Particle pre-activation system and use method

Abstract

The invention relates to the technical field of smelting materials, and particularly discloses a particle pre-activation system and a using method.The particle pre-activation system comprises a mechanical pre-activation device, and the mechanical pre-activation device comprises an activation container; a pre-activation buffer tank is mounted on the activation container; the circulating mechanism comprises a circulating pump, a first circulating pipe and a second circulating pipe, the first circulating pipe and the second circulating pipe are provided with a second valve and a third valve respectively, the first circulating pipe is mounted at the bottom of the pre-activation buffer tank, and the second circulating pipe is mounted on the activation container and communicated with the activation area; through opening and closing of a second valve and a third valve in the circulating mechanism and matching with a first valve, the raw materials subjected to primary grinding and activation can enter the machine pre-activation device again through the circulating mechanism to be ground and pre-activated, and compared with the prior art, the raw materials with overlarge particles can be ground circularly, so that the overall particle size distribution of the raw materials is optimized.

Description

Technical Field

[0001] The invention relates to the technical field of smelting materials, and in particular to a particle preactivation system and a use method thereof. Background Art

[0002] In the field of pre-activation of smelting material raw material processing, there are two conventional routes: one is to use dry ultra-fine crushing (such as high-pressure roller mill or Raymond mill) + wind classification to prepare qualified particle size materials and then enter the mixing barrel for pre-activation and slurry adjustment to pre-activate the particles of mineral raw materials; the other is to use an extended multi-bin wet ball mill for particle pre-activation.

[0003] In the dry pre-activation route, the high-pressure roller mill and Raymond mill usually have a low powder production rate. After one pass, only about 10% to 20% of the -325 mesh powder is produced. A high-power wind classifier is needed for classification, and the coarse particles are returned for reverse powder production. The return sand ratio is generally more than 500%. From the perspective of equipment configuration, the power of the wind classifier is usually greater than that of the powder-making host, and the powder-making efficiency is low. In addition, the moisture content of the material and the moisture in the air are required to be high. Powder with too high moisture content is easy to agglomerate and block the pipeline, resulting in a poor production process.

[0004] The wet pre-activation route usually uses multi-bin fine grinding to improve the pre-activation fineness of particles. In the actual production process, it is easy for particles to be too large and over-crushed, and the overall particle size distribution is poor, which affects the activation efficiency.

[0005] In order to solve the above-mentioned technical difficulties in preactivation of metallurgical raw material particles, a particle preactivation device system that can realize intermittent and continuous dual-purposes has been developed. It adopts wet fine grinding preactivation operation and has no requirements on the moisture content of powder materials. It realizes the matching of vertical intelligent activation device with pump and piping system. Continuous fine grinding preactivation can be achieved by adjusting the switch of the valve combination, and intermittent batch preactivation can also be achieved. The design of one machine with two uses simplifies the production process and realizes energy saving and consumption reduction in the industry, which is of great significance. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a particle preactivation system and a method of use.

[0007] The particle preactivation system of the present invention comprises a mechanical preactivation device, wherein the mechanical preactivation device comprises an activation container, wherein an activation zone and a settling zone are arranged inside the activation container, and a grading component is arranged between the activation zone and the settling zone;

[0008] A pre-activation buffer box is installed on the activation container, the pre-activation buffer box is connected to the discharge port of the activation container, an overflow port is provided on the pre-activation buffer box, and the overflow port is connected to the discharge pipe through a first valve;

[0009] A circulation mechanism, wherein the circulation mechanism comprises a circulation pump, and a first circulation pipe and a second circulation pipe, wherein the first circulation pipe and the second circulation pipe are respectively provided with a second valve and a third valve, wherein the first circulation pipe is installed at the bottom of the pre-activation buffer tank, and the second circulation pipe is installed on the activation container and is connected to the activation zone;

[0010] A discharge port is provided between the activation container and the third valve.

[0011] Furthermore, the mechanical pre-activation device also includes a grinding mechanism, which includes a stirring frame and grinding balls. The stirring frame and grinding balls are both located in the activation zone of the activation container, and a ball discharge port for discharging the grinding balls is opened at the bottom of the side of the activation container.

