Manganese slag crushing device

Abstract

The manganese slag crushing device comprises a base, a crushing mechanism and a driving mechanism, the crushing mechanism and the driving mechanism are arranged on the base, the driving mechanism is connected with the crushing mechanism and used for driving the crushing mechanism to perform crushing work, a pre-screening mechanism is obliquely arranged above the crushing mechanism, and the pre-screening mechanism comprises a screening groove and a first screening net. The first screen is arranged in the screen groove, a coarse grain ore outlet is formed in the lower end of the screen groove and corresponds to the oversize side wall of the first screen, a medium grain ore outlet is formed in the lower end of the screen groove and corresponds to the undersize end wall of the first screen, the medium grain ore outlet is communicated with a crushing feeding hopper of the crushing mechanism, and a pre-screening feeding port is formed in the higher end of the screen groove. And a pre-screening feed hopper is arranged at the pre-screening feed port. According to the utility model, the pre-screening mechanism is arranged on the crushing mechanism, so that large-size coarse-grain ores can be effectively pre-screened and eliminated, large manganese slag ores are prevented from entering the crushing mechanism to influence the crushing efficiency of fine crushing, the workload of the crushing mechanism is reduced, and the damage risk of the crushing mechanism is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of crushing equipment, in particular to a manganese slag crushing device. Background Art

[0002] In the process of recycling and comprehensive utilization of valuable metals from ferroalloy waste slag, there are two ways to treat the manganese slag produced by smelting. One is to produce granular water-quenched slag after water quenching and then perform a primary crushing treatment. The other is to perform a two-stage crushing treatment after natural cooling in the case of water shortage. When performing a two-stage crushing treatment, the first-stage coarse crushing usually controls the manganese slag crushing particle size to 100-150mm and then sends it to the second-stage fine crushing device for crushing. The second-stage fine crushing usually needs to control the manganese slag crushing particle size to 10-30mm. The crushing device used in the second-stage fine crushing usually has certain requirements for the particle size of the manganese slag to be crushed. If the particle size of the manganese slag to be crushed is too large, it will increase the workload of the fine crushing device, thereby causing abnormal wear of the fine crushing device and affecting the working efficiency of the fine crushing device. Utility Model Content

[0003] The main purpose of the utility model is to overcome the defects of the above-mentioned background technology and provide a manganese slag crushing device.

[0004] To achieve the above-mentioned purpose, the manganese slag crushing device proposed in the utility model includes a base, a crushing mechanism and a driving mechanism arranged on the base, the driving mechanism is connected to the crushing mechanism, and is used to drive the crushing mechanism to perform crushing work, a pre-screening mechanism is obliquely arranged above the crushing mechanism, the pre-screening mechanism includes a screen slot and a first screen, the first screen is arranged in the screen slot, a coarse-grained ore outlet is provided on the upper side wall of the screen corresponding to the first screen at the lower end of the screen slot, a medium-grained ore outlet is provided on the lower end of the screen slot corresponding to the lower end wall of the screen of the first screen, the medium-grained ore outlet is connected to the crushing feed hopper of the crushing mechanism, a pre-screening feed port is provided at the higher end of the screen slot, and a pre-screening feed hopper is provided at the pre-screening feed port. The manganese slag to be crushed enters the screen slot from the pre-screening feed hopper and falls onto the first screen. Under the action of gravity, the manganese slag rolls from the higher end to the lower end of the first screen for screening. The screened coarse-grained ore is discharged from the coarse-grained ore outlet and returned for re-rough crushing, while the screened medium-grained ore is discharged from the medium-grained ore outlet and enters the crushing mechanism through the crushing feed hopper for fine crushing. The first screen pre-screens and excludes larger coarse-grained ore, avoiding larger ore from entering the crushing mechanism and affecting the crushing efficiency of the fine crushing, effectively reducing the workload of the crushing mechanism and reducing the risk of damage to the crushing mechanism.

