A feeding system for energy saving and consumption reduction of a cement mill

Abstract

The utility model relates to cement production technology, show a kind of for cement mill energy saving and consumption reduction's feeding system, including cement batching device and dust removal device, cement batching device includes desulfurization gypsum storehouse, clinker storehouse, limestone storehouse and belt scale, the bottom of desulfurization gypsum storehouse, clinker storehouse and limestone storehouse is equipped with belt scale, cement batching device is connected by conveying belt and hoist, hoist connects V type powder concentrator, and the coarse material outlet of V type powder concentrator is connected with steady flow bin, and steady flow bin is connected with roller press, and the inlet end of hoist is connected with roller press, and the fine material outlet of V type powder concentrator is connected with dynamic powder concentrator, and dynamic powder concentrator is connected with steady flow bin, cyclone and ball mill, and cyclone is connected with chute, and chute is connected with ball mill, and dust removal device is equipped on conveying belt, hoist, V type powder concentrator, steady flow bin, roller press, dynamic powder concentrator, cyclone and chute.

Description

Technical Field

[0001] This utility model relates to the field of cement production technology, and more specifically, to a feeding system for energy saving and consumption reduction in cement mills. Background Technology

[0002] In cement production, the grinding process is an extremely energy-intensive step, accounting for over 60% of total energy consumption. Traditional ball mill systems suffer from high energy consumption, low efficiency, and unstable product quality. In recent years, cement mill roller press systems have emerged as a highly efficient and energy-saving grinding equipment system. By pre-treating materials through high-pressure roller pressing, they significantly reduce the grinding load on subsequent ball mills, thereby substantially improving the efficiency of the entire grinding system and reducing energy consumption. However, existing cement feeding systems still have shortcomings in feeding, grading, and wear-resistant protection, affecting the overall system performance and energy-saving effect. Therefore, developing a highly efficient, energy-saving, and stable cement mill energy-saving and consumption-reducing feeding system is of great significance. Utility Model Content

[0003] This application provides a feeding system for energy saving and consumption reduction in cement mills, which solves the problems of high energy consumption, low efficiency, and unstable product quality in traditional ball mill systems. Furthermore, the cement feeding system still has shortcomings in feeding, grading, and wear protection, which affect the overall performance and energy-saving effect of the system.

[0004] This application provides a feeding system for energy saving and consumption reduction in cement mills, including a cement batching device and a dust removal device. The cement batching device includes a desulfurized gypsum silo, a clinker silo, a limestone silo, and a belt scale. The belt scale is installed at the bottom of the desulfurized gypsum silo, the clinker silo, and the limestone silo. The cement batching device is connected to the inlet end of a conveyor belt via a conveyor belt. The outlet end of the conveyor belt is connected to a V-type air classifier. The coarse material outlet of the V-type air classifier is connected to a flow stabilizing bin. The flow stabilizing chamber is connected to a roller press, the discharge port of which is connected to the feed end of the elevator. The fine material outlet of the V-type classifier is connected to a dynamic classifier. The dynamic classifier is connected to the flow stabilizing chamber, the cyclone separator, and the ball mill via pipelines. The discharge port of the cyclone separator is connected to an inclined chute, which is connected to the ball mill. Dust removal devices are installed on the conveyor belt, the elevator, the V-type classifier, the flow stabilizing chamber, the roller press, the dynamic classifier, the cyclone separator, and the inclined chute.

[0005] Preferably, a flap is installed at the connection between the conveyor belt and the elevator.

[0006] Preferably, the dust removal device includes a dust collector and a dust collection fan.

[0007] Preferably, the dust collector is a bag filter.

[0008] Preferably, a circulating fan is installed above the cyclone.

[0009] Preferably, the roller surface of the roller press is made of high-chromium cast iron or wear-resistant material through welding.

[0010] As can be seen from the above technical solution, this application provides a feeding system for energy saving and consumption reduction in cement mills. During operation, materials fall from the desulfurized gypsum silo, clinker silo, and limestone silo onto the conveyor belt via belt scales. The conveyor belt transports the materials to the feed end of the elevator. The materials in the elevator enter the V-type classifier from the discharge end. The coarse powder selected in the V-type classifier enters the roller press evenly and stably through the flow stabilizing chamber. The roller press applies high pressure to the materials under set roller pressure and linear speed, causing cracks in the material particles. To reduce its grindability, the material passing through the roller press re-enters the feed end of the elevator from the roller press outlet. The fine powder selected in the V-type classifier enters the dynamic classifier, which uses the principles of eddy current classification, inertial classification, and centrifugal classification to improve particle distribution and enhance the quality of powder selection. Then, the qualified fine powder is separated and sent to the subsequent ball mill or finished product silo, while the coarse powder is returned to the roller press for further extrusion, forming a closed-loop cycle. The fine powder at the top of the dynamic classifier enters the cyclone separator, and the fine powder enters the ball mill from the cyclone separator outlet through the inclined chute.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model has significant energy-saving benefits, reducing unit power consumption by 20%-30%, saving a large amount of electricity every year, and reducing production costs.

