Formula, production process and production equipment of autoclaved aerated concrete slab

Abstract

The invention relates to an autoclaved aerated concrete slab formula, a production process and production equipment, and belongs to the technical field of concrete slab production, the autoclaved aerated concrete slab formula comprises the following raw materials by weight: 15%-25% of lime, 10%-20% of cement, 50%-65% of silica sand, 10%-30% of gypsum, 0.05%-0.15% of aluminum paste, 0.5%-3% of carbide slag and 0.5%-3% of mineral processing waste residue, and the gypsum is an industrial byproduct phosphogypsum. The ardealite resource utilization method has the effect of conveniently utilizing the ardealite resource.

Description

Technical Field

[0001] The present application relates to the technical field of concrete slab production, and in particular to a formula, production process and production equipment for autoclaved aerated concrete slabs. Background Art

[0002] Autoclaved aerated concrete (AAC) is a lightweight, porous building material with excellent thermal insulation, sound insulation, and fire resistance. It is primarily manufactured through a process of mixing, pouring, aerating, cutting, and autoclaving aerated concrete (AAC). AAC has a low density, typically between 400 and 800 kg / m³, but offers high strength, meeting structural requirements. Its porous structure provides excellent thermal insulation and can effectively reduce a building's energy consumption.

[0003] However, aluminum paste is a gas-generating agent, and the amount of gypsum added during normal production is between 2% and 5%. However, there are abundant phosphogypsum resources around this production site. Due to limited application channels, a large amount of phosphogypsum is accumulated in the surrounding phosphate fertilizer factories, which has a certain impact on the environment and puts great pressure on the phosphate fertilizer factories. Summary of the Invention

[0004] In order to facilitate the utilization of phosphogypsum resources, the present application provides a formula for autoclaved aerated concrete panels, a production process, and production equipment.

[0005] In the first aspect, the present application provides a formula for an autoclaved aerated concrete board, which adopts the following technical solution: A formula for an autoclaved aerated concrete board comprises the following raw materials in percentage by weight: 15%-25% lime, 10%-20% cement, 50%-65% silica sand, 10%-30% gypsum, 0.05%-0.15% aluminum paste, 0.5%-3% carbide slag, and 0.5%-3% mineral processing waste residue. The gypsum is industrial by-product phosphogypsum.

[0006] In a second aspect, the present application provides a process for producing autoclaved aerated concrete panels, which employs the following technical solutions: A process for producing autoclaved aerated concrete panels, which produces autoclaved aerated concrete panels using a concrete formula, further comprising: S1: Raw material pretreatment equipment, which crushes bulk materials (such as quicklime, gypsum, etc.) into particle sizes suitable for subsequent processing; S2: Secondary processing of raw materials, using a ball mill to grind the raw materials into finer particles to improve reaction efficiency; S3: The principle is load-bearing and adopts a fully automatic metering system controlled by a microcomputer to ensure that various raw materials are mixed in precise proportions; S4: Material mixing and pouring: The mixer mixes various raw materials (such as siliceous materials, calcium materials, gas-generating materials and water) to form a uniform slurry; the pouring machine pours the mixed slurry into the mold to form the initial shape of the board; S5: Plate cutting device cuts the blank into the set size; the turning hanger turns the mold over for cutting operation; S6: Autoclave curing equipment, which performs high-temperature and high-pressure steam curing on the cut green body to achieve the expected physical properties; Steam curing car: used to carry the green body in the autoclave for steam curing.

[0007] In a third aspect, the present application provides an autoclaved aerated concrete board production device, which adopts the following technical solutions: A device for producing autoclaved aerated concrete panels is provided for completing secondary processing of raw materials, comprising a ball mill, wherein a filter screen is provided in the ball mill, the filter screen is attached to the inner wall of the ball mill, the filter screen is separated from the discharge port of the ball mill, the filter screen is in a long strip shape and its length is equal to the length of the ball mill, the long side of the filter screen is slidably provided on the inner wall of the ball mill, the ball mill is provided with a driving device for driving the long side of the filter screen to slide so as to separate the filter screen from the inner wall and make the filter screen suspended in the air; a cover is provided in the ball mill, and the cover is used to cover the mesh of the filter screen when the ball mill grinds the material.

