Quick-discharging type fragile ore roasting shaft kiln

Abstract

The present application relates to fragile ore roasting shaft kiln technical field, and disclose a kind of quick ashing fragile ore roasting shaft kiln, including shaft kiln body, one side of the shaft kiln body is fixedly installed with combustion chamber, one side of the combustion chamber is fixedly installed with burner;The present application is equipped with quantitative ashing mechanism, when limestone enters shaft kiln body, it is under the support of guide plate and precast beam, be cut off in the part of upper end inside shaft kiln body, at the same time, start burner and burn to produce hot gas, hot gas will pass through hot flue gas outlet into shaft kiln body and carry out calcination to limestone on guide plate, when reaction complete limestone will burst or shrink into powder, these powder can pass through the gap between guide plate and shaft kiln body and move downward, finally fall into hopper, when reaching the set value of material level meter, solenoid valve will be automatically opened, powder can be discharged, avoid overburning phenomenon.

Description

Technical Field

[0001] This invention relates to the field of vertical kiln technology for roasting fragile ores, specifically a rapid ash-discharging vertical kiln for roasting fragile ores. Background Technology

[0002] Fragile ores refer to ores whose shape changes significantly during the roasting process, such as magnesite and limestone. A vertical kiln (also known as a vertical kiln or bottle kiln) is a thermal equipment that continuously calcines materials using the counter-current principle. It consists of a kiln body, feeding and discharging devices, and ventilation equipment. It has the advantages of lower infrastructure investment, smaller footprint, high efficiency, low fuel consumption, and ease of mechanization and automation.

[0003] Currently, the raw material used for metallurgical lime is fine-grained limestone, which is characterized by its shape not changing significantly during calcination. In contrast, coarse-grained limestone, due to its tight intergranular bonding, has a low capacity for thermal expansion and is prone to breakage and pulverization during calcination. Pulverized limestone is prone to over-burning and being directly discharged from the kiln, while some limestone may be under-burned, affecting the calcination effect. To address this problem, we propose a rapid ash-discharging vertical kiln for roasting fragile ores. Summary of the Invention

[0004] The purpose of this invention is to provide a rapid ash-discharging vertical kiln for roasting fragile ores, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rapid ash-discharging vertical kiln for roasting fragile ores, comprising a vertical kiln body, a combustion chamber fixedly installed on one side of the vertical kiln body, a burner fixedly installed on one side of the combustion chamber, a hot flue gas outlet and an air inlet respectively opened at the top and bottom of one side of the inner wall of the combustion chamber and connected to the vertical kiln body, a cooling fan provided on one side of the vertical kiln body, a cooling pipe fixedly connected to the exhaust port of the cooling fan, one end of the cooling pipe fixedly connected to one side of the vertical kiln body, an exhaust fan provided at the top of the cooling fan, an exhaust pipe fixedly connected to the air inlet of the exhaust fan, one side of the exhaust pipe fixedly connected to one side of the vertical kiln body, and a hopper for feeding limestone provided at the top of the vertical kiln body; A quantitative ash discharge mechanism is fixedly installed on the vertical kiln body; The quantitative ash discharge mechanism includes two ash hoppers fixedly connected to the bottom of the vertical kiln body. The bottom of the ash hoppers is fixedly connected to an ash discharge pipe. An electromagnetic valve is fixedly installed on the surface of the ash discharge pipe. A level gauge is fixedly installed on one side of the electromagnetic valve. Two precast beams are fixedly installed inside the vertical kiln body. A guide plate is fixedly installed on the top of the precast beams. A distributed feeding mechanism is fixedly mounted on the vertical kiln body; A gas impact mechanism is fixedly mounted on the vertical kiln body.

