CN106186772A - A kind of alkaline residue water-retaining agent and spray drying preparation thereof and application - Google Patents
A kind of alkaline residue water-retaining agent and spray drying preparation thereof and application Download PDFInfo
- Publication number
- CN106186772A CN106186772A CN201610565880.6A CN201610565880A CN106186772A CN 106186772 A CN106186772 A CN 106186772A CN 201610565880 A CN201610565880 A CN 201610565880A CN 106186772 A CN106186772 A CN 106186772A
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- China
- Prior art keywords
- alkaline residue
- water
- retaining agent
- spray drying
- dechlorination
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Classifications
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- 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
-
- 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
-
- 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
- C04B2103/46—Water-loss or fluid-loss reducers, hygroscopic or hydrophilic agents, water retention agents
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- 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)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of alkaline residue water-retaining agent and spray drying preparation thereof and application, utilize drying process with atomizing that dechlorination alkaline residue slurry is prepared as 0.30mm and tail over the powder body less than 10wt%, as water-retaining agent.Inorganic particle water-retaining agent good water-retaining property prepared by the present invention, economic and environment-friendly, it is possible to for improving the water-retaining property of mortar and the contractility of concrete.
Description
Technical field
The invention belongs to building material field, be specifically related to one and utilize drying process with atomizing prepared by dechlorination alkaline residue slurry
Become powder body, as method and the application of water-retaining agent.
Background technology
The waste residue that alkaline residue is ammonia-soda process soda and produces, China is currently soda manufacture state maximum in the world, often
The alkaline residue that year produces because producing soda is up to 3,000,000 tons, and such substantial amounts of alkaline residue causes many problem of environmental pollutions already.
But alkaline residue chloride ion content is high, under absolute dry condition, the mass of ion mark of chloride ion can reach 10%, and this gives combining of alkaline residue
Closing improvement and bring great difficulty, current China alkaline residue utilization rate only has 3～4%, the most still stores up or fills out sea process, this
Also result in the biggest environmental problem.
By the analysis to alkaline residue microstructure, find that alkaline residue has large quantity micropore gap, therefore consider to dechlorinate alkaline residue
After, as mortar and the water-retaining agent of concrete.
At present mortar and concrete water-retaining agent area research more be organic water retainer.
(1) in mortar, main employing cellulose ethers water-retaining agent improves mortar bonding performance.In recent years, all kinds of novel walls
Material is widely used, its rough surface porous, and spreading upon the mixing water in mortar thereon can quickly be siphoned away by materials for wall,
This is to mortar performance, and particularly adhesion strength and cracking resistance is all had higher requirement.Mix cellulose ethers water-retaining agent
Can effectively solve the problem that this problem, but this water-retaining agent there is also the problem that price is high, be badly in need of exploitation inorganic water-retaining agent at a low price.
(2) concrete mainly use super absorbent resin (SAP) improve concrete performance.The self-constriction of concrete is always
It it is the problem that is difficult to avoid that of cement-based gelling material.The especially high performance concrete ratio of mud is low, and self-constriction is bigger, it is easier to produce
Raw crack, affects structure durability.Research both at home and abroad is mainly by the high-hydroscopicity of SAP, it is achieved the interior maintenance of concrete, improves
The contraction of concrete.But SAP equally exists the problem that price is higher, and SAP has water swellability, is admixed to concrete
In, when SAP discharges moisture of its storage, SAP volume-diminished, easily cause concrete voids rate series of problems such as big grade.At present
China is wideling popularize high performance concrete, is badly in need of low cost to solve the self-desiccation shrinkage problem of high performance concrete
Technology.
For improving the water retention of mortar, early stage applicant carried out the research using dechlorination alkaline residue as mortar water-retaining agent, and
Obtain good result, but dechlorination alkaline residue is after dehydration-dried, can bond agglomerating, it is difficult to dispersion.Therefore early stage all uses
The mode of slurrying of being added water by dechlorination alkaline residue before use is applied, but this mode exists, and practice of construction is unhandy asks
Topic.
In view of this, propose the alkaline residue powder process that will dechlorinate, during use, add the thinking in mortar and concrete as water-retaining agent.
The method preparing powder body can be that the method directly using grinding is prepared as powder body dechlorination alkaline residue, but the method can destroy dechlorination
The partial interior pore structure of alkaline residue, causes water-retaining property to have declined.If employing drying process with atomizing, will dechlorination alkaline residue system
Powder, both can be prepared as powder body by dechlorination alkaline residue, can farthest retain again dechlorination pore structure within alkaline residue.
