CN1159250C - Denatured ardealite brick and its application as cement retardant - Google Patents
Denatured ardealite brick and its application as cement retardant Download PDFInfo
- Publication number
- CN1159250C CN1159250C CNB021388008A CN02138800A CN1159250C CN 1159250 C CN1159250 C CN 1159250C CN B021388008 A CNB021388008 A CN B021388008A CN 02138800 A CN02138800 A CN 02138800A CN 1159250 C CN1159250 C CN 1159250C
- Authority
- CN
- China
- Prior art keywords
- cement
- denatured
- ardealite brick
- ardealite
- brick
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a denatured ardealite brick and the application of the denatured ardealite brick used as a cement retardant. The denatured ardealite brick contains 80 to 95 wt% of ardealite, 2 to 15 wt% of reinforcing agent, and 3 to 10 wt% of denatured agent. A mixture of 100 wt% of the sum of the component quantity is moulded and naturally dried. The denatured ardealite brick has the water content of smaller than 10 wt%, the SO3 of larger than 35 wt%, the pH of larger than 7 and the P2O5 of smaller than 0.1 wt%. The denatured ardealite brick is convenient for storage and transportation and can replace natural dihydrate gypsum or anhydrite to be used as the retardant for cement production. The use performance of the present invention completely reaches the requirement of the cement production, and the denatured ardealite brick can reduces the production cost of cement and enhances cement performance.
Description
Technical field
The present invention relates to the technology of utilizing of phosphorous chemical industry by product phosphogypsum, be specifically related to the application that the phosphogypsum upgrading is made brick and made cement setting retarder.
Background technology
Phosphogypsum is the industrial residue that discharges in the phosphorous chemical industry enterprise production process, and present stacking not only takies a large amount of places and fund, and contaminate environment.Main component in the phosphogypsum is identical with natural dihydrate gypsum.In manufacture of cement, use the plaster of paris to make retardant, so that the cement performance that dispatches from the factory meets national standard.The plaster of paris is from exploiting to factory, and price is more expensive; Some cement will be mixed blended materials such as slag in addition, but the blended material early strength is low, and addition content is limited, and these all make the manufacture of cement cost high.Be prepared into the upgrading ardealite brick with phosphogypsum and replace the plaster of paris as cement setting retarder, price is low, can improve strength of cement, reduces the manufacture of cement cost, increases the cement production enterprise profit.The production of upgrading ardealite brick has also solved the difficult problem that the chemical enterprise waste residue is stacked, and enterprise economizes on the use of funds for phosphorous chemical industry, simultaneously also the comprehensive regulation environment, obviously the phosphogypsum upgrading replaces the plaster of paris to have tangible economic benefit and a social benefit.
Upgrading phosphogypsum " brick " is different from phosphogypsum " ball ", the phosphogypsum water content is big, making ball is deposited in and is difficult for air seasoning together, make ball water ratio height, in manufacture of cement is used, easily cause the cement caking, stop up, and ardealite brick is easy to air seasoning, make upgrading phosphogypsum water content little, in manufacture of cement, use, can not cause disadvantageous effect as the plaster of paris.
Summary of the invention
The objective of the invention is the phosphogypsum slag of phosphorous chemical industry enterprise discharging is carried out upgrading, a kind of upgrading ardealite brick is provided and does the application of cement setting retarder.
Reaching the upgrading ardealite brick of the object of the invention, is to contain 80～95wt% phosphogypsum, 2～15wt% toughener, 3～10wt% modification agent component, the mixture of each group component sum 100wt% is made through moulding, seasoning, this upgrading ardealite brick water content＜10wt%, SO
3＞35wt%, solvable P
2O
3＜0.1wt%.
Described toughener be in blast-furnace slag, flyash, slag or other industrial residue any one or more.
The modification agent of described 3～10wt% is 0～10wt% alkaline matter: any or two kinds in carbide slag, alkaline residue, white clay, cement, lime, the red mud, and the industrial aluminum slag of 0～10wt% or alunite or calcining aluminium vanadine.
The preparation method of this upgrading ardealite brick is that behind stirring and evenly mixing, extrusion molding, seasoning are made by described composition ratio of components admixtion.
The described upgrading ardealite brick water content＜10wt% that makes, SO
3＞35wt%, solvable P
2O
5＜0.1wt%, PH＞7.
