CN114292058A - Tungsten tailing sand exterior wall putty and preparation method thereof - Google Patents
Tungsten tailing sand exterior wall putty and preparation method thereof Download PDFInfo
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- CN114292058A CN114292058A CN202111477278.4A CN202111477278A CN114292058A CN 114292058 A CN114292058 A CN 114292058A CN 202111477278 A CN202111477278 A CN 202111477278A CN 114292058 A CN114292058 A CN 114292058A
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- tungsten
- exterior wall
- putty
- tailing sand
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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
Abstract
The invention discloses tungsten tailing sand exterior wall putty and a preparation method thereof, and solves the technical problems that in the prior art, tungsten tailing sand contains a large amount of clay minerals, and the traditional method of simply adding an expanding agent needs to ensure that a large amount of water in the tungsten tailing sand can play a role, so that the tungsten tailing sand exterior wall putty is not suitable for preparing the putty. It comprises 85.0 to 93.0 percent of tungsten tailing sand, 0.3 to 0.5 percent of cellulose ether, 1 to 5 percent of expanding agent, 0.5 to 1 percent of wood fiber, 0.05 to 0.1 percent of shrinkage reducing agent, 5 to 10 percent of cement and 2.0 to 6.0 percent of emulsion powder; the sum of the mass percentages of the components is 100 percent. Aiming at the characteristic of shrinkage in each stage, the total shrinkage is controlled within a reasonable range by using the combined action of a plurality of additives, so that the application of tungsten tailings is possible, and the problems of accumulation of tailings-free sands and environmental damage caused by land occupation are reduced; in the production of the putty, the tungsten tailing sand has proper fineness, does not need to be processed continuously, has low price and obviously reduces the production cost of the exterior wall putty.
Description
Technical Field
The invention relates to exterior wall putty and a preparation method thereof, in particular to tungsten tailing sand exterior wall putty and a preparation method thereof.
Background
Tungsten, called industrial monosodium glutamate, is widely applied to the fields of cutting tools, drill bits, armor piercing bullets, electronic devices and the like, and is one of indispensable materials in modern industry. However, the grade of tungsten ore is generally low, and is 0.1% -0.7%, so that a large amount of tailings are generated in the ore dressing process, and account for more than 90% of the raw ore. About 40 more than ten thousand of tungsten tailings are discharged every year in China, most of tungsten tailings are not effectively utilized, and the current stockpiling amount reaches more than 1000 more than ten thousand.
The existing exterior wall putty generally uses limestone powder or heavy calcium carbonate powder as a main filling material, but has the following problems: consumes natural resources and has high manufacturing cost, wherein the market price of limestone powder exceeds 100 yuan/ton, and the market price of heavy calcium powder is more than 300 yuan/ton.
The putty powder is not widely distributed and available in a stable-property cheap powder, and tungsten tailing sand is directly used as the putty powder manufactured by the filler without any treatment, so that the shrinkage in the full age period can reach 0.6 percent, cracking is easy to occur, and the use requirement cannot be met. Secondly, a large amount of clay minerals contained in the tungsten tailings have overlarge shrinkage in the whole age period and unstable properties, and the slurry prepared by mixing the clay minerals has large plastic shrinkage and later drying shrinkage, so that the use requirement cannot be met.
Disclosure of Invention
The invention aims to provide tungsten tailing sand exterior wall putty and a preparation method thereof, and aims to solve the technical problems that in the prior art, tungsten tailing sand contains a large amount of clay minerals, and the traditional method of simply adding an expanding agent needs to ensure that a large amount of water in the tungsten tailing sand can play a role, so that the tungsten tailing sand exterior wall putty is not suitable for preparing the putty.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides tungsten tailing sand exterior wall putty and a preparation method thereof, wherein the tungsten tailing sand exterior wall putty comprises the following components in percentage by mass: 85.0 to 93.0 percent of tungsten tailing sand, 0.3 to 0.5 percent of cellulose ether, 1 to 5 percent of expanding agent, 0.5 to 1 percent of wood fiber, 0.05 to 0.1 percent of shrinkage reducing agent, 5 to 10 percent of cement and 2.0 to 6.0 percent of emulsion powder;
the sum of the mass percentages of the components is 100 percent.
Optionally or preferably, the composition comprises the following components in percentage by mass: 87.5 percent of tungsten tailings sand, 0.4 percent of cellulose ether, 2 percent of expanding agent, 0.5 percent of wood fiber, 0.1 percent of shrinkage reducing agent, 7 percent of cement and 2.5 percent of latex powder.
