Energy-saving building material production equipment and lepidolite waste residue resource utilization method

Abstract

The invention provides energy-saving building material production equipment. Relates to the field of building material production, in particular to energy-saving building material production equipment which comprises a crushing mechanism placed on the ground through a support. According to the energy-saving building material production equipment provided by the invention, the pressing motor is arranged to drive the lower pressing block and the upper pressing block to be matched to jointly press baking-free bricks, so that the problem that the strength of the baking-free bricks does not reach the standard due to non-uniform density is avoided; meanwhile, only one pressing motor is used for completing uniform compaction, multiple power sources are prevented from being used for driving movement in two directions, energy is saved, filter residues are crushed and then fully mixed with construction waste powder and a cement binder, solid waste resource utilization is achieved, the raw material cost is reduced, materials are discharged in time through an opening and closing plate after mixing, caking and blocking are avoided, and the production efficiency is improved. The left-handed screw and the right-handed screw drive the upper pressing block and the lower pressing block to conduct opposite pressing, the baking-free brick forming efficiency and compactness are improved, natural curing is matched with compressive strength and leaching toxicity detection after forming, and it is guaranteed that the product quality reaches the standard.

Description

Technical Field

[0001] This invention relates to the field of building materials production, and in particular to energy-saving building materials production equipment and a method for the resource utilization of lithium mica waste residue. Background Technology

[0002] The production of building materials, especially bulk basic building materials such as bricks and blocks, is an important basic industry of the national economy. However, it is also an energy-intensive industry, and its high energy consumption has become a key bottleneck restricting the green and sustainable development of the industry. With the rapid development of the new energy industry, the demand for lithium resources continues to rise. As an important source of lithium resources in my country, lepidolite generates a large amount of solid waste during its lithium extraction process. In lepidolite-rich ores, rare metal beryllium and toxic metal thallium are often present. In order to comprehensively utilize resources and eliminate environmental hazards, it is particularly important to solidify and utilize beryllium and thallium resources from the residue after lithium extraction from lepidolite.

[0003] In existing energy-saving building material production equipment, the raw materials for non-fired bricks are fed into the batching machine according to the proportion. After being mixed by the mixer, the raw materials are sent to the brick press. The scooping hopper scoops the material from the material trough and pours it into the shaping mold frame to fill each brick-shaped hole. After the scooping hopper is removed, the stamping die head presses down to compact the material powder in the brick-shaped hole. After being pressed and shaped, the non-fired bricks are transferred and placed for natural curing.

[0004] However, existing energy-saving building material production equipment only uses an upper punch and a lower die to press the powder during the pressing process, which creates a significant density gradient. The part near the upper die has a high density, while the part near the lower die has a low density. This uneven density leads to the non-fired bricks not meeting the strength standards, being prone to delamination and cracking, and having unstable quality.

[0005] Therefore, it is necessary to provide energy-saving building material production equipment and methods for the resource utilization of lithium mica waste residue to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention provides energy-saving building material production equipment and a method for the resource utilization of lithium mica waste residue, which solves the problem that simply using an upper punching die to press the unfired bricks under pressure results in uneven density, leading to substandard strength, easy delamination and cracking, and unstable quality of the unfired bricks.

[0007] To solve the above-mentioned technical problems, the present invention provides an energy-saving building material production equipment, comprising: a crushing mechanism placed on the ground by a support, wherein the crushing mechanism is used to crush filter residue;

[0008] A mixing mechanism for mixing construction waste materials, cement, and crushed filter residue into a mixture;

[0009] An opening and closing mechanism for discharging the mixture;

[0010] Construction waste handling mechanism, wherein the construction waste handling mechanism is used to transport construction waste into the interior of the mixing mechanism;

[0011] A cementing mechanism for conveying cement into the interior of the mixing mechanism;

[0012] A pressing mechanism is provided, which is set on the ground. The pressing mechanism includes a pressing motor and a pressing box. The pressing motor is set on the ground, and its output shaft is fixedly connected to a left-hand and right-hand screw. The left-hand and right-hand screws are fixedly installed on the ground via a rotating frame. An upper connecting plate and a lower connecting plate are threadedly connected to the surfaces of the left-hand and right-hand screws, respectively. A pressing auxiliary rod is slidably installed on one side of the upper connecting plate and the lower connecting plate. The pressing auxiliary rod is fixedly installed on the ground via a rotating frame. An upper pressing block is fixedly installed at the bottom of the upper connecting plate via a connecting column. A lower pressing block is fixedly installed at the top of the lower connecting plate via a connecting column. The pressing box is set on the ground via two support plates and is located between the upper pressing block and the lower pressing block. A pressing mold frame is provided inside the pressing box. A surrounding plate is fixedly installed on the top of the pressing box. Horizontal grooves are provided inside both support plates. The upper pressing block and the lower pressing block are adapted to the pressing mold frame.

[0013] A conveying mechanism for conveying the mixture into the interior of the pressing mechanism.

