Equipment and method for preparing cement lightweight aggregate by using power plant incineration slag

Abstract

The invention discloses equipment and a method for preparing cement lightweight aggregate by using power plant incineration slag, the equipment comprises a bottom frame, a mounting rail arranged on the bottom frame, and a long plate and an elliptical plate which are respectively arranged at the upper part and the middle part of the mounting rail, a transmission groove formed in the long plate and the elliptical plate jointly form a transmission groove, and the transmission groove is communicated with the mounting rail. A chain wheel transmission assembly is arranged in the transmission groove. The preparation mixing basket assemblies are arranged on the front side of the chain wheel transmission assembly and can be kept horizontal. Through the sequential action of the preparation mixing basket assembly, the pretreatment device and the mixing material preparation device, the pretreated furnace slag can effectively reduce the content of residual metal AI and sulfide in the furnace slag, further under the action of the mixing material preparation device, the apparent density of mixed sand is reduced to a certain extent, and particles are matched with one another to fill gaps; gradation is improved, the void ratio is reduced, and the performance of mixed sand is improved.

Description

Technical Field

[0001] The invention relates to the technical field of slag utilization, and in particular to a device and a method for preparing cement lightweight aggregate by utilizing slag incinerated in a power plant. Background Art

[0002] The slag from the incineration of domestic waste is composed of the domestic waste residue directly discharged from the furnace and the ash discharged from the superheater and economizer. It is the largest by-product produced in the entire waste incineration process. The slag from the incineration of domestic waste has been partially used in many fields such as road engineering, cement production, aggregate preparation and fertilizer production.

[0003] A large number of experiments have proved that, first, when used as concrete admixture and aggregate, it will not produce obvious environmental impact and has certain environmental protection significance; second, a small amount of residual metal AI will dissolve in an alkaline environment to generate gas, and may cause the formation of other expansive substances. When domestic waste incineration slag is used in the field of cement concrete, it may cause cracking and peeling of the test specimens.

[0004] Based on the above, a device and method for preparing lightweight cement aggregate using power plant incineration slag are provided. Summary of the invention

[0005] The purpose of the present invention is to provide an apparatus and method for preparing lightweight cement aggregate using slag from power plant incineration. By preparing a mixing basket assembly, a pretreatment device, and a mixing and material-making device in sequence, the pretreated slag can effectively reduce the residual metal AI and sulfide content in the slag. Further, under the action of the mixing and material-making device, the apparent density of the mixed sand is reduced, and the particles are matched with each other to fill the gaps, which is beneficial to improving the grading, reducing the void ratio, and improving the performance of the mixed sand.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an apparatus for preparing cement lightweight aggregate by using slag from power plant incineration, comprising: a base frame, a mounting track arranged on the base frame, and a long plate and an elliptical plate respectively arranged on the upper part and the middle part of the mounting track, wherein the transmission groove provided on the long plate and the elliptical plate together constitute a transmission groove, and a sprocket transmission assembly is arranged inside the transmission groove; it also comprises a plurality of preparation mixing basket assemblies arranged on the front side of the sprocket transmission assembly and capable of maintaining horizontality, for placing the slag; the base frame is provided with a pretreatment device and a mixing material making device in sequence along the advancing direction of the mounting track, wherein the pretreatment device comprises a soaking tank assembly and a flushing nozzle assembly, and the soaking tank assembly is provided with a treatment solution, and when the sprocket transmission assembly drives one of the preparation mixing basket assemblies to act with the soaking tank assembly and the flushing nozzle assembly in sequence, the pretreated slag can be formed; when the sprocket transmission assembly drives the pretreated slag for a second time and acts with the mixing material making device, the pretreated slag can be mixed with fine sand and made into mortar fine aggregate.

[0007] Preferably, each preparation mixing basket assembly consists of a mounting bar, a stirring ring assembly and a placing frame assembly arranged at the bottom of the mounting bar, wherein the stirring ring assembly and the placing frame assembly are distributed inside and outside; the placing frame assembly includes a mounting ring, and two first electric telescopic rods arranged at the bottom of the mounting ring, two mounting blocks fixed at the output ends of the two first electric telescopic rods, which are connected with two groups of circular rings through mounting columns respectively arranged at opposite ends, each group of circular rings includes two circular rings, one of the arc frames is fixed between the two inner circular rings, and the other arc frame is arranged between the two outer circular rings; it also includes a meshing transmission assembly, which is used to drive the two arc frames to merge or expand.

[0008] Preferably, the meshing transmission assembly is provided with two groups, each group of the meshing transmission assembly includes a connecting rod fixed at the bottom of the mounting ring, and a rack arranged at the lower part of the connecting rod; it also includes arc-shaped teeth fixed on the outer wall of each of the arc-shaped frames, and the arc-shaped teeth mesh with their corresponding racks.

