CN110936471B - Clay waste sand baked brick recycling and forming process - Google Patents
Clay waste sand baked brick recycling and forming process Download PDFInfo
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- CN110936471B CN110936471B CN201911244490.9A CN201911244490A CN110936471B CN 110936471 B CN110936471 B CN 110936471B CN 201911244490 A CN201911244490 A CN 201911244490A CN 110936471 B CN110936471 B CN 110936471B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/12—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein one or more rollers exert pressure on the material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C3/00—Apparatus or methods for mixing clay with other substances
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Abstract
The invention discloses a clay waste sand baked brick recycling and forming process, which comprises the following steps: selecting a mould component; preparing a material; making a first portion of a clay mixture; making a second clay mixture: 1/10 clay is added with 0.6 to 0.8 portion of solid resin; filling a mold; pressing; disassembling the first die frame III, rolling and compacting the first die frame II by the extrusion roller from left to right, disassembling the first die frame II, rolling and compacting the first die frame I by the extrusion roller from right to left, overturning, and repeating the operations; demolding and smoldering. The manufacturing process of twice die filling and twice compacting is adopted, so that the mixture of clay and waste sand is positioned inside the brick, and the mixture of clay and solid resin is positioned on the upper surface and the lower surface of the brick, the smoothness of the surface of the brick and the integral strength of the brick are improved, bubbles inside the brick are reduced, and the compactness is improved.
Description
Technical Field
The invention relates to the technical field of recycling of waste clay sand, in particular to a recycling and forming process of baked bricks made of waste clay sand.
Background
The clay brick is made up by using clay (including shale and coal gangue powder) as main raw material through the processes of clay treatment, forming, drying and roasting. Square and long bricks are created in succession in the spring, autumn and warring countries in China, and the technology, production scale, quality and fancy varieties of brick making in the Qin and Han dynasties are remarkably developed, and the brick is named as 'Qin brick Han tile' in the world. The common brick has the size of 240 mm, 115 mm and 53 mm, and the clay brick is made of local materials, has low price, is durable, has the advantages of fire resistance, heat insulation, sound insulation, moisture absorption and the like, and is widely used in civil and architectural engineering. The waste broken bricks can also be used as concrete aggregates. In order to improve the defects of small size, heavy weight and much soil consumption of common clay bricks, the light weight, high strength, hollow and massive clay bricks are developed. The lime-sand brick is made up by using lime and quartz sand, sand or fine sandstone according to a proper proportion through the processes of grinding, adding water, mixing, press-forming by using semidry method and steam-pressing and curing. The flyash brick is made up by using flyash as main raw material, adding gangue powder or cementing material of clay, etc. and making them pass through the processes of proportioning, forming, drying and roasting, and can fully utilize industrial waste slag and save fuel, in which the waste sand doped in clay can be used to make brick blank, so that it not only can raise the strength of brick block, but also can save clay material, and can reuse waste sand and save resource.
Disclosure of Invention
The invention aims to solve the problems, and provides a clay waste sand baked brick recycling and forming process, which adopts a manufacturing process of twice die filling and twice compacting to enable a mixture of clay and waste sand to be positioned inside a brick, and the mixture of clay and solid resin to be positioned on the upper surface and the lower surface of the brick, so that the smoothness of the surface of the brick and the strength of the whole brick are improved, air bubbles inside the brick are reduced, and the compactness is improved, thereby solving the problems in the background art.