[0006] Preferably, the dispersing feeding mechanism includes a feeding pipe fixedly connected to the bottom of the hopper, the bottom of the feeding pipe extending into the interior of the vertical kiln body, a distribution plate being provided at the bottom of the feeding pipe, two support frames being fixedly connected to the top of the distribution plate, one end of the support frame being fixedly connected to one side of the feeding pipe, a motor being fixedly installed at the top of the vertical kiln body, a gear being fixedly connected to the output end of the motor, and a gear ring meshing with the gear being fixedly connected to the surface of the feeding pipe.

[0007] Preferably, the gas impact mechanism includes a gas collection box fixedly connected to the top of the vertical kiln body. One side of the gas collection box is fixedly connected to an air inlet pipe via a first one-way valve. Both sides of the gas collection box are fixedly connected to exhaust pipes via second one-way valves. One end of the exhaust pipe is fixedly connected to a compression box. The bottom of the compression box is fixedly connected to two jet pipes via one-way pressure valves. The jet pipes penetrate into the interior of the vertical kiln body. A push block is provided inside the gas collection box. A push rod is fixedly connected to one side of the push block. One end of the push rod penetrates to the outside of the gas collection box and is fixedly connected to a transmission block. A transmission rod is fixedly connected to the top of the gear. A transmission groove is provided on the top of the transmission block to cooperate with the transmission rod. A preheating mechanism is provided inside the compression box.

[0008] Preferably, the preheating mechanism includes a heat-conducting plate fixedly connected to the inside of the compression box, a plurality of heat-conducting sheets fixedly connected to the top of the heat-conducting plate, and two heat-conducting rods fixedly connected to the bottom of the heat-conducting plate, the bottom of the heat-conducting rods penetrating into the interior of the vertical kiln body.

[0009] Preferably, a piston plate is fixedly connected to one side of the push block, and the piston plate is made of rubber.

[0010] Preferably, the heat-conducting plate, heat-conducting sheet, and heat-conducting rod are all made of copper.

[0011] Preferably, the bottom of the gear ring is provided with a bearing seat, and is rotatably connected to the top of the vertical kiln body through the bearing seat.

[0012] Preferably, the material distribution plate is conical, and four diversion plates are fixedly connected to its circumferential side.

[0013] Preferably, the guide plate and the precast beam are made of chromium corundum, and the guide plate has an arc-shaped design.

[0014] Preferably, a guide block is fixedly connected to the inner wall of the vertical kiln body, and both sides of the guide block are sloping.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention employs a quantitative ash discharge mechanism. When limestone enters the vertical kiln, it is isolated at the upper part of the kiln body by the support of guide plates and precast beams. Simultaneously, the burner is activated to generate hot gas, which enters the kiln body through the hot flue gas outlet to roast the limestone on the guide plate. When the limestone is fully reacted, it will burst or shrink into powder. This powder can pass through the gap between the guide plate and the kiln body and move downwards, eventually falling into the ash hopper. When the set value of the material level gauge is reached, the solenoid valve will automatically open, and the powder can be discharged to avoid over-burning. The unreacted limestone will remain above the guide plate and continue to be roasted, preventing under-burning. This invention features a dispersing feeding mechanism. When limestone falls from the hopper, it passes through the feeding pipe and lands on the distribution plate. At the same time, the motor is started, which drives the gear to rotate. The gear then drives the gear ring and the feeding pipe to rotate around the bearing. The feeding pipe, in turn, drives the support frame and the distribution plate to rotate. The centrifugal force generated during the rotation disperses the limestone, preventing it from accumulating in one place and effectively increasing the calcination rate. This invention employs a gas impact mechanism. When the gear rotates, it drives the transmission rod to rotate. As the transmission rod rotates, its surface presses against the transmission groove, causing the transmission block to move back and forth. When the transmission block moves forward, it drives the push rod, push block, and piston plate forward. At this time, the gas collection box is under negative pressure, and gas enters the gas collection box through the inlet pipe. When the transmission block moves backward, it drives the push rod, push block, and piston plate backward. At this time, the gas is compressed and enters the compression box through the exhaust pipe. This cycle continues. When the gas pressure in the compression box reaches the limit of the one-way pressure valve, the compressed gas is intermittently ejected downward from the jet pipe. The impact of the compressed gas generates vibration, promoting the falling of powder and increasing the calcination rate. This invention incorporates a preheating mechanism. During the exhaust process of the flue gas, the heat in the flue gas is transferred to the heat-conducting plate inside the compression chamber via a conduction rod. Then, the heat-conducting plate preheats the air in the compression chamber, preventing cold air from entering the vertical kiln and affecting the firing effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure in this invention; Figure 2 This is a schematic cross-sectional view of the present invention; Figure 3 This is a perspective view from the side in this invention; Figure 4 For the present invention Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a perspective view of a partial structure in this invention; Figure 6 This is a perspective view of the gas collection box in this invention. Figure 7 This is a perspective view of a partial structure of the dispersing and feeding mechanism in this invention; Figure 8 This is a perspective view of the compression box in this invention. Figure 9 This is a perspective view of the preheating mechanism in this invention.