Optionally or preferably, the composition comprises the following components in percentage by mass: 85.1% of tungsten tailings sand, 5% of cellulose ether, 2.5% of expanding agent, 0.8% of wood fiber, 0.1% of shrinkage reducing agent, 6% of cement and 5% of latex powder.
Alternatively or preferably, the cellulose ether has an NDJ viscosity of from 10 to 15 million.
Alternatively or preferably, the shrinkage reducing agent is any one of a polyethylene glycol shrinkage reducing agent and a fatty alcohol.
Optionally or preferably, the swelling agent is any one of a magnesium oxide composite swelling agent and a UEA swelling agent.
The invention provides a preparation method of tungsten tailing sand exterior wall putty, which comprises the following steps:
s1, sequentially putting the materials in the formula into a stirrer through high-precision metering;
s2, stirring until the materials are uniformly dispersed, adding the water solution according to the mass ratio of 32-36%, adding water, stirring until the materials are uniform and no obvious particle powder cluster exists, and discharging.
Based on the technical scheme, the embodiment of the invention can at least produce the following technical effects:
(1) according to the tungsten tailing sand exterior wall putty and the preparation method thereof, provided by the invention, aiming at the characteristic of shrinkage at each stage, a plurality of additives are used for combined action, the total shrinkage is controlled within a reasonable range, and the application of tungsten tailing sand becomes possible. Firstly, aiming at plastic shrinkage, the dosage of cellulose ether is increased, the early dehydration speed is reduced, the added expanding agent is partially supplemented, and simultaneously, a small amount of wood fiber is added to provide a bridging effect and increase the transmission speed of internal moisture so as to avoid the local shrinkage from being too fast, thereby effectively reducing the early cracking risk. Optionally, shrinkage reducing agent can be added in the dry shrinkage stage to reduce the surface tension of the pore solution and thus reduce the shrinkage stress, and additional swelling agent is used as supplement. The shrinkage rate can be reduced to be within 0.1 percent after treatment, and the upper wall can be ensured not to crack, so that the use requirement of manufacturing exterior wall putty can be met; meanwhile, tungsten tailings sand which is industrial solid waste is consumed, the recycling problem of the tailings sand is solved, and the problems of accumulation of tailings-free sand and environmental damage caused by land occupation are reduced; in the production of the putty, the tungsten tailing sand has proper fineness and does not need to be processed continuously; the cost of purchased limestone powder is 100 yuan/ton, the actual cost is about 90 yuan per ton of putty, the putty tailing sand of the tailing sand is used as a solid waste resource, the cost is not needed, the average drying treatment cost is 15 yuan per ton, the rest components in the formula are calculated by higher mixing amount, the cost is increased for each ton of putty, the expanding agent is 12 yuan, the wood fiber is 3 yuan, the shrinkage reducing agent is 15 yuan, the cellulose ether is 30 yuan, the total amount is about 75 yuan, the actual cost is reduced by 15-30 yuan compared with the cost of purchased limestone powder, the price is low, and the production cost of the exterior wall putty is obviously reduced.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1
1.1 formulation
The invention provides tungsten tailing sand exterior wall putty which comprises the following components in percentage by mass:
87.5 percent of tungsten tailings sand, 0.4 percent of cellulose ether, 2 percent of expanding agent, 0.5 percent of wood fiber, 0.1 percent of shrinkage reducing agent, 7 percent of cement and 2.5 percent of latex powder.
As an alternative embodiment, the cellulose ether has an NDJ viscosity of 10 to 15 ten thousand.
As an alternative embodiment, the shrinkage reducing agent is a polyethylene glycol shrinkage reducing agent.
As an alternative embodiment, the swelling agent is a magnesium oxide composite swelling agent.
1.2 preparation steps
The invention provides a preparation method of tungsten tailing sand exterior wall putty, which comprises the following steps:
s1, sequentially putting the materials in the formula into a stirrer through high-precision metering;
s2, stirring until the materials are uniformly dispersed, adding the water solution according to the mass ratio of 32-36%, adding water, stirring until the materials are uniform and no obvious particle powder cluster exists, and discharging.
The test water demand ratio is 32 percent, the main test indexes are that the shrinkage in the whole age is 0.087 percent, the drawing strength is 0.67MPa, and the test of a 10cm bent rod does not crack.
Example 2
2.1 formulation
The invention provides tungsten tailing sand exterior wall putty which comprises the following components in percentage by mass:
85.1% of tungsten tailings sand, 5% of cellulose ether, 2.5% of expanding agent, 0.8% of wood fiber, 0.1% of shrinkage reducing agent, 6% of cement and 5% of latex powder.
