CN112079614A - High-strength phosphogypsum-based building gypsum product - Google Patents
High-strength phosphogypsum-based building gypsum product Download PDFInfo
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- CN112079614A CN112079614A CN202010517528.1A CN202010517528A CN112079614A CN 112079614 A CN112079614 A CN 112079614A CN 202010517528 A CN202010517528 A CN 202010517528A CN 112079614 A CN112079614 A CN 112079614A
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- phosphogypsum
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- gypsum
- parts
- based building
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- 239000010440 gypsum Substances 0.000 title claims abstract description 96
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 96
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 title claims abstract description 81
- 239000000843 powder Substances 0.000 claims abstract description 75
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 19
- 239000000835 fiber Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 11
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 claims description 3
- 238000004137 mechanical activation Methods 0.000 claims description 2
- 229910052925 anhydrite Inorganic materials 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000002910 solid waste Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000000047 product Substances 0.000 description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000012360 testing method Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000011812 mixed powder Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical class [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 150000004683 dihydrates Chemical class 0.000 description 1
- 208000028659 discharge Diseases 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000665 guar gum Substances 0.000 description 1
- 229960002154 guar gum Drugs 0.000 description 1
- 235000010417 guar gum Nutrition 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions 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
- C04B28/16—Compositions 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
-
- 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
- C04B22/00—Use of inorganic materials as active ingredients for mortars, concrete or artificial stone, e.g. accelerators, shrinkage compensating agents
- C04B22/08—Acids or salts thereof
- C04B22/14—Acids or salts thereof containing sulfur in the anion, e.g. sulfides
- C04B22/142—Sulfates
- C04B22/143—Calcium-sulfate
- C04B22/144—Phosphogypsum
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a high-strength phosphogypsum-based building gypsum product which comprises the following raw materials in parts by weight: 81-88 parts of phosphogypsum-based building gypsum powder, 7-10 parts of alpha-type semi-hydrated gypsum powder, 1-2 parts of AII-type anhydrous gypsum powder, 2-3 parts of ground original-state phosphogypsum powder and 3-5 parts of gypsum fiber powder. The invention is a high-strength phosphogypsum-based building gypsum product, the whole production process does not generate secondary pollution, the production cost is low, the market competitiveness is strong, the performance of the product reaches the highest level required by the national standard GB/T9776-2008, the adopted modified raw materials are all derived from solid wastes, the wastes are prepared from the wastes, and a new thought is provided for the resource utilization of the solid wastes.
Description
Technical Field
The invention relates to the field of building gypsum, in particular to a high-strength phosphogypsum-based building gypsum product.
Background
Phosphogypsum is a bulk solid waste produced in the process of preparing phosphoric acid by a wet method in industry, and the chemical component of the phosphogypsum is calcium sulfate dihydrate (CaSO)4·2H2O) is the main component, and is accompanied by impurities such as soluble phosphorus, organic matters, eutectic phosphorus and the like. With the development of chemical industry, China still faces a severe situation of high yield and low utilization rate in the aspect of phosphogypsum, most of the phosphogypsum is directly stockpiled without any treatment, a large amount of land is occupied, and the environment is polluted. The phosphogypsum-based building gypsum product is a powdery cementing material prepared by taking industrial byproduct phosphogypsum as a raw material through high-temperature calcination and partial dehydration, and the main component of the powdery cementing material is beta-calcium sulfate hemihydrate (beta-CaSO)4·1/2H2O). Products such as gypsum partition boards, gypsum blocks, gypsum ceilings and the like made of phosphogypsum-based building gypsum have the functions of heat preservation and humidity regulationThe building material has the advantages of sound insulation, fire prevention, waste utilization, environmental protection and the like, and is an ideal novel green building material meeting the development requirements of future assembly type buildings. And the manufacturing method of the phosphogypsum-based building gypsum product is simple, the production period is short, the energy consumption is low, and the preparation of the building gypsum product by using the phosphogypsum calcination treatment is an effective way for improving the utilization rate of the phosphogypsum. However, building gypsum products directly prepared from phosphogypsum are often poor in performance, and the resource utilization approach of phosphogypsum is greatly restricted. The main reason is that impurities contained in the phosphogypsum cannot be effectively removed in the process of preparing phosphogypsum-based building gypsum products, and the impurities seriously influence the crystal development of the phosphogypsum-based building gypsum products after hydration, thereby causing the loss of strength. On the other hand, in actual operation, in order to meet certain operability requirements, ardealite-based building gypsum products are often added with excessive moisture. When the phosphogypsum-based building gypsum product is completely hydrated, excessive free water is evaporated, and a large number of gaps are left to cause strength reduction.
