Phosphate ore crushing device

Abstract

The utility model discloses a phosphate ore crushing device. The device comprises an original crusher, a first-stage crusher, a medium-stage crusher screening machine, a fine-stage crusher feeding buffer bin, a second-stage crusher, a fine-stage crusher screening machine and a finished product conveying belt, the original crusher is provided with a large-dip-angle belt blanking position, the large-dip-angle belt blanking position is connected with the crusher through an articulated chute, and discharged materials of the original crusher are conveyed to the first-stage crusher through the articulated chute; discharged materials of the primary crusher are conveyed to a medium crushing screening machine through a primary discharging belt, one part of ore screened by the medium crushing screening machine is conveyed to a finished product conveying belt, the other part of ore is conveyed to a fine crushing feeding buffering bin through a secondary feeding belt, and discharged materials of the fine crushing feeding buffering bin are conveyed to a fine crushing screening machine through a secondary discharging belt. And one part of ore screened by the fine crushing screening machine is conveyed to the finished product conveying belt, and the other part of ore is conveyed to the fine crushing feeding buffer bin for secondary crushing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of phosphoric acid production, and particularly relates to a phosphate rock crushing device. BACKGROUND

[0002] The crushing system is an important link in the ore processing process, and its main function is to crush the raw ore into appropriate size particles to provide suitable materials for subsequent grinding, flotation and other processes. The system is usually composed of multiple stages such as coarse crushing, medium crushing and fine crushing, and each stage is equipped with corresponding crushing equipment and auxiliary facilities. The performance of the crushing system directly affects the efficiency and product quality of the entire ore processing process.

[0003] However, the current ore crushing system has significant problems that need to be improved. The system not only has low crushing efficiency, but also has unsatisfactory crushing effect, resulting in an average particle size of the crushed ore greater than 20 mm, which cannot meet the production requirements. Due to this particle size problem, the tailings of the mill system increase, which not only affects the production process quality, but also causes resource waste. In addition, the internal parts of the coarse crushing and fine crushing in the crushing system have been worn out, further exacerbating the deterioration of the crushing effect. Therefore, the particle size distribution of the ore slurry ground by the mill is only between-200 mesh 48%-52%, which is far lower than the standard of-200 mesh greater than 60% required by the flotation production. This condition seriously affects the beneficiation quality of the flotation section, resulting in key parameters such as MgO index unable to meet the concentrate index required by the later PPA production, which poses a serious challenge to the entire production process. In order to solve these problems, measures must be taken immediately to optimize and improve the crushing system, including equipment maintenance, process adjustment and introduction of advanced technology, to ensure the continuity and stability of the production process, improve the beneficiation quality and resource utilization rate. CONTENT OF THE INVENTION

[0004] In order to solve the above technical problems, the present application provides a phosphate rock crushing device, and the technical scheme provided in the present application is described as follows:

[0005] A phosphate rock crushing device comprises:

[0006] The raw crusher is provided with a large-inclination belt feeding position, the large-inclination belt feeding position is connected with the raw crusher and the crusher through a chute, the discharge of the raw crusher is transmitted to the primary crusher through the chute, the discharge of the primary crusher is conveyed to the medium crusher through a primary discharge belt, a part of the ore screened by the medium crusher is conveyed to the finished product conveying belt, another part is conveyed to the fine crushing feeding buffer bin through a secondary feeding belt, the discharge of the fine crushing feeding buffer bin is conveyed to the fine crusher through a secondary discharge belt, a part of the ore screened by the fine crusher is conveyed to the finished product conveying belt, and another part is conveyed to the fine crushing feeding buffer bin, and then secondary crushing is performed again.

[0007] Optionally, the screening particle size of the medium crusher is 15 mm, and the ore smaller than 15 mm is conveyed to the finished product conveying belt.

[0008] Optionally, the screening particle size of the fine crusher is 15 mm, and the ore smaller than 15 mm is conveyed to the finished product conveying belt.

[0009] Optionally, the primary crusher is a cone crusher.

[0010] Optionally, the secondary crusher is a cone crusher.

[0011] Optionally, the fine crushing feeding buffer bin is provided with a material level sensor for monitoring the material level in the buffer bin in real time.

[0012] Optionally, the finished product conveying belt is provided with a weighing sensor for monitoring and recording the weight of the conveyed finished product ore in real time.

[0013] From the above technical solutions, the present application has the following advantages:

[0014] 1. Through the preliminary crushing of the raw crusher and the primary crusher and the fine crushing of the secondary crusher, the two-stage crushing process can effectively crush the phosphate ore to the required particle size, and the crushing efficiency is improved.