[0009] Preferably, the stirring ring assembly includes a second motor fixed to the bottom of the mounting bar, a second electric telescopic rod arranged at the output end of the second motor; and a stirring rod arranged at the telescopic end of the second electric telescopic rod, with disc-shaped rods arranged at both ends of the stirring rod, wherein the bottom end of the disc-shaped rod extends between the two arc frames; and also includes two V-shaped rods arranged at the bottom of the stirring rod.

[0010] Preferably, the mounting track comprises an electric slide rail fixed on the upper surface of the base frame, and an electric skateboard slidably mounted inside the electric slide rail, wherein the long board is arranged on the front side of the electric skateboard.

[0011] Preferably, the sprocket transmission assembly includes a first transmission assembly and a second transmission assembly with the same structure, and the first transmission assembly and the second transmission assembly are respectively arranged on the front sides of the long board and the electric skateboard; the first transmission assembly is composed of two transmission teeth rotatably connected to the upper and lower sides of the long board, and a transmission chain body sleeved on the two transmission teeth; and a plurality of transmission components arranged inside the transmission groove, wherein each transmission component includes a transmission column, two transmission blocks fixed at both ends of the transmission column, and a transmission shaft respectively fixing the two transmission blocks on opposite sides, and two centrally symmetrical transmission shafts are respectively connected to the transmission chain body where the first transmission assembly and the second transmission assembly are located through transmission members rotatably mounted thereon, wherein the transmission shaft connected to the first transmission assembly is connected to the preparation mixing basket assembly; it also includes a first motor arranged on the electric skateboard, and the output end of the first motor passes through a through hole opened on the electric skateboard and is fixed to one of the transmission teeth where the second transmission assembly is located.

[0012] Preferably, the soaking tank assembly includes a base arranged on the upper surface of the base frame, and a first support block arranged at one end of the base, and a first electric cylinder is arranged on the first support block; and also includes a soaking cylinder arranged at the output end of the first electric cylinder.

[0013] Preferably, the flushing nozzle assembly includes a side panel, which is fixed to one end of the base frame close to the forward direction of the electric skateboard; and a bracket arranged on the top of the side panel, a water tank with a built-in pump body is arranged at the top of the horizontal section of the bracket, and a nozzle body is arranged at the bottom of the horizontal section; it also includes a water pipe arranged between the water tank and the nozzle body and used to connect the two; a second support block is also arranged at the end of the base away from the first support block, and a second electric cylinder is arranged on the second support block, and also includes a cleaning cylinder fixed on the second electric cylinder, wherein the cleaning cylinder is arranged directly below the nozzle body, and the upper edge of the second support block is lower than the upper edge of the first support block.

[0014] Preferably, the side plate side wall is provided with a through slot, and a feed frame is arranged on the outer side of the side plate and connected to the through slot; it also includes a mixing frame arranged on the inner side of the side plate and placed on the lower edge of the through slot; an outlet frame connected to the mixing frame is arranged at the bottom of the mixing frame; and a baffle is slidably installed at the bottom of the mixing frame and is used to connect and disconnect the mixing frame and the outlet frame; it also includes an inclined plate arranged at the bottom of the mixing frame and inclined toward the outlet frame.

[0015] A method for preparing lightweight cement aggregate using power plant incineration slag, which is applied to the aforementioned equipment for preparing lightweight cement aggregate using power plant incineration slag, comprises:

[0016] S1: slag at 0.25 mol·L －1 Soak in Na2CO3 solution for 3 days, with a liquid-to-solid ratio of 10:1. During the soaking period, the soaking liquid is automatically stirred every 2 hours during the day through the structural characteristics of the mixing basket component itself, and clarified after 3 days;

[0017] S2: Then drive the sprocket transmission assembly to separate the preparation mixing basket assembly from the soaking tank assembly first, so as to achieve solid-liquid separation of the slag and the treatment solution;

[0018] S3: The preparation mixing basket assembly is then transported to the bottom of the flushing nozzle assembly through the sprocket transmission assembly to complete the flushing of the slag. The slag is flushed with water for 5 times until the liquid flushing the slag is clear;

[0019] S4: drying to form pre-treated slag for standby use;

[0020] S5: The pretreated slag is mixed with fine sand of a preset proportion through a mixing and preparing device to obtain mortar fine aggregate.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention realizes the pretreatment and sand making process of slag in sequence by sequentially acting the mixing basket assembly with the pretreatment device and the mixing material making device. The pretreated slag can effectively reduce the residual metal AI and sulfide content in the slag and increase the amorphous phase content of the slag. At the same time, the increase of the slag dosage within a certain range can significantly improve the grading of natural river sand, increase the amount of water reducing agent and water retention of the mixed mortar, and reduce the apparent density of the mixed mortar. Therefore, through the efficient coordination of various structures, the pretreatment and sand mixing operations of slag are realized, which not only ensures the preparation efficiency of slag, but also ensures the preparation quality of mortar fine aggregate.