[0017] In the diagram: 1. Vertical kiln body; 2. Combustion chamber; 3. Burner; 4. Hot flue gas outlet; 5. Air inlet; 6. Cooling fan; 7. Cooling pipe; 8. Exhaust fan; 9. Exhaust pipe; 10. Hopper; 11. Ash hopper; 12. Ash discharge pipe; 13. Solenoid valve; 14. Level gauge; 15. Precast beam; 16. Guide plate; 17. Feed pipe; 18. Distribution plate; 19. Support frame; 20. Gear; 21. Gear ring; 22. Gas collection box; 23. Air inlet pipe; 24. Exhaust pipe; 25. Compression box; 26. Jet nozzle; 27. Push block; 28. Push rod; 29. ​​Transmission block; 30. Transmission rod; 31. Transmission groove; 32. Heat-conducting plate; 33. Heat-conducting sheet; 34. Heat-conducting rod; 35. Piston plate; 36. Bearing seat; 37. Diverter plate; 38. Guide block; 39. Motor. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-9 As shown: Example 1: A rapid ash-discharging vertical kiln for roasting fragile ores includes a kiln body 1. A combustion chamber 2 is fixedly installed on one side of the kiln body 1. A burner 3 is fixedly installed on one side of the combustion chamber 2. A hot flue gas outlet 4 and an air inlet 5, which are connected to the kiln body 1, are respectively opened at the top and bottom of one side of the inner wall of the combustion chamber 2. A cooling fan 6 is provided on one side of the kiln body 1. A cooling pipe 7 is fixedly connected to the exhaust port of the cooling fan 6. One end of the cooling pipe 7 is fixedly connected to one side of the kiln body 1. An exhaust fan 8 is provided at the top of the cooling fan 6. An exhaust pipe 9 is fixedly connected to the air inlet of the exhaust fan 8. One side of the exhaust pipe 9 is fixedly connected to one side of the kiln body 1. A hopper 10 for feeding limestone is provided at the top of the kiln body 1. A quantitative ash discharge mechanism is fixedly installed on the vertical kiln body 1. The quantitative ash discharge mechanism includes two ash hoppers 11 fixedly connected to the bottom of the vertical kiln body 1. The bottom of the ash hopper 11 is fixedly connected to an ash discharge pipe 12. An electromagnetic valve 13 is fixedly installed on the surface of the ash discharge pipe 12. A material level gauge 14 is fixedly installed on one side of the electromagnetic valve 13. Two precast beams 15 are fixedly installed inside the vertical kiln body 1. A guide plate 16 is fixedly installed on the top of the precast beams 15. A decentralized feeding mechanism is fixedly installed on the vertical kiln body 1; The gas impact mechanism is fixedly installed on the vertical kiln body 1.