[0015] 2. The medium crusher and the fine crusher are arranged to screen the crushed ore, screen out the finished product ore meeting the particle size requirement, and return the unqualified ore to the crusher for re-crushing, forming a closed loop and ensuring the particle size quality of the product.

[0016] 3. The fine crushing feeding buffer bin balances the material flow between crushing and screening, avoids overloading of the crusher or blocking of the screening machine due to too much material at a moment, and improves the stability of the entire crushing system.

[0017] 4. The entire crushing unit connects all the links through belt conveyors, realizing continuous automated crushing and screening of ore, reducing manual intervention and improving production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an embodiment of the phosphate rock crushing device provided in this application. Detailed Implementation

[0019] In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and other terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to describe the relative positional relationship between the components or parts and do not specifically limit the specific installation orientation of each component or part.

[0020] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0021] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0022] Furthermore, the structures, proportions, sizes, etc., drawn in the accompanying drawings of this application are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0023] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] Reference is made to Figure 1 The present application first provides an embodiment of a phosphate ore crushing device, which comprises:

[0025] The primary crusher 01 is provided with a large-inclination belt feeding place 08, which is connected with the primary crusher through a chute 09. The discharge of the primary crusher 01 is transmitted to the primary crusher 02 through the chute 09. The discharge of the primary crusher 02 is conveyed to the medium crusher screening machine 03 through a primary discharge belt 10. The medium crusher screening machine 03 screens a part of the ore to be conveyed to the finished product conveying belt 07, and another part is conveyed to the fine crushing feed buffer bin 04 through a secondary feeding belt 11. The discharge of the fine crushing feed buffer bin 04 is conveyed to the fine crushing screening machine 06 through a secondary discharge belt 12. The fine crushing screening machine 06 screens a part of the ore to be conveyed to the finished product conveying belt 07, and another part is conveyed to the fine crushing feed buffer bin 04, and then secondary crushing is performed again.

[0026] Primary crusher 01: The device comprises a primary crusher 01 for initially crushing the raw phosphate ore. The crusher is designed with a large-inclination belt feeding place 08 to facilitate the smooth entry of phosphate ore into the crushing cavity.

[0027] Primary crusher 02: After the primary crusher 01, the phosphate ore is transmitted to the primary crusher 02 through the chute 09 for further crushing. The main task of the primary crusher 02 is to further reduce the ore initially crushed by the primary crusher 01 to a medium particle size.

[0028] Medium crusher screening machine 03: The discharge of the primary crusher 02 is conveyed to the medium crusher screening machine 03 through the primary discharge belt 10. The function of the screening machine is to screen the ore, separate the crushed ore meeting certain particle size requirements, and convey it to the finished product conveying belt 07; and the ore not meeting the particle size requirements is screened out and sent to the next processing link through the secondary feeding belt 11.

[0029] Fine crushing feed buffer bin 04: The secondary feeding belt 11 conveys the unqualified ore screened from the medium crusher screening machine 03 to the fine crushing feed buffer bin 04. The function of the buffer bin is to temporarily store the ore and balance the material flow of the front and rear sections to ensure continuous and stable feeding to the subsequent secondary crusher 05.

[0030] Secondary crusher 05: The ore from the fine crushing feed buffer bin 04 is transported to the secondary crusher 05 through the secondary discharge belt 12 for final fine crushing. The secondary crusher 05 is usually configured to achieve finer crushing to meet the final particle size requirement.

[0031] Fine crushing screen 06: The ore after secondary crushing is sent to the fine crushing screen 06. Here, the screen again screens the ore, and the ore meeting the particle size requirement is transported to the finished product conveying belt 07 through the belt; and the ore not meeting the requirement is returned to the fine crushing feed buffer bin 04 to form a closed loop system to ensure that all ores can meet the final particle size standard.

[0032] Finished product conveying belt 07: The qualified phosphate rock finished product after screening is transported to the subsequent process link such as storage, packaging or further processing through the finished product conveying belt 07.

[0033] The working process of the entire device can be: raw ore → primary crusher 01 → primary crusher 02 → medium crushing screen 03 (screening / classification) → finished product or fine crushing feed buffer bin 04 → secondary crusher 05 → fine crushing screen 06 (screening / classification) → finished product or return to the fine crushing feed buffer bin 04 for re-crushing.

[0034] The device of this embodiment can effectively control the particle size distribution of the final product through the two-stage crushing and screening system, and meet the needs of different applications.

