CN106220018B - Revolution drying preparation method and the application of a kind of inorganic particle water-retaining agent - Google Patents
Revolution drying preparation method and the application of a kind of inorganic particle water-retaining agent Download PDFInfo
- Publication number
- CN106220018B CN106220018B CN201610565639.3A CN201610565639A CN106220018B CN 106220018 B CN106220018 B CN 106220018B CN 201610565639 A CN201610565639 A CN 201610565639A CN 106220018 B CN106220018 B CN 106220018B
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- Prior art keywords
- alkaline residue
- water
- retaining agent
- mixture
- inorganic particle
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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
- 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
- C04B40/0042—Powdery mixtures
-
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/08—Slag 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
- C04B2103/465—Water-sorbing agents, hygroscopic or hydrophilic agents
Abstract
The invention discloses a kind of inorganic particle water-retaining agent and its revolution drying preparation method and applications, are dried the dechlorination alkaline residue mixture broken up by turning round oven drying method, are prepared into 0.30mm and tail over powder water-retaining agent less than 20wt%.Inorganic particle water-retaining agent good water-retaining property produced by the present invention can be used in the shrinkage for improving the water-retaining property and concrete of mortar.
Description
Technical field
The invention belongs to building material fields, and in particular to a kind of to be prepared using revolution oven drying method and dechlorination alkaline residue mixture
Powder, the method as water-retaining agent and application.
Background technology
Alkaline residue is ammonia-soda process soda ash and the waste residue generated, and China is currently maximum soda manufacture state in the world, often
The alkaline residue that year generates because producing soda ash is up to 3,000,000 tons, and so a large amount of alkaline residue causes many problem of environmental pollutions already.
But alkaline residue chloride ion content is high, and under absolute dry condition, the mass of ion score of chlorion can reach 10%, this is comprehensive to alkaline residue
It closes to administer and brings great difficulty, alkaline residue utilization rate in China's only has 3~4% at present, mainly still stores up or fill out extra large processing, this
Also result in prodigious environmental problem.
It by the analysis to alkaline residue microstructure, finds there is large quantity micropore gap in alkaline residue, therefore considers to dechlorinate alkaline residue
Afterwards, it is used as the water-retaining agent of mortar and concrete.
At present mortar and concrete water-retaining agent area research it is more be organic water retainer.
(1) mainly cellulose ethers water-retaining agent is used to improve mortar bonding performance in mortar.In recent years, all kinds of novel walls
Material is widely used, and rough surface is porous, and smearing the mixing water in mortar on it can be siphoned away by materials for wall quickly,
This is equal to mortar performance, especially adhesion strength and cracking resistance, and more stringent requirements are proposed.Mix cellulose ethers water-retaining agent
It can effectively solve the problem that this problem, but there is also the high problems of price for this water-retaining agent, are badly in need of the inorganic water-retaining agent of exploitation low price.
(2) mainly super absorbent resin (SAP) is used to improve concrete performance in concrete.The self-constriction of concrete is always
It is the problem of cement-based gelling material is difficult to avoid that.The especially high performance concrete ratio of mud is low, and self-constriction is larger, it is easier to produce
Raw crack, influences structure durability.Research realizes the interior maintenance of concrete mainly by the high-hydroscopicity of SAP both at home and abroad, improves
The contraction of concrete.But SAP equally exists the problem of higher price, and SAP has water swellability, is admixed to concrete
In, when SAP discharges the moisture of its storage, SAP volume-diminisheds, a series of problems, such as easily causing concrete voids rate big.At present
China is wideling popularize high performance concrete, is badly in need of inexpensive to solve the problems, such as the self-desiccation shrinkage of high performance concrete
Technology.
To improve the water retention of mortar, early period, applicant carried out use dechlorination alkaline residue mixture grinding as mortar water-retaining agent
Study carefully, and obtain good result, but dechlorinate alkaline residue mixture after dehydration-drying process, can bond agglomerating, it is difficult to disperse.Cause
It is all made of this early period and is adding the mode of water slurrying to apply in dechlorination alkaline residue mixture using preceding, but this mode has reality
The problem of constructing operation inconvenience.
Applicant also develops high-moisture-retention cement (patent No. ZL201410383582.6) using dechlorination alkaline residue mixture,
The water-retaining property of cement is improved using dechlorination alkaline residue mixture.Dechlorination alkaline residue mixture is added in cement, although easy to use,
Cement plant is needed specially to be produced, it is practical to promote and apply more difficulty.