[0008] Optionally, the narrow side of the filter screen is fixedly provided with a slide rail, the slide rail is made of an elastic rod, the initial position of the slide rail is in contact with the inner wall of the ball mill, the driving device includes sliders arranged at both ends of the slide rail, the sliders are slidably arranged on the inner wall of the ball mill, and the sliders slide along the inner wall of the ball mill. The driving device also includes an annular guide rail arranged in the ball mill, the annular guide rail is fixedly arranged on the inner wall of the ball mill, and the sliders are slidably arranged on the annular guide rail. The driving device also includes a first driving member for driving the slider to slide along the annular guide rail or driving the sliders at both ends to move toward each other to pull the filter screen apart from the inner wall of the ball mill.

[0009] Optionally, the first driving member includes a driving motor arranged in the slider, the length direction of the driving motor output shaft is parallel to the axial direction of the ball mill, and the first driving member also includes a gear arranged on the driving motor and a rack arranged on the annular guide rail, the gear and the rack are engaged with each other, when the driving motors on both sides run in the same direction, the filter screen is driven to move along the inner wall of the ball mill, and when the driving motors on both sides run in opposite directions, the filter screen is driven to move in a direction away from the inner wall of the ball mill.

[0010] Optionally, the first driving member includes a driving motor arranged in the slider, the length direction of the driving motor output shaft is parallel to the axial direction of the ball mill, and the first driving member also includes a gear arranged on the driving motor and a rack arranged on the annular guide rail, the gear and the rack are engaged with each other, when the driving motors on both sides run in the same direction, the filter screen is driven to move along the inner wall of the ball mill, and when the driving motors on both sides run in opposite directions, the filter screen is driven to move in a direction away from the inner wall of the ball mill.

[0011] Optionally, the surfaces of the two mounting rods facing each other are provided with receiving grooves, and both ends of the wear-resistant cloth are provided on the inner walls of the receiving grooves. When the wear-resistant cloth is stored, the wear-resistant cloth is folded and located in the receiving grooves.

[0012] Optionally, the second driving member includes a storage motor arranged on the filter screen and a traction rope arranged on the output shaft of the storage motor, the length direction of the traction rope is parallel to the length direction of the filter screen, and both ends of the mounting rod are fixed on the traction rope.

[0013] Optionally, a protective box is provided on the filter net, and the storage motor is provided in the protective box.

[0014] Optionally, a diagonal brace is provided on the side of the mounting rod, and the other end of the diagonal brace is supported on the filter net.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. By collecting phosphogypsum in the environment and replacing the existing aluminum paste as a gas generating agent, the large amount of phosphogypsum in the phosphate fertilizer plant can be recycled, thereby reducing the pressure on the phosphate fertilizer plant and alleviating pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an autoclaved aerated concrete board production device according to an embodiment of the present application; Figure 2 This is a cross-sectional view of an autoclaved aerated concrete board production device according to an embodiment of the present application; Figure 3 This is a cross-sectional view of a slider in an autoclaved aerated concrete panel production device according to an embodiment of the present application; Figure 4 This is a schematic diagram of a covering member in an autoclaved aerated concrete board production device according to an embodiment of the present application; Figure 5 It is a side view of a covering component in an autoclaved aerated concrete board production device according to an embodiment of the present application.

[0017] Description of reference numerals: 1, ball mill; 2, filter screen; 3, discharge port; 4. Driving device; 41. Slider; 42. Annular guide rail; 43. Driving motor; 44. Gear; 45. Rack; 5. Cover; 51. Mounting rod; 52. Wear-resistant cloth; 53. Storage motor; 54. Traction rope; 6. Slide rail; 7. Storage slot; 8. Protective box. DETAILED DESCRIPTION

[0018] The following is combined with Figure 1-5 This application is further described in detail.

[0019] The present invention discloses a formula for autoclaved aerated concrete panels. The autoclaved aerated concrete panel production equipment includes the following raw materials in percentage by weight: 15%-25% lime, 10%-20% cement, 50%-65% silica sand, 10%-30% gypsum, 0.05%-0.15% aluminum paste, 0.5%-3% carbide slag, and 0.5%-3% mineral processing waste residue. The gypsum is industrial byproduct phosphogypsum.