[0012] Furthermore, the activation container is a vertical container, the stirring frame is vertically installed in the center of the activation container, and a driving motor for driving the stirring frame to rotate is installed on the top of the activation container, and the stirring frame is located inside the activation zone and is provided with stirring blades.

[0013] Furthermore, the mechanical preactivation device also includes a mixing feed inlet, which is connected to the activation zone of the activation container, and the discharge port of the activation container is arranged on the side of the activation container near the top;

[0014] The mixing feed port is connected with a first adding pipeline for adding the pre-activated solution and a second adding pipeline for adding the pre-activated raw material; the first adding pipeline is installed with a fourth valve.

[0015] Furthermore, the grading assembly includes an annular partition installed on the activation container, and the inner wall edge of the annular partition is fixedly connected to a conical tube sleeved on the stirring frame.

[0016] Furthermore, the interior of the pre-activation buffer box is provided with an adjusting inclined plate and an adjusting mechanism, one end of the adjusting inclined plate away from the overflow port is rotatably connected to the bottom of the inner wall of the pre-activation buffer box, and the other end of the adjusting inclined plate is suspended and forms an angle a with the bottom of the pre-activation buffer box, and the adjusting mechanism is used to adjust the size of the angle a.

[0017] Furthermore, the adjustment mechanism is an adjustment screw, the bottom inner wall of the pre-activation buffer box is provided with a connecting ear, the adjustment screw is inserted into the connecting ear and fixedly connected to the bottom of the adjustment inclined plate, and one end of the adjustment screw movably penetrates the surface of the pre-activation buffer box.

[0018] Furthermore, a settling port for installing the first circulation pipe is provided at the bottom of the pre-activation buffer tank, and the regulating inclined plate is installed at the edge of the settling port.

[0019] A method for using intermittent grinding preactivation in a particle preactivation system:

[0020] S1, open the second valve on the first circulation pipe, and the third valve on the second circulation pipe, and close the first valve, and then start the circulation pump;

[0021] S2, give the mechanical pre-activation device a quantitative grinding pre-activation time, so that the material in the mechanical pre-activation device is ground to a qualified fineness, thereby meeting the pre-activation requirements, and then close the circulation pump;

[0022] S3. Open the discharge port to allow the material to flow out of the second circulation pipe, and then use the container to load the qualified material.

[0023] S4. Add clean water to the mechanical preactivation device through the first adding pipe or the second adding pipe, then turn on the circulation pump to clean the mechanical preactivation device and the materials remaining in the first circulation pipe and the second circulation pipe, and discharge them through the discharge port on the second circulation pipe.

[0024] A method for using a continuous grinding preactivation system for a particle preactivation system,

[0025] S1, open the second valve on the first circulation pipe, the third valve on the second circulation pipe, and the first valve, and then start the circulation pump to achieve uniform circulation and grinding pre-activation of the material;

[0026] S2. When the grinding preactivation solution added through the first addition pipeline and the raw materials added through the second addition pipeline exceed the maximum volume that the mechanical preactivation device can accommodate, the preactivated slurry with qualified particle size flows from the preactivation buffer box and the discharge pipeline to the subsequent process.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. The present invention adds medium during the operation of the mechanical pre-activation device to reduce the fineness of metallurgical material particles, thereby achieving the purpose of pre-activation. The second valve and the third valve in the circulation mechanism cooperate with the opening and closing of the first valve to allow the raw materials that have been initially ground and activated to enter the machine pre-activation device through the circulation mechanism again for grinding and pre-activation. Compared with the prior art, the raw materials with oversized particles can be circulated and ground, thereby optimizing the overall particle size distribution of the raw materials.

[0029] 2. The present invention realizes continuous fine grinding pre-activation or intermittent batch pre-activation through the opening and closing of the first valve in the circulation mechanism in coordination with the second valve and the third valve. In the process of continuous fine grinding pre-activation, the raw materials activated by the mechanical pre-activation device will settle and separate again in the pre-activation buffer box through the setting of the pre-activation buffer box, so that the raw materials with larger particles can enter the mechanical pre-activation device for re-grinding and activation after passing through the circulation mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 It is a schematic diagram of the system structure of the present invention;

[0032] Figure 2 It is a schematic diagram of the front cross-section structure of the mechanical preactivation device of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the pre-activation buffer box of the present invention.

