CN108558243A - A kind of clay hardening agent and preparation method thereof - Google Patents

A kind of clay hardening agent and preparation method thereof Download PDF

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Publication number
CN108558243A
CN108558243A CN201711446871.6A CN201711446871A CN108558243A CN 108558243 A CN108558243 A CN 108558243A CN 201711446871 A CN201711446871 A CN 201711446871A CN 108558243 A CN108558243 A CN 108558243A
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CN
China
Prior art keywords
clay
red mud
hardening agent
metakaolin
gypsum
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
CN201711446871.6A
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Chinese (zh)
Inventor
薛强
张亭亭
李江山
陈亿军
万勇
魏明俐
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.)
Wuhan Institute of Rock and Soil Mechanics of CAS
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Wuhan Institute of Rock and Soil Mechanics of CAS
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 Wuhan Institute of Rock and Soil Mechanics of CAS filed Critical Wuhan Institute of Rock and Soil Mechanics of CAS
Priority to CN201711446871.6A priority Critical patent/CN108558243A/en
Publication of CN108558243A publication Critical patent/CN108558243A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B7/00Hydraulic cements
    • C04B7/24Cements from oil shales, residues or waste other than slag
    • C04B7/243Mixtures thereof with activators or composition-correcting additives, e.g. mixtures of fly ash and alkali activators
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00Technologies relating to the processing of minerals
    • Y02P40/10Production of cement, e.g. improving or optimising the production methods; Cement grinding

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The present invention relates to a kind of clay hardening agent and preparation method thereof, including:Red mud, metakaolin, carbide slag and gypsum, wherein the mass ratio of clay hardening agent each component is:Red mud is 50 70 parts, 10 20 parts of metakaolin, 5 15 parts of battery slag, 5 10 parts of gypsum.The clay hardening agent and preparation method thereof uses solid waste for primary raw material, the solidification that clay is realized using solid waste chemical property itself and mutual activity excitation has the characteristics that non-secondary pollution, of low cost, preparation is convenient and resource utilization is high.

