CN112791694A - Bentonite-based water-absorbing material and preparation method thereof - Google Patents
Bentonite-based water-absorbing material and preparation method thereof Download PDFInfo
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- CN112791694A CN112791694A CN201911114848.6A CN201911114848A CN112791694A CN 112791694 A CN112791694 A CN 112791694A CN 201911114848 A CN201911114848 A CN 201911114848A CN 112791694 A CN112791694 A CN 112791694A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28016—Particle form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J39/00—Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
- B01J39/08—Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
- B01J39/14—Base exchange silicates, e.g. zeolites
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Abstract
A bentonite-based water-absorbing material and a preparation method thereof are disclosed, wherein the water-absorbing material comprises the following components in parts by weight: 70-80 parts of bentonite powder, 35-45 parts of tourmaline powder, 35-45 parts of nano TiO2 powder, 30-45 parts of hydroxyapatite powder, 20-25 parts of bamboo charcoal powder, 10-25 parts of microcrystalline cellulose, 25-35 parts of magnesium oxide powder, 2-3 parts of pigment, 20-25 parts of water and 50-55 parts of glycerol. The water-absorbing material disclosed by the invention is uniform in particle, strong in water-absorbing capacity and strong in freeze-thaw resistance.
Description
Technical Field
The invention belongs to the technical field of preparation of water-absorbing materials, and particularly relates to a bentonite-based water-absorbing material and a preparation method thereof.
Background
Bentonite is a kind of clay rock, also called montmorillonite, which has very strong hygroscopicity (can absorb 8-20 times of its own volume of water and swell to 30 times), can be dispersed in water medium to form colloidal suspension, and has certain viscosity, thixotropy and lubricity, and its admixture with silt, etc. has plasticity and cohesiveness, and has strong cation exchange capacity and adsorption capacity. At present, common water-absorbing materials have uneven particles, insufficient water-absorbing capacity and poor freeze-thaw resistance.
Disclosure of Invention
The invention aims to provide a bentonite-based water absorbent material and a preparation method thereof, so as to solve the problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a bentonite-based water absorbing material comprises the following components in parts by weight: 70-80 parts of bentonite powder, 35-45 parts of tourmaline powder and nano TiO235-45 parts of powder, 30-45 parts of hydroxyapatite powder, 20-25 parts of bamboo charcoal powder, 10-25 parts of microcrystalline cellulose, 25-35 parts of magnesia powder, 2-3 parts of pigment, 20-25 parts of water and 50-55 parts of glycerol.
Furthermore, the particle sizes of the bentonite powder and the tourmaline powder are 240 meshes.
Furthermore, the particle sizes of the nano TiO2 powder, the hydroxyapatite powder, the bamboo charcoal powder and the magnesium oxide powder are all 120 meshes.
Further, the preparation method of the bentonite-based water absorbent material comprises the following steps:
step 1, preparing bentonite suspension from 70-80 parts of bentonite powder and 120-150 parts of ultrapure water, uniformly stirring on a magnetic stirrer, then weighing anhydrous sodium carbonate, adding the anhydrous sodium carbonate into the bentonite suspension to prepare 20% slurry, putting the slurry into a water bath kettle for heating and stirring reaction, then centrifugally washing, drying, roasting at high temperature, and putting the roasted product into a ball mill for grinding and crushing to obtain modified bentonite powder;
step 2, placing the modified bentonite powder obtained in the step 1 into a reaction kettle, adding 35-45 parts of tourmaline powder, 35-45 parts of nano TiO2 powder, 30-45 parts of hydroxyapatite powder and 20-25 parts of bamboo charcoal powder, adding 50-55 parts of glycerol, stirring and mixing uniformly, standing after oil bath, pouring out supernatant, cleaning with ultrapure water, drying, and then placing into a ball mill for grinding to prepare the nano composite material;
step 3, adding 2-3 parts of pigment into the nano composite material prepared in the step 2, uniformly stirring and mixing, adding 20-25 parts of water, and placing in a granulator to prepare granules;
and 4, drying the particles prepared in the step 3 in an oven at the temperature of 80-90 ℃, screening after drying, and removing the particles with the particle size not meeting the standard to obtain the bentonite-based water absorbent material.
Further, in the step 1, the heating temperature in the water bath is 80-90 ℃, the stirring speed is 25-50 r/min, and the stirring time is 80-100 min; the roasting temperature is 200-300 ℃.
Further, the oil bath is as follows: raising the temperature to 250-300 ℃ to carry out oil bath reaction for 1.5-2.0 h, and stirring once every 0.5 h.