[0005] To further optimize the technical solution, the pre-screening mechanism also includes a second screen, which is arranged in the screen slot, and the second screen is located directly below the first screen. The medium-grained ore outlet is connected to the upper end of the second screen, and the lower end of the screen slot corresponds to the lower side wall of the second screen. A fine-grained ore outlet is provided, and the fine-grained ore outlet is connected to the crushing discharge port at the bottom of the crushing mechanism. The manganese slag passing through the first screen is screened again by the second screen to ensure that the particle size of the finely broken manganese slag is uniform between 30-150mm, and the particle size of the underscreen material screened by the second screen is less than 30mm, which falls to the inner bottom surface of the screen slot and is discharged from the fine-grained ore outlet and enters the next process together with the manganese slag after the fine breaking, so as to avoid the fine-grained ore from entering the crushing mechanism and being crushed again, thereby reducing the workload of the crushing mechanism. The screen slot is driven to rotate and vibrate by the transmission component, and the vibration will accelerate the flow and pre-screening of the manganese slag, and prevent the manganese slag from accumulating in the screen slot.

[0006] To further optimize the technical solution, the bottom of the lower end of the screen slot is hinged to the crushing feed hopper, support plates are respectively provided in the middle of both sides of the screen slot, and transmission components are provided on both sides of the crushing mechanism, the transmission components are abutted against the support plates, and the transmission components are used to convert the rotational motion of the crushing mechanism during operation into vertical reciprocating motion, and drive the screen slot to perform reciprocating rotational vibration around the crushing feed hopper.

[0007] To further optimize the technical solution, the transmission assembly includes a large gear ring, planetary gears, a fixed frame, a vertical rod and a guide plate. The large gear ring is fixed to the shell on both sides of the crushing mechanism through the fixed frame. The size of the large gear ring corresponds to the pulley and flywheel on the crushing mechanism. The planetary gear is arranged on the outer wall of the pulley or the flywheel through an eccentric shaft and is meshed with the large gear ring. A connecting rod is hinged on the planetary gear, and the other end of the connecting rod is hinged to the bottom end of the vertical rod. One end of the guide plate is fixed to the shell of the crushing mechanism, and a guide hole is provided on the guide plate. The vertical rod vertically passes through the guide hole and is slidably connected to the guide plate, and the top end of the vertical rod abuts against the bottom end of the support plate.

[0008] To further optimize the technical solution, a guide rod is provided at the top of the vertical rod, a spring is sleeved on the guide rod, a through hole is opened on the support plate, the guide rod passes through the through hole, the aperture of the through hole is larger than the diameter of the guide rod, the top of the guide rod is fixedly connected to a limiting block, the bottom end of the spring is connected to the vertical rod, and the top end of the spring is connected to the bottom surface of the guide rod.

[0009] To further optimize the technical solution, a plurality of groups of cover plates are provided on the top of the sieve slot.

[0010] To further optimize the technical solution, both sides of the top opening of the sieve slot are provided with outward flanges, and the side edges of the cover plate are provided with sliding grooves corresponding to the outward flanges.

[0011] To further optimize the technical solution, a handle is provided on the top of the cover.

[0012] To further optimize the technical solution, a threaded hole is provided on the outer flange corresponding to the lower end of the sieve slot, and a positioning bolt is provided in the threaded hole.

[0013] To further optimize the technical solution, a guide trough is provided between the medium-grained ore outlet and the crushing feed hopper, the upper end of the guide trough is connected to the medium-grained ore outlet, and the lower end of the guide trough is connected to the crushing feed hopper.

