CN1038247C - New phospho-gypsum cementing agent, and production and application thereof - Google Patents
New phospho-gypsum cementing agent, and production and application thereof Download PDFInfo
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- CN1038247C CN1038247C CN 90103675 CN90103675A CN1038247C CN 1038247 C CN1038247 C CN 1038247C CN 90103675 CN90103675 CN 90103675 CN 90103675 A CN90103675 A CN 90103675A CN 1038247 C CN1038247 C CN 1038247C
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Abstract
The present invention relates to a novel phosphogypsum cementing material for producing building material products. The cementing material has a production method that the phosphogypsum is stir-fried into semi-hydrated gypsum, steel slag is added in the semi-hydrated gypsum according to a certain mixing proportion, and the mixed materials are put in a grinding mill for fine grinding to obtain the present invention. The cementing material has high strength intensity and good waterproof properties, and different skeletal materials or fibers are added in compounding materials for producing building products, such as bricks, wave tiles, building blocks, boards, etc. The present invention can be universally applied to building engineering.
Description
The present invention relates to a kind of material of construction, particularly Phosphogypsum based Gelation Material and preparation method thereof.
For satisfying the waterproof requirement of buildings, the coefficient of softening general requirement to the room construction material reaches more than 0.7 at present.The plaster of paris and chemical phosphorus gypsum be its coefficient of softening 0.3-0.36 only before non-modified, and intensity is low, in order to improve the performance of gypsum, all do many research work both at home and abroad, put down in writing the invention of a kind of " being used to produce the raw material of gelling material " Soviet Union certificate of invention SU1328325 number.This invention is relevant with the raw ingredients of producing gelling material with phosphogypsum.Goal of the invention is to improve physical strength.Reach this purpose, the raw material of producing gelling material must comprise following ingredients: (per-cent %) silicon-dioxide 4.28-9.16, and aluminium sesquioxide 2.32-4.96, three Fe 3 O 0.34-0.72, calcium oxide 0.08-0.17, rest part is phosphogypsum." preparation method is: " with phosphogypsum, silicon-dioxide, aluminium sesquioxide, ferric oxide, calcium oxide is put into 150-170 ℃ pressure, and to steam still steam-cured, its crystal water content can reach 6-7%, this gelling material is made the test block that specification is 4 * 4 * 16cm after adding the slurry that water stirs into normal consistence, tests the intensity that test block is started at two hours intensity when adding water and is dried to constant weight again.Two hours ultimate compression strength of this gelling material is 6-6.5 MPa (MPa), and the ultimate compression strength that is dried to after the constant weight is the 13.5-14.5 MPa.Utilize following raw materials according can meet the requirement of related standards: all the other are CaSO4 phosphogypsum (composition %) P2O5=1.48, F=0.47, H2O=19.7.It is pure that SiO2 and CaO require, and it is analytically pure that Al2O3 and Fe2O3 require." shortcoming of this invention is, needs five kinds of feed proportionings in (1) production process, and the SiO2 in the batching and CaO to require be pure; it is analytically pure that Al2O3 and Fe2O3 require, and has increased the purifying technique of each raw material respectively, proportioning process complexity; cost is higher, it is worthless being used for actual production.(2) its preparation technology is actual is a-semi-hydrated gypsum preparation technology, but its product strength do not reach more than the best intensity (20MPa) of a-semi-hydrated gypsum, thereby the effect that adds SiO2, Al2O3, Fe2O3, CaO does not embody; (3) this invention is not referred to and is introduced SiO2, Al2O3, compounds such as Fe2O3, CaO to other Effect on Performance of Phosphogypsum based Gelation Material, (as coefficient of softening, drying and watering cycle coefficient etc.) and these performances are crucial to the construction work design.
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art part and a kind of novel Phosphogypsum based Gelation Material and production method thereof are provided.It can utilize industrial residue to reduce production costs in a large number, and comprehensive wood property such as ultimate compression strength; Coefficient of softening, do the wet bad coefficient etc. of following and to satisfy requirements such as room construction material ultimate compression strength, waterproof.The production method simple possible, and can make building material mades such as brick, ripple watt, building block, sheet material with it.