[0020] In this embodiment, by setting a quantitative ash discharge mechanism, when limestone enters the vertical kiln body 1, it will be isolated at the upper part of the vertical kiln body 1 under the support of the guide plate 16 and the precast beam 15. At the same time, the burner 3 is started to generate hot gas. The hot gas will enter the vertical kiln body 1 through the hot flue gas outlet 4 to roast the limestone on the guide plate 16. When the limestone is fully reacted, it will burst or shrink into powder. This powder can pass through the gap between the guide plate 16 and the vertical kiln body 1 and move downward, eventually falling into the ash hopper 11. When the set value of the material level gauge 14 is reached, the solenoid valve 13 will automatically open, and the powder can be discharged to avoid over-burning. The limestone that has not fully reacted will be above the guide plate 16 and continue to be roasted, without under-burning. Meanwhile, as the powder falls, the cooling fan 6 blows air into the vertical kiln body 1 through the cooling pipe 7. The gas carries away the heat energy in the powder and then enters the combustion chamber 2 through the air inlet 5 for combustion. At the same time, the exhaust fan 8 also exhausts the flue gas in the vertical kiln body 1 through the exhaust pipe 9, thus achieving the function of heat energy recovery.

[0021] The guide plate 16 and the precast beam 15 are made of chromium corundum, and the guide plate 16 has an arc-shaped design.

[0022] In this embodiment, by setting the guide plate 16 and the precast beam 15 to be made of chromium corundum, it can effectively resist high temperature and has strong pressure resistance, ensuring that it can effectively support the limestone.

[0023] The inner wall of the vertical kiln body 1 is fixedly connected with a guide block 38, and both sides of the guide block 38 are sloping.

[0024] In this embodiment, by setting guide blocks 38, when the powder falls, it will slide down from the slope positions on both sides of the guide blocks 38, so that the powder falls evenly into the two ash hoppers 11, thereby increasing the feeding rate.

[0025] Example 2: Based on Embodiment 1, this embodiment takes into account that if the limestone falls unevenly, it will accumulate in one area, which will prevent the hot flue gas from being effectively roasted and will also affect the roasting rate. In this application, the dispersing feeding mechanism includes a feeding pipe 17 fixedly connected to the bottom of the hopper 10. The bottom of the feeding pipe 17 extends into the interior of the vertical kiln body 1. A distribution plate 18 is provided at the bottom of the feeding pipe 17. Two support frames 19 are fixedly connected to the top of the distribution plate 18. One end of the support frame 19 is fixedly connected to one side of the feeding pipe 17. A motor 39 is fixedly installed on the top of the vertical kiln body 1. A gear 20 is fixedly connected to the output end of the motor 39. A gear ring 21 that meshes with the gear 20 is fixedly connected to the surface of the feeding pipe 17.

[0026] In this embodiment, by setting up a dispersing feeding mechanism, when limestone falls from the hopper 10, it will pass through the feeding pipe 17 and land on the distribution plate 18. At the same time, the motor 39 is started, and the motor 39 will drive the gear 20 to rotate. The gear 20 will drive the gear ring 21 and the feeding pipe 17 to rotate around the bearing. The feeding pipe 17 will drive the support frame 19 and the distribution plate 18 to rotate. The centrifugal force generated during rotation will disperse the limestone, preventing it from gathering in one place and effectively improving the calcination rate.

[0027] The bottom of the gear ring 21 is provided with a bearing seat 36, and is rotatably connected to the top of the vertical kiln body 1 through the bearing seat 36.

[0028] In this embodiment, by setting the bearing seat 36, the structure such as the gear ring 21 can be supported, and the smoothness and stability of its rotation process can be improved.

[0029] The material distribution plate 18 is conical, and four diversion plates 37 are fixedly connected to its circumferential side.

[0030] In this embodiment, by setting a flow divider plate 37, when limestone falls onto the flow divider plate, it will fall down along the conical part. The design of the flow divider plate 37 can improve the uniformity of dispersion.

