Masonry structure of high aluminum phosphate bricks of active lime rotary kiln
By using high-aluminum phosphate composite bricks, aluminum dihydrogen phosphate refractory mud and aluminum silicate fiber cotton in active lime rotary kilns, the problems of high kiln skin temperature and large heat loss are solved, effective heat insulation and high temperature resistance are achieved, and thermal energy utilization efficiency is improved.
Patent Information
- Application Number
- CN202421955515.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-13
AI Technical Summary
In the prior art, the kiln skin temperature during the production process is high, the heat loss is large, making it difficult to effectively insulate and withstand high temperatures.
The masonry method of high-aluminum refractory mud plus aluminum silicate fiber cotton using high-aluminum phosphate composite bricks and aluminum dihydrogen phosphate is used to form an integral structure through the fixed connection of composite bricks, fiber cotton and refractory mud to reduce heat loss.
It effectively reduces the kiln skin temperature inside the rotary kiln, reduces heat loss, improves heat energy utilization efficiency, and maintains the thermal insulation function under high temperature conditions.
Smart Images
Figure CN222938233U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lime industry, and particularly relates to a masonry structure of high-aluminum phosphate bricks for an active lime rotary kiln. Background Art
[0002] At present, magnesia bricks and magnesia composite bricks for active lime rotary kilns are dry-laid, while clay bricks, high-aluminum bricks and high-aluminum phosphate composite bricks are all laid with refractory mortar.
[0003] For the above masonry methods, the temperature of the kiln skin is high and the heat loss is large during the production process of the rotary kiln. To overcome the above disadvantages, the utility model adopts a masonry method of high-aluminum phosphate composite bricks plus high-aluminum refractory mortar of aluminum dihydrogen phosphate plus aluminum silicate fiber cotton. During the production process of the rotary kiln, the temperature of the kiln skin will be significantly reduced, reducing heat loss. Content of the Utility Model
[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a masonry structure of high-aluminum phosphate bricks for an active lime rotary kiln. Through the masonry of high-aluminum phosphate composite bricks and high-aluminum refractory mortar of aluminum dihydrogen phosphate plus aluminum silicate fiber cotton, it can effectively insulate heat and resist high temperature, reduce the temperature of the kiln skin inside the rotary kiln, which helps to reduce heat loss and improve the thermal energy utilization efficiency.
[0005] The utility model also provides a masonry structure of high-aluminum phosphate bricks for an active lime rotary kiln as described above, including: the inner wall of the rotary kiln, the inner surface of the inner wall of the rotary kiln is fixedly connected with fiber cotton, the inner surface of the fiber cotton is fixedly connected with composite bricks, and refractory mortar is fixedly connected between the composite bricks.
[0006] According to the masonry structure of high-aluminum phosphate bricks for an active lime rotary kiln of the utility model, the fiber cotton is specifically aluminum silicate fiber cotton, and through the above components, the heat insulation and heat preservation function is enhanced.
[0007] According to the masonry structure of high-aluminum phosphate bricks for an active lime rotary kiln of the utility model, the composite brick is specifically a high-aluminum phosphate brick, and through the above components, the heat insulation and heat preservation function is further enhanced.
[0008] According to the masonry structure of high-aluminum phosphate bricks for an active lime rotary kiln of the utility model, the refractory mortar is specifically a binder, and the binder is specifically high-aluminum refractory mortar of aluminum dihydrogen phosphate. Through the above components, it is convenient to form an integral body of the high-aluminum phosphate composite bricks at normal temperature and high temperature, so that the composite bricks, fiber cotton and the inner wall of the rotary kiln form an integral body. During the rotation process of the rotary kiln, the heat insulation and heat preservation function of the fiber cotton is maintained.
[0009] Beneficial Effects
[0010] 1. Compared with the prior art, the masonry structure of the high-aluminum phosphate brick for the active lime rotary kiln can effectively insulate heat and withstand high temperatures through the masonry of high-aluminum phosphate composite bricks, high-aluminum refractory mortar of aluminum dihydrogen phosphate, and aluminum silicate fiber cotton. It can reduce the skin temperature inside the rotary kiln, which helps to reduce heat loss and improve the thermal energy utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The present invention will be further described below in conjunction with the drawings and embodiments;
[0012] Figure 1 It is a sectional front view structure diagram of the masonry structure of the high-aluminum phosphate brick for an active lime rotary kiln of the present invention;
[0013] Figure 2 It is a sectional left view structure diagram of the masonry structure of the high-aluminum phosphate brick for an active lime rotary kiln of the present invention;
[0014] Figure 3 It is a sectional right view structure diagram of the masonry structure of the high-aluminum phosphate brick for an active lime rotary kiln of the present invention.