[0023] 2. As another embodiment of the present invention, the first electric telescopic rod can drive the mounting block, mounting column, circular ring and arc frame fixed to the circular ring at its telescopic end to move downward. Since the rack always remains stationary during the process, the connection points of the two arc frames move away from each other to achieve the opening action, and vice versa to complete the closing action. When the two arc frames are in a semicircular closed state, it is convenient to hold the slag, and when the two are in an open state, the pre-treated slag inside the two arc frames can be transported to the mixing device and mixed with fine sand.

[0024] 3. As another embodiment of the present invention, when the second transmission assembly is rotated by the power provided by the first motor, the transmission chain body where the first transmission assembly and the second transmission assembly are located maintains a lower-up distribution and operates at the same frequency, so that the transmission member where the transmission component is located adapts to the operation of the transmission chain body, thereby realizing a horizontal and stable transmission process of other structures of the transmission component, and then the transmission shaft connected to the first transmission assembly drives the preparation mixing basket assembly thereon to maintain a horizontal transportation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure from a first viewing angle of the present invention;

[0026] Figure 2 is a schematic diagram of a second viewing angle stereoscopic structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure from a third viewing angle of the present invention;

[0028] Figure 4 is a schematic diagram of a third perspective structure of the present invention;

[0029] Figure 5 is a schematic diagram of a third perspective structure of the present invention;

[0030] Figure 6 is a schematic diagram of a sixth viewing angle stereoscopic structure of the present invention;

[0031] Figure 7 It is an enlarged structural schematic diagram of the transmission component;

[0032] Figure 8 An enlarged schematic diagram of the structure of the mixing basket assembly is provided;

[0033] Fig. 9 for Figure 8 Schematic diagram of the three-dimensional structure from another perspective.

[0034] In the figure: 1, chassis; 2, mounting rail; 201, electric slide rail; 201, electric skateboard; 3, longboard; 4, transmission groove; 5, sprocket transmission assembly; 501, transmission component; 5011, transmission column; 5012, transmission block; 5013, transmission shaft; 5014, transmission member; 502, first transmission assembly; 5021, transmission gear; 5022, transmission chain body; 503, second transmission assembly; 504, first motor; 6, mounting bar; 7, placement frame assembly; 701, mounting ring; 702, first electric telescopic rod; 703, mounting block; 7 04, circular ring; 705, arc frame; 706, connecting rod; 707, rack; 708, arc teeth; 709, mounting shaft; 8, stirring ring assembly; 801, second motor; 802, second electric telescopic rod; 803, stirring rod; 804, disc rod; 805, V-shaped rod; 9, base; 10, first support block; 11, second support block; 12, soaking tank; 13, cleaning tank; 14, feed frame; 15, mixing frame; 16, inclined plate; 17, outlet frame; 18, baffle; 19, bracket; 20, water tank; 21, water pipe; 22, nozzle body. DETAILED DESCRIPTION

[0035] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. The following describes various embodiments of the present invention in detail in conjunction with the drawings.

[0036] Example 1

[0037] See also Figures 1 to 9The present invention preferably provides a technical solution: an apparatus for preparing cement lightweight aggregate by using slag from power plant incineration, comprising: a base frame 1, a mounting track 2 arranged on the base frame 1, and a long plate 3 and an elliptical plate respectively arranged at the upper and middle parts of the mounting track 2, wherein a transmission groove 4 opened on the long plate 3 and the elliptical plate together constitute a transmission groove 4, and a sprocket transmission assembly 5 is arranged inside the transmission groove 4; it also includes a plurality of preparation mixing basket assemblies arranged at the front side of the sprocket transmission assembly 5 and capable of maintaining horizontality, for placing the slag; the base frame 1 is sequentially provided with a pretreatment device and a mixing material making device along the advancing direction of the mounting track 2, wherein the pretreatment device comprises a soaking tank assembly and a flushing nozzle assembly, and the soaking tank assembly is provided with a treatment solution, and when the sprocket transmission assembly 5 drives one of the preparation mixing basket assemblies to act with the soaking tank assembly and the flushing nozzle assembly in turn, the pretreated slag can be formed; when the sprocket transmission assembly 5 drives the pretreated slag for a second time and acts with the mixing material making device, the pretreated slag can be mixed with fine sand and made into mortar fine aggregate.