Summary of the invention
The technical problem to be solved is: uses drying process with atomizing to process dechlorination alkaline residue, is ensureing
While dechlorination alkaline residue water retention property, it is prepared into powder body water-retaining agent, solves mortar and the performance issue of concrete, it is achieved become
Waste be changed into values, building industry greenization.
It is as follows that the present invention solves the technical scheme that this technical problem used.
The spray drying preparation of a kind of alkaline residue water-retaining agent, it is characterised in that comprise the following steps:
1) by obtaining the mixture of alkaline residue and water after alkaline residue and water mix homogeneously, the mixture of alkaline residue with water is dehydrated
Process, obtain chloride ion content less than the dechlorination alkaline residue of solid gross mass 1.5wt% in mixture；
2) toward chloride ion content less than the dechlorination alkaline residue of solid gross mass 1.5wt% in mixture adds water, fully stir
Mix uniformly, make dechlorination alkaline residue slurry；
3) dechlorination alkaline residue slurry is introduced spray drying device, make 0.30mm and tail over the powder body less than 10wt%, be i.e. institute
State alkaline residue water-retaining agent.
Further, step 2) described in dechlorinate alkaline residue slurry solid masses percentage ratio depend on spray drying device institute
The size of the size droplet diameter that the slurry concentration allowed and spraying are formed, preferably 20wt%～40wt%.
Further, step 3) described in the nebulizer that uses of spray drying device be the device with atomizing effect, bag
Include the one in centrifugal type atomizer, pressure atomizer and pneumatic atomizer.
Further, step 3) in, the temperature controlling range in hothouse is no more than 120 DEG C or is 360 DEG C～800
℃。
The alkaline residue water-retaining agent prepared by made as described above method.
Described alkaline residue water-retaining agent using method in mortar is to replace the Binder Materials in mortar, and substitution amount is total glue
3wt%～15wt% of gel material amount.
Described alkaline residue water-retaining agent using method in concrete is to replace the Binder Materials in concrete, and substitution amount is total
1wt%～10wt% of Binder Materials amount.
Compared with prior art, present invention have the advantage that
(1) present invention uses spray drying device preparation dechlorination alkaline residue powder body water-retaining agent, it is possible to farthest retains and removes
Pore structure within chlor-alkali slag, does not affect the water retention property of dechlorination alkaline residue..
(2) the powder body water-retaining agent uniform particle sizes that prepared by the present invention, alkaline residue content is big, has high water-retaining property.(3) present invention
The powder body water-retaining agent of preparation, is mainly composed of inorganic material, stable performance, can be effectively improved mortar and concrete performance, and pole
Reduce greatly the use cost of water-retaining agent, there is considerable economy.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment 1
Spray drying method and dechlorination alkaline residue is utilized to prepare alkaline residue water-retaining agent:
1) by obtaining the mixture of alkaline residue and water after alkaline residue and water mix homogeneously, the mixture of alkaline residue with water is dehydrated
Processing, after dehydration, moisture content is 95%, obtains the dechlorination alkaline residue that chloride ion content is solid gross mass 1.2wt% in mixture；
2) in the dechlorination alkaline residue that chloride ion content is solid gross mass 1.2wt% in mixture, add water, be sufficiently stirred for
Uniformly, the dechlorination alkaline residue slurry that solid masses percentage ratio is 20wt% is made；
3) dechlorination alkaline residue slurry is introduced the spray drying device that nebulizer is centrifugal type atomizer, the control in hothouse
Temperature is 80 DEG C, obtains 0.30mm and tails over the alkaline residue water-retaining agent into 4wt%.
Embodiment 2
Spray drying method and dechlorination alkaline residue is utilized to prepare alkaline residue water-retaining agent:
1) by obtaining the mixture of alkaline residue and water after alkaline residue and water mix homogeneously, the mixture of alkaline residue with water is dehydrated
Processing, after dehydration, moisture content is 96%, obtains the dechlorination alkaline residue that chloride ion content is solid gross mass 0.9wt% in mixture.
2) in the dechlorination alkaline residue that chloride ion content is solid gross mass 0.9wt% in mixture, add water, be sufficiently stirred for
Uniformly, the dechlorination alkaline residue slurry that solid masses percentage ratio is 30wt% is made；
3) dechlorination alkaline residue slurry is introduced the spray drying device that nebulizer is pneumatic atomizer, the control in hothouse
Temperature is 100 DEG C, obtains 0.30mm and tails over the alkaline residue water-retaining agent into 8wt%.
