CN115448682A - Phosphogypsum fireproof door core material and preparation method thereof - Google Patents

Phosphogypsum fireproof door core material and preparation method thereof Download PDF

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CN115448682A
CN115448682A CN202210990342.7A CN202210990342A CN115448682A CN 115448682 A CN115448682 A CN 115448682A CN 202210990342 A CN202210990342 A CN 202210990342A CN 115448682 A CN115448682 A CN 115448682A
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gypsum
slurry
foaming
core material
door core
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胡华震
黄明亮
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Zhejiang Huize Technology Development Co ltd
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • C04B28/16Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing anhydrite, e.g. Keene's cement
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B22/00Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
    • C04B22/08Acids or salts thereof
    • C04B22/14Acids or salts thereof containing sulfur in the anion, e.g. sulfides
    • C04B22/142Sulfates
    • C04B22/143Calcium-sulfate
    • C04B22/144Phosphogypsum
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/20Resistance against chemical, physical or biological attack
    • C04B2111/28Fire resistance, i.e. materials resistant to accidental fires or high temperatures
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20Mortars, concrete or artificial stone characterised by specific physical values for the density
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention belongs to the technical field of building materials, and particularly relates to a fireproof door core material and a preparation method thereof, wherein the phosphogypsum fireproof door core material comprises the following components in parts by weight: 95-99% of gypsum mixture consisting of phosphorus building gypsum, high-strength gypsum, mixed gypsum and II type anhydrous gypsum, 1-5% of excitant, 0.03-0.05% of water reducing agent, 0.03-0.1% of organic silicon oil, 0.03-0.06% of reinforcing agent, 0.005-0.01% of PP fiber and 0.0003-0.0006% of foaming agent.

