CN115959860A - Tungsten tailing high-performance admixture for concrete and preparation method thereof - Google Patents
Tungsten tailing high-performance admixture for concrete and preparation method thereof Download PDFInfo
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- CN115959860A CN115959860A CN202211527398.5A CN202211527398A CN115959860A CN 115959860 A CN115959860 A CN 115959860A CN 202211527398 A CN202211527398 A CN 202211527398A CN 115959860 A CN115959860 A CN 115959860A
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- tungsten
- admixture
- tailings
- concrete
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 229910052721 tungsten Inorganic materials 0.000 title claims abstract description 82
- 239000010937 tungsten Substances 0.000 title claims abstract description 82
- 239000004567 concrete Substances 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000010881 fly ash Substances 0.000 claims abstract description 22
- 239000000843 powder Substances 0.000 claims abstract description 21
- 239000010440 gypsum Substances 0.000 claims abstract description 19
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 19
- 239000002893 slag Substances 0.000 claims abstract description 19
- 239000004568 cement Substances 0.000 claims abstract description 17
- 239000002131 composite material Substances 0.000 claims abstract description 16
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 150000003657 tungsten Chemical class 0.000 claims abstract description 9
- 230000007306 turnover Effects 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 25
- 238000000227 grinding Methods 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 20
- 239000000292 calcium oxide Substances 0.000 description 10
- 235000012255 calcium oxide Nutrition 0.000 description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 description 9
- 235000010755 mineral Nutrition 0.000 description 9
- 239000011707 mineral Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000011083 cement mortar Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910021532 Calcite Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000010446 mirabilite Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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 a tungsten tailing high-performance admixture for concrete and a preparation method thereof. According to the method, 50-55 parts of tungsten tailings and 1-2 parts of excitant are ground by using a turnover ball mill according to parts by weight, and the Boehringer specific surface area of the activated tungsten tailings is controlled to be 450 +/-20 m 2 Per kg, wherein the excitant consists of 98.5 percent of CaO, 1.1 percent of triethanolamine and 0.4 percent of glycol; then adding 5-10 parts of PII cement, 5-35 parts of fly ash, 5-35 parts of slag powder and 5-10 parts of semi-hydrated gypsum, and blending the components by using a three-dimensional mixer to fully homogenize all the components to obtain the tungsten tailing composite admixture. The invention aims to solve the problem of poor workability of the tungsten tailings and improve the activity of the tungsten tailings, thereby improving the activity of the tungsten tailingsThe strength of the concrete enables the tungsten tailings and the slag to be fully and efficiently utilized, the cost is saved, and the environmental pressure is relieved.
Description
Technical Field
The invention relates to the technical field of comprehensive utilization of solid wastes and concrete, in particular to a tungsten tailing high-performance admixture for concrete and a preparation method thereof.
Background
The main stream admixture of the concrete is dry fly ash and mineral powder, and common limestone powder is also used as the admixture alone or mixed with the mineral powder, the dry fly ash and the like as the mineral admixture. However, the supply of the dry-discharged fly ash and the mineral powder is not required at present, some regions even have no admixture available, the price is high, unqualified products such as 'false dry discharge' and the like are increased day by day, the cost of the concrete is increased, the quality is extremely unstable, and the production is difficult to control.
The tungsten tailings are solid materials formed by dehydrating fine tailing pulp discharged after tungsten-containing minerals are finely selected from tungsten ores after the tungsten ores are ground, generally mainly comprise ore minerals and surrounding rock minerals, mainly comprise fluorite, quartz, garnet, feldspar, mica, calcite and other minerals, and contain a small amount of polymetallic minerals such as molybdenum, bismuth and the like, and mainly comprise the following chemical components: siO2, al2O3, caO, caF2, mgO, fe2O3, etc. The tungsten tailings have stable chemical properties and poor reaction activity. The hardness is high, the color is light, the particles are fine, and the method has great advantages in the application aspect that the requirement on the particle size is fine; part of tungsten tailings contain heavy metals, are not well treated, and can cause large discharge amount of polluted tungsten tailings of soil and rivers, and the quantity of old tailings accumulated for many years is large, so that a large-scale utilization approach is urgently needed to be found. At present, tungsten tailings are not effectively utilized integrally, and are mainly stored in a tailing pond or backfilled into a mine, so that resource waste is caused, land is occupied, the environment is polluted, and human health is harmed. However, the tungsten tailings mainly comprise oxides of silicon and aluminum, contain calcium, are fine in particles, and have natural advantages when being used for building materials.
