CN110818350A - Application of copper tailings in concrete for roads - Google Patents
Application of copper tailings in concrete for roads Download PDFInfo
- Publication number
- CN110818350A CN110818350A CN201911110294.2A CN201911110294A CN110818350A CN 110818350 A CN110818350 A CN 110818350A CN 201911110294 A CN201911110294 A CN 201911110294A CN 110818350 A CN110818350 A CN 110818350A
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- China
- Prior art keywords
- copper tailings
- copper
- tailings
- concrete
- cement
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides application of copper tailings in concrete for roads; the concrete comprises cement, water, standard sand and copper tailings; the weight components of the raw materials are respectively as follows: 315-405 parts of cement, 225 parts of water, 1350 parts of standard sand and 45-135 parts of copper tailings; the preparation method of the copper tailings comprises the following steps: firstly, putting copper tailings into a ball mill for grinding to enable the particle size of the copper tailings to be in the range of 1500-3000 mu m; secondly, artificially drying or naturally air-drying the copper tailings until the water content in the copper tailings is less than 4%; thirdly, the copper tailings are treated by powder selection and vertical grinding for 10-15 min, so that the particle size of the copper tailings is within the range of 400-800 mu m, the activity index is 65-75%, and the specific surface area is 400m2/kg。
Description
Technical Field
The invention relates to the field of copper tailing resource recycling, in particular to application of copper tailings in road concrete.
Background
The city of Tongling is famous copper in China, a lot of copper tailings are generated every year, the comprehensive utilization rate of the copper tailings is less than 1 percent and is far lower than the average level of China, and the tailings which cannot be utilized are mostly treated by a tailing dam or landfill mode. The tailings reservoir dam is easy to cause landslide, debris flow and other geological disasters; the landfill occupies a large storage area, and the polluted environment also has the risk of dam break. Therefore, the research on the recycling of the copper tailings slag is carried out to improve the comprehensive utilization rate of the copper tailings slag, and the research results can save a large amount of land resources, reduce the economic burden of enterprises and protect the surrounding environment of a mining area and the personal safety of residents in the mining area, so the development of the research has great economic and social significance. Meanwhile, the basic principle of 'reduction, reutilization and resource' of the national circular economy promotion method is also met; the method conforms to the national general strategy of energy conservation, emission reduction, low carbon and environmental protection, and conforms to the relevant conditions of tax-free comprehensive utilization of national resources, thereby greatly reducing the cost of enterprises and having great research value.
Our current research direction is: the activity of the copper tailings is utilized to replace cement in concrete, so that the cost is reduced, and the copper tailings is particularly applied to the concrete in the aspect of road construction; the utility value of the catalyst is not fully utilized.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the application of the copper tailings in the concrete for the road.
The invention solves the technical problems through the following technical means:
the application of the copper tailings in the concrete for the road; the concrete comprises cement, water, standard sand and copper tailings; the weight components of the raw materials are respectively as follows: 315-405 parts of cement, 225 parts of water, 1350 parts of standard sand and 45-135 parts of copper tailings.
As an improvement of the technical scheme, the concrete comprises the raw materials of 369-396 parts by weight, 225 parts by weight, 1350 parts by weight and 54-81 parts by weight.
As an improvement of the technical scheme, the raw material weight components in the concrete are preferably cement 382.5, water 225, standard sand 1350 and copper tail 67.5.
As an improvement of the technical scheme, the specific surface area of the copper tailings is 300-400m2/kg。
As an improvement of the technical scheme, the particle size of the copper tailings is 400-800 μm.
As an improvement of the technical proposal, the type of the cement is P.O 42.5.
As an improvement of the technical scheme, the preparation method of the copper tailings comprises the following steps:
firstly, putting copper tailings into a ball mill for grinding to enable the particle size of the copper tailings to be in the range of 1500-3000 mu m;
secondly, artificially drying or naturally air-drying the copper tailings until the water content in the copper tailings is less than 4%;
thirdly, the copper tailings are treated by powder selection and vertical grinding for 10-15 min, so that the particle size of the copper tailings is within the range of 400-800 mu m, the activity index is 65-75%, and the specific surface area is 400m2/kg
The invention has the beneficial effects that:
the copper tailings are processed to obtain the copper tailings with the particle size of 400-800 mu m, the activity index of 65-75 percent and the specific surface area of 300-400m2Per kg of copper tailings; the copper tailings are treated while the cost of the concrete is reduced by replacing part of cement in the concrete, and the activity ratio of the concrete in 7 days and the activity ratio of the concrete in 28 days reach more than 60 percent of those of a comparative case.