[0012] 2. This utility model improves production efficiency, increasing the system's hourly output by more than 30% compared to traditional processes, thus meeting the needs of large-scale production.

[0013] 3. The finished cement product of this utility model meets the standards in terms of fineness, specific surface area, etc., has a reasonable particle size distribution, and improves strength and performance.

[0014] 4. This utility model has improved environmental performance, equipped with a high-efficiency dust removal system, reducing dust emissions, improving the workshop environment, and meeting environmental protection requirements.

[0015] In summary, the feeding system for cement mills exhibits significant energy-saving benefits, reducing unit power consumption by 20%-30%, saving a substantial amount of electricity annually, lowering production costs, and increasing hourly output by more than 30% compared to traditional processes. This meets the needs of large-scale production. Furthermore, the system is equipped with a high-efficiency dust removal system, reducing dust emissions, improving the workshop environment, and complying with environmental protection requirements. Attached Figure Description

[0016] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is a schematic diagram of a feeding system for energy saving and consumption reduction in cement mills provided by this utility model.

[0018] The reference numerals in the detailed embodiments are as follows: 1. Cement batching unit; 2. Desulfurized gypsum silo; 3. Clinker silo; 4. Limestone silo; 5. Belt scale; 6. Conveyor belt; 7. Elevator; 8. V-type air classifier; 9. Stabilizing silo; 10. Roller press; 11. Dynamic air classifier; 12. Cyclone separator; 13. Circulating fan; 14. Dust removal device; 15. Dust collector; 16. Dust collection fan; 17. Ball mill; 18. Tilting plate; 19. Inclined chute. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0020] See Figure 1 This application discloses a feeding system for cement mills that promotes energy conservation and reduces consumption. The system addresses the problems of high energy consumption, low efficiency, and unstable product quality in traditional ball mill systems, as well as shortcomings in feeding, grading, and wear protection that affect overall system performance and energy efficiency. The proposed system offers significant energy savings, reducing unit power consumption by 20%-30%, resulting in substantial annual energy savings, reduced production costs, and increased hourly output by over 30% compared to traditional processes. This meets the demands of large-scale production. Furthermore, the system incorporates a high-efficiency dust removal system to reduce dust emissions, improve the workshop environment, and comply with environmental protection requirements.

[0021] Specifically, a feeding system for energy saving and consumption reduction in cement mills includes a cement batching device 1 and a dust removal device 14. The cement batching device 1 includes a desulfurized gypsum silo 2, a clinker silo 3, a limestone silo 4, and a belt scale 5. Belt scales 5 are installed at the bottom of the desulfurized gypsum silo 2, clinker silo 3, and limestone silo 4. The cement batching device 1 is connected to the feed end of an elevator 7 via a conveyor belt 6. Materials fall from the desulfurized gypsum silo 2, clinker silo 3, and limestone silo 4 onto the conveyor belt 6 after passing through the belt scales 5. The conveyor belt 6 transports the materials to the feed end of the elevator 7. The conveyor belt 6 and the elevator 7 are connected... A flap 18 is installed at the connection point. When the system malfunctions, the flap 18 flips outward to discharge the material. The discharge end of the elevator 7 is connected to a V-type classifier 8. The coarse material outlet of the V-type classifier 8 is connected to a flow stabilizing bin 9. The existing automatic control system, belt scale 5, and flow stabilizing bin 9 are combined, and the system has a speed adjustment function. The feeding amount can be adjusted according to the system operation. The flow stabilizing bin 9 is connected to a roller press 10. The roller diameter of the roller press 10 is 1400-2000mm, the roller width is 500-1000mm, the roller pressure is controlled at 50-150MPa, and the roller linear speed is 1.0-2.The roller press 10 has a speed of 0 m / s. The roller surface is made of high-chromium cast iron or welded wear-resistant material. Wear-resistant treatment of the roller surface, wear-resistant liners and guide plates at the equipment inlet and outlet, and sealing protection of the transmission parts extend the service life of the equipment and save costs. The discharge port of the roller press 10 is connected to the inlet end of the elevator 7. The coarse powder selected in the V-type classifier 8 enters the roller press 10 evenly and stably through the stabilizing chamber 9. The roller press 10 performs high-pressure extrusion on the material under the set roller pressure and linear speed, making the material particles... The particles develop cracks, reducing their grindability. Material passing through the roller press 10 re-enters the feed end of the elevator 7 from the roller press 10 outlet. The fine powder outlet of the V-type classifier 8 is connected to a dynamic classifier 11. The dynamic classifier 11 is connected to the stabilizing chamber 9, cyclone separator 12, and ball mill 17 via pipelines. The fine powder selected in the V-type classifier 8 enters the dynamic classifier 11, which utilizes the principles of eddy current classification, inertial classification, and centrifugal classification to improve particle distribution and enhance the quality of powder selection. Then, the qualified fine powder is separated. The powder exiting the mill is fed into the subsequent ball mill 17 or the finished product silo. The coarse powder is returned to the roller press 10 for further extrusion, forming a closed-loop cycle. The volume and speed of the ball mill 17 are matched with those of the roller press 10. The material pre-treated by the roller press 10 can be further ground in the ball mill 17 to meet the finished product requirements. A circulating fan 13 is installed above the cyclone 12. A V-type classifier 8, a dynamic classifier 11, and a cyclone 12 are selected, resulting in high classification efficiency and high precision. The speed of the classifier can be adjusted according to the fineness requirements of the finished cement product. The cyclone separator 12 has parameters such as air volume. Its outlet is connected to an inclined chute 19, which in turn connects to a ball mill 17. Dust collection devices 14 are installed on the conveyor belt 6, elevator 7, V-type classifier 8, stabilizing chamber 9, roller press 10, dynamic classifier 11, cyclone separator 12, and inclined chute 19. Each dust collection device 14 includes a dust collector 15 and a dust collection fan 16. The dust collector 15 is a bag filter. The processing capacity of the dust collection device 14 is matched to the system's dust generation, ensuring that the workshop air quality meets environmental protection requirements.

