Phosphorite flotation system for producing multi-quality phosphate concentrate

Abstract

The utility model relates to the technical field of phosphorite processing equipment, in particular to a phosphorite flotation system for producing multi-quality phosphate concentrate, which comprises a ball mill, the output end of the ball mill is connected with a first flotation column, one side of the top of the first flotation column is connected with a flotation machine, and one side of the bottom of the first flotation column is connected with a concentrate thickener. The bottom of one side of the flotation machine is connected with a reverse sweeping conveying pipe, the other side of the bottom of the first flotation column is connected with a buffering groove, and an ore pulp pump is installed at the output end of the buffering groove. According to the phosphorite flotation system for producing the multi-quality phosphate concentrates, equipment such as the ball mill, the flotation column, the flotation machine, the concentrate thickener, the buffer tank, the ore pulp pump and the swirler is creatively integrated, the technological process is optimized, and the target of producing the multi-quality phosphate concentrates on line is achieved. The system not only improves the comprehensive utilization rate of phosphorite resources, but also remarkably enhances the flexibility and diversity of production, and meets the requirements of the market on differentiated and high-quality phosphorus chemical products.

Description

Technical Field

[0001] The utility model relates to the technical field of phosphate ore processing equipment, and specifically to a phosphate ore flotation system for producing multi-quality phosphate concentrates. Background Art

[0002] Phosphate ore is an important non-metallic mineral resource, which is widely used in the production of chemical products such as phosphate fertilizers, phosphoric acid, and phosphates. With the continuous progress of industrial technology and the diversification of market demands, higher requirements are put forward for the phosphate ore flotation system. Traditional phosphate ore flotation systems can often only produce phosphate concentrates of one quality and cannot meet the production requirements of diversified and differentiated products. Due to the situation that the quality of phosphate concentrates is neither high nor low, the quality of high-nitrogen and highly water-soluble phosphate fertilizer products produced is often unqualified, while the nutrients of ordinary phosphate compound fertilizer products are redundant, which also causes unscientific and inefficient utilization of phosphate resources. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a phosphate ore flotation system for producing multi-quality phosphate concentrates, so as to solve the problem that traditional phosphate ore flotation systems can often only produce phosphate concentrates of one quality and cannot meet the production requirements of diversified and differentiated products as mentioned in the above background art.

[0004] To achieve the above purpose, the utility model provides a phosphate ore flotation system for producing multi-quality phosphate concentrates, including a ball mill. The output end of the ball mill is connected to a first flotation column. One side of the top of the first flotation column is connected to a flotation machine. One side of the bottom of the first flotation column is connected to a concentrate thickener. One side of the bottom of the flotation machine is connected to a back-scan conveying pipe. The other side of the bottom of the first flotation column is connected to a buffer tank. A slurry pump is installed at the output end of the buffer tank. The output end of the slurry pump is connected to a second flotation column through a slurry conveying pipe. One side of the top of the second flotation column is connected to a middlings conveying pipe. One side of the bottom of the second flotation column is connected to a hydrocyclone. The upper part of one side of the hydrocyclone is connected to an overflow slurry pipe.

[0005] Preferably, the output end of the concentrate thickener is connected to a concentrate conveying pipe.

[0006] Preferably, valves are installed on the back-scan conveying pipe, the middlings conveying pipe, and the overflow slurry pipe.

[0007] Preferably, the outer end of the middlings conveying pipe is connected to the back-scan conveying pipe, and the outer end of the overflow slurry pipe is connected to the back-scan conveying pipe.

[0008] Preferably, the lower part of one side of the hydrocyclone is connected to a sand slurry pipe.

[0009] Preferably, one side of the upper part of the flotation machine is connected to a tailings conveying pipe.

[0010] Preferably, a feed inlet is provided on one side of the buffer tank, and an overflow outlet is provided at the top of the other side of the buffer tank. The feed inlet is communicated with the bottom output end of the first flotation column, and the overflow outlet is communicated with the input end of the pulp pump.

[0011] Preferably, a plurality of buffer plates are arranged in the middle of the buffer tank, and the buffer plates are arranged in parallel at equal intervals.