Description

A kind of clay hardening agent and preparation method thereof
Technical field
The present invention relates to field of environment engineering technology, more particularly to a kind of clay hardening agent and preparation method thereof.
Background technology
With the iterative method of China's industrialization and urbanization, domestic waste problem is concerned by people further. Garbage-surrounded city phenomenon is very prominent, Domestic Waste Minimization, innoxious extremely urgent with recycling treatment.Currently, garbage loading embeading It is the main disposal options of China's house refuse.Due to China's house refuse complicated component,
Rubbish after landfill is in H2O and O2Under the action of be decomposed to form a large amount of percolates, research shows that main in landfill leachate 63 kinds of organic pollution and various heavy metal contaminants are wanted, ecological environment security around landfill yard and resident's health are caused Great threat.Clay compaction impervious barrier is one of common percolate impervious barrier, to improve the impermeability and durability of argillic horizon, Inorganic coagulation material (cement, lime, flyash) etc. is common to do clay lenses additive.
Inorganic coagulation material treated clay has that of high cost, infiltration coefficient is big, intensity is low and durable in the prior art Property it is poor the shortcomings of, in addition, the productions such as inorganic coagulation materials such as cement have the drawbacks such as high energy consumption, high pollution.
Invention content
The present invention provides a kind of clay hardening agent and preparation method thereof, solve or part solve in the prior art without Machine cementitious material treated clay has technical problem of high cost, infiltration coefficient is big, intensity is low and durability is poor.
A kind of clay hardening agent provided by the invention, including:Red mud, metakaolin, carbide slag and gypsum, wherein described The mass ratio of clay hardening agent each component is:The red mud be 50-70 parts, described metakaolin 10-20 parts, the battery slag 5- 15 parts, described gypsum 5-10 parts.
Based on same inventive concept, present invention also provides a kind of preparation methods of clay hardening agent, are used to prepare institute Clay hardening agent is stated, is included the following steps:
After washing by the red mud, it is dried under the conditions of 60 DEG C, ball milling simultaneously sieves with 100 mesh sieve;Wherein, in the red mud CaO content is higher than 30%, Al2O3Content is higher than 10%;
The metakaolin is dried under the conditions of 60 DEG C, through ball milling and is sieved with 100 mesh sieve;
The carbide slag is dried under the conditions of 60 DEG C, through ball milling and is sieved with 100 mesh sieve, the content of CaO in the carbide slag More than 65%;
The gypsum is dried under the conditions of 60 DEG C, through ball milling and is sieved with 100 mesh sieve;
At normal temperatures, the red mud, the metakaolin, the carbide slag and the gypsum are uniformly mixed described in being formed Clay hardening agent.
One or more technical solutions provided herein, have at least the following technical effects or advantages:
Red mud avoids shadow of the soluble-salt to follow-up hydration reaction by washing, effectively removing soluble-salt therein It rings, improves gelling reaction intensity, carbide slag can guarantee the activating oxide in red mud, metakaolin and gypsum, the silicon of generation Calcium aluminate gel can realize the solidification of clay, and clay particle is made to reunite, and enhance the cohesive force between clay particle, reduce clay Pore volume, make the clay after disposition have higher-strength, lower permeability and good long-time stability.The curing agent It uses industrial residue for primary raw material, clay is realized using industrial residue chemical property itself and mutual activity excitation Solidification has the characteristics that of low cost, resource utilization is high and disposition effect is good.In this way, efficiently solve in the prior art without Machine cementitious material treated clay has technical problem of high cost, infiltration coefficient is big, intensity is low and durability is poor, realizes Intensity is high, infiltration coefficient is low and long-time stability are good, and prepare convenient, of low cost and low stain, low energy consumption technique effect.
Description of the drawings
Fig. 1 is the flow diagram of the preparation method of clay hardening agent provided by the invention.
Specific implementation mode
Clay hardening agent provided by the embodiments of the present application and preparation method thereof, solves or part solves in the prior art Inorganic coagulation material treated clay has technical problem of high cost, infiltration coefficient is big, intensity is low and durability is poor.
A kind of clay hardening agent provided by the invention, including:Red mud, metakaolin, carbide slag and gypsum, wherein clay The mass ratio of curing agent each component is:Red mud is 50-70 parts, 10-20 parts of metakaolin, 5-15 parts of battery slag, 5-10 parts of gypsum.
Based on same inventive concept, referring to attached drawing 1, present invention also provides a kind of preparation method of clay hardening agent, It is used to prepare clay hardening agent, is included the following steps:
S1:After washing by red mud, it is dried under the conditions of 60 DEG C, ball milling simultaneously sieves with 100 mesh sieve;Wherein, CaO content in red mud Higher than 30%, Al2O3Content is higher than 10%.
S2:Metakaolin is dried under the conditions of 60 DEG C, through ball milling and is sieved with 100 mesh sieve.
S3:Carbide slag is dried under the conditions of 60 DEG C, through ball milling and is sieved with 100 mesh sieve, the content of CaO is more than in carbide slag 65%.
S4:Gypsum is dried under the conditions of 60 DEG C, through ball milling and is sieved with 100 mesh sieve.
S5:At normal temperatures, red mud, metakaolin, carbide slag and gypsum are uniformly mixed and form clay hardening agent.
Clay hardening agent provided by the present application and preparation method thereof is discussed in detail below by specific embodiment:
Case study on implementation 1
The red mud that CaO content is 32% is chosen, red mud is cleaned with tap water, then is dried under the conditions of 60 DEG C, using ball Grinding machine sieves with 100 mesh sieve rock phosphate in powder ball milling.The carbide slag that CaO content is 68% is dried under the conditions of 60 DEG C, simultaneously through ball milling It sieves with 100 mesh sieve.Gypsum and metakaolin are dried under the conditions of 60 DEG C, through ball milling and sieved with 100 mesh sieve.
Weigh that treated respectively red mud 60kg, metakaolin 15kg, carbide slag 15kg, gypsum 10kg, is uniformly mixed shape Resulting mixture forms curing agent.The curing agent additive amount is the 10%-30% of clay quality.
Case study on implementation 2
The red mud that CaO content is 35% is chosen, red mud is cleaned with tap water, then is dried under the conditions of 60 DEG C, using ball Grinding machine sieves with 100 mesh sieve rock phosphate in powder ball milling.The carbide slag that CaO content is 72% is dried under the conditions of 60 DEG C, simultaneously through ball milling It sieves with 100 mesh sieve.Gypsum and metakaolin are dried under the conditions of 60 DEG C, through ball milling and sieved with 100 mesh sieve.
Weigh that treated respectively red mud 70kg, metakaolin 15kg, carbide slag 10kg, gypsum 5kg, is uniformly mixed and is formed Mixture forms curing agent.The curing agent additive amount is the 10%-30% of clay quality.
Case study on implementation 3
The red mud that CaO content is 38% is chosen, red mud is cleaned with tap water, then is dried under the conditions of 60 DEG C, using ball Grinding machine sieves with 100 mesh sieve rock phosphate in powder ball milling.The carbide slag that CaO content is 76% is dried under the conditions of 60 DEG C, simultaneously through ball milling It sieves with 100 mesh sieve.Gypsum and metakaolin are dried under the conditions of 60 DEG C, through ball milling and sieved with 100 mesh sieve.
Weigh that treated respectively red mud 55kg, metakaolin 20kg, carbide slag 15kg, gypsum 10kg, is uniformly mixed shape Resulting mixture forms curing agent.The curing agent additive amount is the 10%-30% of clay quality.
One or more technical solutions provided herein, have at least the following technical effects or advantages:
Red mud avoids shadow of the soluble-salt to follow-up hydration reaction by washing, effectively removing soluble-salt therein It rings, improves gelling reaction intensity, carbide slag can guarantee the activating oxide in red mud, metakaolin and gypsum, the silicon of generation Calcium aluminate gel can realize the solidification of clay, and clay particle is made to reunite, and enhance the cohesive force between clay particle, reduce clay Pore volume, make the clay after disposition have higher-strength, lower permeability and good long-time stability.The curing agent It uses industrial residue for primary raw material, clay is realized using industrial residue chemical property itself and mutual activity excitation Solidification has the characteristics that of low cost, resource utilization is high and disposition effect is good.In this way, efficiently solve in the prior art without Machine cementitious material treated clay has technical problem of high cost, infiltration coefficient is big, intensity is low and durability is poor, realizes Intensity is high, infiltration coefficient is low and long-time stability are good, and prepare convenient, of low cost and low stain, low energy consumption technique effect.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not limited to this hair Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention Protection domain within.