[0038] In this embodiment, the pretreatment device and the mixing device are arranged in sequence. Figure 1 Arranged from left to right, the plurality of preparation mixing basket assemblies on the sprocket drive assembly 5 can realize turnover under the action of the sprocket drive assembly 5, specifically Figure 1 The mixing basket assembly is operated clockwise in the state, so that one of the mixing basket assembly is successively interacted with the soaking tank assembly and the flushing nozzle assembly to complete the soaking and flushing process of the slag inside the mixing basket assembly. The specific operation steps are as follows: the treatment solution in the present application is preferably a Na2CO3 solution, which can use its solubility to convert the Ca2SO4 in the slag into Na2SO4, thereby reducing the sulfur content in the slag. At the same time, the metal AI in the slag is reacted to generate some non-expandable aluminum-containing compounds, and the gas generated is released in the pretreatment stage to avoid cracking and other damage in subsequent applications. The specific operation is: the slag is 0.25 mol·L －1 Soak in Na2CO3 solution for 3 days, with a liquid-to-solid ratio of 10:1. During the soaking period, the soaking liquid is automatically stirred every 2 hours during the day through the structural characteristics of the preparation mixing basket assembly. After 3 days, the sprocket transmission assembly 5 is driven to separate the preparation mixing basket assembly from the soaking tank assembly first, so as to achieve solid-liquid separation of the slag and the treatment solution. Subsequently, the preparation mixing basket assembly is transported to the bottom of the flushing nozzle assembly through the sprocket transmission assembly 5 to complete the flushing of the slag. It is preset to flush with water for 5 times until the liquid for flushing the slag is clarified, and then dried to form the pre-treated slag for standby use;

[0039] Then the installation track 2 is started, so that the installation track 2 moves forward, that is, Figure 1The state moves to the right, and the sprocket transmission component 5 is driven for the second time to carry the pre-treated slag to the inside of the mixing material making device and dump the slag into the mixing material making device. In the process of mixing the pre-treated slag with river sand to form fine aggregate, due to the difference in the properties of slag and river sand, as the slag replacement rate in the mixed sand changes, the specific performance is: the increase in the amount of slag can significantly improve the gradation of natural river sand, increase the amount of water reducing agent and water retention of the mixed mortar, and reduce the apparent density of the mixed mortar. However, the maximum replacement rate>80% will cause the prepared mixed sand to not meet the requirements of construction sand, but meet the Class II standard of recycled fine aggregate. The specific characteristics are: the bulk density increases first and then decreases, and the voids first decrease and then increase. This is because river sand belongs to fine sand and slag belongs to the range of coarse sand. When the two are mixed in a suitable proportion, the particles match each other to fill the voids, which is beneficial to improve the gradation and reduce the void ratio, and improve the performance of the mixed sand. Therefore, when the pre-treated slag and the preset proportion of fine sand are mixed and prepared by the mixing material making device, the mortar fine aggregate can be obtained;

[0040] At the same time, due to the structural characteristics of the mixing basket assembly itself, the slag and fine sand inside it can be further stirred to improve the mixing effect of the two.

[0041] In the present application, the mixing basket assembly is prepared and the pretreatment device and the mixing material making device are sequentially operated to realize the pretreatment and sand making processes of the slag in sequence, and the pretreated slag can effectively reduce the residual metal AI and sulfide content in the slag, and increase the amorphous phase content of the slag. At the same time, the increase of the slag dosage within a certain range can significantly improve the grading of natural river sand, increase the amount of water reducing agent and water retention of the mixed mortar, and reduce the apparent density of the mixed mortar. Therefore, through the efficient cooperation of various structures, the pretreatment and sand mixing operations of the slag are realized, which not only ensures the preparation efficiency of the slag, but also ensures the preparation quality of the mortar fine aggregate.

[0042] Example 2

[0043] As another embodiment of the present invention, each preparation mixing basket assembly is composed of a mounting bar 6, a stirring ring assembly 8 and a placement frame assembly 7 arranged at the bottom of the mounting bar 6, wherein the stirring ring assembly 8 and the placement frame assembly 7 are distributed inside and outside; the placement frame assembly 7 includes a mounting ring 701, and two first electric telescopic rods 702 arranged at the bottom of the mounting ring 701, two mounting blocks 703 fixed at the output ends of the two first electric telescopic rods 702, which are connected to two groups of circular rings 704 through mounting columns 709 respectively arranged at opposite ends, each group of circular rings 704 includes two circular rings 704, and the inner side of the circular rings 704 is provided with a plurality of mounting blocks 703. One of the arc frames 705 is fixed between the two circular rings 704, and another arc frame 705 is arranged between the two outer circular rings 704; it also includes a meshing transmission assembly, which is used to drive the two arc frames 705 to merge or expand. Furthermore, the meshing transmission assembly is provided with two groups, each group of the meshing transmission assembly includes a connecting rod 706 fixed to the bottom of the mounting ring 701, and a rack 707 arranged at the lower part of the connecting rod 706; it also includes an arc tooth 708 fixed on the outer wall of each arc frame 705, and the arc tooth 708 is meshed with its corresponding rack 707.