At present, when tungsten tailings are directly used for concrete admixture, the concrete workability is poor, the strength does not meet the technical requirements, and the problems of excessive comprehensive moisture in grinding, blanking and material blockage, dust collection and bag pasting at the tail grinding are influenced. Chinese patent CN103288371A discloses a tungsten tailing concrete admixture, which is composed of tungsten tailings, quicklime, gypsum, mirabilite, etc. and is obtained by milling through a ball mill, in the scheme, the obtained admixture is insufficient in activity only by a physical activation mode of grinding. Chinese patent CN103288371A discloses a concrete admixture and application thereof, wherein the admixture is produced by utilizing tungsten tailings, and is added into the admixture according to the mixing proportion of C30 concrete, so that the comprehensive utilization value of the tungsten tailings is improved. However, the strength of 28d can only reach about 32MPa, and the activator such as quicklime, water glass or sulfate and the like is required to be added, so that the components are more, and the blanking difficulty in the production process is increased. And the admixture is single, and the utilization rate is low. Therefore, a safe, economic and efficient disposal method is urgently needed to be found, the comprehensive utilization rate of the tungsten tailings is improved, and meanwhile, an economical and applicable admixture is provided.
Disclosure of Invention
The invention aims to provide a high-performance admixture of tungsten tailings for concrete and a preparation method thereof, which are used for solving the problem of poor workability of the tungsten tailings and improving the activity of the tungsten tailings, thereby improving the strength of the concrete, fully and efficiently utilizing the tungsten tailings and slag, saving the cost and relieving the environmental pressure. The technical scheme adopted by the invention is as follows:
according to one aspect of the invention, the tungsten tailing high-performance admixture for concrete and the preparation method thereof are provided, wherein the tungsten tailing high-performance admixture is prepared from the following raw materials, by weight, 5-10 parts of PII cement, 5-35 parts of fly ash, 5-35 parts of slag powder, 5-10 parts of semi-hydrated gypsum, 50-55 parts of tungsten tailings and 1-3 parts of an exciting agent.
Preferably, the high-performance admixture of tungsten tailings is prepared from the following raw materials, by weight, 5-10 parts of PII cement, 5-30 parts of fly ash, 5-30 parts of slag powder, 5-10 parts of semi-hydrated gypsum, 50-55 parts of tungsten tailings and 1-2 parts of an exciting agent.
Preferably, the tungsten tailing composite admixture is prepared from the following raw materials, by weight, 7 parts of PII cement, 20 parts of fly ash, 14 parts of slag powder, 7 parts of semi-hydrated gypsum, 52 parts of tungsten tailings and 1.05 parts of an exciting agent.
Preferably, the tungsten tailing composite admixture is prepared from the following raw materials, by weight, 7 parts of PII cement, 27 parts of fly ash, 7 parts of slag powder, 7 parts of semi-hydrated gypsum, 52 parts of tungsten tailings and 1.05 parts of an exciting agent.
Preferably, the excitant consists of 98.5 percent of CaO, 1.1 percent of triethanolamine and 0.4 percent of glycol in percentage by mass.
Preferably, the preparation method of the tungsten tailing high-performance admixture for concrete is characterized by comprising the following steps: the method comprises the following steps:
(1) Grinding 50-55 parts of tungsten tailings and 1-2 parts of exciting agent by using a turnover ball mill according to parts by weight, and controlling the Boehringer specific surface area of the activated tungsten tailings to be 450 +/-20 m < 2 >/kg, wherein the exciting agent consists of 98.5% of CaO, 1.1% of triethanolamine and 0.4% of ethylene glycol;
(2) Then adding 5-10 parts of PII cement, 5-35 parts of fly ash, 5-35 parts of slag powder and 5-10 parts of semi-hydrated gypsum, and blending the components by using a three-dimensional mixer to fully homogenize all the components to obtain the tungsten tailing composite admixture.
The technical scheme adopted by the invention has the following remarkable effects:
(1) The grinding efficiency and the activity of the tungsten tailings are improved. After the exciting agent disclosed by the invention is doped, the grinding efficiency of the tungsten tailings is greatly improved, and the implemented activity is more than 75%.
(2) The strength and the working performance of the concrete are improved. Compared with the blank group as the control, the invention can improve the pressure by more than 5MPa and has good cohesiveness, water retention and slump.
(3) The cost of the concrete admixture is obviously reduced. The tungsten tailings, the fly ash and the gypsum in the raw materials used in the invention have low cost, and the preparation cost of the admixture can be greatly reduced.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to preferred embodiments. It should be noted, however, that the numerous details set forth in the description are merely for the purpose of providing the reader with a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.