In view of this, proposing, by the alkaline residue mixture powder that dechlorinates, to be added in mortar and concrete as water-retaining agent when using
Thinking.The method for preparing powder can be that dechlorination alkaline residue mixture is directly prepared into powder, but this using the method for grinding
Method can destroy the internal pore structure of dechlorination alkaline residue mixture, cause water-retaining property that can be declined.If using revolution drying
Dechlorination alkaline residue mixture can be not only prepared into powder, but also can farthest retain and remove by the alkaline residue mixture powder that dechlorinates by technique
Pore structure inside chlor-alkali slag mixture.
Invention content
The technical problem to be solved by the present invention is to：Dechlorination alkaline residue mixture is handled using revolution stoving process,
Under the premise of utmostly ensureing dechlorination alkaline residue water retention property, it is prepared into powder water-retaining agent, is solving alkaline residue Synthetic
While reason problem, the performance issue of mortar and concrete is effectively solved, realization is turned waste into wealth.
Technical solution is as follows used by the present invention solves the technical problem.
A kind of revolution drying preparation method of inorganic particle water-retaining agent, includes the following steps：
1) stone is returned into sand return and returns mountain flour at sand return through broken, grinding, for use；
2) mountain flour, alkaline residue and water are returned into sand return and obtains the mixture that mountain flour, alkaline residue and water are returned in sand return after mixing, will return
The mixture that sand returns mountain flour, alkaline residue and water is carried out dehydrating, and obtains chloride ion content less than solid gross mass in mixture
The dechlorination alkaline residue mixture of 1.0wt%；
3) the dechlorination alkaline residue mixture by chloride ion content less than solid gross mass 1.0wt% in mixture carries out breaing up behaviour
Make, obtains dechlorination alkaline residue compound particles；
4) dechlorination alkaline residue compound particles are introduced into revolution drying equipment, 0.30mm is made and tails over powder less than 20wt%
Body obtains inorganic particle water-retaining agent.
Further, described in step 3) breaing up operation refer to using include in beater, reamer, blender it is a kind of general
Bulk and block-like dechlorination alkaline residue mixture are dispersed as dechlorination alkaline residue compound particles.
Further, water is added smoothly to break up in breaing up in operation described in step 3), but the dechlorination alkaline residue after breaing up
The moisture content of compound particles is not more than 150wt%.
Further, in step 3), in rotary dryer controlled at 360 DEG C~800 DEG C.
The inorganic particle water-retaining agent made from made as described above method.
It is total that application method of the inorganic particle water-retaining agent in mortar, which is to replace the cementitious material in mortar, volume,
Cementitious material 5wt%~20wt%.
Application method of the inorganic particle water-retaining agent in concrete is to replace the cementitious material in concrete, volume
For 2wt%~15wt% of total cementitious material.
Compared with prior art, the invention has the advantages that：
(1) equipment that the present invention uses is relatively common, is made without especially ordering.
(2) preparation method proposed by the present invention will not interfere dechlorination alkaline residue mixture during producing powder water-retaining agent
Internal pore structure, water retention property are good.
(3) powder water-retaining agent prepared by the present invention, main component are that stone, alkaline residue and water are returned in sand return, and cheap, performance is steady
It is fixed, different working environments is adapted to, and reduce the use cost of water-retaining agent.
Specific implementation mode
With reference to embodiment, the present invention is described in further detail, embodiments of the present invention are not limited thereto.
Embodiment 1
Inorganic particle water-retaining agent is prepared using revolution oven drying method and dechlorination alkaline residue mixture：
1) stone is returned into sand return and returns mountain flour at sand return through broken, grinding, for use；
2) mountain flour, alkaline residue and water are returned into sand return and obtains the mixture that mountain flour, alkaline residue and water are returned in sand return after mixing, will return
The mixture that sand returns mountain flour, alkaline residue and water is carried out dehydrating, and moisture content is 88% after dehydration, and it is mixing to obtain chloride ion content
The dechlorination alkaline residue mixture of solid gross mass 0.5wt% in object；
3) water is added in the dechlorination alkaline residue mixture that chloride ion content is solid gross mass 0.5wt% in mixture, utilized
Beater carries out breaing up operation, obtains the dechlorination alkaline residue compound particles that moisture content is 102wt%；
4) dechlorination alkaline residue compound particles are introduced into revolution drying equipment, temperature is 360 DEG C in rotary dryer, is made
0.30mm tails over the inorganic particle water-retaining agent for 12wt%.
Embodiment 2
Inorganic particle water-retaining agent is prepared using revolution oven drying method and dechlorination alkaline residue mixture：
1) stone is returned into sand return and returns mountain flour at sand return through broken, grinding, for use；
2) mountain flour, alkaline residue and water are returned into sand return and obtains the mixture that mountain flour, alkaline residue and water are returned in sand return after mixing, will return
The mixture that sand returns mountain flour, alkaline residue and water is carried out dehydrating, and moisture content is 89% after dehydration, and it is mixing to obtain chloride ion content
The dechlorination alkaline residue mixture of solid gross mass 0.9wt% in object；
3) water is added in the dechlorination alkaline residue mixture that chloride ion content is solid gross mass 0.9wt% in mixture, utilized
Reamer carries out breaing up operation, obtains the dechlorination alkaline residue compound particles that moisture content is 105wt%；
4) dechlorination alkaline residue compound particles are introduced into revolution drying equipment, temperature is 800 DEG C in rotary dryer, is made 80
The remaining powder water-retaining agent for being 15wt% of tm screen.