[0044] Combination Figure 1 , 2 As shown in FIGS. 8 and 9, each first electric telescopic rod 702 is connected to the arc frame 705 through the mounting block 703, the mounting column 709 and the circular ring 704 at its telescopic end, and the two arc frames 705 are respectively fixed to the two circular rings 704 disposed on the inner side and the two circular rings 704 disposed on the outer side, and the arc teeth 708 disposed on the outer wall are meshed with the rack 707, and the rack 707 is connected to the mounting ring 701 through the connecting rod 706, so that when the first electric telescopic rod 702 is extended, the arc frame 705 is fixed to the two circular rings 704 disposed on the inner side and the two circular rings 704 disposed on the outer side. Fig. 9 At this time, the first electric telescopic rod 702 can drive the mounting block 703, the mounting column 709, the ring 704 and the arc frame 705 fixed to the ring 704 at its telescopic end to move downward. Since the rack 707 always remains stationary during this process, the connection points of the two arc frames 705 move away from each other to achieve the opening action, and vice versa to complete the closing action. When the two arc frames 705 are Figure 8 , 9 When the two arc-shaped frames 705 are in the closed state, it is convenient to contain the slag, and when the two arc-shaped frames 705 are in the open state, the pre-treated slag inside the two arc-shaped frames 705 can be transported to the mixing material making device and mixed with fine sand.

[0045] Example 3

[0046] As other embodiments of the present invention, the stirring ring assembly 8 includes a second motor 801 fixed to the bottom of the mounting bar 6, a second electric telescopic rod 802 arranged at the output end of the second motor 801; and a stirring rod 803 arranged at the telescopic end of the second electric telescopic rod 802, and disc-shaped rods 804 are arranged at both ends of the stirring rod 803, wherein the bottom end of the disc-shaped rod 804 extends between the two arc-shaped frames 705; and also includes two V-shaped rods 805 arranged at the bottom of the stirring rod 803.

[0047] Combination Figure 8 , 9 As shown, the stirring rod 803 where the stirring ring assembly 8 is located is arranged at the telescopic end of the second electric telescopic rod 802, and is connected to the output end of the second motor 801 through the second electric telescopic rod 802. When the slag is soaking and flushing, its stirring drive source is provided by the second motor 801. When the two arc frames 705 are in the open state and the stirring ring assembly 8 needs to be extended into the mixing device for stirring and mixing, the second motor 801 and the second electric telescopic rod 802 can be driven at this time.

[0048] Furthermore, the mounting track 2 includes an electric slide rail 201 fixed to the upper surface of the base frame 1, and an electric slide plate 202 slidably mounted inside the electric slide rail 201, wherein the long board 3 is arranged at the front side of the electric slide plate 202, and the electric slide plate 202 is provided with a plurality of electric slide plates 202. Figure 1 , 2 、5.

[0049] Example 4

[0050] As another embodiment of the present invention, the sprocket transmission assembly 5 includes a first transmission assembly 502 and a second transmission assembly 503 of the same structure, and the first transmission assembly 502 and the second transmission assembly 503 are respectively arranged on the front side of the long board 3 and the electric skateboard 202; the first transmission assembly 502 is composed of two transmission teeth 5021 rotatably connected to the upper and lower sides of the long board 3, and a transmission chain body 5022 sleeved on the two transmission teeth 5021; and a plurality of transmission components 501 arranged inside the transmission groove 4, wherein each transmission component 501 includes a transmission column 5011, two transmission blocks 5012 fixed at both ends of the transmission column 5011, and a plurality of transmission components 5011 arranged inside the transmission groove 4, wherein each transmission component 501 includes a transmission column 5011, and two transmission blocks 5012 fixed at both ends of the transmission column 5011. , and transmission shafts 5013 respectively fixing the opposite sides of the two transmission blocks 5012, and the two centrally symmetrical transmission shafts 5013 are respectively connected to the transmission chain body 5022 where the first transmission assembly 502 and the second transmission assembly 503 are located through transmission members 5014 rotatably mounted thereon, wherein the transmission shaft 5013 connected to the first transmission assembly 502 is connected to the preparation mixing basket assembly; it also includes a first motor 504 arranged on the electric skateboard 202, and the output end of the first motor 504 passes through a through hole opened on the electric skateboard 202 and is fixed to one of the transmission teeth 5021 where the second transmission assembly 503 is located.

