A method for preparing modified fly ash material

Abstract

The invention discloses a method for preparing a modified fly ash material, comprising the steps of: S1, taking 70-80 parts by weight of fly ash, 22-18 parts by weight of silica gel and 0.5-2 parts by weight of sodium hexametaphosphate; S2, grinding the fly ash to 80-100um to obtain fly ash powder, grinding silica gel and sodium hexametaphosphate powder to 8-10um after mixing, and obtaining auxiliary material powder; S3, putting the auxiliary material powder into a drop bin, the bottom of the drop bin is provided with a plurality of evenly arranged leakage holes, and the fly ash powder moving laterally hits the auxiliary material powder moving vertically, so that the fly ash powder and the auxiliary material powder are mixed, and the mixed powder is collected by the conveying assembly arranged on the side of the mixing bin and transported to the outside of the mixing bin; S4, collecting the mixed powder, and sending the mixed powder into the dry pressing device for dry pressing molding. Compared with the prior art, the present invention can effectively improve the uniformity of raw material mixing, thereby reducing the probability of loose areas appearing inside the product.

Description

Technical Field

[0001] The invention relates to the technical field of fly ash materials, and in particular to a preparation method of modified fly ash materials. Background Art

[0002] Coal-fired power plants emit a large amount of fly ash every year, which has an adverse impact on the environment. In order to solve this problem, people began to consider how to effectively utilize fly ash. After long-term development and application, fly ash has been widely used in the field of construction and building materials related engineering, such as applying fly ash to roadbed paving, soil improvement and the manufacture of high-quality bricks.

[0003] When fly ash is used as a base material, it is necessary to add related materials. In the prior art, the raw materials are usually mixed by stirring. This mixing method cannot achieve sufficient mixing of fly ash and related raw materials. Uneven mixing may lead to loose local areas of the finished product formed in the later processing, thus affecting the product quality.

[0004] In view of this, a preparation method of modified fly ash material is proposed. Summary of the invention

[0005] The object of the present invention is to provide a method for preparing a modified fly ash material, which can effectively improve the uniformity of raw material mixing, thereby reducing the probability of loose areas appearing inside the product.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A method for preparing a modified fly ash material comprises the following steps:

[0008] S1, take 70-80 parts by weight of fly ash, 22-18 parts by weight of silica gel and 0.5-2 parts by weight of sodium hexametaphosphate;

[0009] S2, grinding fly ash to 80-100 um to obtain fly ash powder, mixing silica gel and sodium hexametaphosphate powder and grinding to 8-10 um to obtain auxiliary material powder;

[0010] S3, the auxiliary material powder is put into a feeding bin, the bottom of which is provided with a plurality of evenly arranged leakage holes, a mixing bin is provided below the feeding bin, the auxiliary material powder evenly falls into the mixing bin through the leakage holes, fly ash is sent into the mixing bin from the side of the mixing bin through a conveying pipe, the fly ash powder moving laterally collides with the auxiliary material powder moving vertically, so that the fly ash powder and the auxiliary material powder are mixed, the mixed powder is collected by a conveying assembly provided on the side of the mixing bin, and is conveyed to the outside of the mixing bin, and the powder falling to the bottom of the mixing bin is sent to the feeding bin through a return pipe;

[0011] S4, collecting the mixed powder, and sending the mixed powder to a dry pressing device for dry pressing.

[0012] According to the method for preparing a modified fly ash material as described in claim 1, it is characterized in that a first vibration motor is arranged on the drop bin, a support platform is arranged on the side wall of the mixing bin, a support spring is arranged on the support platform, and the support spring supports the drop bin, and during the mixing process, the drop bin is driven to vibrate by the first vibration motor.

[0013] In a preferred embodiment, the pressure applied by the dry pressing equipment during the dry pressing process is in the range of 2-4 MPa.