[0035] Optionally, the screening particle size of the medium crushing screen 03 is 15 mm, and the ore smaller than 15 mm is transported to the finished product conveying belt 07.

[0036] In this embodiment, the medium crushing screen 03 is configured to have a screening particle size of 15 mm. When the ore passes through the medium crushing screen 03, the ore particles smaller than 15 mm will pass through the screen and be transported onto the finished product conveying belt 07.

[0037] Optionally, the screening particle size of the fine crushing screen 06 is 15 mm, and the ore smaller than 15 mm is transported to the finished product conveying belt 07.

[0038] In this embodiment, the screening particle size of the fine crushing screen 06 is also set to 15 mm. Similar to the medium crushing screen 03, the ore particles smaller than 15 mm will pass through the screen of the fine crushing screen 06 and be transported onto the finished product conveying belt 07.

[0039] Optionally, the primary crusher 02 is a cone crusher.

[0040] In this embodiment, the primary crusher 02 adopts a cone crusher. The cone crusher has the advantages of large crushing ratio, high efficiency, and low energy consumption, and is suitable for crushing ores of various hardness. As the primary crusher 02, it can crush larger ore blocks into smaller particles, providing suitable materials for subsequent screening and crushing operations.

[0041] Optionally, the secondary crusher 05 is a cone crusher.

[0042] Similar to the primary crusher 02, the secondary crusher 05 also adopts a cone crusher in this embodiment. The role of the secondary crusher 05 is to further crush the ore particles after the primary crushing to obtain smaller ore particles. Using a cone crusher as the secondary crusher 05 can ensure crushing efficiency and product quality, meeting production requirements.

[0043] Optionally, the fine crushing feed buffer bin 04 is equipped with a level sensor 13 for real-time monitoring of the ore level in the buffer bin.

[0044] In this embodiment, the fine crushing feed buffer bin 04 is equipped with a level sensor 13. The level sensor 13 can monitor the ore level in the buffer bin in real time, and when the level is too high or too low, the sensor will send a signal so that the operator can adjust the feed amount or take other measures in time.

[0045] Optionally, the finished product conveying belt 07 is equipped with a weighing sensor 14 and a counter for real-time monitoring and recording the weight of the conveyed finished ore.

[0046] In this embodiment, the finished product conveying belt 07 is equipped with a weighing sensor 14 and a counter. The weighing sensor 14 can monitor and record the weight of the conveyed finished ore in real time, and the counter can count the number of conveyed finished ore. These data can provide important basis for production management and quality control, helping to realize the automation and intelligentization of ore production.

[0047] It should be noted that the above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A phosphate rock crushing device, characterized in that, include: The system comprises a primary crusher, a primary crusher, a secondary crusher and screening machine, a fine crushing feed buffer bin, a secondary crusher, a fine crushing screening machine, and a finished product conveyor belt. The primary crusher is equipped with a steep-angle belt discharge point, which is connected to the primary crusher via a chute. The discharge from the primary crusher is transferred to the primary crusher via the chute. The discharge from the primary crusher is conveyed to the secondary crusher and screening machine via the primary discharge belt. The secondary crusher and screening machine filters out a portion of the ore, which is then conveyed to the finished product conveyor belt. The remaining portion is conveyed to the fine crushing feed buffer bin via the secondary feed belt. The discharge from the fine crushing feed buffer bin is conveyed to the fine crushing screening machine via the secondary discharge belt. The fine crushing screening machine filters out a portion of the ore, which is then conveyed to the finished product conveyor belt. The remaining portion is conveyed to the fine crushing feed buffer bin for further secondary crushing.

2. The phosphate rock crushing device according to claim 1, characterized in that, The medium crushing screening machine has a screening particle size of 15mm, and ore smaller than 15mm is conveyed to the finished product conveyor belt.

3. The phosphate rock crushing device according to claim 1, characterized in that, The fine crushing and screening machine has a screening particle size of 15mm, and ore smaller than 15mm is conveyed to the finished product conveyor belt.

4. The phosphate rock crushing device according to claim 1, characterized in that, The primary crusher is a cone crusher.

5. The phosphate rock crushing device according to claim 1, characterized in that, The secondary crusher is a cone crusher.

6. The phosphate rock crushing device according to claim 1, characterized in that, The fine crusher feed buffer silo is equipped with a material level sensor for real-time monitoring of the ore level within the buffer silo.

7. The phosphate rock crushing device according to claim 1, characterized in that, The finished product conveyor belt is equipped with a weighing sensor for real-time monitoring and recording of the weight of the conveyed finished ore.

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