CN115974093A - Preparation method of modified bentonite material - Google Patents
Preparation method of modified bentonite material Download PDFInfo
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- CN115974093A CN115974093A CN202211151362.1A CN202211151362A CN115974093A CN 115974093 A CN115974093 A CN 115974093A CN 202211151362 A CN202211151362 A CN 202211151362A CN 115974093 A CN115974093 A CN 115974093A
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- bentonite
- calcium
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- sodium carbonate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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Abstract
The invention discloses a preparation method of a modified bentonite material. The preparation method of the modified bentonite material comprises the following steps: s1: adding calcium-based bentonite raw soil with the water content of 20-30% into a crusher for crushing, adding the crushed calcium-based bentonite into a sieving machine for sieving to obtain calcium-based bentonite powder; s2: adding the calcium-based bentonite powder obtained in the step S1 into a mixer, adding sodium carbonate powder, and mixing; s3: in the mixing process of the mixer, uniformly spraying water to the calcium-based bentonite and the sodium carbonate in the mixer through a spray head to obtain a mixture of the calcium-based bentonite and the sodium carbonate; s4: conveying the mixture obtained in the step (S3) to a heat preservation box for fermentation to obtain dry modified sodium bentonite soil blocks; s5: and (4) rolling the modified bentonite obtained in the step (S4) into powder and packaging. The preparation method of the modified bentonite material provided by the invention can shorten the fermentation time and improve the production efficiency.
Description
Technical Field
The invention relates to the technical field of bentonite material preparation, in particular to a preparation method of a modified bentonite material.
Background
Bentonite ore is a versatile mineral product whose quality and field of application depend mainly on the montmorillonite content and the type of properties and its crystal chemistry among others. Therefore, the development and utilization of the catalyst are different from one ore to another and from one action to another. For example, activated clay is produced, calcium base is converted into sodium base for well drilling and grouting of petroleum drilling, starch is replaced for slurry of spinning and printing and dyeing, interior and exterior wall coatings are used for building materials, organic bentonite is prepared, and the bentonite is used for synthesizing 4A zeolite and producing white carbon black and the like.
In the prior art, two preparation methods for converting calcium bentonite into sodium bentonite are mainly used, one is a wet modification method, the other is a dry modification method, the wet modification method is to add bentonite and soda ash into water, stir and ferment for about 10 days (excessive water evaporation is a main reason for influencing fermentation time), although high-quality modified bentonite can be obtained in the process, the water consumption is large, the fermentation time is long, and the production progress is influenced; the dry modification method is to directly mix and stir bentonite and soda ash, then extrude, ferment for 1-2 days, and grind into powder to obtain the modified bentonite, but the quality of the obtained modified bentonite is general although the production efficiency is high.
Therefore, it is necessary to provide a method for preparing modified bentonite, which solves the above technical problems.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the preparation method of the modified bentonite material, which can shorten the fermentation time and improve the production efficiency.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the preparation method of the modified bentonite material comprises the following steps: s1: adding calcium-based bentonite raw soil with the water content of 20-30% into a crusher for crushing, adding the crushed calcium-based bentonite into a sieving machine for sieving to obtain calcium-based bentonite powder; s2: adding the calcium-based bentonite powder obtained in the step S1 into a mixer, adding sodium carbonate powder, and mixing; s3: in the mixing process of the mixer, uniformly spraying water to the calcium-based bentonite and the sodium carbonate in the mixer through a spray head to obtain a mixture of the calcium-based bentonite and the sodium carbonate; s4: conveying the mixture obtained in the step S3 to a heat preservation box for fermentation to obtain dry modified sodium bentonite blocks; s5: and (5) rolling the modified bentonite obtained in the step (S4) into powder and packaging.
Preferably, when the S1 medium sieve is used, the bentonite passes through a 100-mesh sieve.
Preferably, the addition ratio of the calcium bentonite to the sodium carbonate in the S2 is 25.
Preferably, the water spraying amount in the S3 is 20-30% of the weight of the calcium bentonite.
Preferably, the fermentation time in S4 is 2-3.
Preferably, in the S4, dry air with a temperature of 60 ℃ and a relative humidity of 20% is input into the heat preservation box during the fermentation process, so as to increase the fermentation temperature, so as to accelerate the evaporation of the water in the mixture.