[0020] The implementation principle of the autoclaved aerated concrete board production equipment of the present application embodiment is as follows: By collecting phosphogypsum in the environment and replacing the existing aluminum paste as a gas generating agent, a large amount of phosphogypsum in the phosphate fertilizer plant can be recycled, thereby reducing the pressure on the phosphate fertilizer plant and alleviating pollution to the environment.

[0021] The present application embodiment discloses a process for producing autoclaved aerated concrete panels, which is produced by using a concrete formula, and further includes: S1: Raw material pretreatment equipment, which crushes bulk materials (such as quicklime, gypsum, etc.) into particle sizes suitable for subsequent processing; S2: Secondary processing of raw materials, using ball mill 1 to grind the raw materials into finer particles to improve reaction efficiency; S3: The principle is load-bearing and adopts a fully automatic metering system controlled by a microcomputer to ensure that various raw materials are mixed in precise proportions; S4: Material mixing and pouring: The mixer mixes various raw materials (such as siliceous materials, calcium materials, gas-generating materials and water) to form a uniform slurry; the pouring machine pours the mixed slurry into the mold to form the initial shape of the board; S5: Plate cutting device cuts the blank into the set size; the turning hanger turns the mold over for cutting operation; S6: Autoclave curing equipment, which performs high-temperature and high-pressure steam curing on the cut green body to achieve the expected physical properties; Steam curing car: used to carry the green body in the autoclave for steam curing.

[0022] The implementation principle of the production process of an autoclaved aerated concrete board in the embodiment of the present application is as follows: By physically processing the raw material properties, making the various ingredients bear weight, and then putting them into a mixer for stirring and mixing, the stirred materials are then injected into a mold to form the board into a preliminary shape. When the board reaches the designed strength, the board is cut and then subjected to high-temperature and high-pressure steam curing to ensure that the board achieves the expected material properties.

[0023] The present application discloses an autoclaved aerated concrete board production device for completing secondary processing of raw materials. Figure 1 and Figure 2 , including a ball mill 1, a filter screen 2 is provided in the ball mill 1, the filter screen 2 is attached to the inner wall of the ball mill 1, the filter screen 2 and the discharge port 3 of the ball mill 1 are in a separated state, the filter screen 2 is long and the length is equal to the length of the ball mill 1, the long side of the filter screen 2 is slidably provided on the inner wall of the ball mill 1, and the ball mill 1 is provided with a driving device 4 for driving the long side of the filter screen 2 to slide so that the filter screen 2 is separated from the inner wall and the filter screen 2 is suspended in the air; a cover 5 is provided in the ball mill 1, and the cover 5 is used to cover the mesh of the filter screen 2 when the ball mill 1 grinds the material.

[0024] When the ball mill 1 performs secondary processing on the raw materials, the raw materials are injected into the ball mill 1, and the steel balls are put into the ball mill 1. The ball mill 1 is started and rotated. The rotation of the ball mill 1 drives the steel balls to move and run in an arc. The steel balls hit the materials and perform secondary processing on the materials. The processed materials are discharged from the discharge port 3 of the ball mill 1. After the materials are discharged, a lot of materials will inevitably adhere to the steel balls, resulting in a relatively low utilization rate of the materials. Therefore, after the materials are discharged, the driving device 4 acts on the filter screen 2 to separate the filter screen 2 from the inner wall of the ball mill 1. At this time, the steel balls are located on the filter screen 2. The ball mill 1 is in a suspended state and then started again. The ball mill 1 drives the steel balls to sieve on the filter screen 2. The steel balls collide with each other and the attached materials fall off and are then discharged through the discharge pipe, thereby improving the utilization rate of the materials. Furthermore, when the steel balls perform secondary processing on the materials, they are covered on the filter screen 2 through the cover 5. The steel balls and the materials are both located on the cover 5, which makes it easier for the steel balls to hit the materials when throwing them horizontally. At the same time, the filter screen 2 is covered by the cover 5, which reduces the possibility of the steel balls damaging the filter screen 2.