[0051] Combination Figure 1 , 6 7, the first transmission assembly 502 and the second transmission assembly 503 have the same structure, and only the first transmission assembly 502 is explained here. Figure 1 As shown, a plurality of transmission components 501 are arranged inside the transmission groove 4 and used to connect the first transmission assembly 502 and the second transmission assembly 503. The transmission column 5011 where the transmission components are located is fixed to the transmission block 5012. The two transmission blocks 5012 are rotatably connected to the transmission components 5014 through the transmission shaft 5013. At the same time, the transmission components 5014 are connected to the transmission chain body 5022 where the first transmission assembly 502 and the second transmission assembly 503 are located. Therefore, when the second transmission assembly 503 is rotated by the power provided by the first motor 504, the transmission chain body 5022 where the first transmission assembly 502 and the second transmission assembly 503 are located maintains a bottom-up distribution and runs at the same frequency, so that the transmission component 5014 where the transmission component 501 is located adapts to the operation of the transmission chain body 5022, thereby realizing the horizontal and stable transmission process of other structures of the transmission component 501, and then the transmission shaft 5013 connected to the first transmission assembly 502 drives the preparation mixing basket assembly thereon to maintain the horizontal transportation process.

[0052] Example 5

[0053] As another embodiment of the present invention, the soaking tank assembly includes a base 9 arranged on the upper surface of the base frame 1, and a first support block 10 arranged at one end of the base 9, and a first electric cylinder is arranged on the first support block 10; and also includes a soaking tank 12 arranged at the output end of the first electric cylinder.

[0054] Combination Figure 1 As shown, the immersion cylinder 12 is fixed at the output end of the first electric cylinder and is used to hold the treatment solution. When the preparation mixing basket assembly needs to be immersed in the immersion cylinder 12 and contacted with the treatment solution, the height of the preparation mixing basket assembly is adjusted by the sprocket transmission assembly 5, and the immersion cylinder 12 is driven upward by the first electric cylinder so that the slag inside the preparation mixing basket assembly is completely immersed in the treatment solution inside the immersion cylinder 12.

[0055] Example 6

[0056] As other embodiments of the present invention, the flushing nozzle assembly includes a side panel, which is fixed to one end of the base frame 1 close to the forward direction of the electric skateboard 202; and a bracket 19 arranged on the top of the side panel, and a water tank 20 with a built-in pump body is arranged at the top of the horizontal section of the bracket 19, and a nozzle body 22 is arranged at the bottom of the horizontal section; it also includes a water pipe 21 arranged between the water tank 20 and the nozzle body 22 and used to connect the two; a second support block 11 is also arranged at the end of the base 9 away from the first support block 10, and a second electric cylinder is arranged on the second support block 11, and also includes a cleaning cylinder 13 fixed on the second electric cylinder, wherein the cleaning cylinder 13 is arranged directly below the nozzle body 22, and the upper edge of the second support block 11 is lower than the upper edge of the first support block 10.

[0057] Here, the nozzle body 22 is placed above the right vertical section of the transmission groove 4. Therefore, when one of the preparation mixing basket assemblies completes immersion and moves to the bottom of the nozzle body 22, the pump body inside the water tank 20 is operated to realize the nozzle body 22 to flush the slag inside the preparation mixing basket assembly. The cleaning cylinder 13 arranged below the nozzle body 22 can, on the one hand, receive the liquid after flushing. On the other hand, in order to improve the cleaning effect of the slag after immersion, the preparation mixing basket assembly after flushing can be driven counterclockwise to be embedded in the upward cleaning cylinder 13. The liquid inside the cleaning cylinder 13 can perform the soaking and washing process of the slag inside the preparation mixing basket assembly before flushing. In addition, combined with the function of the stirring ring assembly 8 where the preparation mixing basket assembly is located, the cleaning effect of the slag is further improved. Then, the preparation mixing basket assembly is controlled to move upward to realize the flushing process of the preparation mixing basket assembly by the nozzle body 22.

[0058] Example 7

[0059] As other embodiments of the present invention, the side wall of the side plate is provided with a through groove, and a feed frame 14 is arranged on the outer side of the side plate and connected to the through groove; it also includes a mixing frame 15 arranged on the inner side of the side plate and placed at the lower edge of the through groove; an outlet frame 17 connected to the mixing frame 15 is arranged at the bottom of the mixing frame 15; and a baffle 18 is slidably installed at the bottom of the mixing frame 15 and is used to connect and disconnect the mixing frame 15 and the outlet frame 17; it also includes an inclined plate 16 arranged at the inner bottom of the mixing frame 15 and inclined to the outlet frame 17.

[0060] Combination Figure 2 , 4 As shown, the sand mixing process is as follows; first, the mounting track 2 is driven to place the preparation mixing basket assembly above the mixing frame 15, and at this time, the sprocket transmission assembly 5 is driven secondarily to move the preparation mixing basket assembly downward and place it inside the mixing frame 15, and then the placement frame assembly 7 where the preparation mixing basket assembly is located is opened, and the pre-treated slag falls into the mixing frame 15, and then the preset proportion of fine sand is poured into the mixing frame 15 through the feeding frame 14, and the stirring ring assembly 8 where the preparation mixing basket assembly is located is operated to complete the mixing of the two.

