Multi-stage crushing screen for rare earth waste recovery roaster

Abstract

The utility model discloses a kind of multistage crushing screens for rare earth waste recovery roaster, it relates to rare earth metallurgy and waste recovery processing technical field, including box and crushing structure, the crushing structure includes two first rotary rods that are through and rotationally connected in the lateral wall of box, two first rotary rods are sheathed with shearing crushing roller, the lateral wall of box is through and rotationally connected with second rotary rod, second rotary rod is sheathed with hammer crusher roller, the lateral wall of box is through and rotationally connected with two third rotary rods, two third rotary rods are sheathed with roller, the lateral wall of box is fixedly connected with connecting rod. By setting crushing structure, it can be aimed at complex composition, form various rare earth waste, and carry out multistage, progressive crushing treatment, multistage crushing can be gradually adjusted crushing intensity and mode according to waste characteristics, ensure that waste is treated into uniform and meet subsequent process requirement granularity.

Description

Technical Field

[0001] This utility model relates to the field of rare earth metallurgy and waste recycling technology, and in particular to a multi-stage crushing screen for a rare earth waste recycling roasting furnace. Background Technology

[0002] In today's era of rapid technological development, rare earth elements, due to their unique physical and chemical properties, are widely used in many high-tech fields such as electronics, new energy, and aerospace, becoming an indispensable strategic resource. However, the over-exploitation of rare earth resources has not only led to a dwindling resource reserve but has also caused serious environmental problems. Therefore, the recycling of rare earth waste has become an important way to alleviate resource pressure and reduce environmental pollution.

[0003] In the rare earth waste recycling system, crushing and screening, as a core pretreatment step, has a significant impact on subsequent processes. Rare earth waste has a complex composition and diverse forms; without multi-stage crushing, the particle size of the waste is difficult to uniform. This leads to uneven heating and inconsistent contact areas during the roasting process, preventing the waste from fully reacting and significantly reducing the leaching rate of rare earth elements. At the same time, waste that has not undergone effective multi-stage crushing is difficult to accurately classify through screening, and impurities cannot be fully separated, directly affecting the purity of the raw materials extracted later. Utility Model Content

[0004] The purpose of this utility model is to solve the problems in the background technology by proposing a multi-stage crushing screen for rare earth waste recycling roasting furnace.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-stage crushing screen for a rare earth waste recycling roasting furnace includes a housing and a crushing structure. The crushing structure includes two first rotating rods that penetrate and are rotatably connected to the side wall of the housing. Shearing and crushing rollers are fitted on the two first rotating rods. A second rotating rod that penetrates and is rotatably connected to the side wall of the housing is fitted on the second rotating rod. Two third rotating rods that penetrate and are rotatably connected to the side wall of the housing are fitted with rollers. A connecting rod is fixedly connected to the side wall of the housing. A three-stage screening structure is provided at the end of the connecting rod away from the housing.

[0007] Preferably, the three-stage screening structure includes a feed hopper fixedly connected to one end of a connecting rod, four vibrating motors fixedly installed on the top of the feed hopper, a fixing rod fixedly connected to the top of the four vibrating motors, and a three-stage screen fixedly connected to the side wall of the fixing rod.

[0008] Preferably, a roasting furnace is fixedly connected to the bottom of the feed hopper, a discharge pipe is welded to the bottom of the roasting furnace, and a valve is installed on the side wall of the discharge pipe.

[0009] Preferably, the two first rotating rods are rotatably connected by gears, the second rotating rod is rotatably connected to the first rotating rod by a belt, the two third rotating rods are rotatably connected by gears, the second rotating rod is rotatably connected to the third rotating rod by a belt, and a motor is fixedly installed on the side wall of the housing, the output end of the motor is rotatably connected to the second rotating rod by a belt.

[0010] Preferably, each of the four vibration motors is equipped with an independent control switch, which can be turned on or off individually to adjust the vibration intensity of the three-stage screen. The three-stage screen has a multi-layer screen structure with three screen layers arranged from top to bottom, and the screen hole size of the screen layers decreases step by step.

[0011] Preferably, a protective cover is fixedly connected to the side wall of the housing, and one end of each of the two first rotating rods, the first rotating rod, and the two third rotating rods, along with the motor, are all inside the protective cover.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, through its crushing structure, enables multi-stage, progressive crushing of rare earth waste with complex compositions and diverse forms. The multi-stage crushing allows for gradual adjustment of crushing intensity and method according to the waste characteristics, ensuring the waste is processed into uniform particle sizes that meet the requirements of subsequent processes. Uniform waste particle size allows for sufficient contact between the material and the heat source and reaction medium during roasting, avoiding localized overheating or incomplete reaction, thereby significantly improving the leaching rate of rare earth elements, effectively enhancing the recovery efficiency of rare earth resources, and contributing to improved resource utilization.