[0015] Legend Explanation:
[0016] 1. Composite brick; 2. Fiber cotton; 3. Inner wall of rotary kiln; 4. Refractory mortar. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0017] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The role of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the protection scope of the present invention.
[0018] Refer to Figures 1 - 3 , in an embodiment of the present invention, a masonry structure of a high-aluminum phosphate brick for an active lime rotary kiln includes: an inner wall 3 of the rotary kiln, a fiber cotton 2 is fixedly connected to the inner surface of the inner wall 3 of the rotary kiln, a composite brick 1 is fixedly connected to the inner surface of the fiber cotton 2, and a refractory mortar 4 is fixedly connected between the composite bricks 1.
[0019] The fiber cotton 2 is specifically aluminum silicate fiber cotton, which is used to increase the heat insulation and heat preservation function. The composite brick 1 is specifically a high-aluminum phosphate brick, which is used to further increase the heat insulation and heat preservation function. The refractory mortar 4 is specifically a binder, and the binder is specifically a high-aluminum refractory mortar of aluminum dihydrogen phosphate, which is used to form an integral body of the high-aluminum phosphate composite brick at normal temperature and high temperature, so that the composite brick, the fiber cotton, and the inner wall of the rotary kiln form an integral body, and during the rotation of the rotary kiln, the heat insulation and heat preservation function of the fiber cotton is maintained.
[0020] Thermal insulation effect: Open the furnace door of the laboratory electric furnace. Combine two high-aluminum phosphate composite bricks with high-aluminum phosphate refractory mortar. Place them at the furnace door of the electric furnace, with the heavy part facing inwards and the insulation part facing outwards. Wrap the heavy part with alumina fiber up to the top, bottom, and both side walls. Wrap the insulation part with aluminum silicate fiber cotton up to the top, bottom, and both side walls, including the exposed part. Cut the aluminum silicate fiber cotton to a size smaller than the large end face of the composite brick and press it tightly against the large end faces of the two composite bricks. Press and compact the aluminum silicate fiber cotton with a 24-mm steel plate smaller than the large end face of the composite brick. Support the steel plate with brackets below and heat up. Monitor the temperature of the steel plate, which represents the wall of the rotary kiln.
[0021] Furnace temperature Heat preservation time Steel plate temperature 800℃ 5 hours 50℃ 900℃ 5 hours 55℃～58℃ 1000℃ 5 hours 60℃～70℃ 1100℃ 5 hours 80℃～90℃ 1200℃ 5 hours 95℃～100℃ 1300℃ 5 hours 105℃～110℃ 1400℃ 5 hours 120℃～135℃
[0022] This shows that the method of using high-aluminum phosphate composite bricks, high-aluminum refractory mortar, and aluminum silicate fiber cotton for masonry significantly reduces the temperature of the kiln skin of the rotary kiln and reduces heat loss.
[0023] Working principle: During masonry, cut the aluminum silicate fiber cotton 2 according to the length and lay it on the inner wall 3 of the rotary kiln. The length should be such that the two ends do not curl inwards. Place the composite brick 1 on the aluminum silicate fiber cotton 2 and press and compact it so that the aluminum silicate fiber cotton 2 is tightly attached to the inner wall 3 of the rotary kiln. Use high-aluminum phosphate refractory mortar 4 to masonry the composite brick 1. Note: Try not to let the mortar stick to the aluminum silicate fiber cotton.
[0024] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the relevant technical field, various changes can be made without departing from the purpose of the present invention.
Claims
1. A masonry structure of high-aluminum phosphate bricks for active lime rotary kiln, characterized in that: include: A rotary kiln inner wall (3), wherein the inner surface of the rotary kiln inner wall (3) is fixedly connected with fiber cotton (2), the inner surface of the fiber cotton (2) is fixedly connected with composite bricks (1), and refractory mud (4) is fixedly connected between the composite bricks (1).
2. The masonry structure of high-aluminum phosphate bricks for active lime rotary kiln according to claim 1, characterized in that: The fiber cotton (2) is specifically aluminum silicate fiber cotton.
3. The masonry structure of high-aluminum phosphate bricks for active lime rotary kiln according to claim 1, characterized in that: The composite brick (1) is specifically a high-aluminum phosphate brick.
4. The masonry structure of high-aluminum phosphate bricks for active lime rotary kiln according to claim 1, characterized in that: The refractory slurry (4) is specifically a binder, and the binder is specifically a high-alumina refractory slurry of aluminum dihydrogen phosphate.