Alternatively or preferably, the cellulose ether has an NDJ viscosity of from 10 to 15 million.
Alternatively or preferably, the shrinkage reducing agent is any one of a polyethylene glycol shrinkage reducing agent and a fatty alcohol.
Optionally or preferably, the swelling agent is any one of a magnesium oxide composite swelling agent and a UEA swelling agent.
2.2 preparation steps
The invention provides a preparation method of tungsten tailing sand exterior wall putty, which comprises the following steps:
s1, sequentially putting the materials in the formula into a stirrer through high-precision metering;
s2, stirring until the materials are uniformly dispersed, adding the water solution according to the mass ratio of 32-36%, adding water, stirring until the materials are uniform and no obvious particle powder cluster exists, and discharging.
The water demand ratio is 33 percent in the test, the main test index is 0.093 percent of the shrinkage of the whole age. The drawing strength is 0.61MPa, and the test of a 5cm bent rod does not crack.
Comparative example 1
Compared with example 1, by using limestone powder, the putty layer with the thickness of 2mm does not crack in an early drying shrinkage test, the drying shrinkage is 0.13%, and the shrinkage in the full age is 0.21%.
Comparative example 2
Compared with the example 1, the tungsten tailing sand is used for replacing limestone powder without any treatment, the putty layer with the thickness of 2mm is cracked in an early drying shrinkage test, the drying shrinkage is 0.23 percent, the shrinkage in the full age is 0.37 percent,
comparative example 3
Compared with the embodiment 1, the early drying shrinkage test shows that the putty layer with the thickness of 2mm cracks, the drying shrinkage is 0.16 percent, and the shrinkage in the whole age is 0.32 percent by simply adding the expanding agent without adding other measures.
Comparative example 4
Compared with the embodiment 1, the putty layer with the thickness of 2mm does not crack in the early drying shrinkage test by simply adding the expanding agent without adding other measures, the drying shrinkage amount is 0.03 percent, and the shrinkage in the whole age is 0.09 percent.
As can be seen from comparative examples 3-4, the swelling agent is used singly in a large amount to solve the problem of later shrinkage, but the swelling agent is unstable and can cause excessive swelling damage, so the scheme of using a small amount of the swelling agent in combination with the shrinkage reducing agent in the formula is adopted.
According to the tungsten tailing sand exterior wall putty and the preparation method thereof, provided by the invention, aiming at the characteristic of shrinkage at each stage, a plurality of additives are used for combined action, the total shrinkage is controlled within a reasonable range, and the application of tungsten tailing sand becomes possible. Firstly, aiming at plastic shrinkage, the dosage of cellulose ether is increased, the early dehydration speed is reduced, the added expanding agent is partially supplemented, and simultaneously, a small amount of wood fiber is added to provide a bridging effect and increase the transmission speed of internal moisture so as to avoid the local shrinkage from being too fast, thereby effectively reducing the early cracking risk. Optionally, shrinkage reducing agent can be added in the dry shrinkage stage to reduce the surface tension of the pore solution and thus reduce the shrinkage stress, and additional swelling agent is used as supplement. The shrinkage rate can be reduced to be within 0.1 percent after treatment, and the upper wall can be ensured not to crack, so that the use requirement of manufacturing exterior wall putty can be met; meanwhile, tungsten tailings sand which is industrial solid waste is consumed, the recycling problem of the tailings sand is solved, and the problems of accumulation of tailings-free sand and environmental damage caused by land occupation are reduced; in the production of the putty, the tungsten tailing sand has proper fineness and does not need to be processed continuously; the cost of purchased limestone powder is 100 yuan/ton, the actual cost is about 90 yuan per ton of putty, the putty tailing sand of the tailing sand is used as a solid waste resource, the cost is not needed, the average drying treatment cost is 15 yuan per ton, the rest components in the formula are calculated by higher mixing amount, the cost is increased for each ton of putty, the expanding agent is 12 yuan, the wood fiber is 3 yuan, the shrinkage reducing agent is 15 yuan, the cellulose ether is 30 yuan, the total amount is about 75 yuan, the actual cost is reduced by 15-30 yuan compared with the cost of purchased limestone powder, the price is low, and the production cost of the exterior wall putty is obviously reduced.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (7)
1. The tungsten tailing sand exterior wall putty is characterized by comprising the following components in percentage by mass: 85.0 to 93.0 percent of tungsten tailing sand, 0.3 to 0.5 percent of cellulose ether, 1 to 5 percent of expanding agent, 0.5 to 1 percent of wood fiber, 0.05 to 0.1 percent of shrinkage reducing agent, 5 to 10 percent of cement and 2.0 to 6.0 percent of emulsion powder;
the sum of the mass percentages of the components is 100 percent.
