CN110204276A - A kind of radiation protection air entrained concrete containing Pb-Zn tailings - Google Patents

A kind of radiation protection air entrained concrete containing Pb-Zn tailings Download PDF

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Publication number
CN110204276A
CN110204276A CN201910469205.7A CN201910469205A CN110204276A CN 110204276 A CN110204276 A CN 110204276A CN 201910469205 A CN201910469205 A CN 201910469205A CN 110204276 A CN110204276 A CN 110204276A
Authority
CN
China
Prior art keywords
tailings
air entrained
entrained concrete
radiation protection
protection air
Prior art date
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.)
Pending
Application number
CN201910469205.7A
Other languages
Chinese (zh)
Inventor
王明远
许毓海
罗忠涛
苏振华
江皇义
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGXI ZHONGJIN LINGNAN MINING Co Ltd
Shenzhen Zhongjin Lingnan Non-Ferrous Metal Co Ltd
Nanjing Kun Yuan Material Co Ltd
Original Assignee
GUANGXI ZHONGJIN LINGNAN MINING Co Ltd
Shenzhen Zhongjin Lingnan Non-Ferrous Metal Co Ltd
Nanjing Kun Yuan Material Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GUANGXI ZHONGJIN LINGNAN MINING Co Ltd, Shenzhen Zhongjin Lingnan Non-Ferrous Metal Co Ltd, Nanjing Kun Yuan Material Co Ltd filed Critical GUANGXI ZHONGJIN LINGNAN MINING Co Ltd
Priority to CN201910469205.7A priority Critical patent/CN110204276A/en
Publication of CN110204276A publication Critical patent/CN110204276A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
    • 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
    • C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00258—Electromagnetic wave absorbing or shielding materials
    • 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
    • C04B2111/40—Porous or lightweight materials
    • 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
    • C04B2111/52—Sound-insulating materials
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • 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
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a kind of radiation protection air entrained concrete containing Pb-Zn tailings, including following each component by mass percentage: Pb-Zn tailings 5-20%, cement 5-15%, fine sand 10-40%, flyash 10-40%, quick lime 10-20%, gypsum 1-5% and aluminium powder cream 0.05-0.10%.The high value added utilization of lead zinc tailings can be achieved in the present invention, reduces production cost, and improve the shielding property of air entrained concrete.