[0014] 2. This utility model constructs a precise and flexible screening system by setting up a three-stage screening structure and using an independent control switch for the vibration motor to adjust the vibration intensity. The multi-layered screen surface with progressively smaller screen holes allows for fine grading and screening of waste materials after multi-stage crushing. From large particles of impurities to tiny unqualified materials, everything can be effectively separated, greatly ensuring the purity of raw materials entering subsequent rare earth extraction processes. High-purity raw materials not only improve the quality of rare earth products but also reduce impurities during the extraction process, optimize the entire rare earth waste recycling process, reduce production costs, and help the rare earth waste recycling industry develop towards high efficiency and high quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a multi-stage crushing screen for a rare earth waste recycling roasting furnace proposed in this utility model;

[0016] Figure 2This is a schematic diagram of the internal cross-sectional structure of the box of a multi-stage crushing screen for a rare earth waste recycling roasting furnace proposed in this utility model.

[0017] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the protective cover of a multi-stage crushing screen for a rare earth waste recycling roasting furnace proposed in this utility model.

[0018] Figure 4 This is a schematic diagram of the left-side structure of a multi-stage crushing screen for a rare earth waste recycling roasting furnace proposed in this utility model.

[0019] Figure 5 for Figure 4 A magnified structural diagram at point A.

[0020] In the diagram: 1. Box body, 2. First rotating rod, 3. Shearing and crushing roller, 4. Second rotating rod, 5. Hammer crushing roller, 6. Third rotating rod, 7. Roller, 8. Motor, 9. Connecting rod, 10. Protective cover, 11. Feed hopper, 12. Vibrating motor, 13. Fixed rod, 14. Three-stage screen, 15. Roasting furnace, 16. Discharge pipe, 17. Valve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-5 A multi-stage crushing screen for a rare earth waste recycling roasting furnace includes a box body 1 and a crushing structure. The crushing structure includes two first rotating rods 2 that pass through and are rotatably connected to the side wall of the box body 1. Shearing and crushing rollers 3 are sleeved on the two first rotating rods 2. The shearing and crushing rollers 3 are inside the box body 1. By rotating the two rollers relative to each other, the rare earth waste is sheared and crushed using the roller surface cross structure.

[0023] A second rotating rod 4 is rotatably connected through the side wall of the box 1. A hammer crushing roller 5 is sleeved on the second rotating rod 4. The hammer blades on the hammer crushing roller 5 can crush the waste material by hammering. The hammer crushing roller 5 is inside the box 1. Two third rotating rods 6 are rotatably connected through the side wall of the box 1. Rollers 7 are sleeved on the two third rotating rods 6. The rollers 7 are inside the box 1. The rollers 7 further refine the waste particles by mutual squeezing and friction. A connecting rod 9 is fixedly connected to the side wall of the box 1. A three-stage screening structure is set at the end of the connecting rod 9 away from the box 1 for classifying and screening the crushed rare earth waste according to different particle sizes.

[0024] The three-stage screening structure includes a feed hopper 11 fixedly connected to one end of the connecting rod 9. The feed hopper 11 is used to receive the waste material after screening and crushing. Four vibrating motors 12 are fixedly installed on the top of the feed hopper 11. The vibrating motors 12 provide vibration power to the three-stage screen 14. The top of the four vibrating motors 12 is fixedly connected to the fixing rods 13. The fixing rods 13 are used to stably support the three-stage screen 14. The three-stage screen 14 is fixedly connected to the side wall of the fixing rods 13. The three-stage screen 14 can perform multi-layer screening of the incoming waste material.

[0025] A roasting furnace 15 is fixedly connected to the bottom of the feed hopper 11. The roasting furnace 15 is used to roast the screened rare earth waste at high temperature. A discharge pipe 16 is welded to the bottom of the roasting furnace 15. The discharge pipe 16 is used to discharge the roasted material. A valve 17 is installed on the side wall of the discharge pipe 16. The valve 17 can control the discharge of the material.

[0026] The two first rotating rods 2 are connected by gears to achieve synchronous reverse rotation. The second rotating rod 4 is connected to the first rotating rod 2 by a belt to effectively transmit power. The two third rotating rods 6 are connected by gears to achieve synchronous reverse rotation. The second rotating rod 4 is connected to the third rotating rod 6 by a belt to transmit power. A motor 8 is fixedly installed on the side wall of the box 1. The motor 8 serves as the power source for the entire crushing structure. Its output end is connected to the second rotating rod 4 by a belt to transmit power to each rotating component.

[0027] Each of the four vibration motors 12 is equipped with an independent control switch. The motor can be turned on or off individually by the control switch, so as to adjust the vibration intensity of the three-stage screen 14 to meet the screening requirements of waste of different particle sizes. The three-stage screen 14 has a multi-layer screen structure with three screen layers arranged from top to bottom. The screen hole size of the screen layer decreases step by step, thereby realizing fine classification and screening of waste.