Compared with the prior art, the invention has the following technical effects:
the water-absorbing material has uniform particles, strong water-absorbing capacity and strong freeze-thaw resistance;
the invention has the advantages of rich raw material sources, green and safe property, wide application, long service life, improvement of soil structure and increase of soil permeability.
Detailed Description
The invention is further illustrated below:
a bentonite-based water absorbing material comprises the following components in parts by weight: 70-80 parts of bentonite powder, 35-45 parts of tourmaline powder and nano TiO235-45 parts of powder, 30-45 parts of hydroxyapatite powder, 20-25 parts of bamboo charcoal powder, 10-25 parts of microcrystalline cellulose, 25-35 parts of magnesia powder, 2-3 parts of pigment, 20-25 parts of water and 50-55 parts of glycerol.
The particle sizes of the bentonite powder and the tourmaline powder are 240 meshes.
The particle sizes of the nano TiO2 powder, the hydroxyapatite powder, the bamboo charcoal powder and the magnesium oxide powder are all 120 meshes.
A preparation method of a bentonite-based water absorbent material comprises the following steps:
step 1, preparing bentonite suspension from 70-80 parts of bentonite powder and 120-150 parts of ultrapure water, uniformly stirring on a magnetic stirrer, then weighing anhydrous sodium carbonate, adding the anhydrous sodium carbonate into the bentonite suspension to prepare 20% slurry, putting the slurry into a water bath kettle for heating and stirring reaction, then centrifugally washing, drying, roasting at high temperature, and putting the roasted product into a ball mill for grinding and crushing to obtain modified bentonite powder;
step 2, placing the modified bentonite powder obtained in the step 1 into a reaction kettle, adding 35-45 parts of tourmaline powder, 35-45 parts of nano TiO2 powder, 30-45 parts of hydroxyapatite powder and 20-25 parts of bamboo charcoal powder, adding 50-55 parts of glycerol, stirring and mixing uniformly, standing after oil bath, pouring out supernatant, cleaning with ultrapure water, drying, and then placing into a ball mill for grinding to prepare the nano composite material;
step 3, adding 2-3 parts of pigment into the nano composite material prepared in the step 2, uniformly stirring and mixing, adding 20-25 parts of water, and placing in a granulator to prepare granules;
and 4, drying the particles prepared in the step 3 in an oven at the temperature of 80-90 ℃, screening after drying, and removing the particles with the particle size not meeting the standard to obtain the bentonite-based water absorbent material.
In the step 1, the heating temperature in a water bath is 80-90 ℃, the stirring speed is 25-50 r/min, and the stirring time is 80-100 min; the roasting temperature is 200-300 ℃.
The oil bath is as follows: raising the temperature to 250-300 ℃ to carry out oil bath reaction for 1.5-2.0 h, and stirring once every 0.5 h.
Example 1
Preparing bentonite suspension from 78 parts of bentonite powder and 120 parts of ultrapure water, uniformly stirring on a magnetic stirrer, then weighing anhydrous sodium carbonate, adding the anhydrous sodium carbonate into the bentonite suspension to prepare 20% slurry, putting the slurry into a water bath kettle for heating and stirring reaction, wherein the heating temperature is 76 ℃, the stirring speed is 20r/min, the stirring time is 85min, centrifugally washing, drying, roasting at high temperature, the roasting temperature is 250 ℃, putting the roasted product into a ball mill for grinding and crushing to obtain the modified bentonite powder.
Putting modified bentonite powder into a reaction kettle, adding 45 parts of tourmaline powder, 42 parts of nano TiO2 powder, 35 parts of hydroxyapatite powder and 25 parts of bamboo charcoal powder, adding 53 parts of glycerol, stirring and mixing uniformly, raising the temperature to 270 ℃, carrying out oil bath reaction for 1.8h, stirring once every 0.5h, standing after oil bath, pouring out supernatant, cleaning with ultrapure water, drying, and then putting into a ball mill for grinding to prepare the nano composite material.
Mixing materials: taking 2 parts of pigment, mixed powder and the nano composite material, stirring uniformly, mixing, adding 24 parts of water, and placing in a granulator to prepare granules with the particle size of 4mm and the length of 8 mm;
and drying the prepared particles in an oven at the temperature of 80 ℃, sieving and screening after drying, and removing particles with the particle size not meeting the standard to obtain the water absorbing material.
Example 2
Modifying bentonite: preparing bentonite suspension from 70 parts of bentonite powder and 150 parts of ultrapure water, uniformly stirring on a magnetic stirrer, then weighing anhydrous sodium carbonate, adding the anhydrous sodium carbonate into the bentonite suspension to prepare 20% slurry, putting the slurry into a water bath kettle for heating and stirring reaction, wherein the heating temperature is 78 ℃, the stirring speed is 25r/min, the stirring time is 60min, centrifugally washing, drying, roasting at high temperature, the roasting temperature is 200 ℃, putting the roasted product into a ball mill for grinding and crushing to obtain the modified bentonite powder.