[0014] The beneficial effects of the utility model include: by arranging a pre-screening mechanism on the crushing mechanism, the manganese slag enters the screen slot from the pre-screening feed hopper of the pre-screening mechanism after coarse crushing, and falls onto the first screen; the manganese slag rolls from the higher end to the lower end of the first screen under the action of gravity for pre-screening; the screened coarse-grained ore is discharged from the coarse-grained ore outlet for re-coarse crushing, while the screened medium-grained ore is discharged from the medium-grained ore outlet and enters the crushing mechanism through the crushing feed hopper for fine crushing; the first screen can effectively pre-screen and exclude larger coarse-grained ore, thereby avoiding larger manganese slag ore from entering the crushing mechanism to affect the crushing efficiency of fine crushing, reducing the workload of the crushing mechanism, and reducing the risk of damage to the crushing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of a manganese slag crushing device from one perspective in an embodiment of the utility model.

[0016] Figure 2 It is an overall schematic diagram from another perspective of the manganese slag crushing device in the embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of the manganese slag crushing device in the embodiment of the utility model after the base and the crushing mechanism are removed.

[0018] Figure 4 It is a schematic diagram of a transmission assembly in an embodiment of the utility model.

[0019] Figure 5 It is a schematic diagram of a cover plate in an embodiment of the utility model.

[0020] Reference numerals: 1 base; 2 crushing mechanism; 201 crushing feed hopper; 202 pulley; 203 flywheel; 204 guide trough; 3 driving mechanism; 301 belt; 4 pre-screening mechanism; 401 screen slot; 4011 coarse-grained ore outlet; 4012 medium-grained ore outlet; 4013 fine-grained ore outlet; 4014 support plate; 4015 through hole; 402 first screen; 403 pre-screening feed port; 404 pre-screening feed hopper; 405 second screen; 406 cover plate; 4061 slide groove; 4062 handle; 407 outer flange; 4071 threaded hole; 4072 positioning bolt; 5 transmission assembly; 501 large ring gear; 502 planetary gear; 503 fixing frame; 504 vertical rod; 505 guide plate; 5051 guide hole; 506 eccentric shaft; 507 connecting rod; 5071 eccentric rod; 508 guide rod; 5081 limit block; 509 spring. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for both fixing and circuit connection.

[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0025] See also Figures 1 to 5In one embodiment, a manganese slag crushing device is disclosed, comprising a base 1, a crushing mechanism 2 and a driving mechanism 3 arranged on the base 1, the driving mechanism 3 is connected to the crushing mechanism 2 through a belt 301 for driving the crushing mechanism 2 to perform crushing, a pre-screening mechanism 4 is obliquely arranged above the crushing mechanism 2, the pre-screening mechanism 4 comprises a screen slot 401 and a first screen 402, the first screen 402 is arranged inside the screen slot 401, a coarse-grained ore outlet 4011 is opened at the lower end of the screen slot 401 corresponding to the upper side wall of the first screen 402, a medium-grained ore outlet 4012 is opened at the lower end of the screen slot 401 corresponding to the lower end wall of the first screen 402, the medium-grained ore outlet 4012 is connected to the crushing feed hopper 201 of the crushing mechanism 2, a pre-screening feed port 403 is opened at the higher end of the screen slot 401, and a pre-screening feed hopper 404 is arranged at the pre-screening feed port 403. Specifically, the inclination angle of the first screen 402 in the screen slot 401 is between 10° and 30°, and the first screen 402 is also inclined at a certain angle to one side of the coarse-grained ore outlet 4011, so that the screened material (coarse-grained ore) can be automatically discharged from the coarse-grained ore outlet 4011 under the action of gravity. The sieve hole diameter of the first screen 402 is 150 mm. In this embodiment, after the manganese slag is coarsely crushed, it enters the manganese slag crushing device for fine crushing again. The manganese slag to be crushed enters the screen slot 401 from the pre-screening feed hopper 404 and falls on the first screen 402. The slag rolls from the higher end to the lower end of the first screen 402 under the action of gravity for screening. The screened coarse-grained ore (screened material) is discharged from the coarse-grained ore outlet 4011 and returned for re-coarse crushing, while the screened medium-grained ore (screened material) is discharged from the medium-grained ore outlet 4012 and enters the crushing mechanism 2 through the crushing feed hopper 201 for fine crushing. The first screen 402 pre-screens and excludes larger coarse-grained ore, thereby preventing larger ore from entering the crushing mechanism 2 and affecting the crushing efficiency of the fine crushing, reducing the workload of the crushing mechanism 2, and reducing the risk of damage to the crushing mechanism 2.