[0034] In the figure: 1, first adding pipeline; 2, second adding pipeline;

[0035] 3. Mechanical pre-activation device; 31. Activation container; 32. Activation zone; 33. Settling zone;

[0036] 34. grading assembly; 341. annular partition; 342. conical tube;

[0037] 35. Stirring frame; 36. Stirring blades; 37. Driving motor; 38. Grinding balls; 39. Discharging port;

[0038] 4. Mixing feed port; 5. Volleyball port;

[0039] 6. Pre-activation buffer tank; 61. Overflow port; 62. Adjustment inclined plate; 63. Adjustment mechanism; 64. Settling port;

[0040] 7. First valve; 8. Discharge pipe; 9. First circulation pipe; 10. Circulation pump; 11. Second circulation pipe; 12. Second valve; 13. Third valve; 14. Fourth valve; 15. Discharge port. DETAILED DESCRIPTION

[0041] The following will disclose multiple embodiments of the present invention with drawings. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be depicted in a simple schematic manner in the drawings.

[0042] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] See also Figure 1-Figure 3 The particle preactivation system and use method of the present invention include a mechanical preactivation device 3, wherein the mechanical preactivation device 3 includes an activation container 31, an activation zone 32 and a settling zone 33 are arranged inside the activation container 31, and a grading component 34 is arranged between the activation zone 32 and the settling zone 33;

[0044] A pre-activation buffer box 6 is installed on the activation container 31, and the pre-activation buffer box 6 is connected to the discharge port 39 of the activation container 31. The pre-activation buffer box 6 is provided with an overflow port 61, and the overflow port 61 is connected to the discharge pipe 8 through a first valve 7;

[0045] The circulation mechanism includes a circulation pump 10, a first circulation pipe 9 and a second circulation pipe 11. The first circulation pipe 9 and the second circulation pipe 11 are respectively provided with a second valve 12 and a third valve 13. The first circulation pipe 9 is installed at the bottom of the pre-activation buffer tank 6, and the second circulation pipe 11 is installed on the activation container 31 and communicates with the activation area 32.

[0046] A discharge port 15 is provided between the activation container 31 and the third valve 13 .

[0047] The mechanical pre-activation device 3 also includes a grinding mechanism, which includes a stirring frame 35 and grinding balls 38. The stirring frame 35 and the grinding balls 38 are both located in the activation area 32 of the activation container 31. A ball discharge port 5 for discharging the grinding balls 38 is opened at the bottom of the side of the activation container 31.

[0048] The activation container 31 is a vertical container, a stirring frame 35 is vertically installed in the center of the activation container 31, and a driving motor 37 for driving the stirring frame 35 to rotate is installed on the top of the activation container 31. The stirring frame 35 is located inside the activation area 32 and is provided with stirring blades 36.

[0049] The mechanical pre-activation device 3 further includes a mixing feed port 4, which is connected to the activation zone 32 of the activation container 31, and a discharge port 39 of the activation container 31 is arranged on the side of the activation container 31 near the top;

[0050] The mixing feed port 4 is connected with a first adding pipeline 1 for adding the pre-activated solution and a second adding pipeline 2 for adding the pre-activated raw material; the first adding pipeline 1 is installed with a fourth valve 14 .

[0051] The grading assembly 34 includes an annular partition 341 installed on the activation container 31 , and a conical tube 342 sleeved on the stirring frame 35 is fixedly connected to the inner wall edge of the annular partition 341 .

[0052] The interior of the pre-activation buffer box 6 is provided with an adjusting inclined plate 62 and an adjusting mechanism 63. One end of the adjusting inclined plate 62 away from the overflow port 61 is rotatably connected to the bottom of the inner wall of the pre-activation buffer box 6, and the other end of the adjusting inclined plate 62 is suspended and forms an angle a with the bottom of the pre-activation buffer box 6. The adjusting mechanism 63 is used to adjust the size of the angle a.

