CN112758947A - Preparation method of kaolin with high oil absorption - Google Patents
Preparation method of kaolin with high oil absorption Download PDFInfo
- Publication number
- CN112758947A CN112758947A CN201911061555.6A CN201911061555A CN112758947A CN 112758947 A CN112758947 A CN 112758947A CN 201911061555 A CN201911061555 A CN 201911061555A CN 112758947 A CN112758947 A CN 112758947A
- Authority
- CN
- China
- Prior art keywords
- kaolin
- oil absorption
- catalyst
- high oil
- particles
- 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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
- C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
- C01B33/40—Clays
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/19—Oil-absorption capacity, e.g. DBP values
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a preparation method of kaolin with high oil absorption, belonging to the technical field of kaolin, and comprising the following steps: grinding the kaolin raw material; removing impurities from the ground kaolin raw material; adding a catalyst and a reinforcing agent into the high-collar soil particles after impurity removal; stirring and mixing evenly, and heating; dehydrating and collecting the heated product; by adopting the preparation method of the kaolin with high oil absorption, the catalyst is a liquid catalyst, the reinforcing agent is a reinforcing additive with strong hydrophobicity and lipophilicity, the reinforced kaolin has high oil absorption, and the kaolin has fine particles and can be added and applied to a plurality of aspects.
Description
Technical Field
The invention belongs to the technical field of kaolin, and particularly relates to a preparation method of kaolin with high oil absorption.
Background
Calcined kaolin is widely used in the thermal paper and industrial coating industries due to its unique crystal structure, developed voids and good oil absorption, however, the oil absorption of domestic calcined kaolin cannot meet the market demand. The technical development of the calcined kaolin in China is slow, the oil absorption of the kaolin which is not treated by a special process at present is generally between 55 and 65g/100g, and the production method for realizing high oil absorption individually only stays in the experimental stage and cannot realize industrial production. The oil absorption of the foreign calcined kaolin can reach 80-90g/100g, but the price is high and the supply period is long. Therefore, the method meets the huge market demand and realizes the industrial production of the calcined kaolin with high oil absorption.
Disclosure of Invention
The present invention is directed to a method for preparing kaolin with high oil absorption, which solves the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a preparation method of kaolin with high oil absorption comprises the following steps:
s1, grinding the kaolin raw material;
s2, removing impurities from the ground kaolin raw material;
s3, adding a catalyst and a reinforcing agent into the high-collar soil particles after impurity removal;
s4, stirring, mixing uniformly and heating;
and S5, dehydrating and collecting the heated product.
As a further preferable embodiment of the present invention: in step S1, the kaolin clay raw material is ground to particles smaller than 1000 mesh.
As a further preferable embodiment of the present invention: the step S2 of removing impurities comprises screening, wherein kaolin particles are screened according to the size of air volume by ventilating at the bottom of the particles.
As a further preferable embodiment of the present invention: in the step S3, the catalyst is a liquid catalyst, and the reinforcing agent is a reinforcing additive with strong hydrophobicity and strong lipophilicity.
As a further preferable embodiment of the present invention: and the dehydration process in the step S5 adopts centrifugal dehydration, and the inside of the centrifugal machine is placed for 2 to 3 hours at the rotating speed of 2000 r/min.
Compared with the prior art, the invention has the beneficial effects that: by adopting the preparation method of the kaolin with high oil absorption, the catalyst is a liquid catalyst, the reinforcing agent is a reinforcing additive with strong hydrophobicity and lipophilicity, the reinforced kaolin has high oil absorption, and the kaolin has fine particles and can be added and applied to a plurality of aspects.
Detailed Description
The present invention will be further described with reference to the following examples.
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are within the scope of the claimed invention.
The invention provides a preparation method of kaolin with high oil absorption, which comprises the following steps:
s1, grinding the kaolin raw material;
s2, removing impurities from the ground kaolin raw material;
s3, adding a catalyst and a reinforcing agent into the high-collar soil particles after impurity removal;
s4, stirring, mixing uniformly and heating;
and S5, dehydrating and collecting the heated product.
Specifically, in step S1, the kaolin clay raw material is ground into particles smaller than 1000 mesh.
Specifically, the step S2 of removing impurities includes screening, in which kaolin particles are screened according to the size of the air flow by ventilating at the bottom of the particles.
Specifically, in step S3, the catalyst is a liquid catalyst, and the enhancer is an enhancing additive with strong hydrophobicity and strong lipophilicity.
Specifically, the dehydration process in the step S5 adopts centrifugal dehydration, and the inside of the centrifuge is placed for 2 to 3 hours at the rotating speed of 2000 r/min.
By adopting the preparation method of the kaolin with high oil absorption, the catalyst is a liquid catalyst, the reinforcing agent is a reinforcing additive with strong hydrophobicity and lipophilicity, the reinforced kaolin has high oil absorption, and the kaolin has fine particles and can be added and applied to a plurality of aspects.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The preparation method of the kaolin with high oil absorption is characterized by comprising the following steps:
s1, grinding the kaolin raw material;
s2, removing impurities from the ground kaolin raw material;
s3, adding a catalyst and a reinforcing agent into the high-collar soil particles after impurity removal;
s4, stirring, mixing uniformly and heating;
and S5, dehydrating and collecting the heated product.
2. The method of claim 1, wherein in step S1, the kaolin is ground to particles smaller than 1000 mesh.
3. The method of claim 1, wherein the step S2 of removing impurities comprises screening, wherein the screening of kaolin particles is performed according to the size of air flow by ventilating at the bottom of the particles.
4. The method of claim 1, wherein the catalyst in step S3 is a liquid catalyst, and the enhancing agent is a highly hydrophobic and lipophilic enhancing additive.
5. The method according to claim 1, wherein the dehydration process in step S5 is centrifugal dehydration, and the kaolin is placed in a centrifuge for 2-3h at a rotation speed of 2000 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911061555.6A CN112758947A (en) | 2019-11-01 | 2019-11-01 | Preparation method of kaolin with high oil absorption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911061555.6A CN112758947A (en) | 2019-11-01 | 2019-11-01 | Preparation method of kaolin with high oil absorption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112758947A true CN112758947A (en) | 2021-05-07 |
Family
ID=75692193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911061555.6A Pending CN112758947A (en) | 2019-11-01 | 2019-11-01 | Preparation method of kaolin with high oil absorption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112758947A (en) |
-
2019
- 2019-11-01 CN CN201911061555.6A patent/CN112758947A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210507 |