[0025] Reference Figure 2 and Figure 3In the embodiment of the present application, a slide rail 6 is fixedly provided on the narrow side of the filter screen 2. The slide rail 6 is made of an elastic rod. The slide rail 6 is made of an elastic rod so that the slide rail 6 can be deformed to adapt to the inner wall of the ball mill 1. The initial position of the slide rail 6 is in contact with the inner wall of the ball mill 1. The driving device 4 includes sliders 41 provided at both ends of the slide rail 6. The sliders 41 are slidably provided on the inner wall of the ball mill 1. The sliders 41 slide along the inner wall of the ball mill 1. The driving device 4 also includes an annular guide rail 42 provided in the ball mill 1. The annular guide rail 42 is fixedly provided on the inner wall of the ball mill 1. The slider 41 is slidably provided on the annular guide rail 42. The driving device 4 also includes a first driving member for driving the slider 41 to slide along the annular guide rail 42 or driving the sliders 41 at both ends to move toward each other to pull the filter screen 2 away from the inner wall of the ball mill 1. Reference Figure 2 and Figure 3 The first driving member includes a driving motor 43 arranged in the slider 41. The length direction of the output shaft of the driving motor 43 is parallel to the axial direction of the ball mill 1. The first driving member also includes a gear 44 arranged on the driving motor 43 and a rack 45 arranged on the annular guide rail 42. The gear 44 and the rack 45 are engaged with each other. When the driving motors 43 on both sides run in the same direction, the filter screen 2 is driven to move along the inner wall of the ball mill 1. When the driving motors 43 on both sides run in the opposite directions, the filter screen 2 is driven to move in the direction away from the inner wall of the ball mill 1.

[0026] When the ball mill 1 processes the material, the cover 5 covers the filter screen 2. After the material processing is completed, the drive motor 43 is first started. The drive motor 43 drives the gear 44 to rotate. The rotation of the gear 44 drives the slider 41 to slide along the annular guide rail 42. The sliding of the slider 41 drives the slide rail 6 and the filter screen 2 to move in the ball mill 1, thereby moving the filter screen 2 upward and separating the filter screen 2 from the bottom of the ball mill 1. Then, the steel balls are screened to separate the materials attached to the steel balls. The operation is simple and convenient.

[0027] Reference Figure 3 、 Figure 4 and Figure 5 In the embodiment of the present application, the covering member 5 includes two mounting rods 51 arranged on the filter screen 2 and a wear-resistant cloth 52 arranged between the two mounting rods 51, one mounting rod 51 is fixedly arranged on the filter screen 2, and the other mounting rod 51 is slidably arranged on the filter screen 2, and the wear-resistant cloth 52 is folded. The covering member 5 also includes a second driving member for driving the mounting rod 51 to slide, and the second driving member includes a storage motor 53 arranged on the filter screen 2 and a traction rope 54 arranged on the output shaft of the storage motor 53. The length direction of the traction rope 54 is parallel to the length direction of the filter screen 2, and the two ends of the mounting rod 51 are respectively fixed on the traction rope 54.

[0028] When the ball mill 1 processes the material, the traction rope 54 is wound up by the storage motor 53, and the winding of the traction rope 54 drives the installation rod 51 to move, and the movement of the installation rod 51 drives the covering cloth to be spread on the filter screen 2, and then the material is processed for the second time; when the material on the steel balls is screened, the ball mill 1 is first started, and the ball mill 1 drives the filter screen 2 to run to the top of the ball mill 1 to separate the steel balls from the filter screen 2, and then the storage motor 53 is started, and the storage motor 53 winds up the traction rope 54, and the winding of the traction rope 54 drives the installation rod 51 to move and store the wear-resistant cloth 52. At this time, The filter screen 2 is exposed, and the ball mill 1 is started again. The ball mill 1 drives the filter screen 2 to the bottom, so that the steel balls are located on the filter screen 2, and then the drive motor 43 is started. The drive motor 43 drives the gear 44 to rotate, and the rotation of the gear 44 drives the slider 41 to slide along the annular guide rail 42. The sliding of the slider 41 drives the slide rail 6 and the filter screen 2 to move in the ball mill 1, so that the filter screen 2 moves upward, so that the filter screen 2 is separated from the bottom of the ball mill 1, and then the steel balls are screened to separate the materials attached to the steel balls; at the same time, the gear 44 can be driven by the drive motor 43 to rotate, and the gear 44 moves on the rack 45, thereby driving the filter screen 2 to move along the inner wall of the ball mill 1, which is also convenient for separating the steel balls from the filter screen 2 or placing the steel balls on the filter screen 2.