Claims (2)

1. a kind of clay hardening agent, which is characterized in that including:Red mud, metakaolin, carbide slag and gypsum, wherein the clay The mass ratio of curing agent each component is:The red mud be 50-70 parts, described metakaolin 10-20 parts, the battery slag 5-15 Part, described gypsum 5-10 parts.
2. a kind of preparation method of clay hardening agent, which is characterized in that it is used to prepare clay hardening agent described in claim 1, Include the following steps:
After washing by the red mud, it is dried under the conditions of 60 DEG C, ball milling simultaneously sieves with 100 mesh sieve;Wherein, CaO contains in the red mud Amount is higher than 30%, Al2O3Content is higher than 10%;
The metakaolin is dried under the conditions of 60 DEG C, through ball milling and is sieved with 100 mesh sieve;
The carbide slag is dried under the conditions of 60 DEG C, through ball milling and is sieved with 100 mesh sieve, the content of CaO is more than in the carbide slag 65%;
The gypsum is dried under the conditions of 60 DEG C, through ball milling and is sieved with 100 mesh sieve;
At normal temperatures, the red mud, the metakaolin, the carbide slag and the gypsum are uniformly mixed and form the clay Curing agent.
CN201711446871.6A 2017-12-27 2017-12-27 A kind of clay hardening agent and preparation method thereof Pending CN108558243A (en)

Priority Applications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113185980A (en) * 2021-04-09 2021-07-30 太原理工大学 Lead-polluted soil curing agent combining red mud, carbide slag and phosphogypsum and preparation method thereof
CN115340321A (en) * 2022-09-20 2022-11-15 河南省交通规划设计研究院股份有限公司 Composite soil curing agent and preparation method thereof
CN116477915A (en) * 2023-04-10 2023-07-25 中国科学院武汉岩土力学研究所 Micro powder curing agent for reinforcing and regenerating sea sludge and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104098281A (en) * 2013-04-03 2014-10-15 神华集团有限责任公司 Geopolymer composition, geopolymer material and preparation method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104098281A (en) * 2013-04-03 2014-10-15 神华集团有限责任公司 Geopolymer composition, geopolymer material and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王维波: "低渗-特低渗裂缝性油藏地质聚合物封窜堵漏技术", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113185980A (en) * 2021-04-09 2021-07-30 太原理工大学 Lead-polluted soil curing agent combining red mud, carbide slag and phosphogypsum and preparation method thereof
CN115340321A (en) * 2022-09-20 2022-11-15 河南省交通规划设计研究院股份有限公司 Composite soil curing agent and preparation method thereof
CN116477915A (en) * 2023-04-10 2023-07-25 中国科学院武汉岩土力学研究所 Micro powder curing agent for reinforcing and regenerating sea sludge and preparation method thereof

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Application publication date: 20180921