CN111635156A - Preparation method of 3D printing building material aggregate - Google Patents
Preparation method of 3D printing building material aggregate Download PDFInfo
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- CN111635156A CN111635156A CN202010510373.9A CN202010510373A CN111635156A CN 111635156 A CN111635156 A CN 111635156A CN 202010510373 A CN202010510373 A CN 202010510373A CN 111635156 A CN111635156 A CN 111635156A
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- preparation
- building material
- material aggregate
- printing building
- spherical particles
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/021—Agglomerated materials, e.g. artificial aggregates agglomerated by a mineral binder, e.g. cement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
Abstract
The invention discloses a preparation method of a 3D printing building material aggregate, which comprises the following steps: s1, introducing the materials, the adhesive and the auxiliary agent into a reaction kettle, adding water, and stirring; s2, preparing the mixture into a formable block after stirring; s3, preparing the blocky raw materials into spherical particles by using a pill making machine, and then polishing the spherical particles in the pill making machine; s4, polishing, drying to obtain spherical particles, and calcining the dried particles at high temperature for a certain time to obtain the finished aggregate.
Description
Technical Field
The invention relates to the technical field of 3D printing, in particular to a preparation method of a building material aggregate for 3D printing.
Background
3D printing (3DP), one of the rapid prototyping technologies, also known as additive manufacturing, is a technology for constructing an object by layer-by-layer printing using an adhesive material such as powdered metal or plastic based on a digital model file, and 3D printing is generally implemented by a digital technical material printer, and is commonly used to manufacture models in the fields of mold manufacturing, industrial design, and the like, and is then gradually used for direct manufacturing of some products, and there are already parts printed using this technology, which are applied in the fields of jewelry, footwear, industrial design, construction, engineering and construction (AEC), automobiles, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and others;
building 3D prints and is utilizing the basic principle of layering to pile up, adopts industrial robot to lay the new technique of free form building structure layer by layer repetition, and at present, 3D prints the relevant research of material of building and is immature yet, and china adopts at present that building waste material is, adds cement, fibre, adhesive after smashing it, grinding and uses, and the aggregate that intensity is high, density is little, and the particle appearance is close to the ball-type is the most suitable 3D and prints the concrete and use, but can't popularize and use.
Disclosure of Invention
The invention provides a preparation method of 3D printing building material aggregate, which can effectively solve the problems that related researches on materials for 3D printing buildings proposed in the background art are still immature, the existing Chinese adopted building waste materials are crushed, ground and then added with cement, fibers and adhesives for use, the aggregate with high strength, small density and spherical particle morphology is most suitable for 3D printing concrete, but cannot be popularized and used.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of a 3D printing building material aggregate comprises the following steps:
s1, introducing the materials, the adhesive and the auxiliary agent into a reaction kettle, adding water, and stirring;
s2, preparing the mixture into a formable block after stirring;
s3, preparing the blocky raw materials into spherical particles by using a pill making machine, and then polishing the spherical particles in the pill making machine;
and S4, polishing, drying to obtain spherical particles, and calcining the dried particles at high temperature for a certain time to obtain the finished aggregate.
According to the technical scheme, the raw material of the S1 comprises one or more of red mud, coal gangue, fly ash, blast furnace slag, sludge incineration waste residue, desulfurized gypsum, tailings, smelting slag and ceramic industrial waste; the usage amount is 50-95%.
According to the technical scheme, the binder in the S1 is one or more of water glass, alumina sol, zeolite powder, bentonite, diatomite and kaolin.
According to the technical scheme, the usage amount of the aluminum sol is 3-20 wt% of the mass of the red mud.
According to the technical scheme, the auxiliary agent in the S1 is one of glass fiber, glass powder and waste glass fiber filament.
According to the technical scheme, the water in the S1 is tap water or deionized water.
According to the technical scheme, the particle size range of the spherical particles in the S4 is 2-20 mm.
According to the above technical solution, the block after the molding in S2 is a block that can be directly taken out.
According to the technical scheme, the calcination temperature range in the drying in the step S4 is 900-1300 ℃, and the calcination time is 300-1800S.
Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use, provides a method for preparing 3D printing material aggregate by using industrial solid waste, can solve the problems of large-scale, high-value and resource treatment of the industrial solid waste, realizes the effective utilization of the solid waste, provides a new choice for the 3D printing building material aggregate, widens the selection range of the 3D printing building material aggregate, takes fly ash, red mud, blast furnace slag, coal gangue, sludge incineration waste residue, desulfurization gypsum, tailings, smelting slag and ceramic industrial waste as main materials, takes water glass, organic binder, bentonite, diatomite, alumina sol and kaolin as binder, takes glass fiber, glass powder and glass fiber waste silk as auxiliary agents, provides a new choice for the 3D printing building material, and recycles the solid waste, the solid waste is subjected to large-scale, high-valued and recycling treatment, secondary pollution to the environment is avoided through treatment means such as sintering and curing, the method is a harmless treatment means, the materials are obtained locally at last, the cost is low, and the method is suitable for popularization and use.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of the preparation process of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1, the invention provides a technical scheme, and a preparation method of a 3D printing building material aggregate comprises the following steps:
s1, introducing the materials, the adhesive and the auxiliary agent into a reaction kettle, adding water, and stirring;
s2, preparing the mixture into a formable block after stirring;
s3, preparing the blocky raw materials into spherical particles by using a pill making machine, and then polishing the spherical particles in the pill making machine;
and S4, polishing, drying to obtain spherical particles, and calcining the dried particles at high temperature for a certain time to obtain the finished aggregate.
