CN101367632A - Modified ardealite setting retarder for cement and its preparing process - Google Patents
Modified ardealite setting retarder for cement and its preparing process Download PDFInfo
- Publication number
- CN101367632A CN101367632A CNA200810046201XA CN200810046201A CN101367632A CN 101367632 A CN101367632 A CN 101367632A CN A200810046201X A CNA200810046201X A CN A200810046201XA CN 200810046201 A CN200810046201 A CN 200810046201A CN 101367632 A CN101367632 A CN 101367632A
- Authority
- CN
- China
- Prior art keywords
- cement
- percent
- setting retarder
- phosphogypsum
- modified ardealite
- 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.)
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
-
- 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
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a modified phosphogypsum cement retarder and the preparation method thereof, comprising the following steps: performing composite modification to the industrial residue phosphogypsum by using acetylene sludge and fly ash which are also industrial residues, meanwhile, adding the glauber-salt powder used as a cement excitant and/or triethanolamine scrap used as a cement grinding aid, wherein the weight percentage of the components thereof is: 90 percent to 95 percent of phosphogypsum, 3 percent to 7 percent of acetylene sludge, 1 percent to 5 percent of fly ash, 1 percent to 3 percent of glauber-salt powder and/or the triethanolamine scrap; the materials are put into a storage hopper, then crushed, balled by a telescopic pelletizer and dried so as to finally obtain the product. The cement retarder prepared through the adoption of the invention can accelerate the hydration, promote the condensation of the cement, improve the initial strength of the cement and eliminate the influence of the soluble minor components upon the hydration of the cement; moreover, the cement retarder contains little moisture in the obtained balls, is stored for a short time, not only utilizes the waste but also is environment friendly, thereby achieving the aims of comprehensively using the waste residue resources and saving resources,; and the cement retarder has low cost, thereby enhancing economic returns for enterprises.
Description
Technical field
The present invention relates to ardealite setting retarder for cement, specifically relate to a kind of modified ardealite of industrial residue that utilizes and make cement setting retarder and preparation method thereof.
Background technology
Phosphogypsum is the industrial residue that discharges in the phosphorous chemical industry enterprise production process, and the stacking of phosphogypsum not only takies a large amount of places and fund, and contaminate environment.Utilize industrial residue phosphogypsum making cement retardant, improve the utilization ratio of waste residue, reduce the pollution of waste residue to ecotope, the stacking that reduces waste residue occupies cultivated land, and save energy reduces production costs, existing relevant report on public publication.
Present phosphogypsum modification technology: be in phosphogypsum, to add unslaked lime to mix, under 800 ℃ temperature, Tumble Dry, add water again and put in storage with the pan-pelletizer granulation.It utilizes lime that the soluble impurity in the phosphogypsum is converted into the indissoluble material, continues to make the solvable minor component of phosphogypsum be converted into soluble or the volatile component under 800 ℃, eliminates the influence of detrimental impurity to hydrated cementitious.The modified ardealite cost height that this method is produced, energy consumption height, moisture big (20%), quality is stable inadequately, and particularly adhesive water does not reach requirement sometimes.There is the product moisture weight in this production method simultaneously, resource consumption is big, energy consumption is big, produce secondary pollution problems.
A kind of " ardealite setting retarder for cement and preparation method thereof " (publication number: CN1279219A) is disclosed at Chinese patent, it is with phosphogypsum 30-70%, flyash 26-60%, calcareous material (as carbide slag) 4-16%, activator 0.1-0.5%, batching, mix, pass through compacting or rotating disk balling-up through stirrer, work in-process are again through natural curing or atmospheric steam curing after the moulding, drying or dry the back product.This ardealite setting retarder for cement substitutes the plaster of paris and makes retardant, turns waste into wealth, reduces environmental pollution, effectively utilized industrial residue.But show after deliberation, still also have following defective: in prescription, the phosphogypsum usage quantity is little, and make cement slow at the hydration process medium velocity, and coagulative power is relatively poor, and early strength is lower, adopt rotating disk nodulizer balling-up moisture big (moisture about 20%), it is long to dry the storage time naturally.
Summary of the invention
The technical problem to be solved in the present invention is that the phosphogypsum slag that phosphorous chemical industry enterprise discharges is carried out modification, and a kind of modified ardealite setting retarder for cement and preparation method thereof is provided.
The applicant to the concentrating on studies of modified ardealite, adopts industrial residue phosphogypsum to make raw material by for many years, improves the utilization ratio of industrial residue, and to make compound properties-correcting agent with industrial residue carbide slag, flyash, carbide slag can provide a large amount of Ca
2+, make solvable phosphorus in the phosphogypsum be converted into the Ca of indissoluble
3(PO
4)
2The calcium hydroxide of carbide slag can activate the activity of flyash, react and generate the aquation jel product, add cement mortar mirabilite powder (mirabilite powder also claims the saltcake breeze) and/or cement grinding aid trolamine tankage simultaneously, change traditional processing technology, make this cement setting retarder in cement hydration process, can quicken aquation, promote cement setting, improve cement early strength; Eliminate the influence of solvable minor component to hydrated cementitious.Improve industrial residue utilization ratio, cut down the consumption of energy, not only sharp useless but also its environment protection significance is bigger, reach the residue resource comprehensive utilization, resources conservation, the purpose of substitution of resources.
The technical solution used in the present invention is as follows:
A kind of modified ardealite setting retarder for cement that utilizes industrial residue to produce, it forms (by weight percentage) by following component:
Phosphogypsum 90～95%, carbide slag 3～7%, flyash 1～5%, mirabilite powder and/or trolamine tankage 1～3%.
Preferably: phosphogypsum 91～94%, carbide slag 3～5%, flyash 1.5～3%, saltcake breeze and/or trolamine tankage 1.5～2.5%.
Best: phosphogypsum 91%, carbide slag 5%, flyash 2%, mirabilite powder and/or trolamine tankage 2%.
The preparation method of this modified ardealite setting retarder for cement, be will be even, make finished product and store through going into feed bin, the balling-up of cartridge type nodulizer, dryer, storage canopy flow process by the mixing of materials that above-mentioned phosphogypsum, carbide slag, flyash, saltcake breeze and/or trolamine tankage are formed.
The temperature of described dryer discharging≤100 ℃.
Described cement mortar mirabilite powder and cement grinding aid trolamine tankage can mix with phosphorus stone and phosphogypsum, carbide slag, the proportional preparation of flyash with any.
This modified ardealite setting retarder for cement detects through the laboratory, and the product the key technical indexes is as follows: 1. SO
335%; 2. crystal water 16 ± 2%; 3. potential of hydrogen: pH value 〉=7; 4. free-water＜14%; 5. insolubles≤5%; 6. pellet diameter (5-30) mm, balling ratio 〉=90%; 7. impurity: water-soluble phosphorus, fluorine content trace, and do not harm cement performance.
Beneficial effect of the present invention is:
(1). because industrial residue phosphogypsum is composite modified with industrial residue carbide slag flyash, improved the utilization ratio of industrial residue, not only sharp useless but also environmental protection, reach the residue resource comprehensive utilization, resources conservation is with the controlling waste residue waste residue, cheap, improve the business economic benefit;
(2). owing to add cement mortar saltcake breeze and/or cement grinding aid trolamine tankage in prescription, the cement setting retarder that the present invention is prepared can quicken aquation in cement hydration process, promotes cement setting, improves cement early strength; Eliminate the influence of solvable minor component to hydrated cementitious;
(3). the preparation method of this modified ardealite setting retarder for cement compares with existing preparation technology, and bake out temperature is low, and drop temperature≤100 ℃ reduce energy consumption;
(4). owing to adopt the balling-up of cartridge type nodulizer, product moisture little (18%), storage time short (about 5 days).
The present invention compares with " ardealite setting retarder for cement and preparation method thereof " (application number 99116529.2), cement mortar saltcake breeze and/or cement grinding aid trolamine tankage have been increased in the batching, and the present invention adopts carbide slag, flyash composite modified, the cement setting retarder that the present invention is prepared, in cement hydration process, can quicken aquation, promote cement setting, improve cement early strength; Eliminate the influence of solvable minor component to hydrated cementitious; Cartridge type nodulizer balling-up moisture little (18%), the storage time short (about 5 days).Its quality product, economic benefit, social benefit are more remarkable.
Description of drawings:
Fig. 1 is a process flow sheet of the present invention.
Embodiment
The batching of this modified ardealite setting retarder for cement is pressed embodiment 1～10 batching in the table 1.
Table 1
Embodiment 11
The preparation method of this modified ardealite setting retarder for cement, referring to Fig. 1:
Select embodiment 1～10 batching, with forklift carbide slag, flyash, mirabilite powder (breeze) and/or trolamine amine tankage are mixed earlier; Again phosphogypsum and the compound that mixes are mixed by proportioning with forklift, go into feed bin, rotary conveyor is sent into pulverizer and is pulverized, and is crushed to granularity≤1mm, the quantitative belt of speed governing claims feed, powder is sent into the cartridge type nodulizer with rotary conveyor again, at the Zhong Jiashui that rolls, and further homogenizing balling-up (ball moisture 18%), this wet feed ball is sent into dryer with rotary conveyor, Tumble Dry to moisture 14%, drop temperature≤100 ℃ are sent into rotary conveyor and are stored the heap canopy and store.
Wet feed sends into that to dry in the dryer to moisture be 14% to get final product, the bake out temperature of described dryer discharging≤100 ℃, and the ratio of grinding media to material example that goes out nodulizer is 80% suitable, crosses that balling-up moisture is excessive at most, above-mentioned each equipment all is existing installations.
This product detects through cement mill chemical examination department, and through the flourish cement of Guanghan star limited liability company, the use in 1 year of the sharp gloomy cement company in Deyang, proves can substitute the plaster of paris fully as cement setting retarder.Modified ardealite setting retarder for cement of the present invention shows through use: 1.. high-quality: this product SO
3Content is high and stable, and retarding effect is good, and usage quantity is few than natural dihydrate gypsum; 2.. energy-conservation: this product physical aspect is spherical, and particle diameter (5-30) mm, intensity are moderate, need not fragmentation, make things convenient for weigher evenly to prepare burden.3.. environmental protection: this product belongs to the energy-conserving and environment-protective product of industrial residue comprehensive utilization, after directly using, 1-2 airborne dust point in the time of can reducing plaster of paris fragmentation.4. economical: this product only accounts for plaster of paris price about 50%.
Table 2 modified effect contrast of the present invention
Show from table 2: handle application of ardealite as cement retardant with carbide slag, flyash, its performance is suitable with the cement that adopts the plaster of paris, only slightly prolongs time of coagulation.3d intensity has reduction slightly, and 28d slightly increases.
Phosphogypsum of the present invention is made cement setting retarder after carbide slag, flyash, mirabilite powder, trolamine tankage combination treatment, overcome with carbide slag+flyash and handled when making cement setting retarder, the defective that cement early strength reduces is the retardant that performance is better than the plaster of paris.
The effect of this modified ardealite setting retarder for cement is shown in the following table
(1) this modified ardealite chemical ingredients sees Table 3.
(2) this modified ardealite radioactivity sees Table 4.
(3) physicals of making retardant with this modified ardealite and the plaster of paris with a kind of grog contrasts, and sees Table 5.
(4) this modified ardealite and the plaster of paris are done the contrast of cement setting retarder, see Table 6.
(5) contrast of this modified ardealite and the made cement of the plaster of paris and water reducer consistency sees Table 7.
(6) this modified ardealite and the influence contrast of the plaster of paris to workability of concrete energy and intensity thereof see Table 8.
(7) this modified ardealite and the intensity contrast that adopts the plaster of paris see Table 9.
This modified ardealite of table 3 chemical ingredients
| Loss | S iO 2 | Al 2O 3 | Fe 2O 3 | CaO | MgO |
| 18.71 | 7.86 | 2.78 | 0.35 | 30.26 | 0.30 |
| SO 3 | Crystal water | Total phosphorus | Solvable phosphorus | Solvable F | PH |
| 37.96 | 16.13 | 0.48 | 0.02 | 0.02 | >7.0 |
Loss on ignition (Loss) silicon-dioxide (SiO
2) aluminium sesquioxide (Al
2O
3)
Ferric oxide (Fe
2O) calcium oxide (CaO) magnesium oxide (MgO)
This modified ardealite of table 4 radioactivity
Table 5 is done the physicals contrast of retardant with this modified ardealite and the plaster of paris with a kind of grog
This modified ardealite of table 6 and the plaster of paris are done the contrast of cement setting retarder
The contrast of this modified ardealite of table 7 and the made cement of the plaster of paris and water reducer consistency
| The sample title | Sulfamate | Poly-antelope acid | Naphthalene system | Wood calcium | Sugar calcium |
| Modified ardealite | 1.2 | 1.0 | 0.8 | 1.6 | 1.3 |
| The plaster of paris | 1.2 | 1.2 | 0.8 | 1.2 | 1.5 |
The cement sample of mixing modified ardealite with mix comparing of natural dihydrate gypsum, the saturation point volume of itself and poly-antelope acid water reducer, naphthalene water reducer, sugared calcium, amine sulfonate water reducer is little, its consistency is better than natural dihydrate gypsum, has only wooden calcium slightly poor.
This modified ardealite of table 8 and the influence contrast of the plaster of paris to workability of concrete energy and intensity thereof
Table 9 modified ardealite prepared in accordance with the present invention and the intensity contrast that adopts the plaster of paris
| Grog | Dihydrate gypsum | Modified ardealite | Fineness | Consumptive use of water normal consistence ml | Initial set min | Final set min | 1 day Mpa | 3 days Mpa |
| 95 | 5 | 3.6 | 118 | 87 | 119 | 3.6/12.6 | 6.1/26.4 | |
| 95 | 5 | 3.0 | 115 | 63 | 98 | 4.3/14.6 | 6.4/28.3 |
Intensity was improved when above data showed modified ardealite prepared in accordance with the present invention and adopt the plaster of paris.
Claims (6)
1. modified ardealite setting retarder for cement that utilizes industrial residue to produce is characterized in that described cement setting retarder is formed (by weight percentage) by following component:
Phosphogypsum 90～95%;
Carbide slag 3～7%;
Flyash 1～5%;
Mirabilite powder and/or trolamine tankage 1～3%.
2. modified ardealite setting retarder for cement according to claim 1 is characterized in that, described cement setting retarder is formed (by weight percentage) by following component:
Phosphogypsum 91～94%;
Carbide slag 3～5%;
Flyash 1.5～3%;
Mirabilite powder and/or trolamine tankage 1.5～2.5%.
3. modified ardealite setting retarder for cement according to claim 1 is characterized in that, described cement setting retarder is formed (by weight percentage) by following component:
Phosphogypsum 91%, carbide slag 5%, flyash 2%, mirabilite powder and/or trolamine tankage 2%.
4. the preparation method of modified ardealite setting retarder for cement according to claim 1, it is characterized in that, will be even by the mixing of materials that phosphogypsum, carbide slag, flyash, mirabilite powder and/or trolamine tankage are formed, through going into feed bin, pulverizing, using cartridge type nodulizer balling-up moisture 18%, this pellet drying machine oven dry promptly gets product.
5. the preparation method of ardealite setting retarder for cement according to claim 4 is characterized in that: the temperature of described dryer discharging≤100 ℃.
6. the preparation method of ardealite setting retarder for cement according to claim 4, it is characterized in that: it is 14% that described pellet goes out dryer moisture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810046201XA CN101367632A (en) | 2008-09-26 | 2008-09-26 | Modified ardealite setting retarder for cement and its preparing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810046201XA CN101367632A (en) | 2008-09-26 | 2008-09-26 | Modified ardealite setting retarder for cement and its preparing process |
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|---|---|
| CN101367632A true CN101367632A (en) | 2009-02-18 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496934A (en) * | 2013-09-18 | 2014-01-08 | 武汉理工大学 | Phosphogypsum-based surface layer plastering gypsum material and preparation method thereof |
| CN105198246A (en) * | 2015-09-24 | 2015-12-30 | 淮安市楚城水泥有限公司 | Gypsum substitute for producing cement and manufacturing method thereof |
| CN105314911A (en) * | 2015-11-25 | 2016-02-10 | 四川什邡市星天丰科技有限公司 | Purification ardealite cement retarder and preparation process and device thereof |
| CN108609885A (en) * | 2018-05-28 | 2018-10-02 | 四川同庆南风有限责任公司 | A method of it solving mirabilite gypsum and feeds intake difficulty as cement retarder |
| CN111484265A (en) * | 2020-04-22 | 2020-08-04 | 四川清固新材料有限公司 | Cement retarder prepared from nickel gypsum waste residues and preparation method thereof |
| CN111847956A (en) * | 2020-07-14 | 2020-10-30 | 武汉理工大学 | Phosphogypsum-based cement retarder and preparation method and application thereof |
| CN113072318A (en) * | 2021-04-25 | 2021-07-06 | 湖北新洋丰新型建材科技有限公司 | Spherical phosphogypsum and preparation method and application thereof |
| CN113185178A (en) * | 2021-05-14 | 2021-07-30 | 荆楚理工学院 | Phosphogypsum cement retarder and preparation method thereof |
| CN114835418A (en) * | 2022-05-12 | 2022-08-02 | 武汉理工大学 | Mineral admixture suitable for phosphorus-based gelling material and preparation method and application thereof |
| CN115259727A (en) * | 2022-08-30 | 2022-11-01 | 浙江玖龙新材料有限公司 | Concrete ultralong retarder and production process thereof |
| CN116514450A (en) * | 2023-05-16 | 2023-08-01 | 山东诚港新材料科技有限公司 | Gypsum modifier for cement production |
-
2008
- 2008-09-26 CN CNA200810046201XA patent/CN101367632A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496934A (en) * | 2013-09-18 | 2014-01-08 | 武汉理工大学 | Phosphogypsum-based surface layer plastering gypsum material and preparation method thereof |
| CN103496934B (en) * | 2013-09-18 | 2015-09-30 | 武汉理工大学 | A kind of phosphogypsum foundation base brushing gypsum material and preparation method thereof |
| CN105198246A (en) * | 2015-09-24 | 2015-12-30 | 淮安市楚城水泥有限公司 | Gypsum substitute for producing cement and manufacturing method thereof |
| CN105314911A (en) * | 2015-11-25 | 2016-02-10 | 四川什邡市星天丰科技有限公司 | Purification ardealite cement retarder and preparation process and device thereof |
| CN105314911B (en) * | 2015-11-25 | 2018-05-04 | 四川什邡市星天丰科技有限公司 | A kind of preparation process and device of purification type ardealite setting retarder for cement |
| CN108609885B (en) * | 2018-05-28 | 2021-03-30 | 四川同庆南风有限责任公司 | Method for solving feeding difficulty of mirabilite gypsum used as cement retarder |
| CN108609885A (en) * | 2018-05-28 | 2018-10-02 | 四川同庆南风有限责任公司 | A method of it solving mirabilite gypsum and feeds intake difficulty as cement retarder |
| CN111484265A (en) * | 2020-04-22 | 2020-08-04 | 四川清固新材料有限公司 | Cement retarder prepared from nickel gypsum waste residues and preparation method thereof |
| CN111484265B (en) * | 2020-04-22 | 2022-02-18 | 四川清固新材料有限公司 | Cement retarder prepared from nickel gypsum waste residues and preparation method thereof |
| CN111847956A (en) * | 2020-07-14 | 2020-10-30 | 武汉理工大学 | Phosphogypsum-based cement retarder and preparation method and application thereof |
| CN113072318A (en) * | 2021-04-25 | 2021-07-06 | 湖北新洋丰新型建材科技有限公司 | Spherical phosphogypsum and preparation method and application thereof |
| CN113072318B (en) * | 2021-04-25 | 2023-04-07 | 湖北新洋丰新型建材科技有限公司 | Spherical phosphogypsum and preparation method and application thereof |
| CN113185178A (en) * | 2021-05-14 | 2021-07-30 | 荆楚理工学院 | Phosphogypsum cement retarder and preparation method thereof |
| CN114835418A (en) * | 2022-05-12 | 2022-08-02 | 武汉理工大学 | Mineral admixture suitable for phosphorus-based gelling material and preparation method and application thereof |
| CN115259727A (en) * | 2022-08-30 | 2022-11-01 | 浙江玖龙新材料有限公司 | Concrete ultralong retarder and production process thereof |
| CN116514450A (en) * | 2023-05-16 | 2023-08-01 | 山东诚港新材料科技有限公司 | Gypsum modifier for cement production |
| CN116514450B (en) * | 2023-05-16 | 2024-02-06 | 山东诚港新材料科技有限公司 | Gypsum modifier for cement production |
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Application publication date: 20090218 |