CN106810087A - A kind of process of surface treatment of coal fly ash hollow micro bead - Google Patents
A kind of process of surface treatment of coal fly ash hollow micro bead Download PDFInfo
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- CN106810087A CN106810087A CN201510894011.3A CN201510894011A CN106810087A CN 106810087 A CN106810087 A CN 106810087A CN 201510894011 A CN201510894011 A CN 201510894011A CN 106810087 A CN106810087 A CN 106810087A
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- CN
- China
- Prior art keywords
- microballon
- fly ash
- coal fly
- hollow micro
- alcohol
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- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- 239000010881 fly ash Substances 0.000 title claims abstract description 25
- 239000003245 coal Substances 0.000 title claims abstract description 23
- 239000011325 microbead Substances 0.000 title claims abstract description 22
- 238000004381 surface treatment Methods 0.000 title claims abstract description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003513 alkali Substances 0.000 claims abstract description 21
- 238000010306 acid treatment Methods 0.000 claims abstract description 17
- 238000005406 washing Methods 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 238000002525 ultrasonication Methods 0.000 claims abstract description 11
- 238000013517 stratification Methods 0.000 claims abstract description 6
- 238000010790 dilution Methods 0.000 claims abstract description 4
- 239000012895 dilution Substances 0.000 claims abstract description 4
- 238000001556 precipitation Methods 0.000 claims abstract description 4
- 239000012487 rinsing solution Substances 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical group [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 25
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000000746 purification Methods 0.000 claims description 2
- 239000011324 bead Substances 0.000 abstract description 7
- 238000002604 ultrasonography Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 239000002956 ash Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 241000219991 Lythraceae Species 0.000 description 1
- 241000218211 Maclura Species 0.000 description 1
- 235000014360 Punica granatum Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- QXJJQWWVWRCVQT-UHFFFAOYSA-K calcium;sodium;phosphate Chemical compound [Na+].[Ca+2].[O-]P([O-])([O-])=O QXJJQWWVWRCVQT-UHFFFAOYSA-K 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052900 illite Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Surface Treatment Of Glass (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of process of surface treatment of coal fly ash hollow micro bead.The process of surface treatment is comprised the following steps：(1) carry out alcohol to microballon to wash, after stratification, reclaim the microballon of alcohol dilution bottom precipitation；(2) microballon after being washed to alcohol is washed, and after stratification, reclaims the microballon of rinsing solution top floating；(3) ultrasonication is carried out to the microballon after washing；(4) acid treatment is carried out to the microballon after ultrasonication, repeat step (2) after acid treatment；(5) alkali process are carried out to microballon, repeat step (2) after alkali process obtain being adapted for the lightweight microballon of coating.The present invention is washed using alcohol, washed, the means such as ultrasound is washed, acid treatment and alkali process are processed bead surface, sort out density in 0.7-1g/cm according to the formation feature of coal fly ash hollow micro bead3Suitable coating high-quality lightweight microballon, to improve the coating ability of subsequent material.
Description
Technical field
The present invention relates to a kind of process of surface treatment of coal fly ash hollow micro bead (referred to as " microballon "), belong to
Technical field of surface.
Background technology
Coal fly ash hollow micro bead is the microballon sorted out from flyash.Flyash is by variously-shaped difference
Big particle composition, when various particles are all that coal dust burns in boiler, the cooling of its ash fusion is formed.Powder
The main chemical compositions of coal ash hollow float bead are silica and aluminum oxide, respectively 60% and 30% or so.
Coal fly ash hollow micro bead.It is mainly kaolinite and illite in coal measures clay mineral, in 550
DEG C or so just dehydration exhaust, be mutually changed into amorphous phase from monoclinic system, because of expanded exhaust, quality becomes loose
It is porous, from 1000-1300 DEG C gradually fusion and decomposition form the paragenetic association of mullite and quartz glass, such as this
When acted on by chilling, the spongy glass of mullite containing volume emblem crystalline substance is just formed, when temperature is raised to 1400 DEG C
During left and right, irregular sponge particles are first passivated, then melt surface since the point thin section such as corner angle position
By including the air seal in hole, as temperature is raised, the particle of melting is turned into ball by effect of surface tension
Shape, forms three-bristle cudrania pomegranate shape, the structure such as emblem orifice ring shelly and hollow ball shell, and it is hollow glass spheres that at this moment cooling becomes.
Have other impurity substances in combustion due to flyash, microballon is easily bonded at high temperature
Surface so that microballon it is in irregular shape, simultaneously because microballon does not have strict control in developmental process
Causing the physical characteristics such as its density has very big difference.
It is cheap because microballon is the byproduct of power plant, it is at present to be used as refractory material or inserts more
Based on, also there are some scholars to have studied the material for utilizing it as coating, the side being surface-treated at present
Fado is that these methods can not be well to its surface adhesion using conventional single acid treatment or alkali process
Little particle is processed, while also without selectivity well.
The content of the invention
Based on this, it is an object of the invention to provide a kind of process of surface treatment of coal fly ash hollow micro bead.