In order to improve the performance of phosphogypsum-based building gypsum, a great deal of research is carried out by scholars:
CN201910539905.9 discloses a high-strength building gypsum powder, which takes phosphogypsum as a main raw material and comprises the following substances: 1-4 parts of a water reducing agent, 2-5 parts of carboxymethyl cellulose, 5-10 parts of calcium carbonate, 1-4 parts of aluminum nitrate, 0.1-0.4 part of aluminum trichloride, 2-4 parts of guar gum, 40-60 parts of water, 30-50 parts of a composite gypsum powder base material and 12-20 parts of a fiber modifier. The invention solves the problem of low compression strength and low breaking strength of the prior common building gypsum powder. CN201710337187.8 discloses a method for preparing building gypsum powder by using phosphogypsum, which comprises the steps of mixing phosphogypsum powder with water to obtain phosphogypsum slurry, adding a thickening agent and a water reducing agent, carrying out steam-pressing and drying to obtain a gypsum mixture, uniformly dividing the gypsum mixture into equal parts, putting the equal parts into a beaker, spraying a sodium sulfate solution on each part of the dried substance, heating and preserving heat, adding aluminum silicate fibers, mixing, adding saturated limewater, stirring and heating, introducing oxygen and sulfur dioxide gas, cooling, drying, calcining and crushing to obtain the building gypsum powder. The building gypsum powder obtained by the method has high strength, and does not cause equipment investment and pollution discharge treatment. CN201711349461.X provides a modification method of a phosphogypsum building gypsum product, which comprises the following steps: (1) mixing phosphogypsum building gypsum powder with quick lime uniformly; (2) adjusting the pH value of the process water to 3-5, and adding a modifying material, a water reducing agent and a retarder; (3) measuring the water consumption of standard consistency and the initial setting and final setting time when different additives are dissolved; (4) weighing the mixture prepared in the step (1), adding the mixture into standard-consistency water in which a modified material, a water reducing agent and a retarder are dissolved, and preparing a test piece; (5) the product was measured for 2h and oven dry strength. The method effectively improves the strength of the gypsum product, improves the performance of the building gypsum powder produced by the phosphogypsum, and provides a feasible technical method for the phosphogypsum building gypsum product.
In conclusion, most researchers mostly aim at the raw material pretreatment and additive modified phosphogypsum-based building gypsum, although the performance of the phosphogypsum-based building gypsum can reach or even exceed the national standard requirements, the generated secondary pollution and the high production cost are violated from the initial purposes of solid waste resource utilization and environmental protection, and the market competitiveness of the phosphogypsum-based building gypsum is also reduced. So far, no method has been mentioned for obtaining a high strength phosphogypsum-based building gypsum product by modifying the internal crystal form development of the phosphogypsum-based building gypsum with various dehydration phase products prepared from phosphogypsum powder.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-strength phosphogypsum-based building gypsum product.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention relates to a high-strength phosphogypsum-based building gypsum product which comprises the following raw materials in parts by weight: 81-88 parts of phosphogypsum-based building gypsum powder, 7-10 parts of alpha-type semi-hydrated gypsum powder, 1-2 parts of AII-type anhydrous gypsum powder, 2-3 parts of ground original-state phosphogypsum powder and 3-5 parts of gypsum fiber powder.