[0014] In a preferred embodiment, the conveying component includes a transport component and a plurality of collecting plates, and the plurality of collecting plates are transported by the transport component, and the collecting plate includes a fiber layer and an adsorption layer, and the fiber layer is arranged on the adsorption layer. After the collecting plate is transported out of the mixing bin, the collecting plate is removed, and then the collecting plate is sent to a fusion device, and the fusion device includes a flip frame, a pushing cylinder, a supporting frame, a first elastic support, a second vibration motor, a mounting frame, a plurality of fusion rods, a second elastic support and a first magnetic plate. The flip frame includes a flip axis and a flip frame, and the flip frame is connected to the flip axis. The pushing cylinder, the supporting frame, the first elastic support, the second vibration motor, the mounting frame, a plurality of fusion rods, the second elastic support and the first magnetic plate are arranged in the flip frame, and one end of the pushing cylinder is connected to the inner wall of the flip frame, and the other end is connected to the support The first elastic support connects the support frame and the mounting frame, the second vibration motor is arranged on the mounting frame, the multiple fusion rods are evenly installed on the side of the mounting frame, the second elastic support connects the first magnetic plate and the inner wall of the flip frame, and the mounting frame and the first magnetic plate are arranged relatively to each other; when the collecting plate is sent to the fusion device, the adsorption layer of the collecting plate is adsorbed on the first magnetic plate and is located below the fusion rod, and then the support frame is pushed to move by the pushing cylinder so that the fusion rod is inserted into the fiber layer, and then the second vibration motor is started to make the fusion rod vibrate for 10-15 minutes, and then the flip frame is rotated 180 degrees by the flip axis to continuously control the vibration of the fusion rod for 1-2 minutes, and the mixed powder dropped from the fiber layer is collected.

[0015] In a preferred embodiment, the fiber layer is formed by mixing polyester fiber, nylon fiber, acrylic fiber, polypropylene fiber or polyethylene fiber.

[0016] In a preferred embodiment, the first elastic support includes a first guide tube, a first guide rod and a first connecting spring, the first guide rod is inserted into the first guide tube, the first connecting spring is arranged in the first guide tube and connected to the first guide rod, and the second elastic support includes a second guide tube, a second guide rod and a second connecting spring, the second guide rod is inserted into the second guide tube, the second connecting spring is arranged in the second guide tube and connected to the second guide rod.

[0017] In a preferred embodiment, a slide rail is provided on the side of the flip frame, a slide groove is provided on the side of the support frame, and the slide rail cooperates with the slide groove.

[0018] In a preferred embodiment, the transport component includes a conveyor belt and a plurality of second magnetic plates, the conveyor belt passes through the mixing bin, and the plurality of second magnetic plates are evenly arranged on the surface of the conveyor belt. When mixing is performed, the adsorption layer is adsorbed on the first magnetic plate, and the collecting plate is moved by the conveyance of the conveyor belt. The mixed powder falls into the fiber layer and is transported out of the mixing bin.

[0019] In a preferred embodiment, the fusion rod comprises a rod body and a rough carbonized layer provided on the surface of the rod body, and the diameter of the fusion rod is set to 0.5-1 mm.

[0020] In a preferred embodiment, the rough carbonized layer is formed by carbonizing resin glue.

[0021] Compared with the prior art, the present invention proposes a preparation method of modified fly ash material. Under the setting, fly ash powder contacts auxiliary material powder by lateral impact. During the impact, the auxiliary material powder adheres to its surface, and then is collected by a conveying component and transported to the outside of a mixing bin for a subsequent dry pressing molding process. Such a setting enables the auxiliary material powder particles to adhere to the surface of the fly ash more evenly, so that during such a mixing process, the auxiliary material powder and the fly ash powder are evenly distributed, which solves the problem in the prior art that, under stirring, the remaining fly ash cannot be combined with the auxiliary material powder due to the aggregation of local auxiliary material powder and fly ash, thereby achieving uniform dispersion of fly ash powder and auxiliary material powder, which is beneficial to improving the quality of the finished material. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The invention relates to a structural schematic diagram of a mixing bin and a feeding bin used in a method for preparing a modified fly ash material.

[0023] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of part A.

[0024] Figure 3 The present invention relates to a structural schematic diagram of a fusion device in a forward state used in a method for preparing a modified fly ash material.

[0025] Figure 4 The present invention relates to a schematic structural diagram of a fusion device in a reverse state used in a method for preparing a modified fly ash material.

[0026] Figure 5 The present invention relates to a partial cross-sectional structural schematic diagram of a fusion rod used in a method for preparing a modified fly ash material.