Preferably, the incubator has means for absorbing moisture to ensure the air in the incubator is dry.
Compared with the prior art, the invention has the following beneficial effects:
(1) The method adopts a semi-dry method to realize the effect of converting the calcium bentonite into the calcium bentonite, and compared with the traditional wet modification method, the method has the advantages of shorter fermentation time, water saving, water cost saving to a certain extent and production efficiency improvement; compared with the traditional dry modification method, the quality of the modified bentonite is obviously improved.
Detailed Description
The present invention is further illustrated by the following description and examples, including but not limited to the following examples.
Example 1
The preparation method of the modified bentonite material provided by the invention comprises the following steps: adding 1000 kilograms of calcium-based bentonite raw soil with the water content of 20 percent into a crusher for crushing, adding the crushed calcium-based bentonite into a 100-mesh sieving machine for sieving to obtain calcium-based bentonite powder with fine particles; adding the calcium-based bentonite powder into a mixer, adding 40 kg of sodium carbonate powder, mixing, adding 3-4 times when adding the sodium carbonate powder instead of adding the sodium carbonate powder at one time, and spraying the calcium-based bentonite powder on the calcium-based bentonite powder in a uniform manner to uniformly mix the calcium-based bentonite powder with the sodium carbonate powder; in the process of mixing materials by the mixer, water is uniformly sprayed to calcium-based bentonite and sodium carbonate in the mixer through a spray head, the water spraying amount is 300 kilograms, a mixture of the calcium-based bentonite and the sodium carbonate is obtained, calcium ions and sodium ions are respectively dissociated after the calcium-based bentonite and the sodium carbonate meet water, so that the calcium ions and the carbonate ions are combined to generate calcium carbonate, the sodium ions replace the original positions of the calcium ions, the reaction just starts, the mixture is conveyed into a heat preservation box for fermentation reaction, dry air with the temperature of 60 ℃ and the relative humidity of 20 percent is input into the heat preservation box in the fermentation process, the fermentation temperature is increased, the dissociation of the calcium-based bentonite and the sodium carbonate ions is accelerated, more dissociated calcium ions and the carbonate ions are combined to generate the calcium carbonate, the evaporation of water in the mixture is accelerated in the high-temperature environment, the fermentation time is greatly shortened, the fermentation time is 2-3 days, and dry modified sodium-based bentonite blocks can be obtained; and then the modified sodium bentonite is ground into powder for packaging.
Example 2
Adding 1000 kilograms of calcium-based bentonite raw soil with 25 percent of water content into a crusher for crushing, adding the crushed calcium-based bentonite into a 100-mesh sieving machine for sieving to obtain calcium-based bentonite powder with fine particles; adding the calcium-based bentonite powder into a mixer, adding 40 kg of sodium carbonate powder, mixing, adding 3-4 times when adding the sodium carbonate powder instead of adding the sodium carbonate powder at one time, and spraying the calcium-based bentonite powder on the calcium-based bentonite powder in a uniform manner to uniformly mix the calcium-based bentonite powder with the sodium carbonate powder; in the process of mixing materials by the mixer, uniformly spraying water to calcium bentonite and sodium carbonate in the mixer through a spray head, wherein the water spraying amount is 250 kilograms, so that a mixture of the calcium bentonite and the sodium carbonate is obtained, calcium ions and sodium ions are respectively dissociated after the calcium bentonite and the sodium carbonate meet water, so that the calcium ions and the carbonate ions are combined to generate calcium carbonate, the sodium ions replace the original positions of the calcium ions, the reaction just starts, the mixture is conveyed into a heat preservation box for fermentation reaction, dry air with the temperature of 60 ℃ and the relative humidity of 20 percent is input into the heat preservation box in the fermentation process, the fermentation temperature is increased, the dissociation of the calcium ions and the sodium carbonate ions of the calcium bentonite is accelerated, more dissociated calcium ions and the carbonate ions are combined to generate the calcium carbonate, the evaporation of water in the mixture is accelerated in the high-temperature environment, the fermentation time is greatly shortened, the fermentation time is prolonged to be 2-3 days, and the dry modified sodium bentonite blocks can be obtained; and then the modified sodium bentonite is ground into powder for packaging.