Example 1
The preparation method of the tungsten tailing high-performance admixture for concrete comprises the following steps:
grinding 52 parts of tungsten tailings and 1.05 parts of exciting agent by using a turnover ball mill according to parts by weight, controlling the Bosch specific surface area of the activated tungsten tailings to be 450 +/-20 m < 2 >/kg, wherein the exciting agent consists of 98.5% of CaO, 1.1% of triethanolamine and 0.4% of ethylene glycol in percentage by mass; then adding 7 parts of PII cement, 7 parts of fly ash, 27 parts of slag powder and 7 parts of semi-hydrated gypsum, and blending the materials by using a three-dimensional mixer to fully homogenize all the components to obtain the tungsten tailing composite admixture.
Example 2
The preparation method of the tungsten tailing high-performance admixture for the concrete comprises the following steps:
grinding 52 parts of tungsten tailings and 1.05 parts of exciting agent by using a turnover type ball mill according to parts by weight, controlling the Boehringer specific surface area of the activated tungsten tailings to be 450 +/-20 m < 2 >/kg, wherein the exciting agent consists of 98.5% of CaO, 1.1% of triethanolamine and 0.4% of glycol in percentage by mass; then adding 7 parts of PII cement, 14 parts of fly ash, 20 parts of slag powder and 7 parts of semi-hydrated gypsum, and blending the components by using a three-dimensional mixer to fully homogenize all the components to obtain the tungsten tailing composite admixture.
Example 3
The preparation method of the tungsten tailing high-performance admixture for concrete comprises the following steps:
grinding 52 parts of tungsten tailings and 1.05 parts of exciting agent by using a turnover ball mill according to parts by weight, controlling the Bosch specific surface area of the activated tungsten tailings to be 450 +/-20 m < 2 >/kg, wherein the exciting agent consists of 98.5% of CaO, 1.1% of triethanolamine and 0.4% of ethylene glycol in percentage by mass; then adding 7 parts of PII cement, 20 parts of fly ash, 14 parts of slag powder and 7 parts of semi-hydrated gypsum, and blending the components by using a three-dimensional mixer to fully homogenize all the components to obtain the tungsten tailing composite admixture.
Example 4
The preparation method of the tungsten tailing high-performance admixture for the concrete comprises the following steps:
grinding 52 parts of tungsten tailings and 1.05 parts of exciting agent by using a turnover ball mill according to parts by weight, controlling the Bosch specific surface area of the activated tungsten tailings to be 450 +/-20 m < 2 >/kg, wherein the exciting agent consists of 98.5% of CaO, 1.1% of triethanolamine and 0.4% of ethylene glycol in percentage by mass; then adding 7 parts of PII cement, 27 parts of fly ash, 7 parts of slag powder and 7 parts of semi-hydrated gypsum, and blending the components by using a three-dimensional mixer to fully homogenize all the components to obtain the tungsten tailing compound blend.
Comparative example 1
The preparation method of the tungsten tailing high-performance admixture for concrete comprises the following steps:
grinding 55 parts of tungsten tailings and 1 part of exciting agent by using a turnover type ball mill according to parts by weight, controlling the Bob's specific surface area of the activated tungsten tailings to be 450 +/-20 m < 2 >/kg, wherein the exciting agent consists of 98.5% of CaO, 1% of triethanolamine and 0.5% of ethylene glycol in percentage by mass; then adding 5 parts of PII cement, 30 parts of fly ash, 5 parts of slag powder and 5 parts of semi-hydrated gypsum, and blending the materials by using a three-dimensional mixer to fully homogenize all the components to obtain the tungsten tailing composite admixture.
Comparative example 2
The preparation method of the tungsten tailing high-performance admixture for the concrete comprises the following steps:
grinding 55 parts of tungsten tailings and 1 part of exciting agent by using a turnover ball mill according to parts by weight, controlling the Bosch specific surface area of the activated tungsten tailings to be 450 +/-20 m < 2 >/kg, wherein the exciting agent consists of 98.5% of CaO, 1% of triethanolamine and 0.5% of ethylene glycol in percentage by mass; then adding 5 parts of PII cement, 25 parts of fly ash, 5 parts of slag powder and 10 parts of semi-hydrated gypsum, and blending the materials by using a three-dimensional mixer to fully homogenize all the components to obtain the tungsten tailing composite admixture.
The above example 1, example 2, example 3, example 4, comparative example 1 and comparative example 2 are applied to cement mortar and C30 concrete respectively, and the relevant performance indexes of the mortar and the concrete to which the above four tungsten tailing admixtures are applied are detected with reference to the standards of JGJ 55-2011 design rule for mix proportion of common concrete, GB 50010-2010 design specification for concrete structure, and the like, and the relevant results are shown in tables 1 and 2.