Drawings
FIG. 1 is a table of concrete components described in examples 1 to 8 of the present invention;
FIG. 2 is a table comparing the 7-day activity strengths of the concretes of examples 1-8 of the present invention;
FIG. 3 is a table comparing the 28-day activity strength of the concrete of examples 1 to 8 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Example 1
The copper tailings are applied to the concrete for the road, and the concrete comprises cement, water, standard sand and copper tailings; the weight components of the raw materials are respectively as follows: cement 405, water 225, standard sand 1350 and copper tailings 45; the cement adopts the peak P.O 42.5; the standard sand is prepared by mixing machine-made sand and superfine sand, and the fineness modulus of the machine-made sand is 3.2; the fineness modulus of the extra fine sand is 1.1.
Example 2
The copper tailings are applied to the concrete for the road, and the concrete comprises cement, water, standard sand and copper tailings; the weight components of the raw materials are respectively as follows: cement 396, water 225, standard sand 1350 and copper tailings 54; the cement adopts the peak P.O 42.5; the standard sand is prepared by mixing machine-made sand and superfine sand, and the fineness modulus of the machine-made sand is 3.2; the fineness modulus of the extra fine sand is 1.1.
Example 3
The copper tailings are applied to the concrete for the road, and the concrete comprises cement, water, standard sand and copper tailings; the weight components of the raw materials are respectively as follows: cement 387, water 225, standard sand 1350 and copper tailings 63; the cement adopts the peak P.O 42.5; the standard sand is prepared by mixing machine-made sand and superfine sand, and the fineness modulus of the machine-made sand is 3.2; the fineness modulus of the extra fine sand is 1.1.
Example 4
The copper tailings are applied to the concrete for the road, and the concrete comprises cement, water, standard sand and copper tailings; the weight components of the raw materials are respectively as follows: cement 382.5, water 225, standard sand 1350 and copper tailings 67.5; the cement adopts the peak P.O 42.5; the standard sand is prepared by mixing machine-made sand and superfine sand, and the fineness modulus of the machine-made sand is 3.2; the fineness modulus of the extra fine sand is 1.1.
Example 5
The copper tailings are applied to the concrete for the road, and the concrete comprises cement, water, standard sand and copper tailings; the weight components of the raw materials are respectively as follows: cement 378, water 225, standard sand 1350 and copper tailings 72; the cement adopts the peak P.O 42.5; the standard sand is prepared by mixing machine-made sand and superfine sand, and the fineness modulus of the machine-made sand is 3.2; the fineness modulus of the extra fine sand is 1.1.
Example 6
The copper tailings are applied to the concrete for the road, and the concrete comprises cement, water, standard sand and copper tailings; the weight components of the raw materials are respectively as follows: cement 369, water 225, standard sand 1350 and copper tailings 81; the cement adopts the peak P.O 42.5; the standard sand is prepared by mixing machine-made sand and superfine sand, and the fineness modulus of the machine-made sand is 3.2; the fineness modulus of the extra fine sand is 1.1.
Example 7
The copper tailings are applied to the concrete for the road, and the concrete comprises cement, water, standard sand and copper tailings; the weight components of the raw materials are respectively as follows: cement 360, water 225, standard sand 1350 and copper tailings 90; the cement adopts the peak P.O 42.5; the standard sand is prepared by mixing machine-made sand and superfine sand, and the fineness modulus of the machine-made sand is 3.2; the fineness modulus of the extra fine sand is 1.1.
Example 8
The copper tailings are applied to the concrete for the road, and the concrete comprises cement, water, standard sand and copper tailings; the weight components of the raw materials are respectively as follows: cement 315, water 225, standard sand 1350 and copper tailings 135; the cement adopts the peak P.O 42.5; the standard sand is prepared by mixing machine-made sand and superfine sand, and the fineness modulus of the machine-made sand is 3.2; the fineness modulus of the extra fine sand is 1.1.
Setting a comparison case aiming at the examples 1-8, wherein the comparison case is applied to the concrete for the road, and the concrete comprises cement, water, standard sand and copper tailings; the weight components of the raw materials are respectively as follows: cement 450, water 225, standard sand 1350 and copper tailings 0; the cement adopts the peak P.O 42.5; the standard sand is prepared by mixing machine-made sand and superfine sand, and the fineness modulus of the machine-made sand is 3.2; the fineness modulus of the extra fine sand is 1.1.