[0014] Preferably, the crushing mechanism includes a crushing box, which is placed on the ground by a support. A guide port is fixedly installed on the top of the crushing box, and a crushing motor is fixedly installed on the top of the guide port by a fixing frame. The output shaft of the crushing motor is fixedly connected to a crushing shaft, and two sets of crushing blades are fixedly installed on the surface of the crushing shaft. Several through holes are opened at the bottom of the crushing box.

[0015] Preferably, the mixing mechanism is fixedly installed at the bottom of the crushing box. The mixing mechanism includes a mixing motor and a mixing box. The mixing motor is fixedly installed at the bottom of the crushing box. The mixing box is fixedly installed on the ground by a bracket. A top cover is fixedly installed on the top of the mixing box. The top cover is adapted to the crushing box. The output shaft of the mixing motor is fixedly connected to a mixing shaft. Several mixing plates are fixedly installed on the surface of the mixing shaft. A discharge port is fixedly installed at the bottom of the mixing box.

[0016] Preferably, the opening and closing mechanism is rotatably installed inside the discharge port. The opening and closing mechanism includes an opening and closing shaft, which is rotatably installed inside the discharge port. One end of the opening and closing shaft passes through one side of the discharge port and extends to the outside. An opening and closing plate is fixedly installed on the surface of the opening and closing shaft, and the opening and closing plate is adapted to the discharge port.

[0017] Preferably, the construction waste disposal mechanism is located on the ground. The construction waste disposal mechanism includes a construction waste bin, which is located on the ground. A material pump is connected to one side of the construction waste bin via a connecting pipe, and the discharge end of the material pump is connected to the top of the cover via a material pipe.

[0018] Preferably, the cementing mechanism is located on the ground, and the cementing mechanism includes a cement bucket located on the ground. One side of the cement bucket is connected to a cement pump via a connecting pipe, and the discharge end of the cement pump is connected to the top of the cover via a cement pipe.

[0019] Preferably, the conveying mechanism is disposed on the ground and includes a first conveying plate and a second conveying plate. The first and second conveying plates are both fixedly installed on the ground by support columns. Two first conveying rollers are rotatably installed inside the two first conveying plates and are connected to each other by a first conveyor belt. One end of one of the first conveying rollers is fixedly connected to a conveyor motor, which is fixedly installed on the ground by a support. Three second conveying rollers are rotatably installed inside the two second conveying plates and are connected to each other by a second conveyor belt. One of the second conveying rollers and one of the first conveying rollers are connected by a conveyor belt. The first conveyor belt is adapted to the opening and closing plate and the second conveyor belt is adapted to the enclosure plate.

[0020] Preferably, a leveling mechanism is fixedly installed on one side of the pressing box. The leveling mechanism includes a motor, which is fixedly installed on one side of the pressing box via a fixed base. Two leveling screw rotating frames are fixedly installed on one side of the pressing box. A leveling screw is rotatably installed between one side of the pressing box and one of the leveling screw rotating frames. One end of the leveling screw is fixedly connected to the output shaft of the motor. A push plate is threadedly connected to the surface of the leveling screw. A leveling auxiliary rod is fixedly installed between one side of the pressing box and one of the leveling screw rotating frames. The surface of the push plate is slidably installed with the interior of the leveling auxiliary rod.

[0021] Preferably, the interior of the transverse groove is provided with a push plate, and a cylinder is fixedly connected to one side of the push plate. The cylinder is fixedly installed on the ground by a support. A recycling box and a placement rack are fixedly installed on one side of the pressing box. The recycling box is adapted to the push plate, and the placement rack is adapted to the push plate. The first conveying roller is connected to the opening and closing shaft by a connecting belt drive.

[0022] The method for resource utilization of lithium mica waste residue includes the following steps:

[0023] S1: Synthesis of calcium polysulfides

[0024] Raw material selection: Industrial-grade calcium sulfide and sulfur are mixed in a certain proportion to ensure that the sulfur content of the reactants meets the synthesis requirements;

[0025] Reaction conditions: After the mixed raw materials are homogenized by ball milling, they are heated to a suitable temperature under inert gas protection and reacted at a constant temperature for a certain time to generate calcium polysulfide products with specific sulfur chain lengths;

[0026] S2: Preparation of roasted clinker

[0027] Raw material ratio: Lithium mica minerals and calcium-based additives are mixed in an optimized ratio to form homogeneous raw meal;

[0028] Calcination process: After the raw material is preheated, it is calcined in a high-temperature muffle furnace in stages, including pre-oxidation, lattice activation and stabilization stages, to finally obtain a porous clinker.

[0029] S3: Immersion and Simultaneous Curing

[0030] Pulping process: After the clinker is crushed, it is ball-milled with water at a suitable solid-liquid ratio to obtain leachate with qualified fineness;

[0031] Adding curing agent: Add an appropriate amount of calcium polysulfide as the main curing agent, which uses its sulfur chain structure to complex heavy metals. Combined with the addition of high specific adsorption materials such as magnesium aluminum silicate, the stabilization effect is enhanced through surface adsorption and interlayer retention.