This upgrading ardealite brick can replace the plaster of paris to make cement setting retarder fully, and its add-on is cement weight 4～8wt%, compares with the plaster of paris and can also improve the physical index of the cement of producing, and can increase strength of cement especially.
Embodiment
The batching of upgrading ardealite brick should be according to solvable P in the former phosphogypsum
2O
5Content carry out, adjust solvable P in the crucial upgrading ardealite brick that should make preparation
2O
5＜0.1wt%.
The preparation example
Embodiment 1
Get 94 parts of phosphogypsums by weight ratio, 3 parts in lime, 3 parts in slag, batch mixes stirs, be squeezed into adobe after, in the normal temperature seasoning, the upgrading ardealite brick, water ratio 8.9wt%, solvable P
2O
50.05wt%, pH value=8.0, SO
3: 36.79wt%.
Embodiment 2
Get 95 parts of phosphogypsums by weight ratio, 2 parts of alkaline residues, 3 parts in slag, batch mixes stirs, be squeezed into adobe after, get product in the normal temperature seasoning, product water ratio 9.1wt%, solvable P
2O
50.06wt%, pH value=8.2, SO
3: 37.0wt%.
Embodiment 3
Get 91 parts of phosphogypsums by weight ratio, 3 parts in lime, 4 parts in flyash, 2 parts of aluminium slags after batch mixes stirs, are squeezed into adobe, and seasoning gets the upgrading ardealite brick, its water ratio 8.4wt%, solvable P
2O
50.04wt%, pH value 7.6, SO
3: 36.3wt%.
Embodiment 4
Get 93 parts of phosphogypsums by weight ratio, 3 parts of cement, 2 parts in alum, 2 parts of carbide slags after batch mixes stirs, are squeezed into the brick type, and seasoning gets the upgrading ardealite brick, water ratio 9.2wt% in its product, solvable P
2O
50.06wt%, pH value=8.0, SO
3: 37.8wt%.
Embodiment 5
Get 94 parts of phosphogypsums by weight ratio, 2 parts of white claies, 3 parts of red muds, 1 part in slag after batch mixes stirs, is squeezed into adobe, and seasoning gets the upgrading ardealite brick, water ratio 8.5wt% wherein, solvable P
2O
50.04wt%, pH value 7.4, SO
3: 36.92wt%.
Application example
The upgrading ardealite brick is mainly used in cement production enterprise, in conjunction with cement type and blending amount of mixture material, and SO in the upgrading phosphogypsum
3The volume of content decision upgrading phosphogypsum in cement, by identify the performance quality of upgrading gypsum brick with national standard check cement performance.Upgrading phosphogypsum weight percent amount sees Table 1 in the cement ingredient, and the physicals of cement sees Table 2.
Table 1 cement formula
| Embodiment number | Grog | Slag | Wingdale | The upgrading phosphogypsum | Natural dihydrate gypsum |
| 6 | 95 | 5 | |||
| 7 | 81 | 8 | 6 | 5 | |
| 8 | 95 | 5 | |||
| 9 | 81 | 8 | 6 | 5 |
The physicals of table 2 cement
| Embodiment number | Grog | Specific surface area (m 2/kg) | Water requirement (%) | Time of coagulation (h:min) | Stability | 3 days intensity (MPa) | 28 days intensity (MPa) | |||
| Initial set | Final set | Resistance to compression | Anti-folding | Resistance to compression | Anti-folding | |||||
| 6 | 5.0 | 355 | 26.2 | 1∶58 | 3∶08 | Qualified | 31.4 | 6.4 | 56.1 | 8.8 |
| 7 | 4.9 | 350 | 27.1 | 2∶03 | 3∶19 | Qualified | 26.9 | 5.6 | 54.8 | 9.4 |
| 8 | 5.0 | 360 | 26.7 | 2∶50 | 4∶17 | Qualified | 25.6 | 5.0 | 51.0 | 8.1 |
| 9 | 5..2 | 350 | 27.5 | 2∶15 | 3∶50 | Qualified | 23.2 | 5.4 | 52.3 | 8.2 |
As seen make cement setting retarder with the upgrading ardealite instead plaster of paris by data in the table, strength of cement can improve 2～6MPa, and folding strength also obviously improves.