To achieve the above object, the present invention uses following technical scheme：
A kind of process of surface treatment of coal fly ash hollow micro bead, comprises the following steps：
(1) carry out alcohol to microballon to wash, after stratification, reclaim the microballon of alcohol dilution bottom precipitation；
(2) microballon after being washed to alcohol is washed, and after stratification, reclaims the micro- of rinsing solution top floating
Pearl；
(3) ultrasonication is carried out to the microballon after washing；
(4) acid treatment is carried out to the microballon after ultrasonication, repeat step (2) after acid treatment；
(5) alkali process are carried out to microballon, repeat step (2) after alkali process obtain being adapted for coating use
Lightweight microballon.
Cardinal principle of the invention is：Washed using alcohol in step (1) and cleaned organic matter, while choosing
Go out density more than 0.7-0.8g/cm3Microballon；The ash content of part adhesion is cleaned by step (2), while choosing
Go out density less than 1.0g/cm3Microballon；It is cleaned by ultrasonic to fall to stick to small of bead surface by step (3)
Grain separates the microballon being sticked together；By step (4) and step (5) such that bead surface is formed
Small defect, is beneficial to follow-up coating procedure.
In the present invention, coal fly ash hollow micro bead used is the microballon of generation in power plant's production process, its grain
Degree scope is 30-200 μm.
In the step (1), alcohol washes temperature for 20-30 DEG C, and alcohol washes time 10-60min, stirring intensity
200-800rpm。
In the step (2), washing temperature is 20-30 DEG C, and washing time is 5-60min, stirring intensity
It is 200-800rpm.
In the step (3), ultrasonication temperature is 20-30 DEG C, and ultrasonic time is 5-15min, is surpassed
Sound intensity is 20-80KHZ.
In the step (4), acid treatment temperature is 20-30 DEG C, and stirring intensity is 200-800rpm, acid
Process time is 5-20min.
In the step (5), its alkali purification temp is 20-30 DEG C, and stirring intensity is 200-800rpm, alkali
Process time is 5-20min.
In the present invention, alcohol used is methyl alcohol or ethanol, and acidizer used is sulfuric acid or hydrochloric acid, institute
Alkali process agent is the mixed solution of NaOH and sodium carbonate.Wherein, the concentration of sulfuric acid is 1-5mol/L；
The concentration of hydrochloric acid is 1-5mol/L；The concentration of NaOH is in the mixed solution of NaOH and sodium carbonate
2-5mol/L, the concentration of sodium carbonate is 2-5mol/L.
The advantage of the invention is that：
The present invention according to the formation feature of coal fly ash hollow micro bead, washed using alcohol, washed, ultrasound is washed, at acid
The means such as reason and alkali process are processed bead surface, sort out density in 0.7-1g/cm3Suitable coating use
High-quality lightweight microballon, to improve the coating ability of subsequent material.
Brief description of the drawings
Fig. 1 is process chart of the invention.
Fig. 2 schemes for the SEM of the microballon in embodiment 1 without surface treatment.
Fig. 3 is the SEM figures of the microballon after being surface-treated in embodiment 1.
Specific embodiment
Below according to drawings and Examples, the present invention will be further described, but embodiments of the present invention are not limited
In this.
As shown in figure 1, being process chart of the invention, coal fly ash hollow micro bead sequentially passes through alcohol and washes → water
Wash → ultrasound washes → means such as acid treatment → washing → alkali process → washing obtain the microballon that suitable surface coats.
Embodiment 1
By taking the surface treatment of a collection of coal fly ash hollow micro bead as an example, concrete operation step is as follows：
(1) alcohol is washed
Alcohol is carried out to microballon to wash, temperature is 25 DEG C, and alcohol washes time 30min, stirring intensity 500rpm, stand
After 5min layerings, the microballon of alcohol dilution bottom precipitation is recovered by filtration；
(2) wash
Microballon after being washed to alcohol is washed, and temperature is 25 DEG C, washing time 15min, stirring intensity 500rpm,
It is layered after standing 5min, the microballon of rinsing solution top floating is recovered by filtration；
(3) ultrasonication
Ultrasonication is carried out to the microballon after washing, temperature is 25 DEG C, and ultrasonic time 10min, ultrasound is strong
Degree 40KHZ, is recovered by filtration the microballon of top floating；
(4) acid treatment
Acid treatment is carried out to the microballon after ultrasonication, concentration of hydrochloric acid is 2.5mol/L, and temperature is 25 DEG C,
Stirring intensity 500rpm, the acid treatment time is 15min, and the laggard water-filling of acid treatment is washed, and washes the alkali lye of remnants off,
Washing temperature is 25 DEG C, washing time 15min, stirring intensity 500rpm, is layered after standing 5min, mistake
Microballon is reclaimed in filter；
(5) alkali process
Alkali process are carried out to the microballon after acid treatment, concentration of sodium hydroxide solution is 3mol/L, sodium carbonate liquor
Concentration is 3mol/L, and temperature is 25 DEG C, and stirring intensity 500rpm, the acid treatment time is 15min, alkali process
Laggard water-filling is washed, and washes the alkali lye of remnants off, and washing temperature is 25 DEG C, washing time 15min, stirring intensity
500rpm, is layered after standing 5min, and microballon is recovered by filtration.