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

[0013] In the phosphate ore flotation system for producing multi-quality phosphate concentrates, by innovatively integrating equipment such as ball mills, flotation columns, flotation machines, concentrate thickeners, buffer tanks, pulp pumps, and hydrocyclones, and optimizing its process flow, the goal of online production of multi-quality phosphate concentrates is achieved. This system not only improves the comprehensive utilization rate of phosphate ore resources, but also significantly enhances the flexibility and diversity of production, meeting the market demand for differentiated and high-quality phosphate chemical products. The system also realizes the smooth connection of each process link in the flotation process and the effective recovery of minerals through the ingenious design of pipelines such as the backwashing conveying pipe, middlings conveying pipe, and overflow pulp pipe. This not only reduces the loss of minerals, but also reduces production costs and improves the economic benefits of enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall system framework of the present utility model;

[0015] Figure 2 It is a schematic diagram of the connection of some equipment of the present utility model;

[0016] Figure 3 It is a schematic diagram of the internal structure of the buffer tank in the present utility model.

[0017] The meanings of the various reference numerals in the figure are as follows:

[0018] 1. Ball mill; 2. First flotation column; 3. Flotation machine; 31. Backwashing conveying pipe; 32. Tailings conveying pipe; 4. Concentrate thickener; 41. Concentrate conveying pipe; 5. Buffer tank; 51. Feed inlet; 52. Overflow outlet; 53. Buffer plate; 6. Pulp pump; 61. Pulp conveying pipe; 7. Second flotation column; 71. Middlings conveying pipe; 8. Hydrocyclone; 81. Overflow pulp pipe; 82. Sand pulp pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] The present invention provides a phosphate ore flotation system for producing multi-quality phosphate concentrate, as Figures 1 - 3 shown, which includes a ball mill 1. The output end of the ball mill 1 is connected to a first flotation column 2. One side of the top of the first flotation column 2 is connected to a flotation machine 3. One side of the bottom of the first flotation column 2 is connected to a concentrate thickener 4. One side of the bottom of the flotation machine 3 is connected to a reverse sweep conveying pipe 31. The other side of the bottom of the first flotation column 2 is connected to a buffer tank 5. A slurry pump 6 is installed at the output end of the buffer tank 5. The output end of the slurry pump 6 is connected to a second flotation column 7 through a slurry conveying pipe 61. One side of the top of the second flotation column 7 is connected to a middlings conveying pipe 71. One side of the bottom of the second flotation column 7 is connected to a hydrocyclone 8. The upper part of one side of the hydrocyclone 8 is connected to an overflow slurry pipe 81 for recovering the slurry.

[0021] In this embodiment, the output end of the concentrate thickener 4 is connected to a concentrate conveying pipe 41 for outputting the second-class phosphate concentrate.

[0022] Specifically, valves are installed on the reverse sweep conveying pipe 31, the middlings conveying pipe 71, and the overflow slurry pipe 81 to control the opening and closing of the pipeline discharge.

[0023] Further, the outer end of the middlings conveying pipe 71 is connected to the reverse sweep conveying pipe 31, and the outer end of the overflow slurry pipe 81 is connected to the reverse sweep conveying pipe 31 for slurry recovery, and the discharged slurry is the third-class slurry.

[0024] Further, the lower part of one side of the hydrocyclone 8 is connected to a sand slurry pipe 82 for discharging the sand slurry.

[0025] Further, the upper part of one side of the flotation machine 3 is connected to a tailings conveying pipe 32 for discharging the tailings.

[0026] Further, a feed inlet 51 is provided on one side of the buffer tank 5, and an overflow port 52 is provided at the top of the other side of the buffer tank 5. The feed inlet 51 is communicated with the bottom output end of the first flotation column 2, and the overflow port 52 is communicated with the input end of the slurry pump 6 for buffering the minerals and screening out the slurry through the overflow port 52.

[0027] Further, a number of buffer plates 53 are arranged in the middle of the buffer tank 5. The buffer plates 53 are arranged in parallel at equal intervals to settle the impurities in the minerals and further screen the floating minerals.

[0028] When the phosphate ore flotation system for producing multi-quality phosphate concentrate of the present utility model is in use, first, the original ore is ground by the ball mill 1 and broken into appropriate particle sizes, which helps the effective separation of minerals and gangue in the subsequent flotation process. The ground pulp enters the first flotation column 2. Under the action of the flotation machine 3, by adding flotation reagents, the useful minerals selectively adhere to the bubbles and float to form a foam layer, while impurities such as gangue remain in the pulp.

[0029] After preliminary flotation, the obtained foam layer is concentrated by the concentrate thickener 4 to further improve the grade of the concentrate. At the same time, the concentrate thickener 4 also outputs the second-class phosphate concentrate through the concentrate delivery pipe 41.