[0032] Reaction control: Adjust the slurry to an alkaline environment and complete the heavy metal immobilization reaction under appropriate temperature and stirring conditions;

[0033] S4: Solid-liquid separation

[0034] The slurry is efficiently separated by a filter press, the brine is purified and reused in the lithium extraction system, and the filter residue is used in the resource utilization process.

[0035] Building material preparation: Filter residue and construction waste are mixed in proportion, an appropriate amount of binder is added, and the mixture is pressed under high pressure to form a building material blank. After the blank is fully cured naturally, a non-fired brick that meets the building material standards is obtained.

[0036] Compared with related technologies, the energy-saving building material production equipment provided by this invention has the following beneficial effects:

[0037] This invention provides an energy-saving building material production equipment. By setting up a pressing motor to drive the lower and upper pressing blocks to work together to press the non-fired bricks, the problem of uneven density leading to substandard strength of the non-fired bricks is avoided. At the same time, only one pressing motor is used to complete uniform compaction, avoiding the need for multiple power sources to drive movement in two directions, thus saving energy. After the filter residue is crushed, it is thoroughly mixed with construction waste powder and cement binder to realize the resource utilization of solid waste and reduce raw material costs. After mixing, the material is discharged in time through the opening and closing plate to prevent clumping and blockage. The left and right rotating screw drives the upper and lower pressing blocks to press in opposite directions, improving the molding efficiency and density of the non-fired bricks. After molding, natural curing combined with compressive strength and leaching toxicity testing ensures that the product quality meets the standards. Attached Figure Description

[0038] Figure 1 A schematic diagram of a preferred embodiment of the energy-saving building material production equipment provided by the present invention;

[0039] Figure 2 for Figure 1 The diagram shows the structure of the mixing mechanism.

[0040] Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below;

[0041] Figure 4 for Figure 1 The diagram shows the structure of the crushing mechanism.

[0042] Figure 5 for Figure 1 The diagram shown is a structural schematic of the construction waste disposal mechanism.

[0043] Figure 6 for Figure 1 The diagram shows the structural schematic of the cement structure.

[0044] Figure 7 for Figure 1 The diagram shown is a structural schematic of the conveying mechanism.

[0045] Figure 8 for Figure 1 Another schematic diagram of the conveying mechanism shown;

[0046] Figure 9 for Figure 1 The diagram shows the structure of the pressing mechanism;

[0047] Figure 10 for Figure 9 Another structural schematic diagram of the pressing mechanism shown;

[0048] Figure 11 for Figure 9 Another structural schematic diagram of the pressing mechanism shown;

[0049] Figure 12 A schematic diagram of the structure of a second embodiment of an energy-saving building materials production equipment;

[0050] Figure 13 for Figure 12 The diagram shows the installation of the cylinder;

[0051] Figure 14 for Figure 12 The diagram shows the structure of the flattening mechanism.

[0052] Figure 15 This is a process flow diagram for the resource utilization of lithium mica waste residue.

[0053] Numbered in the diagram: 1. Mixing mechanism, 101. Mixing box, 102. Top cover, 103. Mixing motor, 104. Mixing shaft, 105. Mixing plate, 106. Discharge port; 2. Opening and closing mechanism, 201. Opening and closing shaft, 202. Opening and closing plate; 3. Crushing mechanism, 301. Crushing box, 302. Guide port, 303. Crushing motor, 304. Crushing shaft, 305. Crushing blade, 306. Through hole; 4. Construction waste mechanism, 401. Construction waste bin, 402. Material pump, 403. Material pipe; 5. Cement mechanism, 501. Cement bin, 502. Cement pump, 503. Cement pipe; 6. Conveying mechanism, 601. First conveying plate, 602. First conveying roller, 603. First conveyor belt; 6 04. Second conveyor plate; 605. Second conveyor roller; 606. Second conveyor belt; 607. Conveyor belt; 608. Conveyor motor; 7. Pressing mechanism; 701. Pressing motor; 702. Left and right rotating screws; 703. Upper connecting plate; 704. Upper pressing block; 705. Lower connecting plate; 706. Lower pressing block; 707. Pressing auxiliary rod; 708. Pressing box; 709. Pressing mold frame; 710. Enclosure plate; 711. Support plate; 712. Horizontal groove; 8. Flattening mechanism; 801. Motor; 802. Flattening screw; 803. Flattening auxiliary rod; 804. Push plate; 805. Flattening screw rotating frame; 9. Cylinder; 10. Push-out plate; 11. Recycling box; 12. Placement rack; 13. Connecting belt. Detailed Implementation

[0054] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0055] First Embodiment

[0056] Please refer to the following: Figures 1-11 An energy-saving building material production equipment includes: a crushing mechanism 3 placed on the ground via a support frame, the crushing mechanism 3 being used to crush filter residue;

[0057] Mixing mechanism 1, which is used to mix construction waste materials, cement and crushed filter residue into a mixture;

[0058] Opening and closing mechanism 2, which is used to discharge the mixture;

[0059] Construction waste mechanism 4, which is used to transport construction waste into the interior of the mixing mechanism 1;

[0060] Cement mechanism 5, which is used to convey cement to the interior of the mixing mechanism 1;

