CN115650627A - Preparation method and application of superfine expanding agent - Google Patents
Preparation method and application of superfine expanding agent Download PDFInfo
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- CN115650627A CN115650627A CN202211294681.8A CN202211294681A CN115650627A CN 115650627 A CN115650627 A CN 115650627A CN 202211294681 A CN202211294681 A CN 202211294681A CN 115650627 A CN115650627 A CN 115650627A
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- stirring
- baking
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- expanding agent
- alcohol
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- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000003566 sealing material Substances 0.000 claims abstract description 47
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- 238000003756 stirring Methods 0.000 claims abstract description 31
- 235000011837 pasties Nutrition 0.000 claims abstract description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000843 powder Substances 0.000 claims abstract description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000002002 slurry Substances 0.000 claims abstract description 10
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 5
- 239000000292 calcium oxide Substances 0.000 claims abstract description 5
- 239000005711 Benzoic acid Substances 0.000 claims abstract description 4
- 235000010233 benzoic acid Nutrition 0.000 claims abstract description 4
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000012216 screening Methods 0.000 claims abstract description 4
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims abstract description 4
- 239000003245 coal Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 238000010298 pulverizing process Methods 0.000 claims description 4
- 238000007790 scraping Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 229940023462 paste product Drugs 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 11
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 10
- 239000011575 calcium Substances 0.000 description 10
- 229910052791 calcium Inorganic materials 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 239000004568 cement Substances 0.000 description 4
- 239000011398 Portland cement Substances 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002872 contrast media Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000012257 stirred material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a preparation method of an ultra-fine type expanding agent, which comprises the following steps: s01, mixing benzoic acid powder, sodium dodecyl benzene sulfonate powder, aluminum powder and alcohol according to a mass ratio of 1:1.2:2:5 stirring, and stirring to volatilize the alcohol until the aluminum powder slurry becomes paste, so as to obtain a paste product; s02, taking out a pasty product obtained by stirring in a stirring cylinder, pouring the pasty product into a baking tray, leveling, and controlling the temperature to be lower than 36 ℃; after baking for 1.5 hours, turning up the pasty product in the baking tray, and baking for about 2 hours until all the alcohol is volatilized to form a baked block; s03, crushing the baked blocky product in the step S02 to obtain a powdery product; and S04, mixing the powdery product with quicklime according to the mass ratio of 1.5, uniformly stirring, and screening by a 200-mesh screen. The problem of prior art when being used for gas drilling hole sealing material, the expansibility is not good enough, can not effectively block nearly drilling crack circle, causes the hole sealing effect not good is solved.
Description
Technical Field
The invention relates to the technical field of expansion materials, in particular to a preparation method and application of an ultrafine expansion agent.
Background
In the field of coal mine gas hole sealing materials, an expanding agent is introduced to introduce quantitative volume expansion, compensate the shrinkage value of the hole sealing material, and prevent the material from shrinkage cracking to influence the structure, function and appearance of the material.
The conventional expanding agent is mainly a calcium sulfoaluminate type concrete expanding agent using cement as a base material.
However, in the actual production process of coal mines, the existing calcium sulphoaluminate type concrete expanding agent is found to have poor expansion capability when being used for a gas drilling hole sealing material, and cannot effectively seal a near-drilling crack ring, so that the hole sealing effect is poor.
Disclosure of Invention
In order to solve the defects and shortcomings of the prior art, the invention aims to provide a preparation method and application of an ultra-fine type expanding agent.
The technical scheme of the invention is as follows: a preparation method of an ultra-fine type expanding agent comprises the following steps:
s01, mixing benzoic acid powder, sodium dodecyl benzene sulfonate powder, aluminum powder and alcohol according to a mass ratio of 1:1.2:2:5, stirring, namely increasing the alcohol content until the aluminum powder slurry can be uniformly attached to the wall of the stirring cylinder when the aluminum powder slurry cannot be uniformly attached to the wall of the stirring cylinder, and volatilizing the alcohol by stirring until the aluminum powder slurry becomes pasty to obtain a pasty product;
s02, taking out the pasty product obtained by stirring in the stirring cylinder, pouring the pasty product into a baking tray, leveling the pasty product, uniformly distributing the pasty product in the baking tray, putting the baking tray on the baking tray, and baking at a controlled temperature below 36 ℃; after baking for 1.5 hours, turning up the pasty product in the baking tray, and baking for about 2 hours until all the alcohol is volatilized to form a baked block;
s03, crushing the baked blocky product in the step S02 to obtain a powdery product;
and S04, mixing the powdery product and quicklime according to the mass ratio of 1.5, uniformly stirring, and screening by using a 200-mesh screen to obtain the superfine expanding agent.
Specifically, in the step S01, the stirring is performed by a stirrer.
Specifically, in step S02, the leveling is performed by a putty knife.
Specifically, the say that the baking in step S02 is explosion-proof oil baking.
Specifically, the pulverization in step S03 is pulverization by a sealed-type sampling machine.