Description

A kind of radiation protection air entrained concrete containing Pb-Zn tailings
Technical field
The invention belongs to environment and architecture Material Fields, and in particular to a kind of radiation protection aerating coagulation containing Pb-Zn tailings Soil.
Background technique
The improvement and control of Tailings Dam of Mine are always the problem of bargh, on the one hand there is dust and Leaching of Heavy Metals Equal problem of environmental pollutions, on the other hand there are the safety problems such as dam break again, and CROSS REFERENCE at home and abroad frequently occurs, and solve Certainly the best approach of this problem is exactly by tailing secure resources.Cement concrete direction can satisfy this demand, cement solidification It can effectively solidify and stablize most of heavy metal, and China's concrete annual output breaks through 2,000,000,000 m for many years3, mostly occurred The phenomenon that sandstone and admixture scarcity of resources lead to big bulge in price, and the discharge amount of all kinds of tailings in China about 2,000,000,000 t every year, such as will Tailing, which carries out the preparation of the building materials such as cement, concrete according to its resource characteristics, then can effectively solve this problem.
With the raising year by year of lead-zinc ore mining amount, the pollution of environment is also increasingly aggravated, it is useless to carry out controlling proposals solid Gurry comprehensive utilization and disposition, realize " minimizing, the innoxious, recycling " of controlling proposals solid waste, turn harm into good, Turn waste into wealth, walk the Mining Sustainable Development road that development of resources is mutually coordinated with environmental protection, is current important to grind the direction that makes internal disorder or usurp Aiming at the problem that mill tailings comprehensive utilization, National Development and Reform Commission clearly proposes to carry forward vigorously tailing association useful constituent It efficiently separates extraction and high value added utilization, low cost production building materials and gelling backfill utilizes, carry out ecological environment treatment, Construction Green Mine is promoted, mineral resources comprehensive utilization rate is improved.In Pb-Zn tailings in high added value element barite value It is higher, but existing main problem is that extraction cost is higher, special economic benefit of extracting is unobvious, must in consideration of it, having Study a kind of radiation protection air entrained concrete containing Pb-Zn tailings.
Summary of the invention
To solve the deficiencies in the prior art, the radiation protection aerating containing Pb-Zn tailings that the purpose of the present invention is to provide a kind of is mixed Solidifying soil, it can be achieved that lead zinc tailings high value added utilization, reduce production cost, and improve the shielding property of air entrained concrete.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
A kind of radiation protection air entrained concrete containing Pb-Zn tailings, including following each component by mass percentage: Pb-Zn tailings 5-20%, cement 5-15%, fine sand 10-40%, flyash 10-40%, quick lime 10-20%, gypsum 1-5% and aluminium powder cream 0.05- 0.10%。
Preferably, aforementioned Pb-Zn tailings use Pb-Zn deposits tailing disposal, moisture content≤50%, BaSO4Content >=10%.
More preferably, aforementioned cement uses ordinary portland cement, and fineness was 0.075mm negative pressure sieve, and screen over-size is 0.5-2.0%。
It is highly preferred that the fineness modulus of aforementioned fine sand is 0.8-1.5, SiO2Content >=60%.
It is further preferred that the fineness of aforementioned flyash was 0.075 negative pressure sieve, screen over-size 10-25%, SiO2Contain Amount >=30%.
Specifically, the fineness of aforementioned quick lime was that 0.075mm negative pressure is sieved, screen over-size 10-25%, CaO content >= 60%。
Preferably, aforementioned gypsum is the natural gypsum or desulfurized gypsum.
The invention has the beneficial effects that:
(1) present invention realizes the high value added utilization of lead zinc tailings, reduces production cost, and improve air entrained concrete Shielding property；
(2) it is barite source material that the present invention, which has chosen Pb-Zn tailings, and Pb-Zn tailings discharge is wet row, and it is mixed to be used to prepare aerating It does not need to carry out drying and processing when solidifying soil, can directly carry out wet-milling, therefore a large amount of production time can be saved, and reduce production Cost；
(3) Pb-Zn tailings in the present invention can be to provide barite source and part SiO2；Cement can provide for air entrained concrete Main calcareous material provides support strength when resting after getting angry；Lime and cement cooperation can provide the efficient oxidation calcium, make Under hydrothermal conditions with the SiO in siliceous material2、Al2O3Effect produces hydrated calcium silicate；Gypsum is the adjusting for the process of getting angry Agent is mainly reflected in and delays to quick lime resolution and slurry bodying velocity；Aluminium powder cream utilizes raw with the alkali of lime and reactive aluminum At a large amount of hydrogen, push slurry expansion, at the end of getting angry, slurry thickening terminates, so that slurry is formed porous state, thus reach every Hot heat preservation, sound insulation, light effect.
Specific embodiment
Below in conjunction with detailed description of the invention by specific embodiments.
A kind of radiation protection air entrained concrete containing Pb-Zn tailings, including following each component by mass percentage: lead zinc Tailing 5-20%, cement 5-15%, fine sand 10-40%, flyash 10-40%, quick lime 10-20%, gypsum 1-5% and aluminium powder cream 0.05-0.10%。
Pb-Zn tailings use Pb-Zn deposits tailing disposal, moisture content≤50%, BaSO4Content >=10%；Cement is using general Logical portland cement, fineness were 0.075mm negative pressure sieve, screen over-size 0.5-2.0%；The fineness modulus of fine sand is 0.8-1.5, Its SiO2Content >=60%；The fineness of flyash was 0.075 negative pressure sieve, screen over-size 10-25%, SiO2Content >=30%；It is raw The fineness of lime was 0.075mm negative pressure sieve, screen over-size 10-25%, CaO content >=60%；Gypsum is the natural gypsum or takes off Sulphur gypsum.
Embodiment 1
A kind of radiation protection air entrained concrete containing Pb-Zn tailings, including following each component by mass percentage: Pb-Zn tailings 5%, cement 5%, fine sand 10%, flyash 10%, quick lime 10%, gypsum 1% and aluminium powder cream 0.05%.
Embodiment 2
A kind of radiation protection air entrained concrete containing Pb-Zn tailings, including following each component by mass percentage: Pb-Zn tailings 20%, cement 15%, fine sand 40%, flyash 40%, quick lime 20%, gypsum 5% and aluminium powder cream 0.10%.
Embodiment 3
A kind of radiation protection air entrained concrete containing Pb-Zn tailings, including following each component by mass percentage: Pb-Zn tailings 10%, cement 10%, fine sand 20%, flyash 25%, quick lime 15%, gypsum 3% and aluminium powder cream 0.07%.
Embodiment 4
A kind of radiation protection air entrained concrete containing Pb-Zn tailings, including following each component by mass percentage: Pb-Zn tailings 15%, cement 10%, fine sand 30%, flyash 20%, quick lime 18%, gypsum 2% and aluminium powder cream 0.08%.
Comparative example
Select commercially available normal concrete.
Performance detection test
To the basic performance indices and radioactivity screen of the radiation protection air entrained concrete of the Pb-Zn tailings in embodiment 1 ~ 4 and comparative example The rate of covering is detected, and testing result is as follows:
It is carried out in the γ of kalium-40, thorium -232, radium-226 specific activity and sample in test using radioactivity detector for building materials Outreach services measurement.Heavy metal passes in and out detection method according to GB 5085.3-2007 " hazardous waste judging standard ", and uses Inductivity coupled plasma mass spectrometry (ICP-MS) measures Pb, Zn constituent content in leachate.
As shown in table 1, in air entrained concrete test block prepared in embodiment 1 ~ 4, compression strength is substantially distributed in 3.30MPa or more, all test blocks are up to state standards (B06 grades of aerated concrete compressive strength P >=3.50MPa), can meet Industrial production demand, each test block radioactive shield rate rate reaches 20% or more, and Pb, Zn Elements Leaching rate comply fully with GB 5085.3-2007 " hazardous waste judging standard " requirement can be used as building materials use, and properties are above common commercially available coagulation Soil.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation Technical solution is fallen within the scope of protection of the present invention.