Claims (3)
1, a kind of upgrading ardealite brick, it is characterized in that containing 80～95wt% phosphogypsum, 2～15wt% toughener, 3～10wt% modification agent component, the mixture of each group component sum 100wt%, through moulding, seasoning is made, wherein said toughener is a blast-furnace slag, flyash, in slag or other industrial residue any one or more, the modification agent of described 3～10wt% is 0～10wt% alkaline matter: carbide slag, alkaline residue, white clay, cement, lime, any or two kinds in the red mud, and the industrial aluminum slag of 0～10wt% or alunite or calcining aluminium vanadine, this upgrading ardealite brick water content＜10wt%, SO
3＞35wt%, PH＞7, solvable P
2O
5＜0.1wt%.
2, the preparation method of the described ardealite brick of claim 1 is characterized in that behind stirring and evenly mixing, extrusion molding, seasoning are made by described composition ratio of components admixtion.
3, the application of the described ardealite brick of claim 1., it is characterized in that replacing the plaster of paris to make cement setting retarder, its add-on is cement weight 4～8wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021388008A CN1159250C (en) | 2002-07-16 | 2002-07-16 | Denatured ardealite brick and its application as cement retardant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021388008A CN1159250C (en) | 2002-07-16 | 2002-07-16 | Denatured ardealite brick and its application as cement retardant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1389421A CN1389421A (en) | 2003-01-08 |
| CN1159250C true CN1159250C (en) | 2004-07-28 |
Family
ID=4749720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021388008A Expired - Fee Related CN1159250C (en) | 2002-07-16 | 2002-07-16 | Denatured ardealite brick and its application as cement retardant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1159250C (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1304319C (en) * | 2005-06-14 | 2007-03-14 | 江苏瑞和化肥有限公司 | Process for producing building gypsum powder by phosphorus gypsum |
| US7585485B2 (en) | 2006-07-03 | 2009-09-08 | Tripoliven, C.A. | Process for the physiochemical conditioning of chemical gypsum or phospho-gypsum for use in formulation for cement and other construction materials |
| CN100424034C (en) * | 2006-08-25 | 2008-10-08 | 华中科技大学 | Compound bricks of phosphogypsum, and producing method |
| CN101152737B (en) * | 2006-09-26 | 2011-02-16 | 铜陵化学工业集团有限公司 | Method for squeezing to produce concrete retardation ball with chemical gypsum |
| CN103482896B (en) * | 2013-09-09 | 2015-07-15 | 四川大学 | Phosphogypsum ball and preparation method and application thereof |
| CN104016602B (en) * | 2014-06-27 | 2016-04-06 | 淮安市楚城水泥有限公司 | Industrial residue titanium gypsum is used as the preparation method of cement ingredient |
| CN104072003B (en) * | 2014-07-15 | 2016-07-13 | 铜陵化学工业集团有限公司 | A kind of titanium gypsum prepares the method for cement retarder |
| CN104261716B (en) * | 2014-09-19 | 2016-04-20 | 山东宏艺科技股份有限公司 | A kind of phosphogypsum base cement adjustable solidification agent and preparation method |
| CN105859172B (en) * | 2016-03-31 | 2018-06-26 | 武汉理工大学 | A kind of ardealite base cement super-retarder and preparation method thereof |
| CN107777985A (en) * | 2016-08-31 | 2018-03-09 | 武春洋 | A kind of industrial residue phosphogypsum building block and preparation method thereof |
| CN108069639A (en) * | 2016-11-09 | 2018-05-25 | 星光环保有限公司 | Environmentally friendly curing agent and its manufacturing method |
| CN107140861B (en) * | 2017-06-21 | 2020-10-16 | 湖北宜化集团有限责任公司 | Method for producing cement retarder by using fresh phosphogypsum |
| CN107954636A (en) * | 2017-12-17 | 2018-04-24 | 李巧珍 | A kind of preparation method of modified ardealite high temperature resistant type cement retarder |
| CN108328956B (en) * | 2018-01-09 | 2020-11-06 | 解增信 | Processing method for replacing natural gypsum with phosphogypsum |
| CN111606646B (en) * | 2019-04-29 | 2022-06-03 | 中建材创新科技研究院有限公司 | Phosphogypsum-based plastering gypsum and preparation method thereof |
| CN112851175B (en) * | 2021-02-20 | 2022-08-23 | 四川省生态环境科学研究院 | Device and method for preparing cement retarder by adopting industrial waste residues |
-
2002
- 2002-07-16 CN CNB021388008A patent/CN1159250C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1389421A (en) | 2003-01-08 |
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