Purpose of the present invention can reach by following measure: the phosphogypsum feedstock production that phosphatization factory is discharged becomes β-half water phosphogypsum or anhydrous phosphogypsum, again grinding to fineness less than below 0.1 millimeter, below the slag deironing, dry back grinding to 0.1 millimeter, the two is pressed phosphogypsum: the proportioning of slag=100: 11-50 is mixed, and promptly becomes new modified Phosphogypsum based Gelation Material.
Utilize this modified ardealite gelling material, can prepare burden and produce the material series building goods.The technical process of for example producing brick is shown in Figure of description 1.
The present invention compared with prior art has following advantage:
1, the main raw material phosphogypsum of this novel Phosphogypsum based Gelation Material, slag etc. all are industrial residue, and material is easy to get, cheap.Need not to introduce pure or analytically pure SiO2, Al2O3, compounds such as Fe2O3, CaO.Implement the present invention and can handle industrial residue in a large number, preserve the ecological environment, two get at one stroke.
2, the reliable easily row of production method of the present invention, required equipment is few, and technical process is simple, and the cycle of founding the factory is short, reduced investment.
3, novel Phosphogypsum based Gelation Material ultimate compression strength is more than 14.9MPa, and especially coefficient of softening reaches 0.79-0.87, and water resistance is better than prior art products greatly, can satisfy the requirement of room construction material fully, and mixed economy technical indicator is preferably arranged.
4, this new modified Phosphogypsum based Gelation Material adds aggregates such as cinder, pearlstone, sand or artificial sand respectively and adds a small amount of admixture, can produce building brick, building block, because novel Phosphogypsum based Gelation Material has micro-expansibility, thereby the concrete block masonry body of wall of producing with its batching can be because of not being subjected to do wet or cold and hot temperature alternately influences and ftractures, thereby solved other waste residue blockwork this a great problem easy to crack; Novel Phosphogypsum based Gelation Material adds asbestos, glass fibre, and other regenerated fibers etc. can be produced sheet material, ripple watt building material made such as grade, these goods unit weights are little, intensity height, but widespread use in construction work.
The present invention will be described further in conjunction with the embodiments.
Embodiment one:
Phosphate fertilizer plant is produced the residue phosphogypsum that phosphoric acid discharges (total phosphorous less than 2%) place gypsum kettle inner drying and frying.Phosphogypsum dewaters at normal temperatures and pressures and generates β-half water phosphogypsum.In addition slag is sorted out wherein iron block, will press dehydrated phosphogypsum through the phosphogypsum and the slag of aforesaid method processing then: the mixed of slag=100: 30
Send into the fineness below the grinding machine grinding to 0.1 millimeter evenly and make new phospho-gypsum cementing agent.The ultimate compression strength of the agglutinate that obtains is 18.2MPa, folding strength 4.28MPa, coefficient of softening 0.87.
Embodiment two:
Adopt 240 * 115 * 53 millimeters standard brick die trials, use phosphogypsum: the novel agglutinate of slag=100: 30 mixes 30 parts of cinder aggregates again, produces standard brick, product molding demoulding half an hour, can move arbitrarily in three hours, pile, dispatch from the factory the three day length of time, after tested the institute's data that obtain such as following table:
| Numbering | Water cement ratio | Folding strength (MPa) | Ultimate compression strength (MPa) | ||||
| Maximum | Minimum | On average | Maximum | Minimum | On average | ||
| P-1 | 0.45 | 3.1 | 2.5 | 2.8 | 7.8 | 6.8 | 7.3 |
| P-2 | 0.45 | 3.2 | 2.2 | 2.8 | 7.8 | 5.2 | 6.5 |
| P-3 | 0.45 | 2.3 | 1.7 | 2.1 | 6.0 | 4.5 | 5.5 |
Embodiment three:
Adopt the new phospho-gypsum cementing agent of different proportionings to carry out proportioning, adopt 4 * 4 * 16cm, three joint-trial mold forming, test-results such as following tables with the pearlstone of different umbers.