[0026] In a preferred embodiment, the pre-screening mechanism 4 further includes a second screen 405, which is arranged in the screen slot 401 and is located directly below the first screen 402. The medium-grained ore outlet 4012 is connected to the upper end of the second screen 405, and a fine-grained ore outlet 4013 is provided at the lower end of the screen slot 401 corresponding to the lower side wall of the second screen 405, and the fine-grained ore outlet 4013 is connected to the crushing discharge port (not shown) at the bottom of the crushing mechanism 2. Specifically, the inner bottom surface of the screen slot 401 is inclined at a certain angle to the side of the fine-grained ore outlet 4013, so that the undersize of the second screen 405 can be discharged under the action of gravity, and the sieve hole diameter of the second screen 405 is 30 mm. In this embodiment, the manganese slag to be crushed passes through the first sieve 402 and falls onto the second sieve 405 for screening again. The screened material (particle size 30-150mm) screened out by the second sieve 405 is discharged through the medium-grained ore outlet 4012 and enters the crushing mechanism 2 for fine crushing, ensuring that the particle size of the finely crushed manganese slag is uniformly between 30-150mm. The screened material screened out by the second sieve 405 with a particle size less than 30mm falls to the inner bottom surface of the screen slot 401 and is discharged from the fine-grained ore outlet 4013 and enters the next process together with the manganese slag after fine crushing, thereby avoiding the fine-grained ore from entering the crushing mechanism 2 for further crushing, thereby reducing the workload of the crushing mechanism 2.

[0027] In a preferred embodiment, the bottom of the lower end of the screen slot 401 is hinged to the crushing feed hopper 201, support plates 4014 are respectively provided in the middle of both sides of the screen slot 401, and transmission components 5 are provided on both sides of the crushing mechanism 2. The transmission components 5 abut against the support plates 4014. The transmission components 5 are used to convert the rotational motion of the crushing mechanism 2 during operation into vertical reciprocating motion, and drive the screen slot 401 to reciprocate around the crushing feed hopper 201. In this embodiment, the screen slot 401 (the first screen 402 and the second screen 405) is driven to rotate and vibrate by the transmission component 5, and the vibration will accelerate the flow and pre-screening of manganese slag, and prevent the manganese slag from accumulating in the screen slot 401.

[0028] In a specific example, the transmission assembly 5 includes a large ring gear 501, a planetary gear 502, a fixing frame 503, a vertical rod 504 and a guide plate 505. The large ring gear 501 is fixed to the shells on both sides of the crushing mechanism 2 through the L-shaped fixing frame 503. The size of the large ring gear 501 corresponds to the pulley 202 and the flywheel 203 on the crushing mechanism 2. Specifically, the large ring gear 501 is coaxially arranged with the pulley 202 and the flywheel 203 respectively. The planetary gear 502 is eccentrically arranged on the outer wall of the pulley 202 or the flywheel 203 through the eccentric shaft 506 and is meshed with the large ring gear 501. A connecting rod 507 is hinged on the planetary gear 502. The other end of the rod 507 is hinged to the bottom end of the vertical rod 504. Specifically, one end of the connecting rod 507 is eccentrically hinged to the side wall of the planetary gear 502 through the eccentric rod 5071. The eccentric distance is consistent with the radius of the planetary gear 502, and the diameter of the planetary gear 502 is consistent with the radius of the large gear ring 501, so that the vertical rod 504 will not swing left and right when it reciprocates up and down. One end of the guide plate 505 is fixed to the shell of the crushing mechanism 2, and the other end of the guide plate 505 is provided with a guide hole 5051. The vertical rod 504 vertically passes through the guide hole 5051 to be slidably connected with the guide plate 505, and the top of the vertical rod 504 abuts against the bottom surface of the support plate 4014. In this embodiment, when the pulley 202 or the flywheel 203 rotates, it drives the planetary gear 502 to rotate. Since the large ring gear 501 is fixed, the planetary gear 502 revolves and rotates at the same time, driving the vertical rod 504 to rise and fall back. When rising, it lifts up the support plate 4014, and the support plate 4014 drives the screen slot 401 to rotate upward a certain distance around the hinge with the crushing feed hopper 201, and then returns under the action of the screen slot 401's own gravity to achieve vibration.

