Phosphorus ore pellet drying and roasting integrated equipment with tail gas utilization

Abstract

The utility model discloses a kind of phosphorus ore pellet drying roasting integrated equipment with tail gas utilization, including drying cabinet and roasting box;Tail gas treatment mechanism, the tail gas treatment mechanism includes air suction pipe, air suction subassembly, filter box, filter plate, gas supply pipe, air outlet pipe;The air suction pipe both ends are respectively fixedly connected in side wall middle and filter box side wall, the air suction subassembly is fixedly arranged in air suction pipe one end inside, the filter box is fixedly connected in roasting box top, the filter plate is insertedly fixed in filter box, the gas supply pipe both ends are respectively fixedly connected in filter box other side and air outlet pipe middle side wall, the air outlet pipe both ends are respectively fixedly connected in drying cabinet both sides.The utility model makes full use of tail gas generated by roasting to reduce energy consumption by drying pellet, and filter toxic components and dust in tail gas, avoid harming environment, avoid that sphere is not dried completely directly from discharge pipe slide out, can agitate sphere at drying net pipe bottom simultaneously, avoid that sphere is jammed.

Description

Technical Field

[0001] This utility model relates to the field of phosphate rock processing technology, specifically to an integrated equipment for drying and roasting phosphate powder ore pellets with tail gas utilization. Background Technology

[0002] Before being used in subsequent phosphoric acid production, phosphate rock typically needs to be granulated into green pellets of a specific particle size. To ensure the strength and chemical reactivity of the pellets during transportation and smelting, the green pellets must be dried and roasted. This process aims to completely remove the physical and crystalline water from the pellets, while simultaneously using high temperatures to complete necessary physicochemical reactions, such as improving mechanical strength, reducing pulverization rate, optimizing pore structure, and creating favorable conditions for subsequent acid hydrolysis.

[0003] In traditional production, drying and roasting are usually carried out using two separate sets of equipment. The drying equipment needs to be equipped with a separate heating source, while the roasting equipment generates a large amount of high-temperature exhaust gas during operation. Because these exhaust gases contain dust and harmful gases, they are often directly discharged after simple treatment, which not only wastes a large amount of residual heat in the exhaust gas, but also increases energy consumption and environmental pressure. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated drying and roasting equipment for phosphate rock pellets with tail gas utilization, so as to solve the problems mentioned in the background art. To solve the above technical problems, this utility model is achieved through the following technical solution: This utility model relates to an integrated drying and roasting equipment for phosphate rock pellets with tail gas utilization, comprising: A drying oven, with a roasting oven fixedly connected to one side of the drying oven; An exhaust gas treatment mechanism, comprising an intake pipe, an intake assembly, a filter box, a filter plate, an air supply pipe, and an exhaust pipe; One end of the suction pipe is fixedly connected to the middle of the side wall of the roasting box. The suction assembly is fixedly installed inside the suction pipe. The filter box is fixedly connected to the top of the roasting box. The side wall of the filter box and the other end of the suction pipe are fixedly connected. Multiple filter plates are inserted and fixedly installed inside the filter box. A first handle is fixedly connected to the top of the filter plate. The two ends of the air supply pipe are fixedly connected to the other side of the filter box and the middle side wall of the air outlet pipe. The two ends of the air outlet pipe are fixedly connected to both sides of the drying box.

[0005] Furthermore, the intake assembly includes a cross plate, a first motor, and fan blades; The cross plate is fixedly connected to the inner wall of the end of the air intake pipe, the first motor is fixedly connected to one side of the cross plate, and the fan blade is fixedly connected to the power output end of the first motor.

[0006] Furthermore, a feed pipe is fixedly connected to the top of the side wall of the drying chamber, and a discharge pipe is fixedly connected to the other side of the drying chamber. The end of the discharge pipe extends into the roasting chamber, and a drying mesh pipe is fixedly connected to the top of the discharge pipe.

[0007] Furthermore, a combustion chamber is provided at the bottom of the roasting box, an annular plate is fixedly provided on the side wall of the roasting box, a roasting box is slidably connected to the surface of the annular plate, and a door is rotatably connected to the side wall of the roasting box.