The application of the preparation method of the superfine expanding agent is used for preparing the expanding agent of the coal mine gas hole sealing material.
The invention has the beneficial effects that: compared with the prior art, the method has the advantages that,
1) The invention is added into the coal mine gas hole sealing material, and can effectively solve the problem of non-compact hole sealing. Tests show that while the setting time and the fluidity are ensured to meet the requirements, the free expansion rate of the sealing material added with the expanding agent is higher than that of the sealing material of the traditional calcium sulphoaluminate type concrete expanding agent, the gas pores of the sealing material added with the expanding agent are more densely sealed than that of the sealing material of the traditional calcium sulphoaluminate type concrete expanding agent, and the compressive strength of the sealing material added with the expanding agent is higher than that of the sealing material of the traditional calcium sulphoaluminate type concrete expanding agent;
2) The needed components are easy to obtain, and the quicklime used in the invention is cheap and easy to obtain, thereby providing a new idea for recycling the solid waste coal ash.
Drawings
FIG. 1 is a comparative graph of the compressive strength test of the present invention;
FIG. 2 is a front view of a grouting pipe after grouting with the novel hole sealing material of the present invention;
FIG. 3 is a cross-sectional view of a grouting pipe after grouting with the novel hole sealing material of the present invention;
FIG. 4 is a flow chart of the present invention.
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments:
example 1 was carried out:
in order to solve the problem that the existing calcium sulphoaluminate type concrete expanding agent has poor expansion capability and cannot effectively block a crack ring of a near borehole when being used for a gas borehole sealing material, and the hole sealing effect is poor, the invention adopts a preparation method of an ultrafine type expanding agent by referring to fig. 4, and the method comprises the following steps:
s01, mixing benzoic acid powder, sodium dodecyl benzene sulfonate powder, aluminum powder and alcohol according to a mass ratio of 1:1.2:2:5, stirring, namely increasing the alcohol content until the aluminum powder slurry can be uniformly attached to the wall of the stirring cylinder when the aluminum powder slurry cannot be uniformly attached to the wall of the stirring cylinder, and volatilizing the alcohol by stirring until the aluminum powder slurry becomes pasty to obtain a pasty product;
s02, taking out the pasty product obtained by stirring in the stirring cylinder, pouring the pasty product into a baking tray, leveling the pasty product, uniformly distributing the pasty product in the baking tray, putting the baking tray on the baking tray, and baking at a controlled temperature below 36 ℃; after baking for 1.5 hours, turning up the pasty product in the baking tray, and baking for about 2 hours until all the alcohol is volatilized to form a baked block;
s03, crushing the baked blocky product in the step S02 to obtain a powdery product;
and S04, mixing the powdery product and quicklime according to the mass ratio of 1.5, uniformly stirring, and screening by using a 200-mesh screen to obtain the superfine expanding agent.
Specifically, in the step S01, the stirring is performed by a stirrer.
Specifically, in step S02, the leveling is performed by a putty knife.
Specifically, the baking at step S02 says that the explosion-proof oil heater is baked.
Specifically, the pulverization in step S03 is performed by a sealed type sampling machine.
The application of the preparation method of the superfine expanding agent is used for preparing the expanding agent of the coal mine gas hole sealing material.
In order to test the effectiveness of the ultra-fine type expanding agent of the present invention, the applicant made the following comparative tests:
step 1: determining the main raw materials of the coal mine gas hole sealing material as follows: ordinary portland cement, sulphoaluminate (quick cement), superfine expanding agent, cellulose, rubber powder and water reducing agent;
step 2:
preparing a novel hole sealing material, namely adding the prepared superfine expanding agent, the cement, the ordinary portland cement, the cellulose, the rubber powder and the water reducing agent into a clean and dry automatic stirrer according to a certain proportion, and stirring for fifteen minutes to fully mix various components to prepare the novel hole sealing material;
preparing a comparative hole sealing material, namely adding the calcium sulphoaluminate type concrete expanding agent, the cement, the ordinary portland cement, the cellulose, the rubber powder and the water reducing agent into a clean and dry automatic stirrer according to a certain proportion, and stirring for fifteen minutes to fully mix various components to prepare the comparative hole sealing material;
and step 3: and (3) testing the performance of the coal mine gas hole sealing material, and comparing the material performance between the novel hole sealing material and the comparative hole sealing material. According to the requirements of efficient sealing and convenient grouting construction of the gas extraction drill hole, the material performance mainly inspects four indexes of compressive strength, setting time, expansion rate and fluidity of the stirred material.
Index one: compressive strength
And (4) carrying out compressive strength test on the novel hole sealing material and the comparative hole sealing material. The result is shown in fig. 1, the compressive strength of the novel sealing material is slightly higher than that of the comparative sealing material in the same curing time. Grouting is carried out by adopting a 'two-plugging one-grouting' grouting process, and the front view and the section view of a grouting pipe after grouting are shown in fig. 2 and fig. 3, so that the hole sealing material can effectively seal holes.