2. The tungsten tailings sand exterior wall putty as claimed in claim 1, which comprises the following components in percentage by mass: 87.5 percent of tungsten tailings sand, 0.4 percent of cellulose ether, 2 percent of expanding agent, 0.5 percent of wood fiber, 0.1 percent of shrinkage reducing agent, 7 percent of cement and 2.5 percent of latex powder.
3. The tungsten tailings sand exterior wall putty as claimed in claim 1, which comprises the following components in percentage by mass: 85.1% of tungsten tailings sand, 5% of cellulose ether, 2.5% of expanding agent, 0.8% of wood fiber, 0.1% of shrinkage reducing agent, 6% of cement and 5% of latex powder.
4. The tungsten tailings sand exterior wall putty as claimed in claim 1, wherein: the NDJ viscosity of the cellulose ether is 10-15 ten thousand.
5. The tungsten tailings sand exterior wall putty as claimed in claim 1, wherein: the shrinkage reducing agent is any one of polyethylene glycol shrinkage reducing agent and fatty alcohol.
6. The tungsten tailings sand exterior wall putty as claimed in claim 1, wherein: the expanding agent is any one of a magnesium oxide compound expanding agent and a UEA expanding agent.
7. The preparation method of the tungsten tailings sand putty for external walls as claimed in any one of claims 1 to 6, which comprises the following steps:
s1, sequentially putting the materials in the formula into a stirrer through high-precision metering;
s2, stirring until the materials are uniformly dispersed, adding the water solution according to the mass ratio of 32-36%, adding water, stirring until the materials are uniform and no obvious particle powder cluster exists, and discharging.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111477278.4A CN114292058B (en) | 2021-12-06 | 2021-12-06 | Tungsten tailing sand exterior wall putty and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111477278.4A CN114292058B (en) | 2021-12-06 | 2021-12-06 | Tungsten tailing sand exterior wall putty and preparation method thereof |
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| CN114292058A true CN114292058A (en) | 2022-04-08 |
| CN114292058B CN114292058B (en) | 2022-11-25 |
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Citations (6)
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| CN102826868A (en) * | 2012-08-27 | 2012-12-19 | 中南大学 | Foaming agent for tailing sintering perforated brick and application thereof |
| CN103011709A (en) * | 2012-12-14 | 2013-04-03 | 盐城工学院 | Anti-radiation building putty powder and preparation method thereof |
| CN103113056A (en) * | 2013-02-18 | 2013-05-22 | 桐乡正昶新型材料有限公司 | Mortar and preparation method thereof |
| CN106396539A (en) * | 2016-08-26 | 2017-02-15 | 四川蜂巢外墙保温隔热技术有限公司 | Super glue for preventing partition plate cracking |
| WO2019141098A1 (en) * | 2018-01-17 | 2019-07-25 | 成都绿锂环保科技有限公司 | High-value comprehensive utilization method for lithium slag |
| CN110550918A (en) * | 2019-09-12 | 2019-12-10 | 广州迪瑞夫建筑材料有限公司 | Polymer modified repair mortar and construction process |
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2021
- 2021-12-06 CN CN202111477278.4A patent/CN114292058B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102826868A (en) * | 2012-08-27 | 2012-12-19 | 中南大学 | Foaming agent for tailing sintering perforated brick and application thereof |
| CN103011709A (en) * | 2012-12-14 | 2013-04-03 | 盐城工学院 | Anti-radiation building putty powder and preparation method thereof |
| CN103113056A (en) * | 2013-02-18 | 2013-05-22 | 桐乡正昶新型材料有限公司 | Mortar and preparation method thereof |
| CN106396539A (en) * | 2016-08-26 | 2017-02-15 | 四川蜂巢外墙保温隔热技术有限公司 | Super glue for preventing partition plate cracking |
| WO2019141098A1 (en) * | 2018-01-17 | 2019-07-25 | 成都绿锂环保科技有限公司 | High-value comprehensive utilization method for lithium slag |
| CN110550918A (en) * | 2019-09-12 | 2019-12-10 | 广州迪瑞夫建筑材料有限公司 | Polymer modified repair mortar and construction process |
Non-Patent Citations (1)
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| 徐振伟等: "铁尾矿砂在外墙保温砂浆中的应用", 《墙材革新与建筑节能》 * |
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