CN104787775A - Method for surface modification of kaolinite clay with large aperture and fixed shape - Google Patents
Method for surface modification of kaolinite clay with large aperture and fixed shape Download PDFInfo
- Publication number
- CN104787775A CN104787775A CN201510180562.3A CN201510180562A CN104787775A CN 104787775 A CN104787775 A CN 104787775A CN 201510180562 A CN201510180562 A CN 201510180562A CN 104787775 A CN104787775 A CN 104787775A
- Authority
- CN
- China
- Prior art keywords
- kaolin
- solid form
- wide aperture
- modifying
- naoh solution
- 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.)
- Granted
Links
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
A method for the surface modification of kaolinite clay with a large aperture and a fixed shape comprises the following steps: first of all, conducting pretreatment on raw materials, roasting the kaolinite clays in a muffle furnace; dipping the particle of the kaolinite clay into an NaOH solution; stirring while the temperature is kept constant; carrying out centrifugal separation; washing with deionized water till the kaolinite clay is neutral; drying the modified kaolinite clay in a baking oven to obtain NaOH-activated kaolinite clay; then, adding the NaOH-activated kaolinite clay and aluminum powder at a certain ratio into ethyl alcohol; carrying out magnetic stirring for fully mixing; rapidly decompressing and filtering; eventually drying in the baking oven; pressing powder with a sheeter into thin sheets with the fixed shape; preparing an NaOH solution with a certain concentration; immersing the thin sheets with fixed shape into the NaOH solution; conducting elution on the thin sheets; finally, drying the thin sheets in the baking oven to obtain the kaolinite clay materials with the large aperture and the fixed shape.
Description
Technical field
The present invention relates to a kind of preparation method of Modification of kaolin, belong to kaolin surface study on the modification development field.
Background technology
China's kaolin resource is abundant, of a great variety, the particulate clay that kaolin to be a kind of with kandite be main component, quality are pure.Its raw ore outward appearance is in white, light gray isochrome, and in yellow, grey or rose isochrome time impure, compact mass or loose earthy, matter is soft, has soapy feeling, and hardness is less than nail.Density is 2.4 ~ 2.6g/cm
3, refractoriness is high, and can reach 1700 ~ 1790 DEG C, plasticity-is low, and cohesiveness is little, has good insulativity and chemical stability.Pure kaolin calcined rear color is pure white, and whiteness can reach 80% ~ 90%.The kaolinic chemical constitution of nature output is except SiO
2, Al
2o
3, H
2outside O tri-kinds of main components, also containing a small amount of Fe
2o
3, TiO
2, CaO, MgO, K
2o, Na
2o, P
2o
5, MnO
2deng oxide compound.
Nowadays many Application Areass all have particular requirement to kaolinic surface or interfacial property, in order to the requirement of satisfied application must carry out surface modification to it.Kaolinic surface modification: surface modification refers to and to process material surface by methods such as physics, chemistry, machineries, according to the physicochemical property needing point of destination change material surface of application, as surface composition, structure and functional group, surface energy, surface wettability, electrically, photosensitiveness, absorption and response characteristic etc., with the needs of satisfied modern novel material, novel process and development of new techniques.
Summary of the invention
The object of the present invention is to provide a kind of kaolin boring technique of aqueous etching metal, achieve low cost, functionalization, wide aperture, solid form kaolin surface method of modifying.
For achieving the above object, the technical solution used in the present invention is a kind of wide aperture, solid form kaolin surface method of modifying, and this invention comprises the following steps: this working of an invention step as shown in Figure 1.
1) raw materials pretreatment, by feed kaolin roasting in retort furnace;
2) by step 1) in kaolin carry out alkali modification, high territory particulate after roasting is immersed in NaOH solution, keep constant temperature stir.Centrifugation, deionized water rinsing is to neutral;
3) by step 2) in modified kaolin dry in an oven, obtain NaOH activation kaolin;
4) by step 3) in modified kaolin and aluminium powder add by a certain percentage in ethanol, magnetic agitation fully mixes, fast decompression filtration, last oven for drying;
5) by step 4) in powder tabletting machine be squeezed into solid form thin slice;
6) certain density NaOH solution is prepared;
7) by step 5) in solid form thin slice immerse in NaOH solution;
8) take out step 7) in thin slice carry out drip washing;
9) by step 8) in thin slice dry in an oven, obtain wide aperture, solid form kaolin material;
In step 1) described in kaolin starting material granularity be 300 orders; Maturing temperature is 1000 DEG C, and after roasting, kaolin specific surface becomes large, and porosity increases.