| Numbering | Proportioning (mark ratio) | Water cement ratio | Folding strength MPa | Ultimate compression strength MPa | Monolithic weight (gram) | Unit weight kg/m 3 | ||
| Half water phosphogypsum | Slag | Pearlstone | ||||||
| Pg-1 | 100 | 18 | 37 | 0.85 | 2.90 | 9.1 | 219 | 885 |
| Pg-2 | 100 | 19 | 51 | 0.85 | 2.44 | 8.79 | 210 | 820 |
| Pg-3 | 100 | 18 | 58 | 0.85 | 2.33 | 7.41 | 194 | 758 |
| Pg-4 | 100 | 16 | 65 | 0.85 | 2.03 | 7.10 | 184 | 719 |
| Pg-5 | 100 | 15 | 73 | 0.85 | 1.62 | 4.93 | 179 | 699 |
Above-mentioned prescription goods unit weight is light, and the intensity height is a kind of very ideal light wall material.
Claims (2)
1, a kind of new phospho-gypsum cementing agent, main ingredient is a dehydrated phosphogypsum, it is characterized in that: added slag in the dehydrated phosphogypsum, its set of dispense composition and division in a proportion is a dehydrated phosphogypsum: slag=100: 11-50.
2,, it is characterized in that total phosphorous is less than 2% in the phosphorus cream according to the described phospho-gypsum cementing agent of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90103675 CN1038247C (en) | 1990-05-16 | 1990-05-16 | New phospho-gypsum cementing agent, and production and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90103675 CN1038247C (en) | 1990-05-16 | 1990-05-16 | New phospho-gypsum cementing agent, and production and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1051719A CN1051719A (en) | 1991-05-29 |
| CN1038247C true CN1038247C (en) | 1998-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90103675 Expired - Fee Related CN1038247C (en) | 1990-05-16 | 1990-05-16 | New phospho-gypsum cementing agent, and production and application thereof |
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| Country | Link |
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| CN (1) | CN1038247C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997002821A2 (en) * | 1995-07-08 | 1997-01-30 | Nihon Nohyaku Co., Ltd. | Antifungal agent, compound therefor, process for producing the same |
| CN1093519C (en) * | 2000-07-07 | 2002-10-30 | 张天保 | Baking-free ardealite brick and its production process |
| CN100457410C (en) * | 2006-01-23 | 2009-02-04 | 山东泰和东新股份有限公司 | Method for producing paper gypsum board using desulfurated gypsum and ardealite |
| CN101475358B (en) * | 2009-01-22 | 2011-07-13 | 武汉德丽宝建筑节能技术有限公司 | Production method for self-heat preserving energy-saving waterproof building block for architectural engineering |
| CN101684675B (en) * | 2009-08-19 | 2012-01-11 | 四川宏达股份有限公司 | Autoclaved phosphogypsum brick and method for preparing same |
| CN102452124A (en) * | 2011-01-30 | 2012-05-16 | 贵州省建筑材料科学研究设计院 | Method for preparing gypsum aerated building block by adopting semi-hydrated gypsum |
| CN103708747A (en) * | 2013-12-02 | 2014-04-09 | 贵州开磷（集团）有限责任公司 | Modified phosphogypsum material used for sea reclamation projects |
| CN105130231B (en) * | 2015-07-23 | 2017-05-24 | 湖南省小尹无忌环境能源科技开发有限公司 | Method of prepare special anhydrite matured slag through treatment of phosphogypsum in vertical kiln factory |
| CN106478127A (en) * | 2016-09-28 | 2017-03-08 | 武汉理工大学 | A kind of ardealite foaming product and preparation method thereof |
| CN111072362A (en) * | 2019-12-26 | 2020-04-28 | 宁波荣山新型材料有限公司 | Light partition board using industrial waste as raw material and preparation method thereof |
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1990
- 1990-05-16 CN CN 90103675 patent/CN1038247C/en not_active Expired - Fee Related
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| CN1051719A (en) | 1991-05-29 |
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