[0031] Example 3: Based on Embodiment 1, this embodiment considers that the flowability of limestone after it has been powdered is relatively poor, and that the discharge rate would be affected by gravity falling alone. In this application, the gas impact mechanism includes a gas collection box 22 fixedly connected to the top of the vertical kiln body 1. One side of the gas collection box 22 is fixedly connected to an air inlet pipe 23 through a first one-way valve. Both sides of the gas collection box 22 are fixedly connected to exhaust pipes 24 through second one-way valves. One end of the exhaust pipe 24 is fixedly connected to a compression box 25. The bottom of the compression box 25 is fixedly connected to two jet pipes 26 through a one-way pressure valve. The jet pipes 26 penetrate into the interior of the vertical kiln body 1. A push block 27 is provided inside the gas collection box 22. A push rod 28 is fixedly connected to one side of the push block 27. One end of the push rod 28 penetrates into the outside of the gas collection box 22 and is fixedly connected to a transmission block 29. A transmission rod 30 is fixedly connected to the top of the gear 20. A transmission groove 31 that cooperates with the transmission rod 30 is opened on the top of the transmission block 29. A preheating mechanism is provided inside the compression box 25.

[0032] In this embodiment, a gas impact mechanism is set up. When the gear 20 rotates, it drives the transmission rod 30 to rotate. When the transmission rod 30 rotates, its surface will squeeze the transmission groove 31, causing the transmission block 29 to move back and forth. When the transmission block 29 moves forward, it will drive the push rod 28, the push block 27 and the piston plate 35 to move forward. At this time, the gas collection box 22 is under negative pressure, and the gas will enter the gas collection box 22 through the air inlet pipe 23. When the transmission block 29 moves backward, it will drive the push rod 28, the push block 27 and the piston plate 35 to move backward. At this time, the gas is compressed and will enter the compression box 25 through the exhaust pipe 24. This cycle continues. When the gas pressure in the compression box 25 reaches the limit of the one-way pressure valve, the compressed gas will be intermittently sprayed downward from the jet pipe 26. The impact of the compressed gas will generate vibration, promote the falling of powder, and increase the calcination rate. It should be noted that the first check valve is a valve that can only allow air to enter the air collection box 22, and the second check valve is a valve that can only allow air to enter the compression box 25.

[0033] The preheating mechanism includes a heat-conducting plate 32 fixedly connected inside the compression box 25. Several heat-conducting plates 33 are fixedly connected to the top of the heat-conducting plate 32, and two heat-conducting rods 34 are fixedly connected to the bottom of the heat-conducting plate 32. The bottom of the heat-conducting rods 34 penetrates into the interior of the vertical kiln body 1.

[0034] In this embodiment, by setting a preheating mechanism, during the exhaust process of flue gas, the heat in the flue gas will be transferred to the heat-conducting plate 32 inside the compression box 25 through the conduction rod, and then the air in the compression box 25 will be preheated by the heat-conducting plate 33, so as to avoid cold air entering the vertical kiln body 1 and affecting the firing effect.

[0035] A piston plate 35 is fixedly connected to one side of the push block 27. The piston plate 35 is made of rubber.

[0036] In this embodiment, by setting the piston plate 35, a sealed cavity can be formed in the air collection box 22 to facilitate the process of air intake and exhaust.

[0037] The heat-conducting plate 32, the heat-conducting sheet 33, and the heat-conducting rod 34 are all made of copper.

[0038] In this embodiment, by setting the heat-conducting plate 32, heat-conducting sheet 33 and heat-conducting rod 34 to copper, the heat energy in the flue gas can heat the gas in the compressor box 25, thereby achieving the function of waste heat recovery.

