory bricks, the problems of heat loss and maintenance difficulties caused by welding are solved, and convenient installation and low-cost maintenance are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA ALUMINUM ZHONGZHOU ALUMINUM CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-03
AI Technical Summary
In the existing technology, the material lifting device is welded to the rotary kiln body, which increases heat loss and makes repair difficult and costly after damage.
An embedded lifting device is used, in which the lifting device is embedded into the refractory brick through the protrusions and grooves on the brick, avoiding welding and achieving a physical connection between the refractory brick and the lifting device.
It reduces heat loss, simplifies the installation and disassembly process, and lowers maintenance costs and time.
Smart Images
Figure CN224455410U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of rotary kiln equipment, specifically to a refractory brick and a rotary kiln with an embedded material lifting device. Background Technology
[0002] Rotary kilns are commonly used roasting equipment in the metallurgical industry. To enhance heat exchange of materials within the rotary kiln, a material lifting device is installed in the lining, with a structure as follows: Figure 1 As shown, the arrangement of the lifting device is relatively regular, which facilitates the laying of refractory bricks. In actual construction, the lifting device is usually installed by welding, that is, the lifting device is welded to the rotary kiln shell. Therefore, it is difficult to lay refractory bricks tightly around the lifting device. Thus, cast-in-place lining is still used around the lifting device, such as... Figure 2 As shown, it has the following disadvantages: First, the lifting device is welded to the rotary kiln body, which increases heat loss; second, it is difficult to repair the lifting device after it is damaged, and the dismantling and restoration costs are high and the construction period is long. Utility Model Content
[0003] Therefore, in order to solve the problems in the prior art, this utility model proposes a refractory brick and rotary kiln with an embedded material lifting device, the specific structure of which is as follows:
[0004] A refractory brick with an embedded lifting device includes the lifting device and the refractory brick. The lifting device is an inclined plate-shaped structure consisting of a middle plate and side plates perpendicular to the left and right sides of the middle plate. The width of the side plates is greater than the thickness of the middle plate. The middle plate consists of a vertical plate and an inclined plate. The inclined plate is connected to the upper edge of the vertical plate, and the angle between the inclined plate and the vertical plate is greater than 90° and less than 180°. A protrusion is provided near the bottom edge of the vertical plate. One side of the two sets of side plates connected to the middle plate is flush with one side of the middle plate, and the other side is located on the side where the inclined plate and the vertical plate form an obtuse angle. The refractory brick has a boss structure, consisting of a base and a boss. The boss is located on one side of the base, and its width is less than the width of the base. A groove is formed on the lower outer side of the boss. The width of the space formed between one side of the boss and the top of the base is not less than the thickness of the side plate of the lifting device, and the depth is not less than the width of the side plate of the lifting device protruding from the middle plate. The width of the boss is the same as the width of the middle plate, and its height is less than the height of the vertical plate. The boss and the groove are interlocked. The vertical plate fits against the boss, and the part of the side plate protruding from the middle plate is embedded in the space formed between one side of the boss and the top of the base.
[0005] Furthermore, the width of the side plate is twice the thickness of the middle plate.
[0006] Furthermore, the angle between the inclined plate and the vertical plate is greater than 120° and less than 150°.
[0007] Furthermore, the protrusions are provided in two symmetrical shapes, and the grooves are also provided in two symmetrical shapes.
[0008] Furthermore, the protrusions and grooves are cylindrical in shape.
[0009] A rotary kiln using the aforementioned refractory bricks with embedded lifting devices, wherein a plurality of the refractory bricks with embedded lifting devices are constructed on the inner wall of the rotary kiln and are symmetrical about the center of the rotary kiln cross section.
[0010] The beneficial effects of this utility model are as follows: The refractory bricks of this utility model are inlaid with a lifting device, which is attached to the refractory bricks through a physical structure, rather than being welded to the kiln body. During the brick lining construction, the lifting plate is embedded into the lining, avoiding heat loss caused by welding the lifting device to the rotary kiln body, thus improving the heat preservation and heating effect. Furthermore, installation and disassembly are convenient; it can be constructed using normal methods, and repair and maintenance can be achieved by replacing individual refractory bricks. Therefore, the refractory brick structure in this utility model with the inlaid lifting device is simple, easy to install and disassemble, and does not generate additional heat loss. Attached Figure Description
[0011] The embodiments of this utility model will be further described below with reference to the accompanying drawings, wherein:
[0012] Figure 1 A cross-sectional view of a rotary kiln equipped with a material lifting device in the prior art is shown;
[0013] Figure 2 The masonry structure of a material lifting device in the prior art is shown;
[0014] Figure 3 A schematic diagram of the material lifting device of this utility model is shown;
[0015] Figure 4 A schematic diagram of the structure of the refractory brick of this utility model is shown;
[0016] Figure 5 A schematic diagram of the rotary kiln of this utility model is shown. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.