To this end, according to one aspect of the invention: a clay waste sand baked brick recycling molding process comprises the following steps:
step S1: selecting a mould component; the die assembly comprises a first die frame, two second die frames and two third die frames, wherein the height of the first die frame is 15-20 cm, the height of the second die frame is 1-5 cm, and the height of the third die frame is 0.1-0.6 cm;
step S2: preparing a material; 60-80 parts of clay, 6-8 parts of waste sand and 0.6-0.8 part of solid resin;
step S3: making a first portion of a clay mixture; selecting 9/10 clay, adding 6-8 parts of waste sand, uniformly mixing the clay and the waste sand, adding 7-10% of water after mixing, and clockwise stirring by using a vertical stirrer until the surface of the clay is in a rough surface shape;
step S4: making a second portion of the clay mixture; adding 0.6-0.8 part of solid resin into the residual 1/10 clay, then adding 8.5-10.5% of water at the temperature of 10-25 ℃, and stirring clockwise by using a vertical stirrer until the surface of the clay is in a rough surface shape;
step S5: filling a mold; sequentially aligning and stacking a second mold frame, a first mold frame and another second mold frame, filling a first clay mixture into the first mold frame and the second mold frame, placing a third mold frame at the upper end of the second mold frame, filling a second clay mixture into the third mold frame, turning over, placing another third mold frame, and filling the second clay mixture again;
step S6: pressing; disassembling the first die frame III, rolling and compacting the first die frame II by the extrusion roller from left to right, disassembling the first die frame II, rolling and compacting the first die frame I by the extrusion roller from right to left, overturning, and repeating the operations;
step S7: demolding; disassembling the first die frame and demoulding to form a green brick;
step S8: smoldering; and placing the green bricks in a brick kiln to insulate air, and firing for 24 hours at a high temperature of 800-1400 ℃.
Further, the clay in step S2 is subjected to high-temperature cooking, drying, crushing and screening in advance to take powder particles having a diameter of less than 800 μm.
Further, the waste sand in step S2 is washed, dried and screened beforehand to take particles with a diameter of less than 2 mm.
Further, the solid resin in step S2 is previously crushed into powder particles of 325 to 500 μm.
Further, step S5 requires that the first form, the second form, and the third form be completely immersed in the clay powder before filling until the clay powder is uniformly adhered to the inner walls of the first form, the second form, and the third form.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts the manufacturing process of twice die filling and twice compacting, so that the mixture of clay and waste sand is positioned inside the brick, the mixture of clay and solid resin is positioned on the upper surface and the lower surface of the brick, the two mixtures are simultaneously pressed, the clay is mutually bonded, the smoothness of the surface of the brick and the strength of the whole brick are improved on the premise of no brick layering, air bubbles inside the brick are reduced, and the compactness is improved.
Drawings
FIG. 1 is a flow chart of the clay waste sand brick-fired recycling molding process of the present invention;
fig. 2 is a schematic view of stacking mold frame assemblies of the present invention.
In the figure: 1. a first mould frame; 2. a second mold frame; 3. and a third mold frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1-2, a clay waste sand brick-fired recycling molding process comprises the following steps:
step S1: selecting a mould component; the die assembly comprises a first die frame 1, two second die frames 2 and two third die frames 3, wherein the height of the first die frame 1 is 18cm, the height of the second die frame 2 is 1.5cm, and the height of the third die frame 3 is 0.1 cm;
step S2: preparing a material; 60 parts of clay, 6 parts of waste sand and 0.6 part of solid resin, wherein the clay is subjected to high-temperature cooking, drying, crushing and screening in advance to obtain powder particles with the diameter of less than 800 micrometers, the waste sand is subjected to cleaning, drying and screening in advance to obtain particles with the diameter of less than 2mm, and the solid resin is crushed into powder particles with the diameter of 325-500 micrometers in advance;
step S3: making a first portion of a clay mixture; selecting 9/10 clay, adding 6 parts of waste sand, uniformly mixing the clay and the waste sand, adding 7.5% of water after mixing, and clockwise stirring by using a vertical stirrer until the surface of the clay is in a rough surface shape;
step S4: making a second portion of the clay mixture; adding 0.6 part of solid resin into the residual 1/10 clay, then adding 8.5 percent of water with the temperature of 25 ℃, and stirring clockwise by a vertical stirrer until the surface of the clay is in a rough surface shape;