Embodiment 3
Inorganic particle water-retaining agent is prepared using revolution oven drying method and dechlorination alkaline residue mixture：
1) stone is returned into sand return and returns mountain flour at sand return through broken, grinding, for use；
2) mountain flour, alkaline residue and water are returned into sand return and obtains the mixture that mountain flour, alkaline residue and water are returned in sand return after mixing, will return
The mixture that sand returns mountain flour, alkaline residue and water is carried out dehydrating, and moisture content is 82% after dehydration, and it is mixing to obtain chloride ion content
The dechlorination alkaline residue mixture of solid gross mass 0.2wt% in object；
3) water is added in the dechlorination alkaline residue mixture that chloride ion content is solid gross mass 0.2wt% in mixture, utilized
Blender carries out breaing up operation, obtains the dechlorination alkaline residue compound particles that moisture content is 106wt%；
4) dechlorination alkaline residue compound particles are introduced into revolution drying equipment, temperature is 600 DEG C in rotary dryer, is made
0.30mm tails over the powder water-retaining agent for 13wt%.
Embodiment 4
Inorganic particle water-retaining agent is prepared using revolution oven drying method and dechlorination alkaline residue mixture：
1) stone is returned into sand return and returns mountain flour at sand return through broken, grinding, for use；
2) mountain flour, alkaline residue and water are returned into sand return and obtains the mixture that mountain flour, alkaline residue and water are returned in sand return after mixing, will return
The mixture that sand returns mountain flour, alkaline residue and water is carried out dehydrating, and moisture content is 85% after dehydration, and it is mixing to obtain chloride ion content
The dechlorination alkaline residue mixture of solid gross mass 0.4wt% in object；
3) by dechlorination alkaline residue mixture that chloride ion content is solid gross mass 0.4wt% in mixture, to be not added with water directly sharp
It is carried out breaing up operation with reamer, obtains the dechlorination alkaline residue compound particles that moisture content is 102wt%；
4) dechlorination alkaline residue compound particles are introduced into revolution drying equipment, temperature is 700 DEG C in rotary dryer, is made
0.30mm tails over the powder water-retaining agent for 12wt%.
Embodiment 5
Inorganic particle water-retaining agent is prepared using revolution oven drying method and dechlorination alkaline residue mixture：
1) stone is returned into sand return and returns mountain flour at sand return through broken, grinding, for use；
2) mountain flour, alkaline residue and water are returned into sand return and obtains the mixture that mountain flour, alkaline residue and water are returned in sand return after mixing, will return
The mixture that sand returns mountain flour, alkaline residue and water is carried out dehydrating, and moisture content is 86% after dehydration, and it is mixing to obtain chloride ion content
The dechlorination alkaline residue mixture of solid gross mass 0.6wt% in object；
3) by dechlorination alkaline residue mixture that chloride ion content is solid gross mass 0.6wt% in mixture, to be not added with water directly sharp
It is carried out breaing up operation with beater, obtains the dechlorination alkaline residue compound particles that moisture content is 106wt%；
4) dechlorination alkaline residue compound particles are introduced into revolution drying equipment, temperature is 500 DEG C in rotary dryer, is made
0.30mm tails over the powder water-retaining agent for 11wt%.
Inorganic particle water-retaining agent made from Examples 1 to 5 is mixed respectively and presses Test method for strength of hydraulic cement mortar (ISO methods)
The cement mortar of making, the inorganic particle water-retaining agent of incorporation replace the cement in cement mortar, measure each incorporation powder water-retaining agent
Cement mortar water-retaining property such as table 1.
The cement mortar water-retaining property for each powder water-retaining agent that table 1 mixes
| Embodiment is numbered | Volume (wt%) | Water-retaining property (%) |
| Blank | — | 85.8 |
| 1 | 5 | 91.3 |
| 1 | 10 | 92.2 |
| 1 | 15 | 93.6 |
| 1 | 20 | 95.0 |
| 2 | 10 | 93.1 |
| 3 | 10 | 93.6 |
| 4 | 10 | 92.0 |
| 5 | 10 | 92.3 |
As shown in Table 1, after adding the inorganic particle water-retaining agent, cement mortar water-retaining property is with inorganic particle water-retaining agent volume
Increase and improve, when volume is in 10wt%, water-retaining property reaches 92% or more.