[0008] Furthermore, it also includes a feeding mechanism, which includes a circular tube, a second motor, a fan-shaped opening, and a fan-shaped column; The circular tube is fixedly connected to the bottom of the drying mesh tube, the second motor is fixedly connected to the bottom of the circular tube, the fan-shaped opening is opened on one side of the bottom of the circular tube, the fan-shaped column is fixedly connected to the power output end of the second motor, and the size of the fan-shaped column is the same as the size of the fan-shaped opening.

[0009] Furthermore, two arch-breaking rods are fixedly connected to the top of the fan-shaped column.

[0010] Furthermore, the side wall of the arch-breaking rod is fixedly connected with a side rod, and there are multiple side rods.

[0011] This utility model has the following beneficial effects: This invention integrates a drying chamber and a roasting chamber into one unit. The pellets in the roasting chamber are roasted by heating with upper and lower heating plates. The exhaust gas generated during roasting is drawn out by the suction component and enters the filter chamber through the suction pipe. After being filtered by multiple filter plates to remove toxic gases and dust, the exhaust gas enters the outlet pipe through the air supply pipe. Hot air enters from both sides of the drying chamber through the outlet pipe to dry the pellets in the drying mesh tube. This fully utilizes the exhaust gas generated during roasting to dry the pellets, reducing energy consumption, and filters out toxic components and dust in the exhaust gas to avoid harming the environment. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1 A schematic diagram of the structure of part A in the diagram; Figure 3 This is a schematic diagram of the feeding mechanism of this utility model.