[0028] A protective cover 10 is fixedly connected to the side wall of the housing 1. One end of the two first rotating rods 2, the first rotating rod 2 and the two third rotating rods 6 and the motor 8 are all inside the protective cover 10. The protective cover 10 can effectively prevent operators from accidentally contacting the rotating parts, while reducing the entry of dust and debris, and ensuring the stable operation of the equipment.

[0029] The detailed working process of this utility model is as follows:

[0030] Rare earth waste enters the equipment through the feed inlet at the top of the housing 1. The motor 8 starts and drives the second rotating rod 4 to rotate via a belt. The second rotating rod 4 drives the first rotating rod 2 to rotate via a belt drive. The two first rotating rods 2 rotate synchronously in opposite directions through gears. The shearing and crushing roller 3 rotates with the first rotating rod 2. The staggered shearing teeth on its roller surface perform preliminary shearing on large pieces of waste, crushing them into medium-sized particles.

[0031] The second rotating rod 4 drives the hammer crusher roller 5 to rotate. The waste material that has undergone primary crushing falls into the area of ​​the hammer crusher roller 5 and is further refined into smaller particles by being hammered by the high-speed rotating hammer blades. The second rotating rod 4 drives the third rotating rod 6 to rotate via belt drive, and the two third rotating rods 6 rotate synchronously in opposite directions via gears. The roller 7 rotates with the third rotating rod 6, and its surface squeezes and grinds the falling waste material to form uniform and fine particles.

[0032] The crushed waste falls onto the three-stage screen 14. Four vibrating motors 12 are turned on, transmitting vibration to the three-stage screen 14 through the fixed rod 13. The three-stage screen 14 has multiple layers of screens (separating the waste according to particle size: the uppermost screen intercepts large particles, the middle and upper screens screen medium-sized particles, and the bottom screen collects fine particles; large particles that do not pass through the screens can be returned to the feed inlet for re-crushing).

[0033] The qualified particles after screening enter the roasting furnace 15 through the feed hopper 11. The roasting furnace 15 roasts the waste material at high temperature, causing it to undergo physical or chemical reactions, which facilitates the subsequent extraction of rare earth elements. The roasted material is discharged through the discharge pipe 16, and the discharge speed and stop are controlled by the valve 17.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A multi-stage crushing screen for a rare earth waste recycling roasting furnace, comprising a housing (1) and a crushing structure, characterized in that: The crushing structure includes two first rotating rods (2) that penetrate and are rotatably connected to the side wall of the box (1). Shearing crushing rollers (3) are sleeved on the two first rotating rods (2). A second rotating rod (4) penetrates and is rotatably connected to the side wall of the box (1). A hammer crushing roller (5) is sleeved on the second rotating rod (4). Two third rotating rods (6) penetrate and are rotatably connected to the side wall of the box (1). Rollers (7) are sleeved on the two third rotating rods (6). A connecting rod (9) is fixedly connected to the side wall of the box (1). A three-stage screening structure is provided at the end of the connecting rod (9) away from the box (1).

2. The multi-stage crushing screen for a rare earth waste recycling roasting furnace according to claim 1, characterized in that: The three-stage screening structure includes a feed hopper (11) fixedly connected to one end of a connecting rod (9). Four vibrating motors (12) are fixedly installed on the top of the feed hopper (11). A fixing rod (13) is fixedly connected to the top of the four vibrating motors (12). A three-stage screen (14) is fixedly connected to the side wall of the fixing rod (13).

3. The multi-stage crushing screen for a rare earth waste recycling roasting furnace according to claim 2, characterized in that: The bottom of the feed hopper (11) is fixedly connected to a roasting furnace (15), and the bottom of the roasting furnace (15) is welded with a discharge pipe (16), and a valve (17) is installed on the side wall of the discharge pipe (16).

4. The multi-stage crushing screen for a rare earth waste recycling roasting furnace according to claim 3, characterized in that: The two first rotating rods (2) are rotatably connected by gears, the second rotating rod (4) is rotatably connected to the first rotating rod (2) by a belt, the two third rotating rods (6) are rotatably connected by gears, the second rotating rod (4) is rotatably connected to the third rotating rod (6) by a belt, and a motor (8) is fixedly installed on the side wall of the housing (1), and the output end of the motor (8) is rotatably connected to the second rotating rod (4) by a belt.

5. The multi-stage crushing screen for a rare earth waste recycling roasting furnace according to claim 4, characterized in that: Each of the four vibration motors (12) is equipped with an independent control switch, which can be turned on or off individually to adjust the vibration intensity of the three-stage sieve (14). The three-stage sieve (14) has a multi-layer sieve structure with three sieve layers arranged from top to bottom, and the size of the sieve holes in the sieve layers decreases step by step.

6. The multi-stage crushing screen for a rare earth waste recycling roasting furnace according to claim 5, characterized in that: The side wall of the housing (1) is fixedly connected to a protective cover (10), and one end of the two first rotating rods (2), the first rotating rod (2) and the two third rotating rods (6) are all inside the protective cover (10) along with the motor (8).

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