According to the technical scheme, the raw materials of S1 include red mud, coal gangue, fly ash, blast furnace slag, sludge incineration waste residue, desulfurized gypsum, tailings, smelting slag and ceramic industrial waste; the usage amount is 85%.
According to the technical scheme, the binder in the S1 is water glass, bentonite and kaolin, wherein the addition ratio of the bentonite is 4%, the addition ratio of the water glass is 5%, and the addition ratio of the kaolin is 3%.
According to the technical scheme, the usage amount of the aluminum sol is 12 wt% of the mass of the red mud, the preferable proportion is 5%, and the solid content of the aluminum sol is 20%.
According to the technical scheme, the glass fiber is used as the auxiliary agent in the S1, and the adding proportion is 10 percent
According to the technical scheme, the water in the S1 is tap water or deionized water.
According to the technical scheme, the particle size range of the spherical particles in the S4 is 3 mm.
According to the above technical means, the block after molding in S2 is a block that can be taken directly.
According to the technical scheme, the calcining temperature range in the drying process in the S4 is 1050 ℃, and the calcining time is 900S.
Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use, takes fly ash, red mud, blast furnace slag, coal gangue, sludge incineration waste residue, desulfurized gypsum, tailings, smelting slag and ceramic industrial waste as main materials, water glass, organic binder, bentonite, diatomite, alumina sol and kaolin as adhesives, glass fiber, glass powder and glass fiber waste silk as auxiliary agents, provides a new preparation scheme of the 3D printing building material aggregate, provides a new choice for the 3D printing building material, recycles the solid waste, realizes the scale, high-valued and resource treatment of the solid waste, avoids the secondary pollution of the solid waste to the environment through the treatment means of sintering, curing and the like, is a harmless treatment means, finally obtains materials on site, low cost and is suitable for popularization and application.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A preparation method of a 3D printing building material aggregate is characterized by comprising the following steps: the method comprises the following steps:
s1, introducing the materials, the adhesive and the auxiliary agent into a reaction kettle, adding water, and stirring;
s2, preparing the mixture into a formable block after stirring;
s3, preparing the blocky raw materials into spherical particles by using a pill making machine, and then polishing the spherical particles in the pill making machine;
and S4, polishing, drying to obtain spherical particles, and calcining the dried particles at high temperature for a certain time to obtain the finished aggregate.
2. The preparation method of the 3D printing building material aggregate according to claim 1, wherein the material raw materials in S1 comprise one or more of red mud, coal gangue, fly ash, blast furnace slag, sludge incineration waste residue, desulfurized gypsum, tailings, smelting slag and ceramic industrial waste; the usage amount is 50-95%.
3. The preparation method of the 3D printing building material aggregate according to claim 1, wherein the binder in S1 is one or more of water glass, alumina sol, zeolite powder, bentonite, diatomite and kaolin.
4. The preparation method of the 3D printing building material aggregate according to claim 3, wherein the usage amount of the aluminum sol is 3 wt% -20 wt% of the mass of the red mud.
5. The preparation method of the 3D printing building material aggregate according to claim 1, wherein the auxiliary agent in S1 is one of glass fiber, glass powder and waste glass fiber filament.
6. The preparation method of the 3D printing building material aggregate according to claim 1, wherein the water in the S1 is tap water or deionized water.
7. The preparation method of the 3D printing building material aggregate according to claim 1, wherein the size of the spherical particles in S4 is in the range of 2-20 mm.
8. The preparation method of the 3D printing building material aggregate according to claim 1, wherein the block after the forming in the S2 is a directly accessible block.
9. The preparation method of the 3D printing building material aggregate as recited in claim 1, wherein the calcination temperature in the drying in S4 is in the range of 900-1300 ℃, and the calcination time is in the range of 300-1800S.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479676A (en) * | 2020-12-18 | 2021-03-12 | 湖北工业大学 | Cementing material for 3D printing and preparation method thereof |
| CN113292292A (en) * | 2021-06-04 | 2021-08-24 | 北京三帝科技股份有限公司 | Composite wave-absorbing material based on 3D printing and application thereof |
| CN114749673A (en) * | 2022-03-29 | 2022-07-15 | 中国航发北京航空材料研究院 | Method for preparing powder by recycling high-temperature alloy coarse powder return material |
| CN115819020A (en) * | 2022-11-25 | 2023-03-21 | 宁波新胜中压电器有限公司 | Light high-strength concrete for prefabricating power grid and preparation process thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479676A (en) * | 2020-12-18 | 2021-03-12 | 湖北工业大学 | Cementing material for 3D printing and preparation method thereof |
| CN113292292A (en) * | 2021-06-04 | 2021-08-24 | 北京三帝科技股份有限公司 | Composite wave-absorbing material based on 3D printing and application thereof |
| CN114749673A (en) * | 2022-03-29 | 2022-07-15 | 中国航发北京航空材料研究院 | Method for preparing powder by recycling high-temperature alloy coarse powder return material |
| CN115819020A (en) * | 2022-11-25 | 2023-03-21 | 宁波新胜中压电器有限公司 | Light high-strength concrete for prefabricating power grid and preparation process thereof |
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| CN111635156B (en) | 2022-06-10 |
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Denomination of invention: A Preparation Method for 3D Printing of Building Material Aggregates Effective date of registration: 20230918 Granted publication date: 20220610 Pledgee: Shanghai Rural Commercial Bank Co.,Ltd. Shanghai pilot Free Trade Zone Lingang xinpian District sub branch Pledgor: SHANGHAI GUOHUI ENVIRONMENTAL PROTECTION TECHNOLOGY GROUP Co.,Ltd. Registration number: Y2023310000558 |
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