As shown in Fig. 2 adhering to substantial amounts of impurity substances, the shape of microballon without the bead surface of surface treatment
Shape is irregular, is not suitable for surface coating.As shown in figure 3, the bead surface after surface treated is smooth,
Regular shape, is suitable for surface coating.
Claims (9)
1. a kind of process of surface treatment of coal fly ash hollow micro bead, it is characterised in that comprise the following steps：
(1) carry out alcohol to microballon to wash, after stratification, reclaim the microballon of alcohol dilution bottom precipitation；
(2) microballon after being washed to alcohol is washed, and after stratification, reclaims the micro- of rinsing solution top floating
Pearl；
(3) ultrasonication is carried out to the microballon after washing；
(4) acid treatment is carried out to the microballon after ultrasonication, repeat step (2) after acid treatment；
(5) alkali process are carried out to microballon, repeat step (2) after alkali process obtain being adapted for coating use
Lightweight microballon.
2. the process of surface treatment of coal fly ash hollow micro bead according to claim 1, it is characterised in that
Coal fly ash hollow micro bead used is the microballon of generation in power plant's production process, and its particle size range is 30-200 μm.
3. the process of surface treatment of coal fly ash hollow micro bead according to claim 1 and 2, its feature exists
In in the step (1), it is 20-30 DEG C that alcohol washes temperature, and alcohol washes the time for 10-60min, and stirring is strong
It is 200-800rpm to spend.
4. the process of surface treatment of coal fly ash hollow micro bead according to claim 1 and 2, its feature exists
In in the step (2), washing temperature is 20-30 DEG C, and washing time is 5-60min, stirring intensity
It is 200-800rpm.
5. the process of surface treatment of coal fly ash hollow micro bead according to claim 1 and 2, its feature exists
In in the step (3), ultrasonication temperature is 20-30 DEG C, and ultrasonic time is 5-15min, is surpassed
Sound intensity is 20-80KHZ.
6. the process of surface treatment of coal fly ash hollow micro bead according to claim 1 and 2, its feature exists
In in the step (4), acid treatment temperature is 20-30 DEG C, and stirring intensity is 200-800rpm, acid
Process time is 5-20min.
7. the process of surface treatment of coal fly ash hollow micro bead according to claim 1 and 2, its feature exists
In in the step (5), its alkali purification temp is 20-30 DEG C, and stirring intensity is 200-800rpm, alkali
Process time is 5-20min.
8. the process of surface treatment of coal fly ash hollow micro bead according to claim 1 and 2, its feature exists
In alcohol used is methyl alcohol or ethanol, and acidizer used is sulfuric acid or hydrochloric acid, alkali process agent used
It is NaOH and the mixed solution of sodium carbonate.
9. technique as claimed in claim 8, it is characterised in that the concentration of the sulfuric acid is 1-5mol/L；
The concentration of the hydrochloric acid is 1-5mol/L；The concentration of NaOH in the mixed solution of NaOH and sodium carbonate
It is 2-5mol/L, the concentration of sodium carbonate is 2-5mol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510894011.3A CN106810087B (en) | 2015-11-30 | 2015-11-30 | A kind of process of surface treatment of coal fly ash hollow micro bead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510894011.3A CN106810087B (en) | 2015-11-30 | 2015-11-30 | A kind of process of surface treatment of coal fly ash hollow micro bead |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106810087A true CN106810087A (en) | 2017-06-09 |
| CN106810087B CN106810087B (en) | 2019-07-16 |
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| CN201510894011.3A Expired - Fee Related CN106810087B (en) | 2015-11-30 | 2015-11-30 | A kind of process of surface treatment of coal fly ash hollow micro bead |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114989679A (en) * | 2022-05-05 | 2022-09-02 | 安徽盛城新型材料有限公司 | Preparation method of colorful stone-like coating for exterior wall |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1435453A (en) * | 2002-01-31 | 2003-08-13 | 刘承晖 | Hollow microbead filling paint and producing process thereof |
| CN102850825A (en) * | 2012-09-11 | 2013-01-02 | 安徽理工大学 | Method and application for carrying out fly ash floating bead surface modification by using compound coupling agent |
| CN104310787A (en) * | 2014-09-28 | 2015-01-28 | 中国建材国际工程集团有限公司 | Preparation method of fly ash artificial hollow floating beads |
-
2015
- 2015-11-30 CN CN201510894011.3A patent/CN106810087B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1435453A (en) * | 2002-01-31 | 2003-08-13 | 刘承晖 | Hollow microbead filling paint and producing process thereof |
| CN102850825A (en) * | 2012-09-11 | 2013-01-02 | 安徽理工大学 | Method and application for carrying out fly ash floating bead surface modification by using compound coupling agent |
| CN104310787A (en) * | 2014-09-28 | 2015-01-28 | 中国建材国际工程集团有限公司 | Preparation method of fly ash artificial hollow floating beads |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114989679A (en) * | 2022-05-05 | 2022-09-02 | 安徽盛城新型材料有限公司 | Preparation method of colorful stone-like coating for exterior wall |
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