[0061] A pressing mechanism 7 is installed on the ground. The pressing mechanism 7 includes a pressing motor 701 and a pressing box 708. The pressing motor 701 is installed on the ground, and its output shaft is fixedly connected to a left-hand and right-hand screw 702. The left-hand and right-hand screw 702 are fixedly installed on the ground via a rotating frame. An upper connecting plate 703 and a lower connecting plate 705 are threadedly connected to the surfaces of the left-hand and right-hand screw 702, respectively. A pressing auxiliary rod 707 is slidably installed on one side of the upper connecting plate 703 and the lower connecting plate 705. The pressing auxiliary rod 707 is fixedly installed on the ground via a rotating frame. The bottom of the upper connecting plate 703 is fixedly installed with an upper pressing block 704 via a connecting column, and the top of the lower connecting plate 705 is fixedly installed with a lower pressing block 706 via a connecting column. The pressing box 708 is set on the ground via two support plates 711 and is located between the upper pressing block 704 and the lower pressing block 706. The pressing box 708 has a pressing mold frame 709 inside, and a surrounding plate 710 is fixedly installed on the top of the pressing box 708. The two support plates 711 each have a transverse groove 712 inside. The upper pressing block 704, the lower pressing block 706 and the pressing mold frame 709 are adapted to be installed.

[0062] The conveying mechanism 6 is used to convey the mixture into the interior of the pressing mechanism 7.

[0063] The crushing mechanism 3 includes a crushing box 301, which is placed on the ground by a support. A guide port 302 is fixedly installed on the top of the crushing box 301. A crushing motor 303 is fixedly installed on the top of the guide port 302 by a fixing frame. A crushing shaft 304 is fixedly connected to the output shaft of the crushing motor 303. Two sets of crushing blades 305 are fixedly installed on the surface of the crushing shaft 304. Several through holes 306 are opened at the bottom of the crushing box 301.

[0064] The mixing mechanism 1 is fixedly installed at the bottom of the crushing box 301. The mixing mechanism 1 includes a mixing motor 103 and a mixing box 101. The mixing motor 103 is fixedly installed at the bottom of the crushing box 301. The mixing box 101 is fixedly installed on the ground by a bracket. A top cover 102 is fixedly installed on the top of the mixing box 101. The top cover 102 is adapted to the crushing box 301. The output shaft of the mixing motor 103 is fixedly connected to a mixing shaft 104. Several mixing plates 105 are fixedly installed on the surface of the mixing shaft 104. A discharge port 106 is fixedly installed at the bottom of the mixing box 101.

[0065] The opening and closing mechanism 2 is rotatably installed inside the discharge port 106. The opening and closing mechanism 2 includes an opening and closing shaft 201, which is rotatably installed inside the discharge port 106. One end of the opening and closing shaft 201 passes through one side of the discharge port 106 and extends to the outside. An opening and closing plate 202 is fixedly installed on the surface of the opening and closing shaft 201, and the opening and closing plate 202 is adapted to the discharge port 106.

[0066] The construction waste disposal mechanism 4 is set on the ground. The construction waste disposal mechanism 4 includes a construction waste bin 401. The construction waste bin 401 is set on the ground. One side of the construction waste bin 401 is connected to a material pump 402 through a connecting pipe. The discharge end of the material pump 402 is connected to the top of the upper cover 102 through a material pipe 403.

[0067] The cement mechanism 5 is set on the ground. The cement mechanism 5 includes a cement bucket 501. The cement bucket 501 is set on the ground. A cement pump 502 is connected to one side of the cement bucket 501 through a connecting pipe. The discharge end of the cement pump 502 is connected to the top of the upper cover 102 through a cement pipe 503.

[0068] The conveying mechanism 6 is disposed on the ground and includes a first conveying plate 601 and a second conveying plate 604. Both the first conveying plate 601 and the second conveying plate 604 are fixedly installed on the ground by support columns. Two first conveying rollers 602 are rotatably installed inside the two first conveying plates 601. The two first conveying rollers 602 are connected to each other by a first conveyor belt 603. One end of one of the first conveying rollers 602 is fixedly connected to a conveyor motor 608. The conveyor motor 608 is fixedly installed on the ground by a support. Three second conveying rollers 605 are rotatably installed inside the two second conveying plates 604. The three second conveying rollers 605 are connected to each other by a second conveyor belt 606. One of the second conveying rollers 605 and one of the first conveying rollers 602 are connected by a conveyor belt 607. The first conveyor belt 603 is adapted to the opening and closing plate 202 and the second conveyor belt 606 is adapted to the enclosure plate 710.

[0069] In actual use, construction waste (red brick powder: granite sawdust = 3:1) and filter residue are mixed with construction waste at a mass ratio of 6:4.

[0070] The working principle of the energy-saving building material production equipment provided by this invention is as follows:

[0071] First, the filter residue after solid-liquid separation is placed into the crushing box 301 through the feed inlet 302. The crushing motor 303 is started and the crushing blades 305 are rotated through the crushing shaft 304. After the filter residue is crushed into powder, it is discharged into the mixing box 101 through the through hole 306.