[0061] A method for preparing lightweight cement aggregate using power plant incineration slag, applied to the above-mentioned equipment for preparing lightweight cement aggregate using power plant incineration slag:

[0062] Methods include:

[0063] S1: slag at 0.25 mol·L －1 Soak in Na2CO3 solution for 3 days, with a liquid-to-solid ratio of 10:1. During the soaking period, the soaking liquid is automatically stirred every 2 hours during the day through the structural characteristics of the mixing basket component itself, and clarified after 3 days;

[0064] S2: Then drive the sprocket drive assembly 5 so that the preparation mixing basket assembly is separated from the soaking tank assembly first, so as to achieve solid-liquid separation of the slag and the treatment solution;

[0065] S3: The preparation mixing basket assembly is then transported to the bottom of the flushing nozzle assembly through the sprocket transmission assembly 5 to complete the flushing of the slag. The slag is flushed with water for 5 times until the liquid flushing the slag is clear;

[0066] S4: drying to form pre-treated slag for standby use;

[0067] S5: The pretreated slag is mixed with fine sand of a preset proportion through a mixing and preparing device to obtain mortar fine aggregate.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. There are many ways of detachable installation, for example, it can be through the method of plug-in and snap-on matching, and for example, through the method of bolt connection, etc.

[0069] The above clearly and completely describes the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation.

[0070] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above invention, which fall within the scope of protection of the present invention.

Claims

1. A device for preparing lightweight cement aggregate using slag from power plant incineration, characterized in that: include: A base frame (1), a mounting track (2) arranged on the base frame (1), and a long plate (3) and an elliptical plate respectively arranged on the upper part and the middle part of the mounting track (2), wherein a transmission groove (4) provided on the long plate (3) and the elliptical plate together constitute a transmission groove (4), and a sprocket transmission assembly (5) is arranged inside the transmission groove (4); It also includes a plurality of preparation mixing basket assemblies arranged on the front side of the sprocket drive assembly (5) and capable of being kept horizontal, for placing slag; The base frame (1) is provided with a pretreatment device and a mixing and preparing device in sequence along the direction in which the mounting track (2) advances, wherein the pretreatment device comprises a soaking tank assembly and a flushing nozzle assembly, wherein the soaking tank assembly contains a treatment solution, and when the sprocket drive assembly (5) drives one of the preparation mixing basket assemblies to interact with the soaking tank assembly and the flushing nozzle assembly in sequence, pretreated slag can be formed; When the sprocket drive assembly (5) drives the pre-treated slag for a second time and interacts with the mixing and material making device, the pre-treated slag can be mixed with fine sand to form mortar fine aggregate.

2. The device for preparing lightweight cement aggregate by using power plant incineration slag according to claim 1, characterized in that: Each preparation mixing basket assembly is composed of a mounting bar (6), a stirring ring assembly (8) and a placement frame assembly (7) arranged at the bottom of the mounting bar (6), wherein the stirring ring assembly (8) and the placement frame assembly (7) are distributed inside and outside; The placement frame assembly (7) comprises a mounting ring (701), and two first electric telescopic rods (702) arranged at the bottom of the mounting ring (701), and two mounting blocks (703) fixed at the output ends of the two first electric telescopic rods (702), which are connected to two groups of circular rings (704) through mounting columns (709) respectively arranged at opposite ends, each group of circular rings (704) comprises two circular rings (704), one of the arc-shaped frames (705) is fixed between the two inner circular rings (704), and another arc-shaped frame (705) is arranged between the two outer circular rings (704); It also includes a meshing transmission component, which is used to drive the two arc frames (705) to merge or expand.

3. The device for preparing lightweight cement aggregate by using power plant incineration slag according to claim 2, characterized in that: The meshing transmission assembly is provided in two groups, and each group of the meshing transmission assembly includes a connecting rod (706) fixed to the bottom of the mounting ring (701), and a rack (707) arranged at the lower part of the connecting rod (706); It also includes arc-shaped teeth (708) fixed on the outer wall of each arc-shaped frame (705), and the arc-shaped teeth (708) are meshed with the corresponding rack (707).

4. The device for preparing lightweight cement aggregate using power plant incineration slag according to claim 2, characterized in that: The stirring ring assembly (8) comprises a second motor (801) fixed to the bottom of the mounting bar (6), and a second electric telescopic rod (802) arranged at the output end of the second motor (801); and a stirring rod (803) arranged at the telescopic end of the second electric telescopic rod (802), wherein disc-shaped rods (804) are arranged at both ends of the stirring rod (803), wherein the bottom end of the disc-shaped rod (804) extends between the two arc-shaped frames (705); It also includes two V-shaped rods (805) arranged at the bottom of the stirring rod (803).