[0014] The attached diagram lists the components represented by each number as follows: 110. Drying oven; 120. Calcination oven; 210. Intake pipe; 220. Intake assembly; 221. Cross plate; 222. First motor; 223. Fan blade; 230. Filter box; 240. Filter plate; 241. First handle; 250. Air supply pipe; 260. Air outlet pipe; 310. Feed pipe; 320. Drying mesh pipe; 330. Discharge pipe; 410. Combustion chamber; 420. Ring plate; 430. Calcination box; 440. Box door; 500, feeding mechanism; 510, round tube; 520, second motor; 530, fan-shaped opening; 540, fan-shaped column; 550, arch-breaking rod; 560, side rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0017] Please see Figure 1-3 As shown, this utility model is an integrated drying and roasting equipment for phosphate rock pellets with tail gas utilization, comprising: Drying box 110, with roasting box 120 fixedly connected to one side of drying box 110; The exhaust gas treatment mechanism includes an intake pipe 210, an intake assembly 220, a filter box 230, a filter plate 240, an air supply pipe 250, and an exhaust pipe 260. One end of the suction pipe 210 is fixedly connected to the middle of the side wall of the roasting box 120. The suction assembly 220 is fixedly installed inside one end of the suction pipe 210. The filter box 230 is fixedly connected to the top of the roasting box 120. The side wall of the filter box 230 and the other end of the suction pipe 210 are fixedly connected. Multiple filter plates 240 are respectively inserted and fixed inside the filter box 230. The top of the filter plate 240 is fixedly connected to the first handle 241. The two ends of the air supply pipe 250 are respectively fixedly connected to the other side of the filter box 230 and the middle side wall of the air outlet pipe 260. The two ends of the air outlet pipe 260 are respectively fixedly connected to the drying oven. On both sides of the drying chamber 110, the drying chamber 110 and the calcination chamber 120 are integrated into one unit. The exhaust gas generated during calcination in the calcination chamber 120 is drawn out through the suction component 220 and enters the filter chamber 230 through the suction pipe 210. After being filtered by multiple filter plates 240, the exhaust gas enters the outlet pipe 260 through the air supply pipe 250, allowing hot air to enter from both sides of the drying chamber 110 through the outlet pipe 260 to dry the spheres. This fully utilizes the exhaust gas generated during calcination to dry the spheres, reducing energy consumption, and filters out toxic components and dust in the exhaust gas to avoid harming the environment. The intake assembly 220 includes a cross plate 221, a first motor 222, and a fan blade 223; The cross plate 221 is fixedly connected to the inner wall of the end of the suction pipe 210. The first motor 222 is fixedly connected to one side of the cross plate 221. The fan blade 223 is fixedly connected to the power output end of the first motor 222. The fan blade 223 is driven to rotate by the first motor 222, so that the fan blade 223 rotates to suck out the exhaust gas generated in the roasting box 120. A feed pipe 310 is fixedly connected to the top of the side wall of the drying oven 110, and a discharge pipe 330 is fixedly connected to the other side of the drying oven 110. The end of the discharge pipe 330 extends into the roasting box 120, and a drying mesh pipe 320 is fixedly connected to the top of the discharge pipe 330. Pellets are added into the drying oven 110 through the feed pipe 310. The pellets fall into the drying mesh pipe 320 and are dried before sliding out from the discharge pipe 330 into the roasting box 120. The bottom of the roasting box 120 is provided with a combustion chamber 410, and a ring plate 420 is fixedly provided on the side wall of the roasting box 120. A roasting box 430 is slidably connected to the surface of the ring plate 420. A box door 440 is rotatably connected to the side wall of the roasting box 120. Combustion material is added into the combustion chamber 410 by opening the box door 440. The bottom of the roasting box 430 has a mesh structure, which can directly transfer heat to the pellets. Working principle: First, the upper heating plate 410 and lower heating plate 420 heat the air to generate hot air. Then, the first motor 222 starts, driving the fan blades 223 to rotate. This causes the hot air to be drawn out through the suction assembly 220 and enter the filter box 230 through the suction pipe 210. Multiple filter plates 240 filter the toxic gases and dust from the exhaust gas. The hot air then enters the outlet pipe 260 through the air supply pipe 250, allowing it to enter from both sides of the drying chamber 110 through the outlet pipe 260. Finally, the hot air flows into the drying chamber 110 through the feed pipe 310. Pellet is added to the 10-cell drying chamber. The pellet falls into the drying mesh tube 320 and is dried by the hot air sprayed from the exhaust pipe 260. It then slides out from the discharge pipe 330 into the roasting box 120 and falls into the roasting box 430 for roasting. After roasting, the roasting box 430 is pulled out by pulling the second handle 431 to remove the pellet. The drying box 110 and the roasting box 120 are integrated into one unit. The exhaust gas generated during roasting is fully utilized to dry the pellet, reducing energy consumption. The toxic components and dust in the exhaust gas are filtered to avoid harming the environment.

[0018] Please see Figure 1-3 As shown, this embodiment, based on the above embodiment, further includes: The feeding mechanism 500 includes a round tube 510, a second motor 520, a sector-shaped opening 530, and a sector-shaped column 540. The round tube 510 is fixedly connected to the bottom of the drying mesh tube 320. The second motor 520 is fixedly connected to the bottom of the round tube 510. The fan-shaped opening 530 is opened on one side of the bottom of the round tube 510. The fan-shaped column 540 is fixedly connected to the power output end of the second motor 520. The size of the fan-shaped column 540 is the same as that of the fan-shaped opening 530. Under normal circumstances, the fan-shaped column 540 blocks the fan-shaped opening 530 to prevent the balls from sliding out of the discharge tube 330 directly before they are completely dried. After drying, the second motor 520 drives the fan-shaped column 540 to rotate, so that the fan-shaped opening 530 opens and discharges the balls that have been dried for a longer time at the bottom of the drying mesh tube 320. The top of the fan-shaped column 540 is fixedly connected to the arch-breaking rod 550. There are two arch-breaking rods 550. The fan-shaped column 540 drives the arch-breaking rod 550 to move along the drying mesh tube 320, stirring the balls at the bottom of the drying mesh tube 320 to prevent the balls from clogging. The side wall of the arch-breaking rod 550 is fixedly connected to a side rod 560. There are multiple side rods 560. The arch-breaking rod 550 drives the side rods 560 to move, turning the balls in the drying mesh tube 320 so that the balls are dried evenly. Working principle: Under normal circumstances, the sector column 540 blocks the sector opening 530 to prevent the balls from sliding out of the discharge pipe 330 without being fully dried. After drying, the second motor 520 drives the sector column 540 to rotate, causing the sector opening 530 to open and discharge the balls that have been dried for a longer time at the bottom of the drying mesh tube 320. The sector column 540 drives the anti-arching rod 550 to move along the drying mesh tube 320, stirring the balls at the bottom of the drying mesh tube 320 to prevent them from clogging. At the same time, the anti-arching rod 550 drives the side rod 560 to move, turning the balls in the drying mesh tube 320 so that the balls are dried evenly.