The inorganic particle water-retaining agent obtained in Examples 1 to 5 is mixed respectively in the cooperation such as concrete of table 2.
2 concrete mix of table
Wherein, when inorganic particle water-retaining agent mixes in the cooperation such as concrete of table 2, the inorganic particle water-retaining agent of incorporation
Volume be equally divided into two parts, replace flyash and graining blast-furnace cinder micro-powder respectively.Mix the mixed of inorganic particle water-retaining agent
Coagulate such as table 3 of rate of self-contraction for 24 hours of soil.
Table 3 mixes the concrete rate of self-contraction for 24 hours of inorganic particle water-retaining agent
| Embodiment is numbered | Volume (wt%) | Self-constriction (× 10 for 24 hours-6) |
| Blank | — | 56.3 |
| 1 | 2 | 43.8 |
| 1 | 10 | 25.9 |
| 1 | 15 | 20.9 |
| 2 | 5 | 36.1 |
| 3 | 10 | 28.4 |
| 4 | 10 | 27.2 |
| 5 | 10 | 26.8 |
As shown in Table 3, after adding the inorganic particle water-retaining agent, the shrinkage of concrete is obviously reduced.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by the embodiment
Limitation, it is other it is any without departing from the spirit and principles of the present invention made by change, modification, substitute, combination or simplify,
Equivalent substitute mode is should be, is included within the scope of the present invention.
Claims (6)
1. preparation method is dried in a kind of revolution of inorganic particle water-retaining agent, which is characterized in that include the following steps：
1）Stone is returned into sand return and returns mountain flour at sand return through broken, grinding, for use；
2）Mountain flour, alkaline residue and water are returned into sand return and obtains the mixture that mountain flour, alkaline residue and water are returned in sand return after mixing, sand return is returned
The mixture of mountain flour, alkaline residue and water is carried out dehydrating, and obtains chloride ion content less than solid gross mass 1.0wt% in mixture
Dechlorination alkaline residue mixture；
3）Dechlorination alkaline residue mixture by chloride ion content less than solid gross mass 1.0wt% in mixture carries out breaing up operation, obtains
To dechlorination alkaline residue compound particles；It is described that break up operation refer to that will be rolled into a ball using including a kind of in beater, reamer, blender
Shape and block-like dechlorination alkaline residue mixture are dispersed as dechlorination alkaline residue compound particles；
4）Dechlorination alkaline residue compound particles are introduced into revolution drying equipment, 0.30mm is made and tails over powder less than 20wt%, obtains
Inorganic particle water-retaining agent.
2. drying preparation method according to a kind of revolution of inorganic particle water-retaining agent described in claim 1, which is characterized in that step
Rapid 3）Described in break up in operation, water is added smoothly to break up, but the dechlorination alkaline residue compound particles after breaing up is aqueous
Rate is not more than 150wt%.
3. drying preparation method according to a kind of revolution of inorganic particle water-retaining agent described in claim 1, which is characterized in that step
Rapid 4）In, in rotary dryer controlled at 360 DEG C ~ 800 DEG C.
4. the inorganic particle water-retaining agent made from any one of the claim 1-3 preparation methods.
5. application method of the inorganic particle water-retaining agent in mortar described in claim 4 is cementitious material in substitution mortar, volume
For 5wt% ~ 20wt% of total cementitious material.
6. application method of the inorganic particle water-retaining agent in concrete described in claim 4 is the gelling material replaced in concrete
Material, volume are 2wt% ~ 15wt% of total cementitious material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610565639.3A CN106220018B (en) | 2016-07-15 | 2016-07-15 | Revolution drying preparation method and the application of a kind of inorganic particle water-retaining agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610565639.3A CN106220018B (en) | 2016-07-15 | 2016-07-15 | Revolution drying preparation method and the application of a kind of inorganic particle water-retaining agent |
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| CN106220018A CN106220018A (en) | 2016-12-14 |
| CN106220018B true CN106220018B (en) | 2018-09-14 |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192881A (en) * | 2014-08-06 | 2014-12-10 | 华南理工大学 | Method for preparing multipurpose solid waste slag by using return sand and return stone and application of solid waste slag |
| CN104193202B (en) * | 2014-08-06 | 2016-04-13 | 华南理工大学 | A kind of high-moisture-retention cement |
| CN104190690B (en) * | 2014-08-06 | 2016-05-04 | 华南理工大学 | A kind of method and application that utilizes ammonia-soda process alkaline residue to prepare dechlorination alkaline residue mixture |
| CN105032903B (en) * | 2015-09-08 | 2017-04-12 | 华北理工大学 | Method for removing chloride ions in waste alkaline residues |
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