Description

Ardealite fireproof door core material and preparation method thereof
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a fireproof door core material and a preparation method thereof.
Background
The main raw material of the present fireproof door core board is light-burned magnesium powder, and the production process is that magnesite is calcined at 1800 ℃, carbon dioxide completely escapes, and a periclase compact block is formed, and the fireproof door core board has high refractoriness. The main component of the magnesium oxide is magnesium oxide, and the finished product is prepared by flotation purification, light burning, fine grinding of a grinding mill, high-pressure ball pressing and calcination in an ultrahigh-temperature oil shaft kiln. However, as the requirement for discharging solid waste is more strict, the mining and processing of natural super magnesite ore are greatly limited due to the huge pollution to the environment.
The prior art is disclosed in patent No. CN 201911287690.2: "a method for preparing core plate of fire door", dissolve the crystal of magnesium sulfate into concentration of 26-30 μ M with water, get the magnesium sulfate solution; selecting the following raw materials in parts by weight: 100-160 parts of magnesium oxide, 150-200 parts of magnesium sulfate solution, 1.5-3 parts of modifier, 1-2 parts of reinforcing agent and 1-2 parts of polypropylene fiber; uniformly stirring the selected raw materials to obtain raw slurry; selecting 1-2 parts of foaming agent, and mixing the raw materials in a proportion of 1: adding water in a ratio of 40 for foaming treatment, and adding the foamed mixture into the raw pulp to obtain door core plate pulp; and pouring the obtained door core plate slurry into a forming mold, curing for 1 day to obtain the fireproof door core material, aging for 15 days, and leaving the factory after the strength is improved. However, the maintenance period of the demoulded product of the plate is long, the production efficiency is low, the environmental pollution caused by the magnesium sulfate aqueous solution and the brine is serious, and the processing difficulty of cutting waste is high.
The research team of the company finds that a large amount of phosphogypsum generated in the production process of phosphate fertilizer production enterprises as indispensable products of agricultural fertilizers is a difficult problem which troubles each enterprise due to comprehensive utilization and disposal of the phosphogypsum, and gypsum is a natural A1-grade fireproof material.
Disclosure of Invention
The invention aims to provide a fireproof door core material and a preparation method thereof, and aims to solve the problems of high production cost, long demolding maintenance period, low production efficiency, high processing difficulty of cutting waste, serious environmental pollution and the like of the existing fireproof door core filling material.
In order to achieve the purpose, the invention adopts the following technical scheme:
in one aspect, the present invention provides a fire door core material of phosphogypsum, comprising: 95-99% of gypsum mixture consisting of phosphorus building gypsum, high-strength gypsum, mixed gypsum and II type anhydrous gypsum, 1-5% of excitant, 0.03-0.05% of water reducing agent, 0.03-0.1% of organic silicon oil, 0.03-0.06% of reinforcing agent, 0.005-0.01% of PP fiber and 0.0003-0.0006% of foaming agent.
The foaming agent is prepared from the following raw materials in percentage by weight of 1: mixing water at a ratio of 300-500.
The foaming agent is a mixture of basf 3110 and basf 812, wherein the percentage of basf 3110 and basf 812 is 60% -80%:40 to 20 percent.
On the other hand, the invention provides a preparation method of the ardealite fireproof door core material, which comprises the following steps of:
step S1: weighing the mixed foaming agent, adding 300-500 times of clear water for dilution to prepare foaming liquid, and uniformly mixing;
step S2: selecting a gypsum mixture consisting of phosphorus building gypsum, high-strength gypsum, mixed item gypsum and II type anhydrous gypsum, detecting the standard thickening water consumption of the gypsum mixture, and mixing and stirring the gypsum mixture and clear water for 2 minutes by a stirrer;
and step S3: sequentially adding 1-5% of excitant, 0.03-0.05% of water reducing agent, 0.03-0.1% of organic silicone oil, 0.03-0.06% of reinforcing agent and 0.005-0.01% of PP fiber into a stirrer to be uniformly stirred with the slurry to obtain slurry;
and step S4: starting a foaming machine, and beating the foaming liquid into foam through the foaming machine; adding the foam into a stirrer, and uniformly stirring to obtain mixed slurry; weighing 1000ml of the mixed slurry by using a measuring cup, and controlling the diffusivity of the mixed slurry between 360 and 370 to obtain foamed slurry;
step S5: sending the prepared foaming slurry into a forming die for forming, placing 1 part of three-dimensional gridding cloth into the forming die before pouring, and attaching a silica gel sleeve on the surface of a steel plate of the forming die;
step S6: and demolding after the slurry is finally set, drying and maintaining for 6h or naturally drying for 7 days, and then leaving the factory.
The invention has the beneficial effects that:
1. the building phosphogypsum material is adopted as a base material, so that the problem of waste material environmental protection of phosphate fertilizer production enterprises is solved, the production cost is reduced, and the comprehensive utilization of industrial waste residues can be realized.
2. Solves the defects of the fireproof door of the phosphorus building gypsum after foaming, such as high compressive strength, waterproof performance, tensile strength, heat preservation and insulation, volume weight, fire resistance, environmental protection and energy saving requirements.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 shows a material of the present invention at a magnification of 400 times under a microscope;
FIG. 2 shows a material of the present invention at a microscope magnification of 200;
FIG. 3 shows a material of the present invention under a microscope at 200 magnification;
FIG. 4 is a first diagram illustrating the practical effects of the material of the present invention;
FIG. 5 is a second diagram illustrating the practical effects of the material of the present invention;
FIG. 6 is a third diagram illustrating the practical effects of the material of the present invention;
FIG. 7 shows a pressure test apparatus for the material of the present invention;
figure 8 shows a dry test set-up for the material of the invention.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example one
There is provided a phosphogypsum fire door core material comprising: 95-99% of gypsum mixture consisting of phosphorus building gypsum, high-strength gypsum, mixed gypsum and II type anhydrous gypsum, 1-5% of excitant, 0.03-0.05% of water reducing agent, 0.03-0.1% of organic silicon oil, 0.03-0.06% of reinforcing agent, 0.005-0.01% of PP fiber and 0.0003-0.0006% of foaming agent.
The foaming agent is prepared from the following raw materials in percentage by weight of 1: mixing water at a ratio of 300-500.
The foaming agent is a mixture of basf 3110 and basf 812, wherein the percentage of basf 3110 and basf 812 is 60% -80%:40 to 20 percent.
The fireproof door core material uses a gypsum mixture with the content of more than 95%, and is matched with an exciting agent, a water reducing agent, organic silicon oil, a reinforcing agent and PP fibers, and the material product is obtained through foaming of a foaming agent.
Example two
The preparation method of the ardealite fireproof door core material comprises the following steps:
step S1: weighing and mixing the foaming agent, adding 300-500 times of clear water to dilute and prepare foaming liquid, and uniformly mixing;
step S2: selecting a gypsum mixture consisting of phosphorus building gypsum, high-strength gypsum, mixed item gypsum and II type anhydrous gypsum, detecting the standard thickening water consumption of the gypsum mixture, and mixing and stirring the gypsum mixture and clean water for 2 minutes by a stirrer;
and step S3: sequentially adding 1-5% of excitant, 0.03-0.05% of water reducer, 0.03-0.1% of organic silicone oil, 0.03-0.06% of reinforcing agent and 0.005-0.01% of PP fiber into a stirrer to be uniformly stirred with the slurry to obtain slurry;
and step S4: starting a foaming machine, and beating the foaming liquid into foam through the foaming machine; adding the foam into a stirrer, and uniformly stirring to obtain mixed slurry; weighing 1000ml of the mixed slurry by using a measuring cup, and controlling the diffusivity of the mixed slurry between 360 and 370 to obtain foamed slurry;
step S5: sending the prepared foaming slurry into a forming die for forming, placing 1 part of three-dimensional gridding cloth into the forming die before pouring, and attaching a silica gel sleeve on the surface of a steel plate of the forming die;
step S6: and demolding after the slurry is finally set, drying and maintaining for 6h or naturally drying for 7 days, and then leaving the factory.
EXAMPLE III
Referring to the attached drawings 1-8, fig. 1 is an effect diagram of the produced phosphogypsum fireproof door core material magnified 400 times under a microscope, fig. 2-3 are effect diagrams of the phosphogypsum fireproof door core material magnified 200 times under the microscope, fig. 4-6 are actual diagrams of each surface of a product finished product produced by the material, fig. 7 is finished product pressure testing equipment of the embodiment, and fig. 8 is drying equipment used in the embodiment.
Selecting 4 pieces of materials with the specification: the method comprises the steps of cutting 4 samples with the length of 50cm, the width of 50cm and the height of 9cm, and drying the cut samples, wherein the specification, the weight, the volume, the temperature, the time and the pressure of the dried samples are shown in the table 1.
TABLE 1
Figure BDA0003803663750000061
Further, a finished product is obtained through a drying test, the finished product after the drying test is subjected to surface density detection, compressive strength, dry shrinkage rate, drawing force, compressive strength and combustion temperature resistance detection, and all detection indexes are shown in table 2;
TABLE 2
Figure BDA0003803663750000062
The test data obtained by the embodiment shows that the phosphogypsum fireproof material completely meets the existing requirements in the aspects of compressive strength, waterproof performance, tensile strength, heat preservation and insulation, volume weight, fire prevention, environmental protection and energy conservation after foaming, has higher surface density and compressive strength, can perfectly solve the problem of waste material environmental protection of phosphate fertilizer production enterprises, reduces the production cost and simultaneously can realize the comprehensive utilization of industrial waste residues.
It should be understood that the above-described embodiments are merely preferred embodiments of the invention and the technical principles applied thereto. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, such variations are within the scope of the invention as long as they do not depart from the spirit of the invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims (4)