Embodiment 3
Spray drying method and dechlorination alkaline residue is utilized to prepare alkaline residue water-retaining agent:
1) by obtaining the mixture of alkaline residue and water after alkaline residue and water mix homogeneously, the mixture of alkaline residue with water is dehydrated
Processing, after dehydration, moisture content is 93%, obtains the dechlorination alkaline residue that chloride ion content is solid gross mass 0.5wt% in mixture；
2) in the dechlorination alkaline residue that chloride ion content is solid gross mass 0.5wt% in mixture, add water, be sufficiently stirred for
Uniformly, the dechlorination alkaline residue slurry that solid masses percentage ratio is 40wt% is made；
3) dechlorination alkaline residue slurry is introduced the spray drying device that nebulizer is centrifugal type atomizer, the control in hothouse
Temperature is 120 DEG C, obtains 0.30mm and tails over the alkaline residue water-retaining agent into 7wt%.
Embodiment 4
Spray drying method and dechlorination alkaline residue is utilized to prepare alkaline residue water-retaining agent:
1) by obtaining the mixture of alkaline residue and water after alkaline residue and water mix homogeneously, the mixture of alkaline residue with water is dehydrated
Processing, after dehydration, moisture content is 95%, obtains the dechlorination alkaline residue that chloride ion content is solid gross mass 0.3wt% in mixture.
2) in the dechlorination alkaline residue that chloride ion content is solid gross mass 0.3wt% in mixture, add water, be sufficiently stirred for
Uniformly, the dechlorination alkaline residue slurry that solid masses percentage ratio is 30wt% is made.
3) dechlorination alkaline residue slurry is introduced the spray drying device that nebulizer is pressure atomizer, the control in hothouse
Temperature is 360 DEG C, obtains 0.30mm and tails over the alkaline residue water-retaining agent into 10wt%.
Embodiment 5
Spray drying method and dechlorination alkaline residue is utilized to prepare alkaline residue water-retaining agent:
1) by obtaining the mixture of alkaline residue and water after alkaline residue and water mix homogeneously, the mixture of alkaline residue with water is dehydrated
Processing, after dehydration, moisture content is 94%, obtains the dechlorination alkaline residue that chloride ion content is solid gross mass 0.8wt% in mixture.
2) in the dechlorination alkaline residue that chloride ion content is solid gross mass 0.8wt% in mixture, add water, be sufficiently stirred for
Uniformly, the dechlorination alkaline residue slurry that solid masses percentage ratio is 30wt% is made.
3) dechlorination alkaline residue slurry is introduced the spray drying device that nebulizer is pressure atomizer, the control in hothouse
Temperature is 800 DEG C, obtains 0.30mm and tails over the alkaline residue water-retaining agent into 9wt%.
The alkaline residue water-retaining agent that embodiment 1～5 prepares is mixed the water made by Test method for strength of hydraulic cement mortar (ISO method)
In earth rubber sand, the alkaline residue water-retaining agent of incorporation replaces cement, records the water-retaining property such as table 1 of cement mortar.
Table 1 mixes the water-retaining property of the cement mortar of each alkaline residue water-retaining agent
| Embodiment is numbered | Volume (wt%) | Water-retaining property (%) |
| Blank | — | 85.8 |
| 1 | 3 | 92.1 |
| 1 | 10 | 96.3 |
| 1 | 15 | 98.6 |
| 2 | 10 | 96.2 |
| 3 | 10 | 97.4 |
| 4 | 10 | 96.9 |
| 5 | 10 | 96.6 |
As shown in Table 1, after filling described alkaline residue water-retaining agent, along with the increase of alkaline residue water-retaining agent volume, water-retaining property constantly carries
Height, when water-retaining agent addition content is 10wt%, the water-retaining property of cement mortar reaches more than 96wt%.
The alkaline residue water-retaining agent obtained in embodiment 1～5 is mixed in the concrete coordinating such as table 2 respectively.
Table 2 concrete mix
Wherein, when the incorporation of alkaline residue water-retaining agent coordinates in the concrete of such as table 2, the volume of the alkaline residue water-retaining agent of incorporation is put down
It is divided into two parts, replaces flyash and graining blast-furnace cinder micro-powder respectively.Mix the 24h of concrete of alkaline residue water-retaining agent from receiving
Shrinkage such as table 3.
Table 3 mixes the concrete 24h rate of self-contraction of alkaline residue water-retaining agent
As shown in Table 3, after filling described alkaline residue water-retaining agent, the contractility of concrete is obviously reduced, when mixing 10wt%,
24h self-constriction can reduce about 60%.