[0027] In the figure

[0028] Dropping bin 1; first vibration motor 2; support platform 3; support spring 4; leakage hole 5; mixing bin 6; conveying pipeline 7; collecting plate 8; fiber layer 9; adsorption layer 10; pushing cylinder 11; support frame 12; first elastic support 13; second vibration motor 14; mounting frame 15; fusion rod 16; rod body 17; rough carbonized layer 18; second elastic support 19; first magnetic plate 20; turning shaft 21; turning frame 22; slide rail 23; slide trough 24; conveyor belt 25; second magnetic plate 26. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0030] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

[0031] like Figures 1 to 5 As shown, a method for preparing a modified fly ash material comprises the steps of:

[0032] S1, take 70-80 parts by weight of fly ash, 22-18 parts by weight of silica gel and 0.5-2 parts by weight of sodium hexametaphosphate;

[0033] S2, grinding fly ash to 80-100 um to obtain fly ash powder, mixing silica gel and sodium hexametaphosphate powder and grinding to 8-10 um to obtain auxiliary material powder;

[0034] S3, the auxiliary material powder is put into the drop bin 1, the bottom of the drop bin 1 is provided with a plurality of evenly arranged leakage holes 5, the lower part of the drop bin 1 is supported by a mixing bin 6, the auxiliary material powder evenly falls into the mixing bin 6 through the leakage holes 5, the fly ash is sent into the mixing bin 6 from the side of the mixing bin 6 through the conveying pipe 7, the fly ash powder moving laterally collides with the auxiliary material powder moving vertically, so that the fly ash powder and the auxiliary material powder are mixed, the mixed powder is collected by the conveying assembly arranged on the side of the mixing bin 6, and is conveyed to the outside of the mixing bin 6, and the powder falling to the bottom of the mixing bin 6 is sent to the drop bin 1 through the return pipe;

[0035] S4, collecting the mixed powder, and sending the mixed powder to a dry pressing device for dry pressing.

[0036] The present invention proposes a preparation method of modified fly ash material. Under the setting, fly ash powder contacts auxiliary material powder by lateral impact. During the impact, the auxiliary material powder adheres to its surface, and then is collected by a conveying component and transported to the outside of a mixing bin 6 for a subsequent dry pressing molding process. Such a setting enables the auxiliary material powder particles to adhere to the surface of the fly ash more evenly, so that during such a mixing process, the auxiliary material powder and the fly ash powder are evenly distributed, which solves the problem in the prior art that under stirring, the remaining fly ash cannot be combined with the auxiliary material powder due to the aggregation of local auxiliary material powder and fly ash, thereby achieving uniform dispersion of fly ash powder and auxiliary material powder, which is beneficial to improving the quality of the finished material.

[0037] In order to allow the auxiliary material powder to fall smoothly from the drop bin 1, a first vibration motor 2 is provided on the drop bin 1, a support platform 3 is provided on the side wall of the mixing bin 6, and a support spring 4 is provided on the support platform 3. The support spring 4 supports the drop bin 1. During the mixing process, the drop bin 1 is driven to vibrate by the first vibration motor 2.

[0038] Furthermore, the pressure applied by the dry pressing equipment during the dry pressing process is in the range of 2-4 MPa, thereby achieving highly stable structural molding.

[0039] In order to further improve the combination stability of fly ash and auxiliary material powder, the conveying component includes a conveying component and a plurality of collecting plates 8, the plurality of collecting plates 8 are conveyed by the conveying component, the collecting plate 8 includes a fiber layer 9 and an adsorption layer 10, the fiber layer 9 is arranged on the adsorption layer 10, after the collecting plate 8 is transported out of the mixing bin 6, the collecting plate 8 is removed, and then the collecting plate 8 is sent to the fusion device, the fusion device includes a turning frame, a pushing cylinder 11, a supporting frame 12, a first elastic support 13, a second vibration motor 14, a mounting frame 15, a plurality of fusion plug rods 16, a second elastic The flip frame includes a flip shaft 21 and a flip frame 22, the flip frame 22 is connected to the flip shaft 21, the push cylinder 11, the support frame 12, the first elastic support 13, the second vibration motor 14, the mounting frame 15, a plurality of fusion rods 16, the second elastic support 19 and the first magnetic plate 20 are arranged in the flip frame 22, one end of the push cylinder 11 is connected to the inner wall of the flip frame 22, and the other end is connected to the support frame 12, the first elastic support 13 is connected to the support frame 12 and the mounting frame 15, the second vibration motor 14 is connected to the first magnetic plate 20, and the flip frame includes a flip shaft 21 and a flip frame 22, the flip frame 22 is connected to the flip shaft 21, the push cylinder 11, the support frame 12, the first elastic support 13, the second vibration motor 14, the mounting frame 15, the second vibration motor 14 The plurality of fusion rods 16 are evenly mounted on the side of the mounting frame 15, the second elastic support 19 is connected to the first magnetic plate 20 and the inner wall of the flip frame 22, and the mounting frame 15 and the first magnetic plate 20 are arranged opposite to each other; when the collecting plate 8 is sent to the fusion device, the adsorption layer 10 of the collecting plate 8 is adsorbed on the first magnetic plate 20 and is located below the fusion rod 16, and then the support frame 12 is pushed by the pushing cylinder 11 to move, so that the fusion rod 16 is inserted into the fiber layer 9, and then the second elastic support 19 is started. The vibration motor 14 causes the fusion rod 16 to vibrate for 10-15 minutes. During the vibration process, the fusion rod 16, on the one hand, collides and rubs the combined particles of fly ash powder and auxiliary material powder attached to the fiber layer 9, so that they are tightly combined; on the other hand, during the vibration process, the fusion rod 16 knocks the adsorption layer 10 of the aggregate plate 8, so that the aggregate plate 8 vibrates, thereby causing the powder particles in the adsorption layer 10 to move and contact the fusion rod 16 during the movement, thereby preventing some particles from being unable to be affected by the pressure due to the mismatch with the position of the fusion rod 16.