[0030] At the bottom of the first flotation column 2, the unselected pulp enters the buffer tank 5. A number of buffer plates 53 are arranged inside the buffer tank 5. The parallel and equally spaced arrangement of these buffer plates 53 helps the settlement of impurities in the minerals, enabling further screening of the floating minerals. After the buffering action of the buffer tank 5, the screened pulp enters the second flotation column 7 through the pulp pump 6 and the pulp delivery pipe 61 for secondary flotation.

[0031] In the second flotation column 7, by adjusting the types and dosages of flotation reagents, selective flotation of minerals with different grades can be achieved. After secondary flotation, the obtained foam layer is discharged through the middlings delivery pipe 71, while the unselected pulp enters the hydrocyclone 8 for classification.

[0032] The hydrocyclone 8 uses centrifugal force to divide the pulp into an overflow and a sand fraction. The overflow part is discharged through the overflow pulp pipe 81 and connected to the back-scan delivery pipe 31 for recovery; the sand fraction is discharged through the sand pulp pipe 82 and treated as tailings.

[0033] In addition, the flotation machine 3 also discharges the tailings through the tailings delivery pipe 32. The entire system controls the flow direction and discharge amount of the pulp through the valves on the back-scan delivery pipe 31, the middlings delivery pipe 71, the overflow pulp pipe 81 and other pipelines, realizing the effective recovery and classified discharge of minerals.

[0034] In summary, the phosphate ore flotation system for producing multi-quality phosphate concentrate of the present utility model realizes the efficient utilization of phosphate ore resources and the diversified production of phosphate chemical products through the organic combination and optimized configuration of technological processes such as grinding, flotation, concentration, and recovery.

[0035] Finally, it should be noted that for the first flotation column 2, flotation machine 3, second flotation column 7, etc. in this embodiment, the electronic components in the above components are all general standard components or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or obtained through conventional experimental methods. At the idle places of this device, all the above electrical components are respectively connected by wires. The specific connection means should refer to the sequence of operation of each electrical component in the above working principle to complete the electrical connection, which are all well-known technologies in the art.

[0036] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A phosphate ore flotation system for producing multi-quality phosphate concentrates, comprising a ball mill (1), characterized in that: The output end of the ball mill (1) is connected to a first flotation column (2), a top side of the first flotation column (2) is connected to a flotation machine (3), a bottom side of the first flotation column (2) is connected to a concentrate thickener (4), a bottom side of one side of the flotation machine (3) is connected to a backsweep conveying pipe (31), a bottom side of the first flotation column (2) is connected to a buffer tank (5), a slurry pump (6) is installed at the output end of the buffer tank (5), the output end of the slurry pump (6) is connected to a second flotation column (7) via a slurry conveying pipe (61), a top side of the second flotation column (7) is connected to a middling conveying pipe (71), a bottom side of the second flotation column (7) is connected to a cyclone (8), and an overflow slurry pipe (81) is connected to an upper part of one side of the cyclone (8).

2. The phosphate ore flotation system for producing multi-quality phosphate concentrate according to claim 1, characterized in that: The output end of the concentrate thickener (4) is connected to a concentrate conveying pipe (41).

3. The phosphate ore flotation system for producing multi-quality phosphate concentrate according to claim 1, characterized in that: Valves are installed on the back-sweeping conveying pipe (31), the intermediate ore conveying pipe (71) and the overflow ore slurry pipe (81).

4. The phosphate ore flotation system for producing multi-quality phosphate concentrate according to claim 1, characterized in that: The outer end of the intermediate ore conveying pipe (71) is connected to the back-sweeping conveying pipe (31), and the outer end of the overflow ore slurry pipe (81) is connected to the back-sweeping conveying pipe (31).

5. The phosphate ore flotation system for producing multi-quality phosphate concentrate according to claim 1, characterized in that: A grit slurry pipe (82) is connected to the lower part of one side of the cyclone (8).

6. The phosphate ore flotation system for producing multi-quality phosphate concentrate according to claim 1, characterized in that: A tailings conveying pipe (32) is connected to an upper portion of one side of the flotation machine (3).

7. The phosphate ore flotation system for producing multi-quality phosphate concentrate according to claim 1, characterized in that: A feed port (51) is provided on one side of the buffer tank (5), and an overflow port (52) is provided on the top of the other side of the buffer tank (5); the feed port (51) is connected to the bottom output end of the first flotation column (2), and the overflow port (52) is connected to the input end of the slurry pump (6).

8. The phosphate ore flotation system for producing multi-quality phosphate concentrate according to claim 7, characterized in that: A plurality of buffer plates (53) are arranged in the middle of the buffer groove (5), and the buffer plates (53) are arranged in parallel and at equal intervals.

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