step S5: filling a mold; sequentially aligning and stacking a second mold frame 2, a first mold frame 1 and another second mold frame 2, filling a first clay mixture into the first mold frame 1 and the second mold frame 2, placing a third mold frame 3 at the upper end of the second mold frame 2, filling a second clay mixture into the third mold frame 3, turning over, placing another third mold frame 3, filling the second clay mixture again, and completely immersing the first mold frame 1, the second mold frame 2 and the third mold frame 3 into clay powder before mold filling until the clay powder is uniformly adhered to the inner walls of the first mold frame 1, the second mold frame 2 and the third mold frame 3, so that a brick blank cannot be adhered to the inner walls of the first mold frame 1, the second mold frame 2 and the third mold frame 3, and later demolding is facilitated;
step S6: pressing; the first third die frame 3 is disassembled, the extrusion roller rolls and compacts on the second die frame 2 from left to right, the first second die frame 2 is disassembled, the extrusion roller rolls and compacts on the first die frame 1 from right to left, the operation is repeated, the extrusion roller rolls and compacts from the upper end of the die frame, compared with a hydraulic device, the vertical extrusion is quicker, the batch production can be realized, the clay on the extrusion surface layer can be extruded in a staggered way through two times of extrusion in different directions, the compactness is improved, and the overall strength of the brick is enhanced;
step S7: demolding; disassembling the first die frame 1 and demoulding to form a green brick;
step S8: smoldering; the green bricks are placed in a brick kiln to insulate air, and are fired at the high temperature of 1000 ℃ for 24 hours, the powder granular solid resin is melted in the smoldering process, the clay is bonded, the bubbles are filled, and the smoothness and the compactness of the convenient surfaces of the bricks are improved.
Example 2
As shown in fig. 1-2, a clay waste sand brick-fired recycling molding process comprises the following steps:
step S1: selecting a mould component; the die assembly comprises a first die frame 1, two second die frames 2 and two third die frames 3, wherein the height of the first die frame 1 is 18cm, the height of the second die frame 2 is 1.5cm, and the height of the third die frame 3 is 0.1 cm;
step S2: preparing a material; 60 parts of clay, 6 parts of waste sand and 0.6 part of solid resin, wherein the clay is subjected to high-temperature cooking, drying, crushing and screening in advance to obtain powder particles with the diameter of less than 800 micrometers, the waste sand is subjected to cleaning, drying and screening in advance to obtain particles with the diameter of less than 2mm, and the solid resin is crushed into powder particles with the diameter of 325-500 micrometers in advance;
step S3: making a first portion of a clay mixture; selecting 9/10 clay, adding 6 parts of waste sand, uniformly mixing the clay and the waste sand, adding 7.5% of water after mixing, and clockwise stirring by using a vertical stirrer until the surface of the clay is in a rough surface shape;
step S4: making a second portion of the clay mixture; adding 0.6 part of solid resin into the residual 1/10 clay, then adding 8.5 percent of water with the temperature of 25 ℃, and stirring clockwise by a vertical stirrer until the surface of the clay is in a rough surface shape;
step S5: filling a mold; sequentially aligning and stacking a second mold frame 2, a first mold frame 1 and another second mold frame 2, filling a first clay mixture into the first mold frame 1 and the second mold frame 2, placing a third mold frame 3 at the upper end of the second mold frame 2, filling a second clay mixture into the third mold frame 3, turning over, placing another third mold frame 3, filling the second clay mixture again, and completely immersing the first mold frame 1, the second mold frame 2 and the third mold frame 3 into clay powder before mold filling until the clay powder is uniformly adhered to the inner walls of the first mold frame 1, the second mold frame 2 and the third mold frame 3, so that a brick blank cannot be adhered to the inner walls of the first mold frame 1, the second mold frame 2 and the third mold frame 3, and later demolding is facilitated;
step S6: pressing; the first third die frame 3 is disassembled, the extrusion roller rolls and compacts on the second die frame 2 from left to right, the first second die frame 2 is disassembled, the extrusion roller rolls and compacts on the first die frame 1 from right to left, the operation is repeated, the extrusion roller rolls and compacts from the upper end of the die frame, compared with a hydraulic device, the vertical extrusion is quicker, the batch production can be realized, the clay on the extrusion surface layer can be extruded in a staggered way through two times of extrusion in different directions, the compactness is improved, and the overall strength of the brick is enhanced;
step S7: demolding; disassembling the first die frame 1 and demoulding to form a green brick;
step S8: smoldering; the green bricks are placed in a brick kiln to insulate air, and are fired at the high temperature of 1000 ℃ for 24 hours, the powder granular solid resin is melted in the smoldering process, the clay is bonded, the bubbles are filled, and the smoothness and the compactness of the convenient surfaces of the bricks are improved.