[0053] The adjusting mechanism 63 is an adjusting screw. The bottom inner wall of the pre-activation buffer box 6 is provided with a connecting ear. The adjusting screw is inserted into the connecting ear and fixed to the bottom of the adjusting inclined plate 62. One end of the adjusting screw movably penetrates the surface of the pre-activation buffer box 6.

[0054] A settling port 64 for installing the first circulation pipe 9 is provided at the bottom of the pre-activation buffer box 6 , and the adjusting inclined plate 62 is installed at the edge of the settling port 64 .

[0055] A method for using intermittent grinding preactivation in a particle preactivation system:

[0056] S1, open the second valve 12 on the first circulation pipe 9, and the third valve 13 on the second circulation pipe 11, and close the first valve 7, and then start the circulation pump 10;

[0057] S2, give the mechanical preactivation device 3 a quantitative grinding preactivation time, so that the material in the mechanical preactivation device 3 is ground to a qualified fineness, thereby meeting the preactivation requirements, and then close the circulation pump 10;

[0058] S3, open the discharge port 15 to allow the material to flow out of the second circulation pipe 11, and then use a container to take the qualified material.

[0059] S4. Add clean water to the mechanical preactivation device 3 through the first addition pipeline 1 or the second addition pipeline 2, and then turn on the circulation pump 10 to clean the mechanical preactivation device 3 and the residual materials in the first circulation pipe 9 and the second circulation pipe 11, and discharge them through the discharge port 15 on the second circulation pipe 11.

[0060] A method for using continuous grinding preactivation of a particle preactivation system:

[0061] S1, open the second valve 12 on the first circulation pipe 9, the third valve 13 on the second circulation pipe 11, and the first valve 7, and then start the circulation pump 10, so that the material can be circulated and evenly ground for pre-activation;

[0062] S2. When the grinding preactivation solution added through the first addition pipeline 1 and the raw materials added through the second addition pipeline 2 exceed the maximum volume that the mechanical preactivation device 3 can accommodate, the preactivated slurry with qualified particle size flows from the preactivation buffer box 6 and the discharge pipeline 8 to the subsequent process.

[0063] In the above-mentioned intermittent grinding preactivation method or continuous grinding preactivation method, the raw materials need to be weighed and then fed into the mechanical preactivation device 3, and the calculated water is added to form a slurry ratio with a suitable concentration, and the mechanical preactivation device 3 is turned on for fine grinding preactivation.

[0064] When the mechanical pre-activation device 3 is in use, when the ore pulp and the grinding balls 38 pass through the conical tube 342 of the grading component 34, the coarse-grained materials in the ore pulp and the grinding balls 38 are centrifuged to the edge of the activation container 31 by the action of centrifugal force and sink, and the fine-grained materials pass through the grading component 34 and rise to the discharge port 39 through the pores on the conical tube 342 and the annular partition 341 to enter the pre-activation buffer box 6. The raw materials entering the pre-activation buffer box 6 will be blocked by the adjusting inclined plate 62 and settle again. The raw materials that have settled again are injected into the mechanical pre-activation device 3 through the circulation mechanism and ground again.

[0065] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A particle preactivation system, characterized in that: include: The mechanical pre-activation device (3) comprises an activation container (31), wherein an activation zone (32) and a settling zone (33) are provided inside the activation container (31), and a grading component (34) is provided between the activation zone (32) and the settling zone (33); A pre-activation buffer box (6) is installed on the activation container (31), the pre-activation buffer box (6) is connected to the discharge port (39) of the activation container (31), and an overflow port (61) is provided on the pre-activation buffer box (6), and the overflow port (61) is connected to the discharge pipe (8) through a first valve (7); A circulation mechanism, the circulation mechanism comprising a circulation pump (10), and a first circulation pipe (9) and a second circulation pipe (11), the first circulation pipe (9) and the second circulation pipe (11) are respectively provided with a second valve (12) and a third valve (13), the first circulation pipe (9) is installed at the bottom of the pre-activation buffer tank (6), and the second circulation pipe (11) is installed on the activation container (31) and is connected to the activation area (32); A discharge port (15) is provided between the activation container (31) and the third valve (13).