Putting modified bentonite powder into a reaction kettle, adding 35 parts of tourmaline powder, 45 parts of nano TiO2 powder, 38 parts of hydroxyapatite powder and 24 parts of bamboo charcoal powder, adding 51 parts of glycerol, stirring and mixing uniformly, raising the temperature to 300 ℃, carrying out oil bath reaction for 2.0h, stirring once every 0.5h, standing after oil bath, pouring out supernatant, cleaning with ultrapure water, drying, and then putting into a ball mill for grinding to prepare the nano composite material.
Taking 2.5 parts of pigment and the nano composite material, stirring uniformly, mixing, adding 20 parts of water, and placing in a granulator to prepare granules with the particle size of 5mm and the length of 6 mm;
and drying the prepared particles in an oven at the temperature of 90 ℃, sieving and screening after drying, and removing particles with the particle size not meeting the standard to obtain the water absorbing material.
Claims (6)
1. The bentonite-based water absorbing material is characterized by comprising the following components in parts by weight: 70-80 parts of bentonite powder, 35-45 parts of tourmaline powder and nano TiO235-45 parts of powder, 30-45 parts of hydroxyapatite powder and 20 parts of bamboo charcoal powder25 parts of microcrystalline cellulose, 10-25 parts of magnesium oxide powder, 25-35 parts of pigment, 20-25 parts of water and 50-55 parts of glycerol.
2. The bentonite-based water absorbent material as set forth in claim 1, wherein the particle sizes of the bentonite powder and the tourmaline powder are 240 meshes.
3. The bentonite-based water absorbent material as claimed in claim 1, wherein the nano TiO2 powder, hydroxyapatite powder, bamboo charcoal powder and magnesium oxide powder have particle sizes of 120 meshes.
4. A method for preparing a bentonite-based water absorbent material, which is based on the bentonite-based water absorbent material of any one of claims 1 to 3, comprising the steps of:
step 1, preparing bentonite suspension from 70-80 parts of bentonite powder and 120-150 parts of ultrapure water, uniformly stirring on a magnetic stirrer, then weighing anhydrous sodium carbonate, adding the anhydrous sodium carbonate into the bentonite suspension to prepare 20% slurry, putting the slurry into a water bath kettle for heating and stirring reaction, then centrifugally washing, drying, roasting at high temperature, and putting the roasted product into a ball mill for grinding and crushing to obtain modified bentonite powder;
step 2, placing the modified bentonite powder obtained in the step 1 into a reaction kettle, adding 35-45 parts of tourmaline powder, 35-45 parts of nano TiO2 powder, 30-45 parts of hydroxyapatite powder and 20-25 parts of bamboo charcoal powder, adding 50-55 parts of glycerol, stirring and mixing uniformly, standing after oil bath, pouring out supernatant, cleaning with ultrapure water, drying, and then placing into a ball mill for grinding to prepare the nano composite material;
step 3, adding 2-3 parts of pigment into the nano composite material prepared in the step 2, uniformly stirring and mixing, adding 20-25 parts of water, and placing in a granulator to prepare granules;
and 4, drying the particles prepared in the step 3 in an oven at the temperature of 80-90 ℃, screening after drying, and removing the particles with the particle size not meeting the standard to obtain the bentonite-based water absorbent material.
5. The preparation method of the bentonite-based water absorbent material according to claim 4, wherein in the step 1, the heating temperature in the water bath is 80-90 ℃, the stirring speed is 25-50 r/min, and the stirring time is 80-100 min; the roasting temperature is 200-300 ℃.
6. The method for preparing a bentonite-based water absorbent material as claimed in claim 4, wherein the oil bath is: raising the temperature to 250-300 ℃ to carry out oil bath reaction for 1.5-2.0 h, and stirring once every 0.5 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911114848.6A CN112791694A (en) | 2019-11-14 | 2019-11-14 | Bentonite-based water-absorbing material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911114848.6A CN112791694A (en) | 2019-11-14 | 2019-11-14 | Bentonite-based water-absorbing material and preparation method thereof |
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| CN112791694A true CN112791694A (en) | 2021-05-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113429624A (en) * | 2021-07-05 | 2021-09-24 | 句容康泰膨润土有限公司 | Polymer modified bentonite and preparation process thereof |
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2019
- 2019-11-14 CN CN201911114848.6A patent/CN112791694A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113429624A (en) * | 2021-07-05 | 2021-09-24 | 句容康泰膨润土有限公司 | Polymer modified bentonite and preparation process thereof |
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Application publication date: 20210514 |