As a preferred technical scheme of the invention, the alpha-type semi-hydrated gypsum powder, the AII-type anhydrous gypsum powder and the gypsum fiber powder are one or a mixture of more of phosphogypsum, desulfurized gypsum or natural gypsum powder.
As a preferred technical scheme of the invention, the phosphogypsum-based building gypsum powder, the alpha-type semi-hydrated gypsum powder, the AII-type anhydrous gypsum powder and the ground original-state phosphogypsum powder are all prepared by mechanical activation, so that the specific surface area of the phosphogypsum-based building gypsum powder is more than 300g/cm2。
As a preferable technical scheme of the invention, the average diameter of the gypsum fiber is 1-8 μm, the average length-diameter ratio is 10-200, and the content of calcium sulfate is more than 98%.
Compared with the prior art, the invention has the following beneficial effects:
the invention is a high-strength phosphogypsum-based building gypsum product, the whole production process does not generate secondary pollution, the production cost is low, the market competitiveness is strong, the performance of the product reaches the highest level required by the national standard GB/T9776-2008, the adopted modified raw materials are all derived from solid wastes, the wastes are prepared from the wastes, and a new thought is provided for the resource utilization of the solid wastes.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.
Example 1
The invention is further described in detail by examples by using alpha-type hemihydrate gypsum powder, AII type anhydrous gypsum powder, ground dihydrate phosphogypsum powder and gypsum fiber modified phosphogypsum-based building gypsum with different water loss phases, but the scope of protection of the invention is not limited to the contents. Examples phosphogypsum comes from a manufacturing company and its chemical composition (w/%) is shown in table 1. Examples the basic properties of the water loss phase of the different plasters are shown in table 2.
TABLE 1 chemical composition of phosphogypsum (w/%)
TABLE 2 basic Properties of the test materials
The main manufacturing raw materials comprise 81 parts of phosphogypsum-based building gypsum powder, 9 parts of alpha-type semi-hydrated gypsum powder, 2 parts of AII-type anhydrous gypsum powder, 3 parts of ground original-state phosphogypsum powder and 5 parts of gypsum fiber powder.
A high-strength phosphogypsum-based building gypsum product mainly comprises the following steps:
(1) uniformly mixing phosphogypsum-based building gypsum powder, alpha-type semi-hydrated gypsum powder, AII-type anhydrous gypsum powder and gypsum fiber powder according to a proportion, and testing the standard thick water-cement ratio.
(2) Adding water consumption required by thickening into the mixed powder, and scattering the ground original phosphogypsum powder with a designed proportion while stirring to prepare a test piece.
(3) The setting time and the mechanical properties of the product are measured.
Through tests, the physical property test results of the phosphogypsum-based building gypsum product blank group and the modification group are shown in the table 3.
TABLE 3 basic Performance test results for phosphogypsum-based building Gypsum blank group and modified group
Example 2
The main manufacturing raw materials comprise 87 parts of phosphogypsum-based building gypsum powder, 7 parts of alpha-type semi-hydrated gypsum powder, 1 part of AII-type anhydrous gypsum powder, 2 parts of ground original-state phosphogypsum powder and 3 parts of gypsum fiber powder.
A high-strength phosphogypsum-based building gypsum product mainly comprises the following steps:
(1) uniformly mixing phosphogypsum-based building gypsum powder, alpha-type semi-hydrated gypsum powder, AII-type anhydrous gypsum powder and gypsum fiber powder according to a proportion, and testing the standard thick water-cement ratio.
(2) Adding water consumption required by thickening into the mixed powder, and scattering the ground original phosphogypsum powder with a designed proportion while stirring to prepare a test piece.
(3) The setting time and the mechanical properties of the product are measured.
Through tests, the physical property test results of the phosphogypsum-based building gypsum product blank group and the modification group are shown in the table 4.