[0022] As can be seen from the above technical solution, in the operation of a feeding system for energy saving and consumption reduction in cement mills, materials fall from the desulfurized gypsum silo 2, clinker silo 3, and limestone silo 4 via belt scale 5 onto conveyor belt 6. Conveyor belt 6 transports the materials to the feed end of elevator 7. The materials in elevator 7 enter V-type classifier 8 from the discharge end. The coarse powder selected in V-type classifier 8 enters the roller press 10 evenly and stably through flow stabilizing bin 9. Roller press 10 performs high-pressure extrusion on the materials under set roller pressure and linear speed, causing cracks in the material particles and reducing their grindability. The material passing through the roller press 10 re-enters the feed end of the elevator 7 from the discharge port of the roller press 10. The fine powder selected in the V-type classifier 8 enters the dynamic classifier 11, which uses the principles of eddy current classification, inertial classification and centrifugal classification to improve particle distribution and improve the quality of powder selection. Then, the qualified fine powder is separated and sent to the subsequent ball mill 17 or finished product bin, while the coarse powder is returned to the roller press 10 for further extrusion, forming a closed loop. The fine powder in the upper part of the dynamic classifier 11 enters the cyclone 12, and the fine powder enters the ball mill 17 from the discharge port of the cyclone 12 through the inclined chute 19.

[0023] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the applications disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and incorporate common knowledge or customary techniques in the art disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of the invention is indicated by the claims.

[0024] It should be understood that this utility model is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model.

Claims

1. A feeding system for energy saving and consumption reduction in cement mills, comprising a cement batching device (1) and a dust removal device (14), wherein the cement batching device (1) comprises a desulfurized gypsum silo (2), a clinker silo (3), a limestone silo (4), and a belt scale (5), wherein the belt scale (5) is provided at the bottom of the desulfurized gypsum silo (2), the clinker silo (3), and the limestone silo (4), characterized in that: The cement batching device (1) is connected to the feed end of the elevator (7) via a conveyor belt (6). The discharge end of the elevator (7) is connected to a V-type classifier (8). The coarse material outlet of the V-type classifier (8) is connected to a flow stabilizing bin (9). The flow stabilizing bin (9) is connected to a roller press (10). The discharge outlet of the roller press (10) is connected to the feed end of the elevator (7). The fine material outlet of the V-type classifier (8) is connected to a dynamic classifier (11). 1) The flow stabilizing chamber (9), cyclone (12) and ball mill (17) are connected by pipes. The discharge port of the cyclone (12) is connected to the inclined chute (19). The inclined chute (19) is connected to the ball mill (17). The conveyor belt (6), the elevator (7), the V-type classifier (8), the flow stabilizing chamber (9), the roller press (10), the dynamic classifier (11), the cyclone (12) and the inclined chute (19) are all equipped with dust removal devices (14).

2. The feeding system for energy saving and consumption reduction in cement mills according to claim 1, characterized in that: A flap (18) is installed at the connection between the conveyor belt (6) and the elevator (7).

3. The feeding system for energy saving and consumption reduction in cement mills according to claim 1, characterized in that: The dust removal device (14) includes a dust collector (15) and a dust collection fan (16).

4. The feeding system for energy saving and consumption reduction in cement mills according to claim 3, characterized in that: The dust collector (15) is a bag filter.

5. The feeding system for energy saving and consumption reduction in cement mills according to claim 1, characterized in that: A circulating fan (13) is installed above the cyclone (12).

6. The feeding system for energy saving and consumption reduction in cement mills according to claim 1, characterized in that: The roller surface of the roller press (10) is made of high-chromium cast iron or wear-resistant material through welding.

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