In the embodiments 1 to 8, the particle size of the copper tailings is 400 to 800 μm; the preparation method of the copper tailings comprises the following steps:
firstly, putting copper tailings into a ball mill for grinding to enable the particle size of the copper tailings to be in the range of 1500-3000 mu m;
secondly, artificially drying or naturally air-drying the copper tailings until the water content in the copper tailings is less than 4%;
thirdly, the copper tailings are treated by powder selection and vertical grinding for 10-15 min, so that the particle size of the copper tailings is within the range of 400-800 mu m, the activity index is 65-75%, and the specific surface area is 400m2/kg。
It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The application of the copper tailings in the concrete for the road is characterized in that: the concrete comprises cement, water, standard sand and copper tailings; the weight components of the raw materials are respectively as follows: 315-405 parts of cement, 225 parts of water, 1350 parts of standard sand and 45-135 parts of copper tailings.
2. The use of copper tailings in road concrete according to claim 1, wherein: the concrete comprises the following raw materials, by weight, 369-396, water 225, standard sand 1350 and copper tails 54-81.
3. The use of copper tailings in road concrete according to claim 2, wherein: the raw material weight components in the concrete are preferably cement 382.5, water 225, standard sand 1350 and copper tail 67.5.
4. The use of the copper tailings of any one of claims 1 to 3 in road concrete, wherein: the specific surface area of the copper tailings is 300-400m2/kg。
5. The use of copper tailings in road concrete according to claim 4, wherein: the particle size of the copper tailings is 400-800 mu m.
6. The use of copper tailings in road concrete according to claim 5, wherein: the type of the cement is P.O 42.5.
7. The use of copper tailings in road concrete according to claim 1, wherein: the preparation method of the copper tailings comprises the following steps:
firstly, putting copper tailings into a ball mill for grinding to enable the particle size of the copper tailings to be in the range of 1500-3000 mu m;
secondly, artificially drying or naturally air-drying the copper tailings until the water content in the copper tailings is less than 4%;
thirdly, the copper tailings are treated by powder selection and vertical grinding for 10-15 min, so that the particle size of the copper tailings is within the range of 400-800 mu m, the activity index is 65-75%, and the specific surface area is 400m2/kg。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911110294.2A CN110818350A (en) | 2019-11-14 | 2019-11-14 | Application of copper tailings in concrete for roads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911110294.2A CN110818350A (en) | 2019-11-14 | 2019-11-14 | Application of copper tailings in concrete for roads |
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| CN110818350A true CN110818350A (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911110294.2A Pending CN110818350A (en) | 2019-11-14 | 2019-11-14 | Application of copper tailings in concrete for roads |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2012112567A (en) * | 2012-03-30 | 2013-12-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования Северо-Кавказский горно-металлургический институт (государственный технологический университет) (СКГМИ (ГТУ)) | MORTGAGE MIXTURE |
| CN104762863A (en) * | 2015-03-17 | 2015-07-08 | 江苏航卓建设股份有限公司 | Bituminous mixture used for thin layer overlay of cement concrete pavement and preparation and construction methods of bituminous mixture |
| WO2017142986A1 (en) * | 2016-02-19 | 2017-08-24 | Arizona Board Of Regents On Behalf Of The University Of Arizona | Construction material with improved strength and water resistance and methods of forming the same |
| CN107244865A (en) * | 2017-06-05 | 2017-10-13 | 山东龙泉管道工程股份有限公司 | High-strength concrete using fines molybdic tailing and barren rock and preparation method thereof |
| CN108117292A (en) * | 2017-12-28 | 2018-06-05 | 江西省建筑材料工业科学研究设计院 | A kind of copper tailing slag complex mineral blending material and preparation method thereof |
-
2019
- 2019-11-14 CN CN201911110294.2A patent/CN110818350A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2012112567A (en) * | 2012-03-30 | 2013-12-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования Северо-Кавказский горно-металлургический институт (государственный технологический университет) (СКГМИ (ГТУ)) | MORTGAGE MIXTURE |
| CN104762863A (en) * | 2015-03-17 | 2015-07-08 | 江苏航卓建设股份有限公司 | Bituminous mixture used for thin layer overlay of cement concrete pavement and preparation and construction methods of bituminous mixture |
| WO2017142986A1 (en) * | 2016-02-19 | 2017-08-24 | Arizona Board Of Regents On Behalf Of The University Of Arizona | Construction material with improved strength and water resistance and methods of forming the same |
| CN107244865A (en) * | 2017-06-05 | 2017-10-13 | 山东龙泉管道工程股份有限公司 | High-strength concrete using fines molybdic tailing and barren rock and preparation method thereof |
| CN108117292A (en) * | 2017-12-28 | 2018-06-05 | 江西省建筑材料工业科学研究设计院 | A kind of copper tailing slag complex mineral blending material and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 叶晓冬: ""铜尾矿粉混凝土微观机理及力学性能研究"", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
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Application publication date: 20200221 |