TABLE 4 basic Performance test results for phosphogypsum-based building Gypsum blank group and modified group
Example 3
The main manufacturing raw materials comprise 84 parts of phosphogypsum-based building gypsum powder, 8 parts of alpha-type semi-hydrated gypsum powder, 1 part of AII-type anhydrous gypsum powder, 2 parts of ground original-state phosphogypsum powder and 5 parts of gypsum fiber powder.
A high-strength phosphogypsum-based building gypsum product mainly comprises the following steps:
(1) uniformly mixing phosphogypsum-based building gypsum powder, alpha-type semi-hydrated gypsum powder, AII-type anhydrous gypsum powder and gypsum fiber powder according to a proportion, and testing the standard thick water-cement ratio.
(2) Adding water consumption required by thickening into the mixed powder, and scattering the ground original phosphogypsum powder with a designed proportion while stirring to prepare a test piece.
(3) The setting time and the mechanical properties of the product are measured.
Through tests, the physical property test results of the phosphogypsum-based building gypsum product blank group and the modification group are shown in the table 5.
TABLE 5 basic Performance test results for phosphogypsum-based building Gypsum blank set and modified set
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 (4)
1. A high-strength phosphogypsum-based building gypsum product is characterized by comprising the following raw materials in parts by weight: 81-88 parts of phosphogypsum-based building gypsum powder, 7-10 parts of alpha-type semi-hydrated gypsum powder, 1-2 parts of AII-type anhydrous gypsum powder, 2-3 parts of ground original-state phosphogypsum powder and 3-5 parts of gypsum fiber powder.
2. The high-strength phosphogypsum-based building gypsum product of claim 1, wherein the alpha-type hemihydrate gypsum powder, the AII-type anhydrite powder and the gypsum fiber powder are one or more of phosphogypsum, desulfurized gypsum or natural gypsum powder.
3. The high strength phosphogypsum-based building gypsum product of claim 1, wherein the phosphogypsum-based building gypsum powder, alpha-type hemihydrate gypsum powder, AII-type anhydrite gypsum powder and ground raw phosphogypsum powder are all prepared by mechanical activation, so that the specific surface area is more than 300g/cm2。
4. The high strength phosphogypsum-based building gypsum product of claim 1, which is characterized in that the gypsum fibers have an average diameter of 1-8 μm, an average aspect ratio of 10-200 and a calcium sulfate content of more than 98%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010517528.1A CN112079614A (en) | 2020-06-09 | 2020-06-09 | High-strength phosphogypsum-based building gypsum product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010517528.1A CN112079614A (en) | 2020-06-09 | 2020-06-09 | High-strength phosphogypsum-based building gypsum product |
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| Publication Number | Publication Date |
|---|---|
| CN112079614A true CN112079614A (en) | 2020-12-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113772979A (en) * | 2021-09-15 | 2021-12-10 | 贵州中建建筑科研设计院有限公司 | Reference phosphorus building gypsum and manufacturing method and application thereof |
| CN114538811A (en) * | 2021-11-12 | 2022-05-27 | 天宝动物营养科技股份有限公司 | Method for preparing high-strength gypsum from phosphogypsum |
| CN115448682A (en) * | 2022-08-18 | 2022-12-09 | 浙江慧泽科技发展有限公司 | Phosphogypsum fireproof door core material and preparation method thereof |
-
2020
- 2020-06-09 CN CN202010517528.1A patent/CN112079614A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113772979A (en) * | 2021-09-15 | 2021-12-10 | 贵州中建建筑科研设计院有限公司 | Reference phosphorus building gypsum and manufacturing method and application thereof |
| CN114538811A (en) * | 2021-11-12 | 2022-05-27 | 天宝动物营养科技股份有限公司 | Method for preparing high-strength gypsum from phosphogypsum |
| CN115448682A (en) * | 2022-08-18 | 2022-12-09 | 浙江慧泽科技发展有限公司 | Phosphogypsum fireproof door core material and preparation method thereof |
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