[0072] Then, the crushed filter residue enters the mixing box 101. The material pump 402 is started to pump the construction waste powder into the mixing box 101 through the material pipe 403. The mixing motor 103 is started to drive the mixing plate 105 through the mixing shaft 104 to mix the construction waste powder and the crushed filter residue. After mixing is completed, the cement pump 502 is started to extract cement. 5% cement is added into the mixing box 101 through the cement pipe 503 as a binder. After mixing is completed again, the opening and closing shaft 201 is manually rotated to rotate the opening and closing plate 202 to discharge the mixed material that has stuck together, so as to avoid the internal lumps blocking the discharge port 106.

[0073] Then, the conveyor motor 608 is started to drive the first conveyor roller 602 to rotate. The first conveyor roller 602 drives the second conveyor roller 605 to rotate through the conveyor belt 607. The first conveyor belt 603 and the second conveyor belt 606 work to lift the mixture and transport it into the interior of the enclosure 710.

[0074] Then, the mixture is manually filled into the inside of the pressing mold frame 709. The pressing motor 701 is started to drive the left and right rotating screws 702 to rotate. The upper pressing block 704 is driven to descend through the upper connecting plate 703 and the lower pressing block 706 is driven to rise through the lower connecting plate 705. The descending upper pressing block 704 and the rising lower pressing block 706 enter the inside of the pressing mold frame 709 together. The pressed mixture is a non-fired brick.

[0075] Finally, after pressing is completed, the pressing motor 701 reverses to drive the lower pressing block 706 and the upper pressing block 704 to reset. The unfired bricks on the lower pressing block 706 are then manually removed for natural curing and their compressive strength and leaching toxicity are tested.

[0076] Compared with related technologies, the energy-saving building material production equipment provided by this invention has the following beneficial effects:

[0077] By setting up a pressing motor 701 to drive the lower pressing block 706 and the upper pressing block 704 to jointly press the non-fired bricks, the problem of uneven density leading to substandard strength of the non-fired bricks is avoided. At the same time, using only one pressing motor 701 to complete uniform compaction avoids the need to use multiple power sources to drive movement in two directions, saving energy. After the filter residue is crushed, it is thoroughly mixed with construction waste powder and cement binder to realize the resource utilization of solid waste and reduce raw material costs. After mixing, the material is discharged in time through the opening and closing plate 202 to avoid clumping and blockage. The left and right rotating screw 702 drives the upper pressing block 704 and the lower pressing block 706 to press in opposite directions, improving the molding efficiency and density of the non-fired bricks. After molding, natural curing combined with compressive strength and leaching toxicity testing ensures that the product quality meets the standards.

[0078] Second Embodiment

[0079] Please refer to the following: Figures 12-14 Based on the energy-saving building material production equipment provided in the first embodiment of this application, the second embodiment of this application proposes another energy-saving building material production equipment. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0080] Specifically, the energy-saving building material production equipment provided in the second embodiment of this application differs in that a leveling mechanism 8 is fixedly installed on one side of the pressing box 708. The leveling mechanism 8 includes a motor 801, which is fixedly installed on one side of the pressing box 708 via a fixed base. Two leveling screw rotating frames 805 are fixedly installed on one side of the pressing box 708. A leveling screw 802 is rotatably installed between one side of the pressing box 708 and one of the leveling screw rotating frames 805. One end of the leveling screw 802 is fixedly connected to the output shaft of the motor 801. A pushing plate 804 is threadedly connected to the surface of the leveling screw 802. A leveling auxiliary rod 803 is fixedly installed between one side of the pressing box 708 and one of the leveling screw rotating frames 805. The surface of the pushing plate 804 is slidably installed with the interior of the leveling auxiliary rod 803.

[0081] The transverse groove 712 is provided with a push plate 10. A cylinder 9 is fixedly connected to one side of the push plate 10. The cylinder 9 is fixedly installed on the ground by a support. A recycling box 11 and a placement rack 12 are fixedly installed on one side of the pressing box 708. The recycling box 11 is adapted to the push plate 804 and the placement rack 12 is adapted to the push plate 10. The first conveyor roller 602 is connected to the opening and closing shaft 201 by a connecting belt 13.

[0082] In actual use, the two transverse grooves 712 are the same size as the ejector plate 10; the opening and closing plate 202 does not contact the first conveyor belt 603.

[0083] The working principle of the energy-saving building material production equipment provided in this embodiment is as follows:

[0084] First, the first conveyor roller 602 is connected to the opening and closing shaft 201 via the connecting belt 13. When the conveying mechanism 6 is started to convey the mixture, the opening and closing shaft 201 rotates, causing the opening and closing plate 202 to automatically flip, continuously discharging the mixture that is stuck together onto the first conveyor belt 603. There is no need for manual flipping, and the speed is matched. The faster the first conveyor belt 603 rotates, the faster the mixture is discharged.