Example 3
As shown in fig. 1-2, a clay waste sand brick-fired recycling molding process comprises the following steps:
step S1: selecting a mould component; the die assembly comprises a first die frame 1, two second die frames 2 and two third die frames 3, wherein the height of the first die frame 1 is 18cm, the height of the second die frame 2 is 1.5cm, and the height of the third die frame 3 is 0.1 cm;
step S2: preparing a material; 60 parts of clay, 6 parts of waste sand and 0.6 part of solid resin, wherein the clay is subjected to high-temperature cooking, drying, crushing and screening in advance to obtain powder particles with the diameter of less than 800 micrometers, the waste sand is subjected to cleaning, drying and screening in advance to obtain particles with the diameter of less than 2mm, and the solid resin is crushed into powder particles with the diameter of 325-500 micrometers in advance;
step S3: making a first portion of a clay mixture; selecting 9/10 clay, adding 6 parts of waste sand, uniformly mixing the clay and the waste sand, adding 7.5% of water after mixing, and clockwise stirring by using a vertical stirrer until the surface of the clay is in a rough surface shape;
step S4: making a second portion of the clay mixture; adding 0.6 part of solid resin into the residual 1/10 clay, then adding 8.5 percent of water with the temperature of 25 ℃, and stirring clockwise by a vertical stirrer until the surface of the clay is in a rough surface shape;
step S5: filling a mold; sequentially aligning and stacking a second mold frame 2, a first mold frame 1 and another second mold frame 2, filling a first clay mixture into the first mold frame 1 and the second mold frame 2, placing a third mold frame 3 at the upper end of the second mold frame 2, filling a second clay mixture into the third mold frame 3, turning over, placing another third mold frame 3, filling the second clay mixture again, and completely immersing the first mold frame 1, the second mold frame 2 and the third mold frame 3 into clay powder before mold filling until the clay powder is uniformly adhered to the inner walls of the first mold frame 1, the second mold frame 2 and the third mold frame 3, so that a brick blank cannot be adhered to the inner walls of the first mold frame 1, the second mold frame 2 and the third mold frame 3, and later demolding is facilitated;
step S6: pressing; the first third die frame 3 is disassembled, the extrusion roller rolls and compacts on the second die frame 2 from left to right, the first second die frame 2 is disassembled, the extrusion roller rolls and compacts on the first die frame 1 from right to left, the operation is repeated, the extrusion roller rolls and compacts from the upper end of the die frame, compared with a hydraulic device, the vertical extrusion is quicker, the batch production can be realized, the clay on the extrusion surface layer can be extruded in a staggered way through two times of extrusion in different directions, the compactness is improved, and the overall strength of the brick is enhanced;
step S7: demolding; disassembling the first die frame 1 and demoulding to form a green brick;
step S8: smoldering; the green bricks are placed in a brick kiln to insulate air, and are fired at the high temperature of 1000 ℃ for 24 hours, the powder granular solid resin is melted in the smoldering process, the clay is bonded, the bubbles are filled, and the smoothness and the compactness of the convenient surfaces of the bricks are improved.
The difference between the first, second and third examples is that the solid resin is added in an amount of 0.1, 0.3 and 0.6 parts, ten samples of the 1000 bricks obtained in the first, second and third examples are measured for strength as specified by YB/T5106-93, and then averaged to visually measure the surface smoothness.
Table 110 statistical table for lining size of sample wafer
As can be seen from the table 1 above, the brick samples prepared in the first embodiment, the second embodiment and the third embodiment have smooth and burr-free surfaces and strength grade of 14-15 MPa, so that the surface smoothness and the overall strength of the brick are improved.