5. The device for preparing lightweight cement aggregate by using power plant incineration slag according to claim 1, characterized in that: The mounting track (2) comprises an electric slide rail (201) fixed on the upper surface of the base frame (1), and an electric slide plate (202) slidably mounted inside the electric slide rail (201), wherein the long board (3) is arranged on the front side of the electric slide plate (202).

6. The device for preparing lightweight cement aggregate using power plant incineration slag according to claim 1, characterized in that: The sprocket transmission assembly (5) comprises a first transmission assembly (502) and a second transmission assembly (503) of the same structure, wherein the first transmission assembly (502) and the second transmission assembly (503) are respectively arranged on the front side of the long board (3) and the electric skateboard (202); The first transmission assembly (502) is composed of two transmission teeth (5021) rotatably connected to the upper and lower parts of the long board (3), and a transmission chain body (5022) sleeved on the two transmission teeth (5021); and a plurality of transmission components (501) arranged inside the transmission groove (4), wherein each transmission component (501) comprises a transmission column (5011), two transmission blocks (5012) fixed at both ends of the transmission column (5011), and transmission shafts (5013) respectively fixed to opposite sides of the two transmission blocks (5012), and two centrally symmetrical transmission shafts (5013) are respectively connected to a transmission chain body (5022) where a first transmission assembly (502) and a second transmission assembly (503) are located through transmission members (5014) rotatably mounted thereon, wherein the transmission shaft (5013) connected to the first transmission assembly (502) is connected to a preparation mixing basket assembly; It also includes a first motor (504) arranged on the electric skateboard (202), wherein an output end of the first motor (504) passes through a through hole provided on the electric skateboard (202) and is fixed to one of the transmission teeth (5021) where the second transmission assembly (503) is located.

7. The device for preparing lightweight cement aggregate using power plant incineration slag according to claim 1, characterized in that: The soaking tank assembly comprises a base (9) arranged on the upper surface of the base frame (1), and a first support block (10) arranged at one end of the base (9), wherein a first electric cylinder is arranged on the first support block (10); It also includes a soaking cylinder (12) arranged at the output end of the first electric cylinder.

8. The device for preparing lightweight cement aggregate using power plant incineration slag according to claim 7, characterized in that: The flushing nozzle assembly comprises a side plate, and the side plate is fixed to one end of the base frame (1) close to the forward direction of the electric slide plate (202); and a bracket (19) arranged on the top of the side plate, wherein a water tank (20) with a built-in pump body is arranged on the top of the horizontal section of the bracket (19), and a nozzle body (22) is arranged on the bottom of the horizontal section; It also includes a water pipe (21) disposed between the water tank (20) and the nozzle body (22) and used to connect the two; The base (9) is also provided with a second support block (11) at one end away from the first support block (10), and a second electric cylinder arranged on the second support block (11), and also includes a cleaning cylinder (13) fixed on the second electric cylinder, wherein the cleaning cylinder (13) is arranged directly below the nozzle body (22), and the upper edge of the second support block (11) is lower than the upper edge of the first support block (10).

9. The device for preparing lightweight cement aggregate using power plant incineration slag according to claim 8, characterized in that: The side wall of the side plate is provided with a through slot, and a feed frame (14) is arranged on the outside of the side plate and connected to the through slot; It also includes a mixing frame (15) arranged on the inner side of the side plate and placed at the lower edge of the through slot; an outlet frame (17) communicating with the mixing frame (15) is arranged at the bottom of the mixing frame (15); and a baffle (18) slidably mounted on the bottom of the mixing frame (15) and used for connecting and disconnecting the mixing frame (15) and the outlet frame (17); It also includes an inclined plate (16) which is arranged at the bottom of the mixing frame (15) and is inclined toward the outlet frame (17).

10. A method for preparing lightweight cement aggregate using power plant incineration slag, applied to the equipment for preparing lightweight cement aggregate using power plant incineration slag as claimed in claims 1 to 9, characterized in that: The method comprises: S1: slag at 0.25 mol·L －1 Soak in Na2CO3 solution for 3 days, with a liquid-to-solid ratio of 10:

1. During the soaking period, the soaking liquid is automatically stirred every 2 hours during the day through the structural characteristics of the mixing basket component itself, and clarified after 3 days; S2: Then drive the sprocket drive assembly (5) so that the preparation mixing basket assembly is separated from the soaking tank assembly first, so as to achieve solid-liquid separation of the slag and the treatment solution; S3: The prepared mixing basket assembly is then transported to the bottom of the flushing nozzle assembly through the sprocket transmission assembly (5) to complete the flushing of the slag. The slag is flushed with water for 5 times until the liquid used to flush the slag is clear. S4: drying to form pre-treated slag for standby use; S5: The pretreated slag is mixed with fine sand of a preset proportion through a mixing and preparing device to obtain mortar fine aggregate.

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