[0085] Then, when the mixture is conveyed to the enclosure 710, the first conveyor belt 603 stops and the opening and closing plate 202 stops flipping to feed the material. At this time, the motor 801 is started. The motor 801 drives the flattening screw 802 to rotate. The flattening screw 802 drives the push plate 804 to move. The push plate 804 moves to fill the pressing mold frame 709. After moving to the end point, the excess mixture is pushed into the recycling box 11 for recycling and reuse. At the same time, it can avoid incomplete pressing when the upper pressing block 704 presses down. Then the pressing work is carried out. After the pressing is completed, the lower pressing block 706 and the upper pressing block 704 are reset.

[0086] Then, the upper pressure block 704 is reset. At this time, the motor 801 reverses to remove the residual mixture pressed at the bottom of the upper pressure block 704 to avoid excessive adhesion and thickness difference, which would affect the quality of the non-fired bricks.

[0087] Finally, when the lower pressing block 706 is reset, the cylinder 9 pushes the ejector plate 10 to push out the unfired bricks on the lower pressing block 706. The unfired bricks are pushed onto the placement rack 12 and then stop. At the same time, the residual mixture pressed on the top of the lower pressing block 706 is removed to avoid excessive adhesion and thickness difference, which would affect the quality of the unfired bricks.

[0088] Compared with related technologies, the energy-saving building material production equipment provided in this embodiment has the following beneficial effects:

[0089] The first conveyor roller 602 is connected to the opening and closing shaft 201 by the connecting belt 13, realizing automated linkage of material feeding. There is no need for manual turning of the mixture, and the feeding rate is synchronized with the first conveyor belt 603. The faster the conveyor belt rotates, the faster the material is fed, which greatly improves the feeding efficiency. The push plate 804 automatically completes the filling of the pressing mold frame 709 and the recycling of excess mixture, which not only avoids raw material waste, but also ensures that the mixture is fully pressed, improving the raw material utilization rate and pressing effect. At the same time, after pressing, the push plate 804 automatically scrapes off the mixture residue at the bottom of the upper pressing block 704 to avoid excessive adhesion and thickness difference that affects the quality of the non-fired bricks. The cylinder 9 pushes the ejector plate 10 to push the non-fired bricks on the lower pressing block 706 onto the placement rack 12 and then stops. At the same time, the mixture residue at the top of the lower pressing block 706 is removed to avoid excessive adhesion and thickness difference that affects the quality of the non-fired bricks.

[0090] Methods for the resource utilization of lithium mica waste residue

[0091] The method for resource utilization of lithium mica waste residue includes the following steps:

[0092] S1: Synthesis of calcium polysulfides

[0093] Raw material selection: Industrial-grade calcium sulfide and sulfur are mixed in a certain proportion to ensure that the sulfur content of the reactants meets the synthesis requirements;

[0094] Reaction conditions: After the mixed raw materials are homogenized by ball milling, they are heated to a suitable temperature under inert gas protection and reacted at a constant temperature for a certain time to generate calcium polysulfide products with specific sulfur chain lengths;

[0095] S2: Preparation of roasted clinker

[0096] Raw material ratio: Lithium mica minerals and calcium-based additives are mixed in an optimized ratio to form homogeneous raw meal;

[0097] Calcination process: After the raw material is preheated, it is calcined in a high-temperature muffle furnace in stages, including pre-oxidation, lattice activation and stabilization stages, to finally obtain a porous clinker.

[0098] S3: Immersion and Simultaneous Curing

[0099] Pulping process: After the clinker is crushed, it is ball-milled with water at a suitable solid-liquid ratio to obtain leachate with qualified fineness;

[0100] Adding curing agent: Add an appropriate amount of calcium polysulfide as the main curing agent, which uses its sulfur chain structure to complex heavy metals. Combined with the addition of high specific adsorption materials such as magnesium aluminum silicate, the stabilization effect is enhanced through surface adsorption and interlayer retention.

[0101] Reaction control: Adjust the slurry to an alkaline environment and complete the heavy metal immobilization reaction under appropriate temperature and stirring conditions;

[0102] S4: Solid-liquid separation

[0103] The slurry is efficiently separated by a filter press, the brine is purified and reused in the lithium extraction system, and the filter residue is used in the resource utilization process.

[0104] Building material preparation: Filter residue and construction waste are mixed in proportion, an appropriate amount of binder is added, and the mixture is pressed under high pressure to form a building material blank. After the blank is fully cured naturally, a non-fired brick that meets the building material standards is obtained.

[0105] First Embodiment

[0106] S1: Calcium polysulfide ( Synthesis of )

[0107] Raw material ratio: Industrial grade calcium sulfide ( (purity ≥90%) and sulfur ( Weigh and mix at a mass ratio of 1:0.4;

[0108] Reaction conditions: Load the mixed raw materials into a ball mill and ball mill at 300 rpm for 30 minutes to ensure uniform mixing. Transfer to a sealed reaction vessel, purge with nitrogen (flow rate 1 L / min) for protection, heat to 250°C, and react at a constant temperature for 1.5 hours. Allow to cool naturally to room temperature.

[0109] Product characteristics: Forms calcium polysulfide with a sulfur chain length of n=5 ( It contains ≥65% sulfur and is a gray-black powder.

