Coarse slime separation system of coal cleaning plant

Abstract

The utility model belongs to the technical field of coal preparation, and particularly relates to a coal cleaning plant coarse slime separation system which comprises a fine and medium magnetic tail barrel, the fine and medium magnetic tail barrel is communicated with a slime classification cyclone through a delivery pump, the slime classification cyclone is communicated with a TBS separator, and the TBS separator is respectively communicated with a TBS concentrate barrel and a TBS tailing barrel. The TBS concentrate barrel is communicated with the stacking screen through the conveying pump, the stacking screen is communicated with the clean coal centrifugal machine, and the clean coal centrifugal machine is connected with the clean coal belt conveyor; the TBS tailing barrel is communicated with the sieve bend through the conveying pump, the sieve bend is communicated with the middling coal centrifugal machine, and the middling coal centrifugal machine is connected with the middling coal belt conveyor. The concentrate ash content after TBS separation is reduced, the yield is improved, and the clean coal quality is improved; the coarse slime separation granularity is controlled through the classification cyclone, and the pressure of the classification cyclone is reduced; the clean coal yield and quality are improved; the pressure of a slime water system is relieved, the upper limit of the granularity of fed materials entering flotation is reduced, and the using amount of flotation reagents is saved.

Description

Technical Field

[0001] This utility model belongs to the field of coal preparation technology, and in particular relates to a coarse coal slime separation system for coal washing plants. Background Technology

[0002] The separation process of coarse coal slime is of great significance for deep coal processing and improving coal resource utilization. Effective separation of coarse coal slime can reduce coal resource waste caused by coarse particles being lost. In the coal preparation process, if coarse particles cannot be recovered in a timely manner, it can easily cause blockage of the pressure filter, damage to the filter cloth, and slurry spraying in the filter press system, resulting in waste of coal resources. Achieving precise separation of coarse coal slime is crucial for improving the efficiency and accuracy of the coal preparation process, helping to solve the gap in effective separation particle size between gravity separation and flotation, and reducing the loss of low-ash clean coal.

[0003] Therefore, the separation of coarse coal slime helps improve the utilization rate of coal resources and the efficiency of coal preparation, reduces resource waste, optimizes coal preparation technology, and is of great significance to the sustainable development of the coal industry. Summary of the Invention

[0004] Therefore, the purpose of this utility model is to provide a coarse coal slime separation system for a coal washing plant to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the following technical solution is adopted:

[0006] The coarse coal slime separation system of the coal washing plant includes a fine, medium and fine magnetic tailing barrel. The fine, medium and fine magnetic tailing barrel is connected to a coal slime classifying hydrocyclone via a conveying pump. The coal slime classifying hydrocyclone is connected to a TBS separator. The TBS separator is connected to a TBS concentrate barrel and a TBS tailing barrel respectively.

[0007] The TBS concentrate drum is connected to the stacked screen via a conveying pump, the stacked screen is connected to the clean coal centrifuge, and the clean coal centrifuge is connected to the clean coal belt conveyor.

[0008] The TBS tailings bucket is connected to an arc screen via a conveying pump, the arc screen is connected to a coal centrifuge, and the coal centrifuge is connected to a coal belt conveyor.

[0009] As a further improvement of this utility model, the coal slime classifying hydrocyclone is connected to the flotation system.

[0010] As a further improvement of this utility model, the stacked screen and the clean coal centrifuge are connected to the flotation system.

[0011] As a further improvement of this utility model, the arc screen and the middlings centrifuge are connected to the flotation system.

[0012] The beneficial effects of this utility model are:

[0013] In terms of energy conservation and environmental protection: the ash content of the concentrate after TBS separation is reduced, the yield is increased, and the quality of clean coal is improved; the particle size of coarse coal slime is controlled by the classifying hydrocyclone, and the pressure of the classifying hydrocyclone is reduced.

[0014] In terms of results: After using TBS, the clean coal yield increased by 0.5%, and the clean coal ash content decreased (from 11.25 to 10.30), thus improving the clean coal yield and quality; it reduced the pressure on the coal slurry water system, lowered the upper limit of particle size entering the flotation feed, and saved the amount of flotation reagents; the process is simple, reducing the difficulty of operation for workers and maintaining the stability of separation. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 This is a system equipment connection diagram of this utility model. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

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

[0019] The coarse coal slime separation system of the coal washing plant includes a fine and medium magnetic tailing barrel 1. The fine and medium magnetic tailing barrel 1 is connected to the coal slime classifying hydrocyclone 2 through a conveying pump. The coal slime classifying hydrocyclone 2 is connected to the TBS separator 3. The TBS separator 3 is connected to the TBS concentrate barrel 4 and the TBS tailing barrel 5 respectively.

[0020] TBS concentrate drum 4 is connected to stacked screen 6 via a conveying pump, stacked screen 6 is connected to clean coal centrifuge 7, and clean coal centrifuge 7 is connected to clean coal belt conveyor 8.

[0021] TBS tailings bucket 5 is connected to arc screen 9 via a conveying pump. Arc screen 9 is connected to middlings centrifuge 10. Middlings centrifuge 10 is connected to middlings belt conveyor 11. Coal slime grading hydrocyclone 2 is connected to flotation system 12. Stacked screen 6 and clean coal centrifuge 7 are connected to flotation system 12. Arc screen 9 and middlings centrifuge 10 are connected to flotation system 12.

[0022] The tailings from the magnetic separation of clean coal and middlings are pumped into the coal slime classifying hydrocyclone 2 via a conveying pump in the clean and middlings magnetic tailings tank 1. The coal slime classifying hydrocyclone 2 controls the particle size of the coal slime. Particles with a size <0.25mm are directly sent to the flotation for separation, while particles with a size >0.25mm are sent to the TBS separator 3 for separation. The separated concentrate is deslimed and dewatered by a stacked screen 6. The product on the screen is dewatered by a centrifuge and then mixed with clean coal products. The undersize water and centrifugal liquid are sent to the flotation system 12. The tailings product separated by the TBS separator 3 is dewatered and used as middlings products.

[0023] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A coarse coal slime separation system for a coal washing plant, including a fine and medium coal fine magnetic tail bin, characterized in that, The fine ore tailing bucket is connected to the coal slime classifying hydrocyclone via a conveying pump. The coal slime classifying hydrocyclone is connected to the TBS separator. The TBS separator is connected to the TBS concentrate bucket and the TBS tailing bucket respectively. The TBS concentrate drum is connected to the stacked screen via a conveying pump, the stacked screen is connected to the clean coal centrifuge, and the clean coal centrifuge is connected to the clean coal belt conveyor. The TBS tailings bucket is connected to an arc screen via a conveying pump, the arc screen is connected to a coal centrifuge, and the coal centrifuge is connected to a coal belt conveyor.

2. The coarse coal slime separation system for a coal washing plant according to claim 1, characterized in that, The coal slime cyclone separator is connected to the flotation system.

3. The coarse coal slime separation system for a coal washing plant according to claim 2, characterized in that, The stacked screen and the clean coal centrifuge are connected to the flotation system.

4. The coarse coal slime separation system for a coal washing plant according to claim 3, characterized in that, The arc screen and the middlings centrifuge are connected to the flotation system.

Images