In step 2) in NaOH solution concentration be 6 ~ 8mol/L; Constant temperature 90 DEG C, magnetic agitation 8 ~ 12h; Described centrifugation adopts 4000r/min, time 5min, and centrifugation, deionized water rinsing are until neutrality.
In step 3) described in oven temperature be 80 DEG C, time 8 ~ 10h.
In step 4) described in aluminum powder particle size be 200 ~ 300 orders; Described kaolin and aluminium powder can 1:0.25 ~ 1:0.5 proportionings in mass ratio; Oven temperature 80 DEG C, time 2h.
In step 5) described in powder be the mixture of kaolin and aluminium powder, take a certain amount of mixed powder and carry out compressing tablet, sheet thickness about 2mm; Described tabletting machine pressure can be 20 ~ 30MPa.
In step 6) described in NaOH solution be 0.1mol/L or 0.2mol/L.
In step 7) described in thin slice in NaOH solution, keep 12 ~ 18h, until no longer include bubble produce.
In step 9) described in oven temperature be 80 DEG C, time 8 ~ 10h.
Accompanying drawing explanation
Fig. 1 is wide aperture, solid form kaolin surface method of modifying Making programme figure.
Embodiment
Embodiment 1
The kaolin final condition of a kind of wide aperture of the synthesis mentioned for summary of the invention, solid form, get 5g kaolin at 1000 DEG C of roasting 4h, roasting kaolin and 50mL concentration are the NaOH solution constant temperature 90 DEG C of 6mol/L, magnetic agitation 10h, with the centrifuge 5min of 4000r/min, deionization is washed, and continues centrifugal, repeat washing until pH is for neutral, get centrifugal substrate kaolin.80 DEG C of baking ovens keep 8h to obtain alkaline-modified kaolin.Getting alkaline-modified kaolin and aluminium powder mass ratio is that the powder of 1:0.25 adds abundant magnetic agitation in ethanol, and then fast decompression is filtered, and ensures to mix, then to get quality be that the mixed powder of 0.5g becomes solid form thin slice at 20MPa tableting under pressure.Solid form thin slice and 0.1mol/L sodium hydroxide solution react 12h, take out the washing of solid form thin slice deionized water, dry 8h, obtain wide aperture, solid form kaolin in 80 DEG C of baking ovens.
Embodiment 2
The kaolin final condition of a kind of wide aperture of the synthesis mentioned for summary of the invention, solid form, get 5g kaolin 1000 DEG C of roasting 4h, roasting kaolin and 50mL concentration are the NaOH solution constant temperature 90 DEG C of 6mol/L, magnetic agitation 10h, with the centrifuge 5min of 4000r/min, deionization is washed, and continues centrifugal, repeat washing until pH is for neutral, get centrifugal substrate kaolin.80 DEG C of baking ovens keep 8h to obtain alkaline-modified kaolin.Getting alkaline-modified kaolin and aluminium powder mass ratio is that the powder of 1:0.5 adds abundant magnetic agitation in ethanol, and then fast decompression is filtered, and ensures to mix, then to get quality be that the mixed powder of 0.5g becomes solid form thin slice at 20MPa tableting under pressure.Solid form thin slice and 0.1mol/L sodium hydroxide solution react 12h, take out the washing of solid form thin slice deionized water, dry 8h, obtain wide aperture, solid form kaolin in 80 DEG C of baking ovens.
Embodiment 3
The kaolin final condition of a kind of wide aperture of the synthesis mentioned for summary of the invention, solid form, get 5g kaolin 1000 DEG C of roasting 4h, roasting kaolin and 50mL concentration are the NaOH solution constant temperature 90 DEG C of 6mol/L, magnetic agitation 10h, with the centrifuge 5min of 4000r/min, deionization is washed, and continues centrifugal, repeat washing until pH is for neutral, get centrifugal substrate kaolin.80 DEG C of baking ovens keep 8h to obtain alkaline-modified kaolin.Getting alkaline-modified kaolin and aluminium powder mass ratio is that the powder of 1:0.25 pours abundant magnetic agitation in ethanol into, and then fast decompression is filtered, and ensures to mix, then to get quality be that the mixed powder of 0.5g becomes solid form thin slice at 25MPa tableting under pressure.Solid form thin slice and 0.1mol/L sodium hydroxide solution react 12h, take out the washing of solid form thin slice deionized water, dry 8h, obtain wide aperture, solid form kaolin in 80 DEG C of baking ovens.