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by described embodiment
Limit, the change made under other any spirit without departing from the present invention and principle, modify, substitute, combine or simplify,
All should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (8)
1. the spray drying preparation of an alkaline residue water-retaining agent, it is characterised in that comprise the following steps:
1) by obtaining the mixture of alkaline residue and water after alkaline residue and water mix homogeneously, the mixture of alkaline residue Yu water is carried out at dehydration
Reason, obtains chloride ion content less than the dechlorination alkaline residue of solid gross mass 1.5wt% in mixture；
2) toward chloride ion content less than the dechlorination alkaline residue of solid gross mass 1.5wt% in mixture adds water, it is sufficiently stirred for all
Even, make dechlorination alkaline residue slurry；
3) dechlorination alkaline residue slurry is introduced spray drying device, make 0.30mm and tail over the powder body less than 10wt%, obtain described alkali
Slag water-retaining agent.
The spray drying preparation of a kind of alkaline residue water-retaining agent the most according to claim 1, it is characterised in that step 2) in
The solid masses percentage ratio of described dechlorination alkaline residue slurry depends on slurry concentration and the spraying that spray drying device allowed
The size of the size droplet diameter formed.
The spray drying preparation of a kind of alkaline residue water-retaining agent the most according to claim 1, it is characterised in that step 2) institute
The solid masses percentage ratio of the dechlorination alkaline residue slurry stated is 20wt% ~ 40wt%.
The spray drying preparation of a kind of alkaline residue water-retaining agent the most according to claim 1, it is characterised in that in step 3)
The nebulizer that described spray drying device uses is the device with atomizing effect, including centrifugal type atomizer, pressure type mist
Change the one in device and pneumatic atomizer.
The spray drying preparation of a kind of alkaline residue water-retaining agent the most according to claim 1, it is characterised in that step 3)
In, the temperature controlling range in hothouse is no more than 120 DEG C or is 360 DEG C ~ 800 DEG C.
6. the alkaline residue water-retaining agent prepared by preparation method described in any one of claim 1-5.
7. alkaline residue water-retaining agent using method in mortar described in claim 6 is to replace the Binder Materials in mortar, substitution amount
3wt% ~ 15wt% for total Binder Materials amount.
8. alkaline residue water-retaining agent using method in concrete described in claim 6 is to replace the Binder Materials in concrete, takes
Generation amount is the 1wt% ~ 10wt% of total Binder Materials amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610565880.6A CN106186772B (en) | 2016-07-15 | 2016-07-15 | Alkali residue water-retaining agent and spray drying preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610565880.6A CN106186772B (en) | 2016-07-15 | 2016-07-15 | Alkali residue water-retaining agent and spray drying preparation method and application thereof |
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| Publication Number | Publication Date |
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| CN106186772A true CN106186772A (en) | 2016-12-07 |
| CN106186772B CN106186772B (en) | 2019-12-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078399A (en) * | 2019-04-16 | 2019-08-02 | 华南理工大学 | The preparation method and equipment of conserving material in a kind of concrete |
| CN111848034A (en) * | 2020-07-16 | 2020-10-30 | 广州大学 | Wet-mixed mortar and preparation process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193202A (en) * | 2014-08-06 | 2014-12-10 | 华南理工大学 | Cement with high water-retaining property |
| CN105032903A (en) * | 2015-09-08 | 2015-11-11 | 华北理工大学 | Method for removing chloride ions in waste alkaline residues |
-
2016
- 2016-07-15 CN CN201610565880.6A patent/CN106186772B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104193202A (en) * | 2014-08-06 | 2014-12-10 | 华南理工大学 | Cement with high water-retaining property |
| CN105032903A (en) * | 2015-09-08 | 2015-11-11 | 华北理工大学 | Method for removing chloride ions in waste alkaline residues |
Non-Patent Citations (3)
| Title |
|---|
| 严卫军: "矿渣用作矿物掺合料对砂浆和混凝土性能影响及其机理研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
| 宋瑞等: "《基础制药设备》", 30 June 2015 * |
| 林宗寿: "《无机非金属材料工学 第4版》", 31 December 2013 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110078399A (en) * | 2019-04-16 | 2019-08-02 | 华南理工大学 | The preparation method and equipment of conserving material in a kind of concrete |
| CN111848034A (en) * | 2020-07-16 | 2020-10-30 | 广州大学 | Wet-mixed mortar and preparation process thereof |
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| Publication number | Publication date |
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| CN106186772B (en) | 2019-12-10 |
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