[0018] In one embodiment, such as Figure 3-4As shown, a refractory brick with an embedded lifting device includes a lifting device and a refractory brick. The lifting device is an inclined plate-shaped structure, consisting of a middle plate 1 and side plates 2 perpendicular to the left and right sides of the middle plate. The width of the side plates 2 is twice the thickness of the middle plate 1, meaning that after connecting with the middle plate 1, the width of the protruding part (in the thickness direction of the middle plate) is the same as the thickness of the middle plate. The middle plate consists of a vertical plate 11 and an inclined plate 12, which can be formed as one piece or spliced from two plates. The inclined plate 12 is connected to the upper edge of the vertical plate 11, and the angle between the inclined plate 12 and the vertical plate 11 is 135°. Two symmetrical cylindrical protrusions 3 are provided near the bottom edge of the vertical plate 11. One side of the two sets of side plates 2 connected to the middle plate 1 is flush with one side of the middle plate 1, and the other side is located on the side where the inclined plate 12 and the vertical plate 11 form an obtuse angle, i.e., not the side with an obtuse angle on the back. The refractory brick has a boss structure, consisting of a base 4 and a boss 5, which can be integrally formed by removing two pieces from the upper surface of the brick without reaching the bottom. The boss 5 is located on one side of the base 4, and the width of the boss 5 is less than the width of the base 4. The other side, i.e., the length, is the same as the base. Two cylindrical grooves 6 matching the protrusion 3 are opened on the lower side of the outer side of the boss 5. The width of the space formed between one side of the boss 5 and the top of the base 4 is not less than the thickness of the side plate 2 of the lifting device, and the depth is not less than the width of the side plate 2 of the lifting device protruding from the middle plate. The width of the boss 5 is the same as the width of the middle plate 1, and the height is less than the height of the vertical plate 11. The protrusion 3 and the groove 6 are inlaid and connected. The vertical plate 11 is attached to the boss 5. The part of the side plate 2 protruding from the middle plate 1 is embedded in the space formed between one side of the boss 5 and the top of the base 4. The upper parts of the vertical plate 11 and the inclined plate 12 protrude from the refractory brick. Figure 4 The left view and the BB section diagram illustrate the partial cross-section of the brick body around the groove.
[0019] like Figure 5 As shown, multiple refractory bricks with embedded lifting devices are built on the inner wall of the rotary kiln and are symmetrical about the center of the rotary kiln cross section.
[0020] The foregoing description describes some exemplary embodiments of this utility model. It is understood that the above embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model. The features in these embodiments can be recombine in a suitable manner, and the resulting solutions are still within the scope of protection claimed by this utility model. Based on the above embodiments, all other embodiments obtained by those skilled in the art without inventive effort, that is, all modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, fall within the scope of protection claimed by this utility model.
Claims
1. A refractory brick with an inlaid spout device, characterized in that, The assembly includes a lifting device and refractory bricks. The lifting device is an inclined plate structure consisting of a middle plate (1) and side plates (2) perpendicular to the left and right sides of the middle plate. The width of the side plates (2) is greater than the thickness of the middle plate (1). The middle plate consists of a vertical plate (11) and an inclined plate (12). The inclined plate (12) is connected to the upper edge of the vertical plate (11) and the angle between the inclined plate (12) and the vertical plate (11) is greater than 90° and less than 180°. A protrusion (3) is provided near the bottom edge of the vertical plate (11). One side of the two sets of side plates (2) connected to the middle plate (1) is flush with one side of the middle plate (1), and the other side is located on the side where the inclined plate (12) and the vertical plate (11) form an obtuse angle. The refractory bricks are a boss structure consisting of a base ( 4) and a boss (5) are formed. The boss (5) is located on one side of the base (4). The width of the boss (5) is less than the width of the base (4). A groove (6) is provided on the lower side of the outer side of the boss (5). The width of the space formed between one side of the boss (5) and the top of the base (4) is not less than the thickness of the side plate (2) of the lifting device, and the depth is not less than the width of the side plate (2) of the lifting device protruding from the middle plate. The width of the boss (5) is the same as the width of the middle plate (1), and the height is less than the height of the vertical plate (11). The protrusion (3) and the groove (6) are inlaid and connected. The vertical plate (11) is attached to the boss (5). The part of the side plate (2) protruding from the middle plate (1) is embedded in the space formed between one side of the boss (5) and the top of the base (4).
2. A firebrick with an inlaid spout according to claim 1, characterized in that, The width of the side plate (2) is twice the thickness of the middle plate (1).
3. A firebrick with a mosaic flighting device according to claim 1, characterized in that The angle between the inclined plate (12) and the vertical plate (11) is greater than 120° and less than 150°.
4. A firebrick with an inlaid spout according to claim 1, wherein The protrusion (3) is provided in two symmetrical parts, and the groove (6) is also provided in two symmetrical parts.
5. A firebrick with a mosaic flighting device as claimed in claim 1, wherein, The protrusion (3) and groove (6) are cylindrical in shape.
6. A rotary kiln using the refractory brick with the mosaic-style lifter according to any one of claims 1 to 5, characterized in that, Multiple refractory bricks with embedded lifting devices are laid on the inner wall of the rotary kiln and are symmetrical about the center of the rotary kiln cross section.