[0029] In a specific example, a guide rod 508 is provided at the top of the vertical rod 504, a spring 509 is sleeved on the guide rod 508, a through hole 4015 is opened on the support plate 4014, the guide rod 508 passes through the through hole 4015, the aperture of the through hole 4015 is larger than the diameter of the guide rod 508, a limit block 5081 is fixedly connected to the top of the guide rod 508, the diameter of the limit block 5081 is larger than the aperture of the through hole 4015, the bottom end of the spring 509 is connected to the vertical rod 504, and the top end of the spring 509 is connected to the bottom surface of the guide rod 508. The spring 509 is used for buffering, and the limit block 5081 effectively limits the screen slot 401 to a certain position, so as to prevent the excessive vibration of the screen slot 401 from causing the manganese slag to bump and damage the screen.

[0030] In a preferred embodiment, a plurality of cover plates 406 are provided on the top of the sieve slot 401. The cover plates 406 prevent the manganese slag on the first sieve 402 from being thrown out of the sieve slot 401.

[0031] In a specific example, outer flanges 407 are provided on both sides of the top opening of the sieve slot 401, and slide grooves 4061 corresponding to the outer flanges 407 are provided on the side of the cover plate 406. When the cover plate 406 is covered on the sieve slot 401, the slide grooves 4061 are aligned with the outer flanges 407 and then the cover plate 406 is pushed upward to engage the slide grooves 4061 with the outer flanges 407, thereby preventing the cover plate 406 from separating in the up-down and front-back directions of the sieve slot 401 and increasing stability.

[0032] In a specific example, a handle 4062 is provided on the top of the cover plate 406. The handle 4062 facilitates the workers to carry and install the cover plate 406.

[0033] In a specific example, a threaded hole 4071 is provided on the outer flange 407 corresponding to the lower end of the sieve slot 401, and a positioning bolt 4072 is provided in the threaded hole 4071. After all the cover plates 406 are installed, the positioning bolt 4072 is screwed into the threaded hole 4071 to lock the last cover plate 406, and the cover plate 406 is placed back so that all the cover plates 406 are firmly installed on the sieve slot 401, and the manganese slag is screened in a relatively closed space.

[0034] In a specific example, a guide trough 204 is provided between the medium-grained ore outlet 4012 and the crushing feed hopper 201, the upper end of the guide trough 204 is communicated with the medium-grained ore outlet 4012, and the lower end of the guide trough 204 is communicated with the crushing feed hopper 201. Specifically, the guide trough 204 is preferably made of a flexible material, such as rubber, plastic, fiber fabric, and composite material, to avoid affecting the rotational vibration of the screen slot 401. By providing the guide trough 204, the medium-grained manganese slag is effectively introduced into the crushing feed hopper 201 to prevent the manganese slag from being scattered to the outside.

[0035] The above content is a further detailed description of the utility model in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, it can also make several substitutions or modifications to these described embodiments, and these substitutions or modifications should be regarded as belonging to the scope of protection of the utility model. In the description of this specification, the description of the reference terms "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the absence of mutual contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations may be made herein without departing from the scope of protection of the patent application.