Example 3
Adding 1000 kilograms of calcium-based bentonite raw soil with the water content of 30 percent into a crusher for crushing, adding the crushed calcium-based bentonite into a 100-mesh sieving machine for sieving to obtain calcium-based bentonite powder with fine particles; adding the calcium-based bentonite powder into a mixer, adding 40 kg of sodium carbonate powder, mixing, adding 3-4 times when adding the sodium carbonate powder instead of adding the sodium carbonate powder at one time, and spraying the calcium-based bentonite powder on the calcium-based bentonite powder in a uniform manner to uniformly mix the calcium-based bentonite powder with the sodium carbonate powder; in the process of mixing materials by the mixer, water is uniformly sprayed to calcium-based bentonite and sodium carbonate in the mixer through a spray head, the water spraying amount is 200 kilograms, a mixture of the calcium-based bentonite and the sodium carbonate is obtained, calcium ions and sodium ions are respectively dissociated after the calcium-based bentonite and the sodium carbonate meet water, so that the calcium ions and the carbonate ions are combined to generate calcium carbonate, the sodium ions replace the original positions of the calcium ions, the reaction just starts, the mixture is conveyed into a heat preservation box for fermentation reaction, dry air with the temperature of 60 ℃ and the relative humidity of 20 percent is input into the heat preservation box in the fermentation process, the fermentation temperature is increased, the dissociation of the calcium-based bentonite and the sodium carbonate ions is accelerated, more dissociated calcium ions and the carbonate ions are combined to generate the calcium carbonate, the evaporation of water in the mixture is accelerated in the high-temperature environment, the fermentation time is greatly shortened, the fermentation time is 2-3 days, and dry modified sodium-based bentonite blocks can be obtained; and then the modified sodium bentonite is ground into powder for packaging.
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the insubstantial modifications or changes made within the spirit and scope of the main design of the present invention, which still solve the technical problems consistent with the present invention, should be included in the scope of the present invention.
Claims (7)
1. The preparation method of the modified bentonite material is characterized by comprising the following steps:
s1: adding calcium-based bentonite raw soil with the water content of 20% -30% into a crusher to crush, adding the crushed calcium-based bentonite into a sieving machine to sieve, and obtaining calcium-based bentonite powder;
s2: adding the calcium bentonite powder obtained in the step S1 into a mixer, adding sodium carbonate powder, and mixing;
s3: in the mixing process of the mixer, uniformly spraying water to the calcium-based bentonite and the sodium carbonate in the mixer through a spray head to obtain a mixture of the calcium-based bentonite and the sodium carbonate;
s4: conveying the mixture obtained in the step (S3) to a heat preservation box for fermentation to obtain dry modified sodium bentonite soil blocks;
s5: and (5) rolling the modified bentonite obtained in the step (S4) into powder and packaging.
2. The method for preparing a modified bentonite material according to claim 1, wherein the bentonite passes through a 100-mesh screen when the S1 medium-mesh screen is screened.
3. The method for preparing a modified bentonite material according to claim 1, wherein the addition ratio of the calcium bentonite to the sodium carbonate in the S2 is 25.
4. The method for preparing a modified bentonite material according to claim 1, wherein the amount of water sprayed in S3 is 20-30% of the weight of the calcium bentonite.
5. The method of claim 1, wherein the fermentation time in S4 is 2-3.
6. The method for preparing a modified bentonite material according to claim 1, wherein in the S4, dry air with a temperature of 60 ℃ and a relative humidity of 20% is input into the incubator during the fermentation process, so that the fermentation temperature is increased to accelerate the evaporation of water in the mixture of the calcium bentonite and the sodium carbonate.
7. The method as claimed in claim 6, wherein the incubator contains means for absorbing moisture to keep the air dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211151362.1A CN115974093A (en) | 2022-09-21 | 2022-09-21 | Preparation method of modified bentonite material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211151362.1A CN115974093A (en) | 2022-09-21 | 2022-09-21 | Preparation method of modified bentonite material |
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| CN115974093A true CN115974093A (en) | 2023-04-18 |
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| CN202211151362.1A Pending CN115974093A (en) | 2022-09-21 | 2022-09-21 | Preparation method of modified bentonite material |
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- 2022-09-21 CN CN202211151362.1A patent/CN115974093A/en active Pending
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