[0029] Reference Figure 3 、 Figure 4 and Figure 5 In the embodiment of the present application, the surfaces of the two mounting rods 51 facing each other are provided with storage grooves 7, and both ends of the wear-resistant cloth 52 are arranged on the inner walls of the storage grooves 7. When the wear-resistant cloth 52 is stored, the wear-resistant cloth 52 is in a folded state and is located in the storage grooves 7; under the action of the storage grooves 7, it is convenient to store the wear-resistant cloth 52 in the storage grooves 7.

[0030] Reference Figure 3 、 Figure 4 and Figure 5 In order to reduce the possibility of the steel ball damaging the storage motor 53, a protection box 8 is provided on the filter 2, and the storage motor 53 is arranged in the protection box 8.

[0031] Reference Figure 3 、 Figure 4 and Figure 5 Furthermore, in order to facilitate the movement of the mounting rod 51 along the filter screen 2, a diagonal brace is provided on the side of the mounting rod 51, and the other end of the diagonal brace is supported on the filter screen 2; under the action of the diagonal brace, the possibility of the mounting rod 51 tipping over is reduced.

[0032] The implementation principle of the autoclaved aerated concrete board production equipment of the present application embodiment is as follows: When the ball mill 1 processes the material, the traction rope 54 is wound up by the storage motor 53, and the winding of the traction rope 54 drives the installation rod 51 to move, and the movement of the installation rod 51 drives the covering cloth to be spread on the filter screen 2, and then the material is processed for the second time; when the material on the steel balls is screened, the ball mill 1 is first started, and the ball mill 1 drives the filter screen 2 to run to the top of the ball mill 1 to separate the steel balls from the filter screen 2, and then the storage motor 53 is started, and the storage motor 53 winds up the traction rope 54, and the winding of the traction rope 54 drives the installation rod 51 to move and store the wear-resistant cloth 52. At this time, The filter screen 2 is exposed, and the ball mill 1 is started again. The ball mill 1 drives the filter screen 2 to the bottom, so that the steel balls are located on the filter screen 2. The drive motor 43 is started again, and the drive motor 43 drives the gear 44 to rotate. The rotation of the gear 44 drives the slider 41 to slide along the annular guide rail 42. The sliding of the slider 41 drives the slide rail 6 and the filter screen 2 to move in the ball mill 1, so that the filter screen 2 moves upward, and the filter screen 2 is separated from the bottom of the ball mill 1. Then the steel balls are screened to separate the materials attached to the steel balls.

[0033] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A formula of autoclaved aerated concrete, characterized by: The method comprises the following raw materials in the following weight percentages: 15%-25% lime, 10%-20% cement, 50%-65% silica sand, 10%-30% gypsum, 0.05%-0.15% aluminum paste, 0.5%-3% carbide slag and 0.5%-3% mineral processing waste residue, wherein the gypsum is industrial by-product phosphogypsum.

2. A process for producing autoclaved aerated concrete, comprising producing an autoclaved aerated concrete board by using the concrete formula according to claim 1, characterized in that: Also includes; S1: Raw material pretreatment equipment, which crushes bulk materials (such as quicklime, gypsum, etc.) into particle sizes suitable for subsequent processing; S2: secondary processing of raw materials, using a ball mill (1) to grind the raw materials into finer particles to improve reaction efficiency; S3: The principle is load-bearing and adopts a fully automatic metering system controlled by a microcomputer to ensure that various raw materials are mixed in precise proportions; S4: Material mixing and pouring: The mixer mixes various raw materials (such as siliceous materials, calcium materials, gas-generating materials and water) to form a uniform slurry; the pouring machine pours the mixed slurry into the mold to form the initial shape of the board; S5: Plate cutting device cuts the blank into the set size; the turning hanger turns the mold over for cutting operation; S6: Autoclave curing equipment, which performs high-temperature and high-pressure steam curing on the cut green body to achieve the expected physical properties; Steam curing car: used to carry the green body in the autoclave for steam curing.