TABLE 1 correlation of properties of Cement mortars incorporating the tungsten tailing composite admixtures of the present invention
TABLE 2 relevant Properties of C30 concrete doped with the tungsten tailing composite admixture of the present invention
According to the performance tests, all technical indexes of the tungsten tailing composite admixture prepared in each embodiment of the invention meet the requirements of JG/T486-2015, the 28d activity index of the cement mortar of the composite admixture prepared in all embodiments is larger than 80%, and the strength of all experimental groups for preparing concrete by replacing fly ash is superior to that of the standard concrete of a blank group and a reference group.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.
Claims (6)
1. A tungsten tailing high-performance admixture for concrete is characterized in that: the high-performance admixture of the tungsten tailings is prepared from the following raw materials, by weight, 5-10 parts of PII cement, 5-35 parts of fly ash, 5-35 parts of slag powder, 5-10 parts of semi-hydrated gypsum, 50-55 parts of tungsten tailings and 1-3 parts of an exciting agent.
2. The tungsten tailings high performance admixture for concrete according to claim 1, wherein: the high-performance admixture of the tungsten tailings is prepared from the following raw materials, by weight, 5-10 parts of PII cement, 5-30 parts of fly ash, 5-30 parts of slag powder, 5-10 parts of semi-hydrated gypsum, 50-55 parts of tungsten tailings and 1-2 parts of an exciting agent.
3. The tungsten tailing high-performance admixture for concrete according to claim 1, which is characterized in that: the tungsten tailing composite admixture is prepared from the following raw materials, by weight, 7 parts of PII cement, 20 parts of fly ash, 14 parts of slag powder, 7 parts of semi-hydrated gypsum, 52 parts of tungsten tailings and 1.05 parts of an exciting agent.
4. The tungsten tailing high-performance admixture for concrete according to claim 1, which is characterized in that: the tungsten tailing composite admixture is prepared from the following raw materials, by weight, 7 parts of PII cement, 27 parts of fly ash, 7 parts of slag powder, 7 parts of semi-hydrated gypsum, 52 parts of tungsten tailings and 1.05 parts of an exciting agent.
5. The tungsten tailing high-performance admixture for concrete according to claim 1, which is characterized in that: the excitant consists of 98.5 percent of CaO, 1.1 percent of triethanolamine and 0.4 percent of glycol in percentage by mass.
6. A preparation method of a tungsten tailing high-performance admixture for concrete is characterized by comprising the following steps: the method comprises the following steps:
(1) Grinding 50-55 parts of tungsten tailings and 1-2 parts of exciting agent by using a turnover ball mill according to parts by weight, and controlling the Boehringer specific surface area of the activated tungsten tailings to be 450 +/-20 m < 2 >/kg, wherein the exciting agent consists of 98.5% of CaO, 1.1% of triethanolamine and 0.4% of ethylene glycol;
(2) Then adding 5-10 parts of PII cement, 5-35 parts of fly ash, 5-35 parts of slag powder and 5-10 parts of semi-hydrated gypsum, and blending the components by using a three-dimensional mixer to fully homogenize all the components to obtain the tungsten tailing composite admixture.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211527398.5A CN115959860A (en) | 2022-11-30 | 2022-11-30 | Tungsten tailing high-performance admixture for concrete and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211527398.5A CN115959860A (en) | 2022-11-30 | 2022-11-30 | Tungsten tailing high-performance admixture for concrete and preparation method thereof |
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| CN202211527398.5A Pending CN115959860A (en) | 2022-11-30 | 2022-11-30 | Tungsten tailing high-performance admixture for concrete and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006126752A1 (en) * | 2005-03-24 | 2006-11-30 | Geocon Materials.Inc. | A concrete admixture using waste tailing and methode of thereof |
| CN103288371A (en) * | 2013-05-20 | 2013-09-11 | 中南大学 | Tungsten tailing concrete admixture and application thereof |
| CN103979808A (en) * | 2014-06-04 | 2014-08-13 | 中南大学 | Cement admixture prepared from tungsten tailings and application of cement admixture |
| CN112374788A (en) * | 2020-10-14 | 2021-02-19 | 江西省建筑材料工业科学研究设计院 | Tungsten tailing based composite admixture for concrete and preparation method thereof |
-
2022
- 2022-11-30 CN CN202211527398.5A patent/CN115959860A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006126752A1 (en) * | 2005-03-24 | 2006-11-30 | Geocon Materials.Inc. | A concrete admixture using waste tailing and methode of thereof |
| CN103288371A (en) * | 2013-05-20 | 2013-09-11 | 中南大学 | Tungsten tailing concrete admixture and application thereof |
| CN103979808A (en) * | 2014-06-04 | 2014-08-13 | 中南大学 | Cement admixture prepared from tungsten tailings and application of cement admixture |
| CN112374788A (en) * | 2020-10-14 | 2021-02-19 | 江西省建筑材料工业科学研究设计院 | Tungsten tailing based composite admixture for concrete and preparation method thereof |
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