Index two: setting time, initial setting and final setting
TABLE 1 measurement of setting time of coal mine gas hole sealing material
The setting time of the novel coal mine gas hole sealing material and the comparative material is measured, and the measurement result is shown in table 1: as can be seen from the table 1, the initial setting time of the novel hole sealing material and the comparative hole sealing material both meet the condition that the requirement of grouting hole sealing on a coal mine site is more than 10min, and the difference between the final setting time and the initial setting time is not more than 5 min.
Index three: free swell ratio%
TABLE 2 free swell ratio test results
The calcium sulphoaluminate type concrete expanding agent is added into the contrast material, the superfine expanding agent is added into the novel hole sealing material, 8 groups of contrast tests are carried out, the test results are shown in table 2, the average value of the free expansion rate of the hole sealing material added with the novel expanding agent is 6.49 percent, the average value of the hole sealing material added with the calcium sulphoaluminate type concrete expanding agent is 3.28 percent, and the free expansion rate of the hole sealing material added with the novel expanding agent is obviously higher than that of the hole sealing material added with the calcium sulphoaluminate type concrete expanding agent.
Fourth index fluidity
TABLE 3 measurement results of fluidity of coal mine gas pore sealing material
As can be seen from Table 3, compared with the comparative hole sealing material, the fluidity of the hole sealing material is 271.25mm, and the fluidity of the novel coal mine gas hole sealing material is 239.50mm which is slightly lower. In terms of the index of fluidity, the performance of the novel hole sealing material is slightly poorer than that of the comparative hole sealing material. However, in general, the grouting hole sealing material requires a fluidity of not less than 200mm, so that both hole sealing materials can meet the field requirements.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (6)
1. A preparation method of an ultrafine type expanding agent is characterized by comprising the following steps:
s01, mixing benzoic acid powder, sodium dodecyl benzene sulfonate powder, aluminum powder and alcohol according to a mass ratio of 1:1.2:2:5, stirring, namely increasing the alcohol content until the aluminum powder slurry can be uniformly attached to the wall of the stirring cylinder when the aluminum powder slurry cannot be uniformly attached to the wall of the stirring cylinder, and volatilizing the alcohol by stirring until the aluminum powder slurry becomes pasty to obtain a pasty product;
s02, taking out the pasty product obtained by stirring in the stirring cylinder, pouring the pasty product into a baking tray, leveling the pasty product, uniformly distributing the pasty product in the baking tray, putting the baking tray on the baking tray for baking, and controlling the temperature to be lower than 36 ℃; after baking for 1.5 hours, turning up the pasty product in the baking tray, and baking for about 2 hours until all the alcohol is volatilized to form a baked block;
s03, crushing the baked blocky product in the step S02 to obtain a powdery product;
and S04, mixing the powdery product and quicklime according to the mass ratio of 1.5, uniformly stirring, and screening by using a 200-mesh screen to obtain the superfine expanding agent.
2. The method of claim 1, wherein the step S01 is performed by stirring with a stirrer.
3. The method of claim 1, wherein the scraping in step S02 is performed by using a putty knife.
4. The method as claimed in claim 1, wherein the baking of step S02 is an explosion-proof oil-filled baking.
5. The method of claim 1, wherein the pulverization in the step S03 is performed by a closed type prototype.
6. The application of the preparation method of the ultrafine expanding agent as described in any one of claims 1 to 5, wherein the preparation method is used for preparing the expanding agent of the coal mine gas hole sealing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211294681.8A CN115650627A (en) | 2022-10-21 | 2022-10-21 | Preparation method and application of superfine expanding agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211294681.8A CN115650627A (en) | 2022-10-21 | 2022-10-21 | Preparation method and application of superfine expanding agent |
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| Publication Number | Publication Date |
|---|---|
| CN115650627A true CN115650627A (en) | 2023-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211294681.8A Pending CN115650627A (en) | 2022-10-21 | 2022-10-21 | Preparation method and application of superfine expanding agent |
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| Country | Link |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105016677A (en) * | 2015-07-07 | 2015-11-04 | 河南天成环保科技股份有限公司 | Grouting and hole-sealing material used for drilling of underground coal mine gas |
| CN114873966A (en) * | 2022-04-28 | 2022-08-09 | 应急管理部信息研究院 | Mining hole sealing curing expansion material |
-
2022
- 2022-10-21 CN CN202211294681.8A patent/CN115650627A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105016677A (en) * | 2015-07-07 | 2015-11-04 | 河南天成环保科技股份有限公司 | Grouting and hole-sealing material used for drilling of underground coal mine gas |
| CN114873966A (en) * | 2022-04-28 | 2022-08-09 | 应急管理部信息研究院 | Mining hole sealing curing expansion material |
Non-Patent Citations (1)
| Title |
|---|
| 鄯振华: "华阳一矿地质探水钻孔新型封孔装置的应用分析", 《煤炭与化工》, vol. 45, no. 6, pages 80 - 82 * |
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Application publication date: 20230131 |
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