[0039] The working principle and usage process of this invention: When limestone enters the vertical kiln body 1, it is isolated at the upper part of the vertical kiln body 1 by the support of the guide plate 16 and the precast beam 15. At the same time, the burner 3 is started to generate hot gas. The hot gas enters the vertical kiln body 1 through the hot flue gas outlet 4 to roast the limestone on the guide plate 16. When the limestone is fully reacted, it will burst or shrink into powder. This powder can pass through the gap between the guide plate 16 and the vertical kiln body 1 and move downward, eventually falling into the ash hopper 11. When the material level gauge 14 reaches the set value, the solenoid valve 13 will automatically open, and the powder can be discharged to avoid over-burning. The limestone that has not fully reacted will be above the guide plate 16 and continue to be roasted, without under-burning. When limestone falls from hopper 10, it passes through feed pipe 17 and lands on distribution plate 18. At the same time, motor 39 is started, which drives gear 20 to rotate. Gear 20 then drives gear ring 21 and feed pipe 17 to rotate around the bearing. Feed pipe 17 drives support frame 19 and distribution plate 18 to rotate. The centrifugal force generated during rotation disperses the limestone, preventing it from accumulating in one place and effectively increasing the calcination rate. When gear 20 rotates, it drives transmission rod 30 to rotate. As transmission rod 30 rotates, its surface presses against transmission groove 31, causing transmission block 29 to move back and forth. When transmission block 29 moves forward, it drives push rod 28, push block 27, and piston plate 35 forward. At this time, the air collection box 22 is under negative pressure, and gas enters the air collection box 22 through intake pipe 23. When transmission block 29 moves backward, it drives push rod 28, push block 27, and piston plate 35 backward. At this time, the gas is compressed and... The exhaust pipe 24 enters the compression box 25 and circulates sequentially. When the air pressure in the compression box 25 reaches the limit of the one-way pressure valve, the compressed gas will be intermittently sprayed downward from the jet pipe 26. The impact of the compressed gas generates vibration, which promotes the falling of the powder and increases the roasting rate. During the exhaust process, the heat in the flue gas will be transferred to the heat conduction plate 32 inside the compression box 25 through the conduction rod. Then, the heat conduction plate 33 will preheat the air in the compression box 25 to prevent cold air from entering the vertical kiln body 1 and affecting the roasting effect.

[0040] The structure used in this application can be additionally fitted with protective measures that are common knowledge in the field of this technology under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, which are commonly used by those skilled in the art.

[0041] It should be noted that the burner 3, cooling fan 6, exhaust fan 8, solenoid valve 13 and level gauge 14 are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0042] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0043] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0044] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-dispatch friable ore roasting shaft kiln comprising a shaft kiln body (1), characterized in that: A combustion chamber (2) is fixedly installed on one side of the vertical kiln body (1), and a burner (3) is fixedly installed on one side of the combustion chamber (2). A hot flue gas outlet (4) and an air inlet (5) connected to the vertical kiln body (1) are respectively opened on the top and bottom of one side of the inner wall of the combustion chamber (2). A cooling fan (6) is provided on one side of the vertical kiln body (1). A cooling pipe (7) is fixedly connected to the exhaust port of the cooling fan (6). One end of the cooling pipe (7) is fixedly connected to one side of the vertical kiln body (1). A smoke exhaust fan (8) is provided at the top of the cooling fan (6). A smoke exhaust pipe (9) is fixedly connected to the air inlet of the smoke exhaust fan (8). One side of the smoke exhaust pipe (9) is fixedly connected to one side of the vertical kiln body (1). A hopper (10) for feeding limestone is provided at the top of the vertical kiln body (1). A quantitative ash discharge mechanism is fixedly installed on the vertical kiln body (1); The quantitative ash discharge mechanism includes two ash hoppers (11) fixedly connected to the bottom of the vertical kiln body (1). The bottom of the ash hopper (11) is fixedly connected to an ash discharge pipe (12). An electromagnetic valve (13) is fixedly installed on the surface of the ash discharge pipe (12). A level gauge (14) is fixedly installed on one side of the electromagnetic valve (13). Two precast beams (15) are fixedly installed inside the vertical kiln body (1). A guide plate (16) is fixedly installed on the top of the precast beams (15). A distributed feeding mechanism is fixedly mounted on the vertical kiln body (1); Gas impact mechanism, which is fixedly installed on the vertical kiln body (1).