[0040] After the above process is completed, the flip frame is then rotated 180 degrees through the flip shaft 21, the fusion rod 16 is continuously controlled to vibrate for 1-2 minutes, and the mixed powder dropped from the fiber layer 9 is collected. In this process, the fusion rod 16 contacts the adsorption layer 10 during the vibration process, causing the collection plate 8 to vibrate. When the collection plate 8 vibrates, the powder particles in the adsorption layer 10 fall.

[0041] Furthermore, the fiber layer 9 is formed by mixing polyester fiber, nylon fiber, acrylic fiber, polypropylene fiber or polyethylene fiber.

[0042] Further, the first elastic support 13 includes a first guide tube, a first guide rod and a first connecting spring, the first guide rod is inserted into the first guide tube, the first connecting spring is arranged in the first guide tube and connected to the first guide rod, so as to realize elastic support of the mounting frame 15, and the second elastic support 19 includes a second guide tube, a second guide rod and a second connecting spring, the second guide rod is inserted into the second guide tube, the second connecting spring is arranged in the second guide tube and connected to the second guide rod, so as to realize elastic support of the first magnetic plate 20.

[0043] Furthermore, in order to stabilize the movement of the support frame 12 , a slide rail 23 is provided on the side of the flip frame 22 , and a slide groove 24 is provided on the side of the support frame 12 , and the slide rail 23 cooperates with the slide groove 24 .

[0044] Furthermore, the transport component includes a conveyor belt 25 and a plurality of second magnetic plates 26, the conveyor belt 25 passes through the mixing bin 6, and the plurality of second magnetic plates 26 are evenly arranged on the surface of the conveyor belt 25. When mixing, the adsorption layer 10 is adsorbed on the first magnetic plate 20, and the collecting plate 8 is moved through the transport of the conveyor belt 25, and the mixed powder falls into the fiber layer 9 and is transported out of the mixing bin 6, thereby realizing efficient transportation of the mixed powder.

[0045] Furthermore, the fusion rod 16 includes a rod body 17 and a rough carbonized layer 18 provided on the surface of the rod body 17. The diameter of the fusion rod 16 is set to 0.5-1 mm. After the rough carbonized layer 18 is provided, during the unloading process, the rough surface can effectively drive the powder particles to move, thereby realizing efficient unloading of the powder particles.

[0046] Specifically, the rough carbonized layer 18 is formed by carbonizing the resin glue.

[0047] In order to limit the leakage of powder particles from the fiber layer 9, corresponding baffles may be provided on the sides of the fiber layer 9, the structure of which is not shown in the drawings.

[0048] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "include..." or "comprise..." do not exclude the existence of other elements in the process, method, article or terminal device including the elements. In addition, in this article, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself.

[0049] The above description of the embodiments is to facilitate the understanding and use of the present invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to the embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A method for preparing a modified fly ash material, characterized in that: Includes steps: S1, take 70-80 parts by weight of fly ash, 22-18 parts by weight of silica gel and 0.5-2 parts by weight of sodium hexametaphosphate; S2, grinding fly ash to 80-100 um to obtain fly ash powder, mixing silica gel and sodium hexametaphosphate powder and grinding to 8-10 um to obtain auxiliary material powder; S3, the auxiliary material powder is put into a feeding bin, the bottom of which is provided with a plurality of evenly arranged leakage holes, a mixing bin is provided below the feeding bin, the auxiliary material powder evenly falls into the mixing bin through the leakage holes, fly ash is sent into the mixing bin from the side of the mixing bin through a conveying pipe, the fly ash powder moving laterally collides with the auxiliary material powder moving vertically, so that the fly ash powder and the auxiliary material powder are mixed, the mixed powder is collected by a conveying assembly provided on the side of the mixing bin, and is conveyed to the outside of the mixing bin, and the powder falling to the bottom of the mixing bin is sent to the feeding bin through a return pipe; S4, collecting the mixed powder, and sending the mixed powder to a dry pressing device for dry pressing.