The invention adopts the manufacturing process of twice die filling and twice compacting, so that the mixture of clay and waste sand is positioned inside the brick, the mixture of clay and solid resin is positioned on the upper surface and the lower surface of the brick, the two mixtures are simultaneously pressed, the clay is mutually bonded, the smoothness of the surface of the brick and the strength of the whole brick are improved on the premise of no brick layering, air bubbles inside the brick are reduced, and the compactness is improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (5)
1. A clay waste sand baked brick recycling molding process is characterized by comprising the following steps:
step S1: selecting a mould component; the die assembly comprises a first die frame (1), two second die frames (2) and two third die frames (3), wherein the height of the first die frame (1) is 15-20 cm, the height of the second die frame (2) is 1-5 cm, and the height of the third die frame (3) is 0.1-0.6 cm;
step S2: preparing a material; 60-80 parts of clay, 6-8 parts of waste sand and 0.6-0.8 part of solid resin;
step S3: making a first portion of a clay mixture; selecting 9/10 clay, adding 6-8 parts of waste sand, uniformly mixing the clay and the waste sand, adding 7-10% of water after mixing, and clockwise stirring by using a vertical stirrer until the surface of the clay is in a rough surface shape;
step S4: making a second portion of the clay mixture; adding 0.6-0.8 part of solid resin into the residual 1/10 clay, then adding 8.5-10.5% of water at the temperature of 10-25 ℃, and stirring clockwise by using a vertical stirrer until the surface of the clay is in a rough surface shape;
step S5: filling a mold; sequentially aligning and stacking a second mold frame (2), a first mold frame (1) and another second mold frame (2), filling a first clay mixture into the first mold frame (1) and the second mold frame (2), placing a third mold frame (3) at the upper end of the second mold frame (2), filling a second clay mixture into the third mold frame (3), turning over, placing another third mold frame (3) and filling the second clay mixture again;
step S6: pressing; disassembling the first die frame No. 3, rolling and compacting the first die frame No. 2 by the extrusion roller from left to right, disassembling the first die frame No. 2, rolling and compacting the first die frame No. 1 by the extrusion roller from right to left, overturning and repeating the operation;
step S7: demolding; disassembling the first die frame (1) and demoulding to form a green brick;
step S8: smoldering; and placing the green bricks in a brick kiln to insulate air, and firing for 24 hours at a high temperature of 800-1400 ℃.
2. The process of claim 1, wherein the clay used in step S2 is subjected to high temperature steaming, drying, crushing and screening to obtain powder particles with diameter less than 800 μm.
3. The clay waste sand clinker brick reuse molding process according to claim 1, wherein the waste sand in step S2 is washed, dried and screened in advance to take particles with a diameter of less than 2 mm.
4. The process of claim 1, wherein the solid resin in step S2 is crushed into 325 to 500 μm powder particles.
5. The clay waste sand clinker brick recycling molding process according to claim 1, wherein step S5 is to immerse the first mold frame (1), the second mold frame (2) and the third mold frame (3) in clay powder before mold filling until the clay powder is uniformly adhered to the inner walls of the first mold frame (1), the second mold frame (2) and the third mold frame (3).
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| CN203293351U (en) * | 2013-06-14 | 2013-11-20 | 王庆起 | Combined die |
| US9597818B2 (en) * | 2014-08-04 | 2017-03-21 | King Abdulaziz City For Science And Technology | Geopolymer brick fabrication system |
| CN204278186U (en) * | 2014-11-30 | 2015-04-22 | 重庆健杰科技有限公司 | Hollow-green brick pressing equipment |
| CN106116616A (en) * | 2016-06-24 | 2016-11-16 | 黄瑞卿 | Antistatic tile preparation method |
| KR101937700B1 (en) * | 2018-06-01 | 2019-01-14 | 주식회사 현대씨엠 | Improved Clay bricks |
| CN108863205A (en) * | 2018-07-15 | 2018-11-23 | 董春年 | A kind of heat preservation brick and preparation method thereof |
| CN108726990A (en) * | 2018-07-19 | 2018-11-02 | 董春年 | A kind of exterior wall tile and preparation method thereof of imitative stone material |
| CN110510995A (en) * | 2019-09-10 | 2019-11-29 | 阜新市百通墙体建材材料有限公司 | It is a kind of to utilize gangue, coal slime roasting preparation process ornament and method |
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