[0110] S2: Preparation of roasted clinker

[0111] Raw material ratio: lithium mica, calcium sulfate ( ), calcium carbonate ( Mix at a mass ratio of 1:0.3:0.2;

[0112] Calcination process: After the raw material is preheated at 300℃ for 30 minutes, it is transferred to a rotary kiln, heated to 950℃, and calcined at a constant temperature for 1 hour. After cooling to 80℃, loose and porous clinker is obtained.

[0113] S3: Immersion and Simultaneous Curing

[0114] Pulping process: Clinker and deionized water are added to a ball mill at a solid-liquid ratio of 1:1.2 and ball-milled at 300 rpm until the fineness is ≥80% (-200 mesh).

[0115] Curing agent addition: Calcium polysulfide: 0.1% of clinker mass (i.e., 1kg / ton of slag), magnesium aluminum silicate: 0.2% of clinker mass (specific surface area ≥230m² / g, particle size 5000 mesh).

[0116] Reaction control: Adjust the pH of the slurry to 10.5 with 15% lime slurry, and react at 60℃ and 500 rpm for 40 minutes to form... Complexes and colloid.

[0117] S4: Solid-Liquid Separation and Resource Utilization

[0118] Filtration separation: A filter press (filtration pressure 0.1MPa) is used to separate purified brine (for reuse in the lithium extraction system) and filter residue (moisture content ≤25%).

[0119] Building material preparation: Mixing ratio: Filter residue and construction waste (red brick powder: granite sawdust = 3:1) are mixed at a mass ratio of 6:4;

[0120] Molding process: Add 5% cement as a binder and press it into shape under a pressure of 20MPa (brick size 240mm×115mm×53mm).

[0121] Maintenance conditions: Natural curing for 7 days, followed by testing of compressive strength and leaching toxicity.

[0122] Compared with related technologies, the method for resource utilization of lithium mica waste provided by the present invention has the following beneficial effects:

[0123] By solidifying beryllium thallium polysulfide calcium in lithium extraction waste from lepidolite, the serious solid waste pollution problem brought about by the rapid development of the lepidolite lithium extraction industry has been solved, reducing toxicity. A beryllium thallium solidification technology with high efficiency, stability, low cost and potential for building materials has been developed. The filter residue is fully mixed with construction waste powder and cement binder to realize the resource utilization of solid waste and reduce raw material costs.

[0124] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. Energy-saving building material production equipment, characterized by the fact that, Include: The crushing mechanism is placed on the ground by the support, which is used to crush the filter residue; The mixing mechanism is used to mix the construction waste material, cement and crushed filter residue into a mixture; The opening and closing mechanism is used to discharge the mixture; The construction waste mechanism is used to convey the construction waste to the inside of the mixing mechanism; The cement mechanism is used to convey the cement to the inside of the mixing mechanism; The pressing mechanism is provided on the ground, which comprises a pressing motor, a pressing box, the output shaft of the pressing motor is fixedly connected with a left and right rotating screw rod, the left and right rotating screw rod is fixedly installed on the ground through a rotating frame, the surface of the left and right rotating screw rod is respectively threadedly connected with an upper connecting plate and a lower connecting plate, a pressing auxiliary rod is slidably installed on one side of the upper connecting plate and the lower connecting plate, the pressing auxiliary rod is fixedly installed on the ground through a rotating frame, the bottom of the upper connecting plate is fixedly installed with an upper pressing block through a connecting column, the top of the lower connecting plate is fixedly installed with a lower pressing block through a connecting column, the pressing box is provided on the ground through two supporting plates and is located between the upper pressing block and the lower pressing block, a pressing mold is formed in the inside of the pressing box, a surrounding plate is fixedly installed on the top of the pressing box, a horizontal groove is formed in the inside of the two supporting plates, the upper pressing block, the lower pressing block and the pressing mold are matched and installed; The conveying mechanism is used to convey the mixture to the inside of the pressing mechanism.

2. The energy-saving building material production apparatus according to claim 1, characterized by The crushing mechanism includes a crushing box, which is placed on the ground by the support, a material guide hole is fixedly installed on the top of the crushing box, a crushing motor is fixedly installed on the top of the material guide hole through a fixed frame, a crushing shaft is fixedly connected with the output shaft of the crushing motor, two groups of crushing cutters are fixedly installed on the surface of the crushing shaft, a plurality of through holes are formed in the bottom of the crushing box.

3. The energy-saving building material production apparatus according to claim 2, wherein The mixing mechanism is fixedly installed on the bottom of the crushing box, which comprises a mixing motor and a mixing box, the mixing motor is fixedly installed on the bottom of the crushing box, the mixing box is fixedly installed on the ground through a support, an upper cover is fixedly installed on the top of the mixing box, the upper cover is matched and installed with the crushing box, a mixing shaft is fixedly connected with the output shaft of the mixing motor, a plurality of mixing plates are fixedly installed on the surface of the mixing shaft, a discharge hole is fixedly installed on the bottom of the mixing box.