1. A fire door core material of phosphogypsum, comprising: 95-99% of gypsum mixture consisting of phosphorus building gypsum, high-strength gypsum, mixed gypsum and II type anhydrous gypsum, 1-5% of excitant, 0.03-0.05% of water reducing agent, 0.03-0.1% of organic silicon oil, 0.03-0.06% of reinforcing agent, 0.005-0.01% of PP fiber and 0.0003-0.0006% of foaming agent.
2. Fire door core material in phosphogypsum according to claim 1, characterized in that: the foaming agent is prepared from the following raw materials in percentage by weight of 1: mixing water at a ratio of 300-500.
3. Fire door core material of phosphogypsum according to claim 1 or 2, characterized in that: the foaming agent is a mixture of a basf 3110 and a basf 812, wherein the percentage of the basf 3110 and the basf 812 is 60% -80%:40 to 20 percent.
4. The preparation method of the ardealite fireproof door core material is characterized by comprising the following steps of: the method comprises the following steps:
step S1: weighing the mixed foaming agent, adding 300-500 times of clear water for dilution to prepare foaming liquid, and uniformly mixing;
step S2: selecting a gypsum mixture consisting of phosphorus building gypsum, high-strength gypsum, mixed item gypsum and II type anhydrous gypsum, detecting the standard thickening water consumption of the gypsum mixture, and mixing and stirring the gypsum mixture and clean water for 2 minutes by a stirrer;
and step S3: sequentially adding 1-5% of excitant, 0.03-0.05% of water reducing agent, 0.03-0.1% of organic silicone oil, 0.03-0.06% of reinforcing agent and 0.005-0.01% of PP fiber into a stirrer to be uniformly stirred with the slurry to obtain slurry;
and step S4: starting a foaming machine, and beating the foaming liquid into foam through the foaming machine; adding the foam into a stirrer, and uniformly stirring to obtain mixed slurry; weighing 1000ml of the mixed slurry by using a measuring cup, and controlling the diffusivity of the mixed slurry between 360 and 370 to obtain foamed slurry;
step S5: sending the prepared foaming slurry into a forming die for forming, placing 1 part of three-dimensional gridding cloth into the forming die before pouring, and attaching a silica gel sleeve on the surface of a steel plate of the forming die;
step S6: and demolding after the slurry is finally set, and drying and maintaining for 6 hours or naturally drying for 7 days before leaving the factory.
CN202210990342.7A 2022-08-18 2022-08-18 Phosphogypsum fireproof door core material and preparation method thereof Pending CN115448682A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116283194A (en) * 2023-04-12 2023-06-23 武汉科技大学 Foaming phosphogypsum fireproof door core board cementing material and preparation method thereof