2. The method for preparing a modified fly ash material according to claim 1, characterized in that: The material dropping bin is provided with a first vibration motor, the side wall of the mixing bin is provided with a support platform, the support platform is provided with a support spring, the support spring supports the material dropping bin, and during the mixing process, the material dropping bin is driven to vibrate by the first vibration motor.

3. The method for preparing a modified fly ash material according to claim 1, characterized in that: The pressure applied by the dry pressing equipment during the dry pressing process ranges from 2 to 4 MPa.

4. The method for preparing a modified fly ash material according to claim 1, characterized in that: The conveying assembly includes a transport assembly and a plurality of material collecting plates, the plurality of material collecting plates are transported by the transport assembly, the material collecting plate includes a fiber layer and an adsorption layer, the fiber layer is arranged on the adsorption layer, after the material collecting plate is transported out of the mixing bin, the material collecting plate is removed, and then the material collecting plate is sent to a fusion device, the fusion device includes a flip frame, a pushing cylinder, a supporting frame, a first elastic support, a second vibration motor, a mounting frame, a plurality of fusion plugs, a second elastic support and a first magnetic plate, the flip frame includes a flip axis and a flip frame, the flip frame is connected to the flip axis, the pushing cylinder, the supporting frame, the first elastic support, the second vibration motor, the mounting frame, a plurality of fusion plugs, the second elastic support and the first magnetic plate are arranged in the flip frame, one end of the pushing cylinder is connected to the inner wall of the flip frame, and the other end is connected to the supporting frame, An elastic support connects the support frame and the mounting frame, the second vibration motor is arranged on the mounting frame, the multiple fusion rods are evenly installed on the side of the mounting frame, the second elastic support connects the first magnetic plate and the inner wall of the flip frame, and the mounting frame and the first magnetic plate are arranged opposite to each other; when the collecting plate is sent to the fusion device, the adsorption layer of the collecting plate is adsorbed on the first magnetic plate and is located below the fusion rod, and then the support frame is pushed to move by the pushing cylinder so that the fusion rod is inserted into the fiber layer, and then the second vibration motor is started to make the fusion rod vibrate for 10-15 minutes, and then the flip frame is rotated 180 degrees by the flip axis to continuously control the vibration of the fusion rod for 1-2 minutes, and the mixed powder falling from the fiber layer is collected.

5. The method for preparing a modified fly ash material according to claim 4, characterized in that: The fiber layer is formed by mixing polyester fiber, nylon fiber, acrylic fiber, polypropylene fiber or polyethylene fiber.

6. The method for preparing a modified fly ash material according to claim 4, characterized in that: The first elastic support includes a first guide tube, a first guide rod and a first connecting spring, the first guide rod is inserted into the first guide tube, the first connecting spring is arranged in the first guide tube and connected to the first guide rod, and the second elastic support includes a second guide tube, a second guide rod and a second connecting spring, the second guide rod is inserted into the second guide tube, the second connecting spring is arranged in the second guide tube and connected to the second guide rod.

7. The method for preparing a modified fly ash material according to claim 4, characterized in that: The side of the flip frame is provided with a slide rail, the side of the support frame is provided with a slide groove, and the slide rail matches the slide groove.

8. The method for preparing a modified fly ash material according to claim 4, characterized in that: The transport component includes a conveyor belt and a plurality of second magnetic plates. The conveyor belt passes through the mixing bin. The plurality of second magnetic plates are evenly arranged on the surface of the conveyor belt. When mixing, the adsorption layer is adsorbed on the first magnetic plate, and the collecting plate moves through the transport of the conveyor belt. The mixed powder falls into the fiber layer and is transported out of the mixing bin.

9. The method for preparing a modified fly ash material according to claim 4, characterized in that: The fusion rod comprises a rod body and a rough carbonized layer arranged on the surface of the rod body. The diameter of the fusion rod is set to 0.5-1 mm.

10. The method for preparing a modified fly ash material according to claim 9, characterized in that: The rough carbonized layer is formed after the resin glue is carbonized.

Images