Claims

1. A manganese slag crushing device, comprising a base, a crushing mechanism and a driving mechanism arranged on the base, wherein the driving mechanism is connected to the crushing mechanism and is used to drive the crushing mechanism to perform crushing work, characterized in that: A pre-screening mechanism is obliquely provided above the crushing mechanism, and the pre-screening mechanism includes a screen slot and a first screen, the first screen is arranged in the screen slot, a coarse-grained ore outlet is provided on the upper side wall of the screen corresponding to the first screen at the lower end of the screen slot, a medium-grained ore outlet is provided on the lower end of the screen slot corresponding to the lower end wall of the first screen, the medium-grained ore outlet is connected to the crushing feed hopper of the crushing mechanism, a pre-screening feed port is provided at the higher end of the screen slot, and a pre-screening feed hopper is provided at the pre-screening feed port.

2. The manganese slag crushing device according to claim 1, characterized in that: The pre-screening mechanism also includes a second screen, which is arranged in the screen slot and directly below the first screen. The medium-grained ore outlet is connected to the upper end of the second screen, and a fine-grained ore outlet is provided at the lower end of the screen slot corresponding to the lower side wall of the second screen, and the fine-grained ore outlet is connected to the crushing discharge port at the bottom of the crushing mechanism.

3. The manganese slag crushing device according to claim 2, characterized in that: The bottom of the lower end of the screen slot is hinged to the crushing feed hopper, and support plates are respectively provided in the middle of both sides of the screen slot. Transmission components are provided on both sides of the crushing mechanism, and the transmission components are abutted against the support plates. The transmission components are used to convert the rotational motion of the crushing mechanism during operation into vertical reciprocating motion, and drive the screen slot to perform reciprocating rotational vibration around the crushing feed hopper.

4. The manganese slag crushing device according to claim 3, characterized in that: The transmission assembly includes a large gear ring, planetary gears, a fixed frame, a vertical rod and a guide plate. The large gear ring is fixed to the shells on both sides of the crushing mechanism through the fixed frame. The size of the large gear ring corresponds to the pulley and flywheel on the crushing mechanism. The planetary gear is arranged on the outer side wall of the pulley or the flywheel through an eccentric shaft and is meshed with the large gear ring. A connecting rod is hinged on the planetary gear, and the other end of the connecting rod is hinged to the bottom end of the vertical rod. One end of the guide plate is fixed to the shell of the crushing mechanism, and a guide hole is provided on the guide plate. The vertical rod vertically passes through the guide hole and is slidably connected to the guide plate, and the top end of the vertical rod abuts against the bottom end of the support plate.

5. The manganese slag crushing device according to claim 4, characterized in that: A guide rod is provided at the top of the vertical rod, a spring is sleeved on the guide rod, a through hole is opened on the support plate, the guide rod passes through the through hole, the aperture of the through hole is larger than the diameter of the guide rod, the top of the guide rod is fixedly connected to a limiting block, the bottom end of the spring is connected to the vertical rod, and the top of the spring is connected to the bottom surface of the guide rod.

6. The manganese slag crushing device according to claim 5, characterized in that: A plurality of groups of cover plates are arranged on the top of the sieve slot.

7. The manganese slag crushing device according to claim 6, characterized in that: Outer flanges are arranged on both sides of the top opening of the sieve slot, and sliding grooves corresponding to the outer flanges are arranged on the side edges of the cover plate.

8. The manganese slag crushing device according to claim 7, characterized in that: A handle is provided on the top of the cover plate.

9. The manganese slag crushing device according to claim 8, characterized in that A threaded hole is provided on the outer flange corresponding to the lower end of the sieve slot, and a positioning bolt is provided in the threaded hole.

10. The manganese slag crushing device according to claim 9, characterized in that: A material guide trough is provided between the medium-grained ore outlet and the crushing feed hopper, the upper end of the material guide trough is communicated with the medium-grained ore outlet, and the lower end of the material guide trough is communicated with the crushing feed hopper.

Images