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159302A (en) * 1975-10-14 1979-06-26 Georgia-Pacific Corporation Fire door core
US6340389B1 (en) * 2000-12-18 2002-01-22 G-P Gypsum Corporation Fire door core
CN103626458A (en) * 2012-08-22 2014-03-12 北京建筑材料科学研究总院有限公司 Preparation method for lightweight gypsum-based fireproof door core board
CN110950621A (en) * 2019-12-16 2020-04-03 湖南昌迅科技环保股份有限公司 Gypsum foamed door core board and preparation method thereof
CN111848088A (en) * 2020-07-29 2020-10-30 瓮福化工科技有限公司 Gypsum-based fireproof door core plate and preparation method thereof
CN112079614A (en) * 2020-06-09 2020-12-15 昆明理工大学 High-strength phosphogypsum-based building gypsum product
CN114315298A (en) * 2021-12-31 2022-04-12 贵州正和天筑科技有限公司 Ardealite fireproof door core board and preparation method thereof
CN114621026A (en) * 2021-05-20 2022-06-14 瓮福化工科技有限公司 Gypsum-based light sound insulation prefabricated groove heat insulation board and preparation method thereof
CN114853439A (en) * 2022-06-01 2022-08-05 瓮福(集团)有限责任公司 Phosphogypsum-based fireproof door core board and preparation process thereof

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159302A (en) * 1975-10-14 1979-06-26 Georgia-Pacific Corporation Fire door core
US6340389B1 (en) * 2000-12-18 2002-01-22 G-P Gypsum Corporation Fire door core
CN103626458A (en) * 2012-08-22 2014-03-12 北京建筑材料科学研究总院有限公司 Preparation method for lightweight gypsum-based fireproof door core board
CN110950621A (en) * 2019-12-16 2020-04-03 湖南昌迅科技环保股份有限公司 Gypsum foamed door core board and preparation method thereof
CN112079614A (en) * 2020-06-09 2020-12-15 昆明理工大学 High-strength phosphogypsum-based building gypsum product
CN111848088A (en) * 2020-07-29 2020-10-30 瓮福化工科技有限公司 Gypsum-based fireproof door core plate and preparation method thereof
CN114621026A (en) * 2021-05-20 2022-06-14 瓮福化工科技有限公司 Gypsum-based light sound insulation prefabricated groove heat insulation board and preparation method thereof
CN114315298A (en) * 2021-12-31 2022-04-12 贵州正和天筑科技有限公司 Ardealite fireproof door core board and preparation method thereof
CN114853439A (en) * 2022-06-01 2022-08-05 瓮福(集团)有限责任公司 Phosphogypsum-based fireproof door core board and preparation process thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
《中国建筑材料年鉴》编委会: "中国建筑材料年鉴1985-1986", 中国建材工业出版社出版, pages: 1429 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116283194A (en) * 2023-04-12 2023-06-23 武汉科技大学 Foaming phosphogypsum fireproof door core board cementing material and preparation method thereof

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Application publication date: 20221209