Embodiment 4
The kaolin final condition of a kind of wide aperture of the synthesis mentioned for summary of the invention, solid form, get 5g kaolin 1000 DEG C of roasting 4h, roasting kaolin and 50mL concentration are the NaOH solution constant temperature 90 DEG C of 6mol/L, magnetic agitation 10h, with the centrifuge 5min of 4000r/min, deionization is washed, and continues centrifugal, repeat washing until pH is for neutral, get centrifugal substrate kaolin.80 DEG C of baking ovens keep 8h to obtain alkaline-modified kaolin.Getting alkaline-modified kaolin and aluminium powder mass ratio is that the powder of 1:0.5 adds abundant magnetic agitation in ethanol, and then fast decompression is filtered, and ensures to mix, then to get quality be that the mixed powder of 0.5g becomes solid form thin slice at 25MPa tableting under pressure.Solid form thin slice and 0.1mol/L sodium hydroxide solution react 12h, take out the washing of solid form thin slice deionized water, dry 8h, obtain wide aperture, solid form kaolin in 80 DEG C of baking ovens.
Claims (9)
1. wide aperture, a solid form kaolin surface method of modifying, is characterized in that: the method step comprises the following steps:
1) raw materials pretreatment, by feed kaolin roasting in retort furnace;
2) by step 1) in kaolin carry out alkali modification, high territory particulate after roasting is immersed in NaOH solution, keep constant temperature stir; Centrifugation, deionized water rinsing is to neutral;
3) by step 2) in modified kaolin dry in an oven, obtain NaOH activation kaolin;
4) by step 3) in modified kaolin and aluminium powder add by a certain percentage in ethanol, magnetic agitation fully mixes, fast decompression filtration, last oven for drying;
5) by step 4) in powder tabletting machine be squeezed into solid form thin slice;
6) certain density NaOH solution is prepared;
7) by step 5) in solid form thin slice immerse in NaOH solution;
8) take out step 7) in thin slice carry out drip washing;
9) by step 8) in thin slice dry in an oven, obtain wide aperture, solid form kaolin material.
2. a kind of wide aperture according to claim 1, solid form kaolin surface method of modifying, is characterized in that, in step 1) described in kaolin starting material granularity be 300 orders; Maturing temperature is 1000 DEG C, and after roasting, kaolin specific surface becomes large, and porosity increases.
3. a kind of wide aperture according to claim 1, solid form kaolin surface method of modifying, is characterized in that: in step 2) in NaOH solution concentration be 6 ~ 8mol/L; Constant temperature 90 DEG C, magnetic agitation 8 ~ 12h; Described centrifugation adopts 4000r/min, time 5min, and centrifugation, deionized water rinsing are until neutrality; .
4. a kind of wide aperture according to claim 1, solid form kaolin surface method of modifying, is characterized in that: in step 3) described in oven temperature be 80 DEG C, time 8 ~ 10h.
5. a kind of wide aperture according to claim 1, solid form kaolin surface method of modifying, is characterized in that: in step 4) described in aluminum powder particle size be 200 ~ 300 orders; Described kaolin and aluminium powder can 1:0.25 ~ 1:0.5 proportionings in mass ratio; Oven temperature 80 DEG C, time 2h.
6. a kind of wide aperture according to claim 1, solid form kaolin surface method of modifying, it is characterized in that: in step 5) described in powder be the mixture of kaolin and aluminium powder, take a certain amount of mixed powder and carry out compressing tablet, sheet thickness about 2mm; Described tabletting machine pressure can be 20 ~ 30MPa.
7. a kind of wide aperture according to claim 1, solid form kaolin surface method of modifying, is characterized in that: in step 6) described in NaOH solution be 0.1mol/L or 0.2mol/L.
8. a kind of wide aperture according to claim 1, solid form kaolin surface method of modifying, is characterized in that: in step 7) described in thin slice in NaOH solution, keep 12 ~ 18h, until no longer include bubble produce.