2. A particle preactivation system according to claim 1, characterized in that: The mechanical pre-activation device (3) also includes a grinding mechanism, which includes a stirring frame (35) and grinding balls (38). The stirring frame (35) and the grinding balls (38) are both located in the activation area (32) of the activation container (31). A ball discharge port (5) for discharging the grinding balls (38) is provided at the bottom of the side of the activation container (31).

3. A particle preactivation system according to claim 2, characterized in that: The activation container (31) is a vertical container, the stirring frame (35) is vertically installed in the center of the activation container (31), and a driving motor (37) for driving the stirring frame (35) to rotate is installed on the top of the activation container (31), and the stirring frame (35) is located inside the activation area (32) and is provided with stirring blades (36).

4. A particle preactivation system according to claim 1, characterized in that: The mechanical preactivation device (3) further comprises a mixing feed port (4), wherein the mixing feed port (4) is connected to the activation zone (32) of the activation container (31), and the discharge port (39) of the activation container (31) is arranged on the side of the activation container (31) near the top; The mixing feed port (4) is connected to a first adding pipeline (1) for adding a pre-activated solution and a second adding pipeline (2) for adding a pre-activated raw material; a fourth valve (14) is installed on the first adding pipeline (1).

5. A particle preactivation system according to claim 1, characterized in that: The grading assembly (34) comprises an annular partition (341) mounted on the activation container (31), and the inner wall edge of the annular partition (341) is fixedly connected to a conical tube (342) sleeved on the stirring frame (35).

6. A particle preactivation system according to claim 1, characterized in that: An adjusting inclined plate (62) and an adjusting mechanism (63) are provided inside the pre-activation buffer box (6); one end of the adjusting inclined plate (62) away from the overflow port (61) is rotatably connected to the bottom of the inner wall of the pre-activation buffer box (6); the other end of the adjusting inclined plate (62) is suspended in the air and forms an angle a with the bottom of the pre-activation buffer box (6); the adjusting mechanism (63) is used to adjust the size of the angle a.

7. A particle preactivation system according to claim 6, characterized in that: The adjusting mechanism (63) is an adjusting screw. The bottom inner wall of the pre-activation buffer box (6) is provided with a connecting ear. The adjusting screw is inserted into the connecting ear and is fixedly connected to the bottom of the adjusting inclined plate (62). One end of the adjusting screw movably penetrates the surface of the pre-activation buffer box (6).

8. A particle preactivation system according to claim 1, characterized in that: The bottom of the pre-activation buffer box (6) is provided with a settling port (64) for installing the first circulation pipe (9), and the regulating inclined plate (62) is installed on the edge of the settling port (64).

9. A method for using a particle preactivation system, characterized in that: S1, opening the second valve (12) on the first circulation pipe (9) and the third valve (13) on the second circulation pipe (11), closing the first valve (7), and then starting the circulation pump (10); S2, giving the mechanical preactivation device (3) a quantitative grinding preactivation time, so that the material in the mechanical preactivation device (3) is ground to a qualified fineness, thereby meeting the preactivation requirements, and then closing the circulation pump (10); S3. Open the discharge port (15) to allow the material to flow out of the second circulation pipe (11), and then use a container to collect qualified materials. S4. Add clean water to the mechanical preactivation device (3) through the first addition pipe (1) or the second addition pipe (2), then turn on the circulation pump (10) to clean the mechanical preactivation device (3) and the materials remaining in the first circulation pipe (9) and the second circulation pipe (11), and discharge them through the discharge port (15) on the second circulation pipe (11).

10. A method for using a particle preactivation system, characterized in that: S1, opening the second valve (12) on the first circulation pipe (9), the third valve (13) on the second circulation pipe (11), and the first valve (7), and then starting the circulation pump (10), so that the material can be circulated and uniformly ground for pre-activation; S2. When the grinding preactivation solution added through the first addition pipeline (1) and the raw materials added through the second addition pipeline (2) exceed the maximum volume that the mechanical preactivation device (3) can accommodate, the preactivated slurry with a qualified particle size flows from the preactivation buffer box (6) and the discharge pipeline (8) to the subsequent process.

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