3. An autoclaved aerated concrete production equipment, characterized by: The invention is used to complete the secondary processing of raw materials as claimed in claim 2, comprising a ball mill (1), wherein a filter screen (2) is provided in the ball mill (1), the filter screen (2) is attached to the inner wall of the ball mill (1), the filter screen (2) and the discharge port (3) of the ball mill (1) are in a separated state, the filter screen (2) is in a long strip shape and its length is equal to the length of the ball mill (1), the long side of the filter screen (2) is slidably provided on the inner wall of the ball mill (1), and the ball mill (1) is provided with a driving device (4) for driving the long side of the filter screen (2) to slide so as to separate the filter screen (2) from the inner wall and make the filter screen (2) suspended in the air; and a cover (5) is provided in the ball mill (1), and the cover (5) is used to cover the mesh of the filter screen (2) when the ball mill (1) grinds the material.

4. The autoclaved aerated concrete production equipment according to claim 3, characterized in that: The narrow side of the filter screen (2) is fixedly provided with a slide rail (6), the slide rail (6) is made of an elastic rod, and the initial position of the slide rail (6) is in contact with the inner wall of the ball mill (1). The driving device (4) includes sliders (41) arranged at both ends of the slide rail (6), the sliders (41) are slidably arranged on the inner wall of the ball mill (1), and the sliders (41) slide along the inner wall of the ball mill (1). The driving device (4) also includes an annular guide rail (42) arranged in the ball mill (1), the annular guide rail (42) is fixedly arranged on the inner wall of the ball mill (1), and the slider (41) is slidably arranged on the annular guide rail (42). The driving device (4) also includes a first driving member for driving the slider (41) to slide along the annular guide rail (42) or driving the sliders (41) at both ends to move toward each other to pull the filter screen (2) and the inner wall of the ball mill (1) apart.

5. The autoclaved aerated concrete production equipment according to claim 4, characterized in that: The first driving member includes a driving motor (43) arranged in the slider (41), the length direction of the output shaft of the driving motor (43) is parallel to the axial direction of the ball mill (1), and the first driving member also includes a gear (44) arranged on the driving motor (43) and a rack (45) arranged on the annular guide rail (42), the gear (44) and the rack (45) being meshed with each other, and when the driving motors (43) on both sides run in the same direction, the filter screen (2) is driven to move along the inner wall of the ball mill (1), and when the driving motors (43) on both sides run in opposite directions, the filter screen (2) is driven to move in a direction away from the inner wall of the ball mill (1).

6. The autoclaved aerated concrete production equipment according to claim 4, characterized in that: The covering member (5) comprises two mounting rods (51) arranged on the filter screen (2) and a wear-resistant cloth (52) arranged between the two mounting rods (51); one mounting rod (51) is fixedly arranged on the filter screen (2); the other mounting rod (51) is slidably arranged on the filter screen (2); the wear-resistant cloth (52) is folded; and the covering member (5) further comprises a second driving member for driving the mounting rod (51) to slide.

7. The autoclaved aerated concrete production equipment according to claim 6, characterized in that: The surfaces of the two mounting rods (51) facing each other are both provided with a receiving groove (7), and both ends of the wear-resistant cloth (52) are both provided on the inner wall of the receiving groove (7). When the wear-resistant cloth (52) is stored, the wear-resistant cloth (52) is folded and located in the receiving groove (7).

8. The autoclaved aerated concrete production equipment according to claim 6, characterized in that: The second driving member comprises a storage motor (53) arranged on the filter screen (2) and a traction rope (54) arranged on the output shaft of the storage motor (53); the length direction of the traction rope (54) is parallel to the length direction of the filter screen (2); and both ends of the mounting rod (51) are fixedly arranged on the traction rope (54).

9. The autoclaved aerated concrete production equipment according to claim 8, characterized in that: A protective box (8) is provided on the filter screen (2), and the storage motor (53) is provided in the protective box (8).

10. The autoclaved aerated concrete production equipment according to claim 8, characterized in that: A diagonal brace is provided on the side of the installation rod (51), and the other end of the diagonal brace is supported on the filter screen (2).

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