2. The rapid ash-discharging vertical kiln for roasting fragile ores according to claim 1, characterized in that: The dispersing mechanism includes a feeding pipe (17) fixedly connected to the bottom of the hopper (10). The bottom of the feeding pipe (17) extends into the interior of the vertical kiln body (1). A distribution plate (18) is provided at the bottom of the feeding pipe (17). Two support frames (19) are fixedly connected to the top of the distribution plate (18). One end of the support frame (19) is fixedly connected to one side of the feeding pipe (17). A motor (39) is fixedly installed on the top of the vertical kiln body (1). A gear (20) is fixedly connected to the output end of the motor (39). A gear ring (21) that meshes with the gear (20) is fixedly connected to the surface of the feeding pipe (17).

3. The rapid ash-discharging vertical kiln for roasting fragile ores according to claim 2, characterized in that: The gas impact mechanism includes a gas collection box (22) fixedly connected to the top of the vertical kiln body (1). One side of the gas collection box (22) is fixedly connected to an air inlet pipe (23) via a first one-way valve. Both sides of the gas collection box (22) are fixedly connected to exhaust pipes (24) via second one-way valves. One end of the exhaust pipe (24) is fixedly connected to a compression box (25). The bottom of the compression box (25) is fixedly connected to two jet pipes (26) via one-way pressure valves. The jet pipes (26) penetrate into the vertical kiln body (1). Inside the gas collection box (22), a push block (27) is provided. A push rod (28) is fixedly connected to one side of the push block (27). One end of the push rod (28) extends through to the outside of the gas collection box (22) and is fixedly connected to a transmission block (29). A transmission rod (30) is fixedly connected to the top of the gear (20). A transmission groove (31) is opened on the top of the transmission block (29) to cooperate with the transmission rod (30). A preheating mechanism is provided inside the compression box (25).

4. A rapid ash-discharging vertical kiln for roasting fragile ores according to claim 3, characterized in that: The preheating mechanism includes a heat-conducting plate (32) fixedly connected inside the compression box (25). Several heat-conducting plates (33) are fixedly connected to the top of the heat-conducting plate (32), and two heat-conducting rods (34) are fixedly connected to the bottom of the heat-conducting plate (32). The bottom of the heat-conducting rods (34) penetrates into the interior of the vertical kiln body (1).

5. A rapid ash-discharging vertical kiln for roasting fragile ores according to claim 4, characterized in that: A piston plate (35) is fixedly connected to one side of the push block (27), and the piston plate (35) is made of rubber.

6. A rapid ash-discharging vertical kiln for roasting fragile ores according to claim 4, characterized in that: The heat-conducting plate (32), heat-conducting sheet (33) and heat-conducting rod (34) are all made of copper.

7. A rapid ash-discharging vertical kiln for roasting fragile ores according to claim 2, characterized in that: The bottom of the gear ring (21) is provided with a bearing seat (36), and is rotatably connected to the top of the vertical kiln body (1) through the bearing seat (36).

8. A rapid ash-discharging vertical kiln for roasting fragile ores according to claim 2, characterized in that: The material distribution plate (18) is conical, and four diversion plates (37) are fixedly connected to its circumferential side.

9. A rapid ash-discharging vertical kiln for roasting fragile ores according to claim 1, characterized in that: The guide plate (16) and the precast beam (15) are made of chromium corundum, and the guide plate (16) has an arc-shaped design.

10. A rapid ash-discharging vertical kiln for roasting fragile ores according to claim 1, characterized in that: The inner wall of the vertical kiln body (1) is fixedly connected with a guide block (38), and both sides of the guide block (38) are sloping.

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