Claims (7)

1. a kind of radiation protection air entrained concrete containing Pb-Zn tailings, which is characterized in that including following by mass percentage each Component: Pb-Zn tailings 5-20%, cement 5-15%, fine sand 10-40%, flyash 10-40%, quick lime 10-20%, gypsum 1-5% and Aluminium powder cream 0.05-0.10%.
2. a kind of radiation protection air entrained concrete containing Pb-Zn tailings according to claim 1, which is characterized in that the lead zinc Tailing uses Pb-Zn deposits tailing disposal, moisture content≤50%, BaSO4Content >=10%.
3. a kind of radiation protection air entrained concrete containing Pb-Zn tailings according to claim 1, which is characterized in that the cement Using ordinary portland cement, fineness was 0.075mm negative pressure sieve, screen over-size 0.5-2.0%.
4. a kind of radiation protection air entrained concrete containing Pb-Zn tailings according to claim 1, which is characterized in that the fine sand Fineness modulus be 0.8-1.5, SiO2Content >=60%.
5. a kind of radiation protection air entrained concrete containing Pb-Zn tailings according to claim 1, which is characterized in that the fine coal The fineness of ash was 0.075 negative pressure sieve, screen over-size 10-25%, SiO2Content >=30%.
6. a kind of radiation protection air entrained concrete containing Pb-Zn tailings according to claim 1, which is characterized in that the raw stone The fineness of ash was 0.075mm negative pressure sieve, screen over-size 10-25%, CaO content >=60%.
7. a kind of radiation protection air entrained concrete containing Pb-Zn tailings according to claim 1, which is characterized in that the gypsum For the natural gypsum or desulfurized gypsum.
CN201910469205.7A 2019-05-31 2019-05-31 A kind of radiation protection air entrained concrete containing Pb-Zn tailings Pending CN110204276A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110590312A (en) * 2019-10-24 2019-12-20 厦门美益集团有限公司 Non-sintered brick based on tailing solution and manufacturing process
CN112695949A (en) * 2020-12-17 2021-04-23 泰安欧士达环保材料有限公司 Autoclaved aerated concrete radiation-proof plate and production process thereof
CN113501686A (en) * 2021-07-12 2021-10-15 湖北工业大学 Radiation-proof functional gradient concrete slab and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2637655B2 (en) * 1991-11-12 1997-08-06 義之 大串 Coating material for radio wave absorption
CN101693384A (en) * 2009-09-29 2010-04-14 中博建设集团有限公司 Method of utilizing Pb-Zn tailings for preparing B05 grade self-energy-saving aerated concrete
CN103342510A (en) * 2013-07-02 2013-10-09 江苏华东尾矿治理工程有限公司 Method for preparing aerated concrete by utilizing lead zinc tailings
CN104987014A (en) * 2015-07-25 2015-10-21 福州大学 Radiation-shielding concrete adopting lead-zinc tailings as raw material and preparation method therefor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2637655B2 (en) * 1991-11-12 1997-08-06 義之 大串 Coating material for radio wave absorption
CN101693384A (en) * 2009-09-29 2010-04-14 中博建设集团有限公司 Method of utilizing Pb-Zn tailings for preparing B05 grade self-energy-saving aerated concrete
CN103342510A (en) * 2013-07-02 2013-10-09 江苏华东尾矿治理工程有限公司 Method for preparing aerated concrete by utilizing lead zinc tailings
CN104987014A (en) * 2015-07-25 2015-10-21 福州大学 Radiation-shielding concrete adopting lead-zinc tailings as raw material and preparation method therefor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
陈智华等: "铅锌尾矿制备加气混凝土的试验研究", 《建材世界》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110590312A (en) * 2019-10-24 2019-12-20 厦门美益集团有限公司 Non-sintered brick based on tailing solution and manufacturing process
CN112695949A (en) * 2020-12-17 2021-04-23 泰安欧士达环保材料有限公司 Autoclaved aerated concrete radiation-proof plate and production process thereof
CN113501686A (en) * 2021-07-12 2021-10-15 湖北工业大学 Radiation-proof functional gradient concrete slab and preparation method thereof
CN113501686B (en) * 2021-07-12 2022-02-15 湖北工业大学 Radiation-proof functional gradient concrete slab and preparation method thereof

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Application publication date: 20190906