[0019] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An integrated drying and roasting equipment for phosphate rock pellets with tail gas utilization, characterized in that, include: A drying oven (110) is provided, and a roasting oven (120) is fixedly connected to one side of the drying oven (110). The exhaust gas treatment mechanism includes an intake pipe (210), an intake assembly (220), a filter box (230), a filter plate (240), an air supply pipe (250), and an exhaust pipe (260). One end of the suction pipe (210) is fixedly connected to the middle of the side wall of the roasting box (120). The suction assembly (220) is fixedly installed inside one end of the suction pipe (210). The filter box (230) is fixedly connected to the top of the roasting box (120). The side wall of the filter box (230) and the other end of the suction pipe (210) are fixedly connected. Multiple filter plates (240) are respectively inserted and fixed inside the filter box (230). The top of the filter plate (240) is fixedly connected to a first handle (241). The two ends of the air supply pipe (250) are respectively fixedly connected to the other side of the filter box (230) and the middle side wall of the air outlet pipe (260). The two ends of the air outlet pipe (260) are respectively fixedly connected to both sides of the drying box (110).

2. The integrated drying and roasting equipment for phosphate rock pellets with tail gas utilization as described in claim 1, characterized in that: The intake assembly (220) includes a cross plate (221), a first motor (222), and a fan blade (223); The cross plate (221) is fixedly connected to the inner wall of the end of the air intake pipe (210), the first motor (222) is fixedly connected to one side of the cross plate (221), and the fan blade (223) is fixedly connected to the power output end of the first motor (222).

3. The integrated drying and roasting equipment for phosphate rock pellets with tail gas utilization according to claim 1, characterized in that: A feed pipe (310) is fixedly connected to the top of the side wall of the drying box (110), and a discharge pipe (330) is fixedly connected to the other side of the drying box (110). The end of the discharge pipe (330) extends into the roasting box (120), and a drying mesh pipe (320) is fixedly connected to the top of the discharge pipe (330).

4. The integrated drying and roasting equipment for phosphate rock pellets with tail gas utilization according to claim 1, characterized in that: The bottom of the roasting box (120) is provided with a combustion chamber (410), the side wall of the roasting box (120) is fixedly provided with a ring plate (420), the surface of the ring plate (420) is slidably connected with a roasting box (430), and the side wall of the roasting box (120) is rotatably connected with a box door (440).

5. The integrated drying and roasting equipment for phosphate rock pellets with tail gas utilization according to claim 3, characterized in that: It also includes a feeding mechanism (500), which includes a round tube (510), a second motor (520), a fan-shaped opening (530), and a fan-shaped column (540); The circular tube (510) is fixedly connected to the bottom of the drying mesh tube (320), the second motor (520) is fixedly connected to the bottom of the circular tube (510), the fan-shaped opening (530) is opened on one side of the bottom of the circular tube (510), and the fan-shaped column (540) is fixedly connected to the power output end of the second motor (520). The size of the fan-shaped column (540) is the same as the size of the fan-shaped opening (530).

6. The integrated drying and roasting equipment for phosphate rock pellets with tail gas utilization according to claim 5, characterized in that: The top of the fan-shaped column (540) is fixedly connected to an arch-breaking rod (550), and there are two arch-breaking rods (550).

7. The integrated drying and roasting equipment for phosphate rock pellets with tail gas utilization according to claim 6, characterized in that: The side wall of the arch-breaking rod (550) is fixedly connected to a side rod (560), and there are multiple side rods (560).

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