4. The energy-saving building material production apparatus according to claim 3, wherein The opening and closing mechanism is rotatably installed in the inside of the discharge hole, which comprises an opening and closing shaft, the opening and closing shaft is rotatably installed in the inside of the discharge hole, one end of the opening and closing shaft penetrates through one side of the discharge hole and extends to the outside, an opening and closing plate is fixedly installed on the surface of the opening and closing shaft, the opening and closing plate is matched and installed with the discharge hole.

5. The energy-saving building material production apparatus according to claim 3, wherein The construction waste mechanism is provided on the ground, which comprises a construction waste barrel, the construction waste barrel is provided on the ground, a material pump is communicated with the construction waste barrel through a connecting pipe on one side of the construction waste barrel, the discharge end of the material pump is communicated with the top of the upper cover through a material pipe.

6. The energy-saving building material production apparatus according to claim 3, wherein The cement mechanism is arranged on the ground, the cement mechanism comprises a cement barrel, the cement barrel is arranged on the ground, one side of the cement barrel is communicated with a cement pump through a connecting pipe, and a discharge end of the cement pump is communicated with the top of the upper cover through a cement pipe.

7. The energy-saving building material production apparatus according to claim 4, wherein The conveying mechanism is arranged on the ground, the conveying mechanism comprises first conveying plates and second conveying plates, the first conveying plates and the second conveying plates are both fixedly installed on the ground through support columns, two first conveying rollers are rotatably installed in the interiors of the two first conveying plates, two first conveying belts are drivingly connected between the two first conveying rollers, one end of one of the first conveying rollers is fixedly connected with a conveying motor, the conveying motor is fixedly installed on the ground through a support base, three second conveying rollers are rotatably installed in the interiors of the two second conveying plates, three second conveying belts are drivingly connected between the three second conveying rollers, one of the second conveying rollers and one of the first conveying rollers are drivingly connected through a conveying belt, the first conveying belts are installed in matching relationship with the opening and closing plates, and the second conveying belts are installed in matching relationship with the surrounding plates.

8. The energy-saving building material production apparatus according to claim 7, wherein The side of the pressing box is fixedly installed with a flattening mechanism, the flattening mechanism comprises a motor, the motor is fixedly installed on one side of the pressing box through a fixed seat, two flattening screw rod rotating frames are fixedly installed on one side of the pressing box, a flattening screw rod is rotatably installed between one side of the pressing box and one of the flattening screw rod rotating frames, one end of the flattening screw rod is fixedly connected with an output shaft of the motor, a flattening plate is screwedly connected to the surface of the flattening screw rod, a flattening auxiliary rod is fixedly installed between one side of the pressing box and one of the flattening screw rod rotating frames, and the surface of the flattening plate is slidingly installed with the interior of the flattening auxiliary rod.

9. The energy-saving building material production apparatus according to claim 8, wherein The interior of the transverse groove is provided with a pushing-out plate, one side of the pushing-out plate is fixedly connected with an air cylinder, the air cylinder is fixedly installed on the ground through a support base, one side of the pressing box is fixedly installed with a recycling box and a placing frame, the recycling box is installed in matching relationship with the flattening plate, the placing frame is installed in matching relationship with the pushing-out plate, and the first conveying roller is drivingly connected with the opening and closing shaft through a connecting belt.

10. A method for resource utilization of lithium mica waste residue, wherein the energy-saving building material production device according to any one of claims 1-9 is used, characterized in that, The method comprises the following steps: S1: synthesis of calcium polysulfide Raw material selection: industrial-grade calcium sulfide and sulfur are mixed in a certain proportion to ensure that the sulfur content of the reactants meets the synthesis requirements; Reaction conditions: after the mixed raw materials are uniformly mixed by ball milling, they are heated to an appropriate temperature under inert gas protection, and constant temperature reaction is carried out for a certain period of time to generate calcium polysulfide products with a specific sulfur chain length; S2: preparation of calcined clinker Raw material ratio: lithium mica minerals and calcium-based additives are mixed in an optimized ratio to form homogeneous raw materials; Calcination process: the raw materials are preheated and then calcined in a high-temperature muffle furnace in stages, including pre-oxidation, lattice activation and stabilization stages, to finally obtain a porous clinker; S3: leaching and synchronous solidification Pulping process: after the clinker is crushed, it is ball milled with water in an appropriate solid-liquid ratio to obtain leaching slurry with qualified fineness; Solidification agent addition: Add an appropriate amount of calcium polysulfide as the main solidification agent, which can complex heavy metals through its sulfur chain structure, and add high specific adsorption materials such as magnesium aluminum silicate to enhance the stability effect through surface adsorption and interlayer interception; Reaction control: Adjust the slurry to an alkaline environment and complete the heavy metal immobilization reaction under appropriate temperature and stirring conditions; S4: Solid-liquid separation Use filter pressing equipment for efficient separation of the slurry, purify the brine for lithium extraction system, and filter residue into the resource utilization process; Building material preparation: Mix the filter residue with construction waste in a certain proportion, add an appropriate amount of binder, and press under high pressure to form building material blanks. After sufficient natural curing, the blanks can meet the standards of non-burning bricks.

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