9. a kind of wide aperture according to claim 1, solid form kaolin surface method of modifying, is characterized in that: in step 9) described in oven temperature be 80 DEG C, time 8 ~ 10h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510180562.3A CN104787775B (en) | 2015-04-16 | 2015-04-16 | A kind of large aperture, solid form kaolin surface method of modifying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510180562.3A CN104787775B (en) | 2015-04-16 | 2015-04-16 | A kind of large aperture, solid form kaolin surface method of modifying |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104787775A true CN104787775A (en) | 2015-07-22 |
| CN104787775B CN104787775B (en) | 2016-08-17 |
Family
ID=53553029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510180562.3A Expired - Fee Related CN104787775B (en) | 2015-04-16 | 2015-04-16 | A kind of large aperture, solid form kaolin surface method of modifying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104787775B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906810A (en) * | 2017-02-27 | 2017-06-30 | 中国石油大学(华东) | A kind of removing handling process of marine oil spill |
| CN108890402A (en) * | 2018-06-12 | 2018-11-27 | 上海江南轧辊有限公司 | Wheel grinding cooling technique |
| CN109761241A (en) * | 2018-12-27 | 2019-05-17 | 济南大学 | A method of utilizing alkaline matter activated clays pore-creating |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4836913A (en) * | 1983-04-13 | 1989-06-06 | W. R. Grace & Co.-Conn. | Catalytic cracking process exploying a zeolite as catalysts and catalyst supports |
| CN1093694A (en) * | 1994-02-14 | 1994-10-19 | 广西壮族自治区建筑材料科学研究设计院 | Technology for calcining kaolin by using reduction method |
| CN102092724A (en) * | 2010-11-24 | 2011-06-15 | 湖南宝山高岭土科技开发有限公司 | Production method of modified kaolin |
| CN102188963A (en) * | 2010-03-10 | 2011-09-21 | 中国石油天然气股份有限公司 | Method for modifying kaolin |
-
2015
- 2015-04-16 CN CN201510180562.3A patent/CN104787775B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4836913A (en) * | 1983-04-13 | 1989-06-06 | W. R. Grace & Co.-Conn. | Catalytic cracking process exploying a zeolite as catalysts and catalyst supports |
| CN1093694A (en) * | 1994-02-14 | 1994-10-19 | 广西壮族自治区建筑材料科学研究设计院 | Technology for calcining kaolin by using reduction method |
| CN102188963A (en) * | 2010-03-10 | 2011-09-21 | 中国石油天然气股份有限公司 | Method for modifying kaolin |
| CN102092724A (en) * | 2010-11-24 | 2011-06-15 | 湖南宝山高岭土科技开发有限公司 | Production method of modified kaolin |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906810A (en) * | 2017-02-27 | 2017-06-30 | 中国石油大学(华东) | A kind of removing handling process of marine oil spill |
| CN108890402A (en) * | 2018-06-12 | 2018-11-27 | 上海江南轧辊有限公司 | Wheel grinding cooling technique |
| CN109761241A (en) * | 2018-12-27 | 2019-05-17 | 济南大学 | A method of utilizing alkaline matter activated clays pore-creating |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104787775B (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106185937B (en) | A kind of preparation method of carbon nano-particle/two-dimensional layer carbonization titanium composite material | |
| CN104557130B (en) | The preparation method of kaolinite soil matrix meso pore silicon oxide material | |
| CN107381524B (en) | The method and NaP molecular sieve of NaP molecular sieve are prepared using white clay as raw material | |
| CN101723397B (en) | Method for preparing zeolite molecular sieve by using oil shale residues | |
| CN104971709B (en) | Flower-shaped ZnO photocatalyst of Ce doping applied to dye wastewater treatment and preparation method thereof | |
| CN104787775A (en) | Method for surface modification of kaolinite clay with large aperture and fixed shape | |
| CN105254282B (en) | A kind of preparation method of building ceramics | |
| CN102351213A (en) | Method for preparing 3A type zeolite molecular sieve | |
| CN102167338B (en) | Technology for preparing hydrated sodium aluminosilicate by utilizing high-alumina coal gangue and fly ash alkali soluble desiliconization | |
| CN104986786A (en) | Sheet alpha-Al2O3 powder body with controllable particle diameter size and preparation method of sheet alpha-Al2O3 powder body | |
| CN102560172A (en) | Method for preparing dispersion-strengthened copper with high strength and high conductivity | |
| CN105129857A (en) | Flower-shaped tungsten oxide nanometer material and preparing method thereof | |
| CN103183372B (en) | A kind of template solid phase prepares the method for nano zine oxide | |
| CN104445411B (en) | A kind of preparation method of macrobead molybdic acid | |
| CN100469699C (en) | Method for the treatment of aluminum oxide powder | |
| CN101628812A (en) | Method for preparing compact yttria ceramics | |
| CN104630864A (en) | Hole-sealing method for magnesium alloy micro-arc oxidation coating | |
| CN104016708B (en) | A kind of preparation method of high breaking strength earthenware supporter | |
| CN100503901C (en) | Process for producing aluminum oxide crystal whisker | |
| CN105693265B (en) | A kind of method for preparing alumina oxide matrix porous ceramic membrane | |
| CN109732099B (en) | Preparation method of antioxidant micron copper | |
| CN101423224A (en) | Potassium borofluoride preparation method based on fluosilicic acid and boron rock | |
| CN103030926B (en) | A kind of preparation method of medium substrate | |
| CN102206847A (en) | Microarc oxidation/sol-gel compound treatment process for magnesium alloy | |
| CN105948071B (en) | A kind of method that mesoporous material is prepared using natural mordenite zeolite |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20210416 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |