CN109534700A - A kind of steel slag modifying agent and preparation method thereof - Google Patents

A kind of steel slag modifying agent and preparation method thereof Download PDF

Info

Publication number
CN109534700A
CN109534700A CN201811488012.8A CN201811488012A CN109534700A CN 109534700 A CN109534700 A CN 109534700A CN 201811488012 A CN201811488012 A CN 201811488012A CN 109534700 A CN109534700 A CN 109534700A
Authority
CN
China
Prior art keywords
steel slag
modifying agent
agent
slag modifying
steel
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.)
Granted
Application number
CN201811488012.8A
Other languages
Chinese (zh)
Other versions
CN109534700B (en
Inventor
温仁付
甘勇强
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.)
Fujian Furun Building Materials Polytron Technologies Inc
Original Assignee
Fujian Furun Building Materials Polytron Technologies Inc
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 Fujian Furun Building Materials Polytron Technologies Inc filed Critical Fujian Furun Building Materials Polytron Technologies Inc
Priority to CN201811488012.8A priority Critical patent/CN109534700B/en
Publication of CN109534700A publication Critical patent/CN109534700A/en
Application granted granted Critical
Publication of CN109534700B publication Critical patent/CN109534700B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C04B5/00Treatment of  metallurgical  slag ; Artificial stone from molten  metallurgical  slag 

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention belongs to steel slag modifying agent preparation technical fields, and in particular to a kind of steel slag modifying agent and preparation method thereof.The steel slag modifying agent includes each component of following weight percent: polyacrylamide 10-30%, ethylenediamine tetra-acetic acid 8-25%, activating agent 20-50%, coupling agent 5-30%, dispersing agent 3-12%.Steel slag modifying agent provided by the invention can be substantially reduced the free calcium oxide content in steel slag.

Description

A kind of steel slag modifying agent and preparation method thereof
Technical field
The invention belongs to steel slag modifying agent preparation technical fields, and in particular to a kind of steel slag modifying agent and preparation method thereof.
Background technique
The impurity in slag former and molten steel that steel slag is added when being using converter or electric furnace steel making, furnace lining formed with silicic acid The solid waste as main component such as salt, ferrite.Due to property (chemical component, mineral composition and the main physics of steel slag Performance) it is influenced by many factors such as the methods of furnace charge, the steel grade of melting and operation, it changes greatly, so without especially effectively Method can directly handle.Many iron and steel enterprises only simply recycle the metal resource in steel slag, and remaining tailings then can not " zero-emission " is fully achieved, the No.1 problem of smelting iron and steel factory fixed-end forces is become.
The chemical component of steel slag, mineral composition with the technique (converter, electric arc furnaces, refining furnace) of steel-making, melting steel grade etc. because The difference of element and change, but main chemical compositions have CaO, SiO2, Al2O3、FeO、Fe2O3、MgO、MnO、P2O5、f-CaO、Fe Deng steel slag is similar with chemistry and the minerals composition of common cementitious material such as Portland clinker, slag and flyash, by it There is certain gel active after levigate, therefore, steel slag is used to prepare cement concrete material etc. frequently as auxiliary gel rubber material.But Directly steel slag and clinker are mixed in use, leading to the peace for influencing mixing material since it has the problems such as activity is low The performances such as qualitative, structural stability.
So in actual production being used after being first modified to steel slag, than utilizing lime, electric furnace also if any scholar Modification is reconstructed to steel slag in former slag, slag, cinder, flyash etc., and steel slag mine facies evolution is advised during having studied high-temperature reconstruction The variation of rule and gelling property finds that the calcareous material that adjusts can promote to reconstruct the formation of A mine and B mine in steel slag;Calcium alumina-silica Adjusting material can preferably promote to reconstruct the formation of calcium silicates and calcium aluminoferrite in steel slag, significantly improve the gelling of reconstruct steel slag Activity;Sa, which adjusts material, can promote the absorption of f-CaO, increase the content of aluminium mineral material in reconstruct steel slag.
There are also scholars to use direct-reduction process and smelting reduction process to steel slag by the high temperature furnace of installation nitrogen protection device Modification is reconstructed, not only by Fe in RO phase in steel slag and liquid phase2O3It is reduced into metallic iron, the gelation activity of modified steel scoria is also It significantly improves.
But above-mentioned method of modifying is higher to performance requirements such as the corrosion resistances of equipment, and complex process, so that steel slag Cost is recycled to improve;There is patent CN107487999A to disclose to be modified using performance of the steel slag modifying agent to steel slag, change The activity and chemical stability of steel-making slag powder after property are good and at low cost, non-corrosive.But the steel slag after this modifier modification The content of middle free calcium is still higher, is unable to satisfy the needs of actual production.
Summary of the invention
In order to solve the above problem in the prior art, the present invention first purpose is that providing one kind can obviously drop Low content of free calcium oxide in steel slag, the steel slag modifying agent for improving activity of steel slag.
Another goal of the invention of the invention is to provide the preparation method of the steel slag modifying agent.
In order to achieve the above-mentioned object of the invention, the present invention provides the following technical scheme that
A kind of steel slag modifying agent comprising each component of following weight percent: polyacrylamide 10-30%, ethylenediamine Tetraacethyl 8-25%, activating agent 20-50%, coupling agent 5-30%, dispersing agent 3-12%.
Preferably, the steel slag modifying agent comprising each component of following weight percent: polyacrylamide 10-25%, Ethylenediamine tetra-acetic acid 8-18%, activating agent 25-50%, coupling agent 8-30%, dispersing agent 5-12%.
Preferably, the activating agent is ethylene glycol dimethacrylate, triethanolamine, diethanol monoisopropanolamine, three Glycol dimethylacrylate, ethylene glycol dimethacrylate, polyoxypropyleneglycol, polytetrahydrofuran diol and tetrahydro furan One or more of mutter-propylene oxide copolymer glycols.
Preferably, the coupling agent is silane coupling agent 3- TSL 8330, gamma-aminopropyl-triethoxy Silane, N- (β-aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane, 3- (methacryloxypropyl) propyl trimethoxy silicane, One or more of vinyltrimethoxysilane and vinyltriethoxysilane.
It is further preferred that the coupling agent is 3- TSL 8330, gamma-aminopropyl-triethoxy silicon In alkane, N- (β-aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane and 3- (methacryloxypropyl) propyl trimethoxy silicane One or more.
Preferably, the dispersing agent is carbon black, calcium stearate, sodium lignin sulfonate and its modifier, hydroxyethyl cellulose One or more of with neopelex.
It is further preferred that the dispersing agent is the mixture of carbon black and sodium lignin sulfonate.Wherein, carbon black has similar The porous structure of active carbon, while there is a large amount of surface functional group again, these surface functional groups and sulfomethylated lignin can be passed through Sour sodium plays connection function jointly, and " absorption " plays the role of flexible connection material on the other auxiliary agent surfaces of modifying agent.
It is further preferred that the ratio that the dispersing agent is carbon black and sodium lignin sulfonate is 1-8:1.
When the ratio of carbon black and sodium lignin sulfonate within the above range when, steel slag modifying agent, which can significantly improve, changes steel slag Activity;When exceeding above range, the activity of modified steel slag is without significant change.
Preferably, the preparation method of the sodium lignin sulfonate modifier includes the following steps: that choosing molecular weight is 5000- 7000 sodium lignin sulfonate is boiled 1-4 hours under the conditions of 80-150 DEG C with acid solution tune pH to 4-6, is filtered, and gained filtrate is cold Dry rear as modified sodium lignosulfonate is lyophilized.
The present invention also provides a kind of preparation methods of above-mentioned steel slag modifying agent comprising following steps:
Vapor stir process 1- will be passed through under the conditions of 120-220 DEG C after mixing by weight weighed each component It 3 hours, is then cooled to 60-80 DEG C, mixes to quality and no longer change, be cooled to room temperature to obtain the final product.
Compared with prior art, the beneficial effects of the present invention are:
1) steel slag modifying agent provided by the invention can be in significantly accelerated free calcium oxide, free magnesium and steel-making slag powder Acidic oxidation closes object and synthesizes C2S、C3S、C3A、C3The mineral such as AF, to effectively reduce free oxide (free- in steel-making slag powder Ca0, Mg0) presence;Test result measurement shows that the steel slag modification that 1-4 of the embodiment of the present invention is provided can make the trip in steel slag 45% or more is reduced from magnesia;
2) when the steel-making slag powder doping after steel slag modifier modification provided by the invention reaches 30%, cement matrix is 28 It when mechanical property substantially close to cement matrix.
Specific embodiment
To keep purpose and the technical solution of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention, to this The technical solution of invention is clearly and completely described.
Embodiment 1
A kind of steel slag modifying agent comprising each component of following weight percent:
Polyacrylamide 30%, ethylenediamine tetra-acetic acid 25%, ethylene glycol dimethacrylate 23%, 3- aminopropyl three Methoxy silane 10%, neopelex 12%.
The preparation method of the steel slag modifying agent includes the following steps:
It is small vapor stir process 1.5 will to be passed through under the conditions of 200 DEG C after mixing by weight weighed each component When, it is then cooled to 60 DEG C, mixes to quality and no longer change, be cooled to room temperature to obtain the final product.
Embodiment 2
A kind of steel slag modifying agent comprising each component of following weight percent:
Polyacrylamide 15%, ethylenediamine tetra-acetic acid 12%, polyoxypropyleneglycol 24%, diethanol monoisopropanolamine 21%, 3- TSL 8330 23%, calcium stearate 5%.
The preparation method of the steel slag modifying agent includes the following steps:
It will be passed through under the conditions of 180 DEG C after mixing vapor stir process 3 hours by weight weighed each component, Then 60 DEG C are cooled to, quality is mixed to and no longer changes, be cooled to room temperature to obtain the final product.
Embodiment 3
A kind of steel slag modifying agent comprising each component of following weight percent:
Polyacrylamide 15%, ethylenediamine tetra-acetic acid 12%, polyoxypropyleneglycol 24%, diethanol monoisopropanolamine 21%, 3- TSL 8330 23%, carbon black 2%, sodium lignin sulfonate 3%.
The preparation method of the steel slag modifying agent includes the following steps:
It will be passed through under the conditions of 180 DEG C after mixing vapor stir process 3 hours by weight weighed each component, Then 60 DEG C are cooled to, quality is mixed to and no longer changes, be cooled to room temperature to obtain the final product.
Embodiment 4
A kind of steel slag modifying agent comprising each component of following weight percent:
Polyacrylamide 15%, ethylenediamine tetra-acetic acid 12%, polyoxypropyleneglycol 24%, diethanol monoisopropanolamine 21%, vinyltrimethoxysilane 23%, carbon black 2%, sodium lignin sulfonate 3%.
The preparation method of the steel slag modifying agent is substantially the same as embodiment 3.
Comparative example 1
A kind of steel slag modifying agent comprising each component of following weight percent:
Polyacrylamide 15%, ethylenediamine tetra-acetic acid 12%, polyoxypropyleneglycol 24%, diethanol monoisopropanolamine 21%, 3- TSL 8330 23%, carbon black 2%, sodium lignin sulfonate 3%.
The preparation method of the steel slag modifying agent includes the following steps:
By weighed each component by weight and the water of 10 weight % of modifying agent is equivalent to after mixing in 180 DEG C of conditions Lower stirring, is then cooled to 60 DEG C, mixes to quality and no longer changes, is cooled to room temperature to obtain the final product.
Comparative example 2
A kind of steel slag modifying agent comprising each component of following weight percent:
Polyacrylamide 29%, ethylenediamine tetra-acetic acid 12%, polyoxypropyleneglycol 10%, diethanol monoisopropanolamine 21%, 3- TSL 8330 23%, carbon black 2%, sodium lignin sulfonate 3%.
The preparation method of the steel slag modifying agent is substantially the same as embodiment 3.
Comparative example 3
A kind of discarded Steel-slag replaces the steel slag modifying agent of clinker, is formulated by weight by following compositions: by 10% sulphur Sodium thiosulfate, 5% sodium acetate, 7% modified triethanolamine, 3% white sugar, 5% ammonium acetate, 2% sodium formate, 10% Glycerol, 5% molasses, 2% dispersing agent and 51% water after mixing, obtain steel slag modifying agent.
Effect test
1, influence of the steel slag modifying agent to free calcium in steel slag is tested
Steel slag modifying agent 1:1 in mass ratio made from dried steel-making slag powder and embodiment 1-4, comparative example 1-3 is mixed Mixture is formed, then 800 DEG C of constant temperature are cooled to room temperature after being heat-treated two hours, then use the measuring method of free calcium oxide (" steel slag is modified and its right with reference to Master's thesis for specific detecting step for the content of free calcium in each aggregate sample of (glycol method) measurement Cement matrix performance influences experimental study ").Record the percentage composition decreasing value of free calcium oxide in different aggregate samples.As a result such as Shown in the following table 1.
Influence of the 1 steel slag modifying agent of table to free calcium in steel slag
Heat treated sample F-Ca0 reduces percentage amounts (%)
The mixture of steel-making slag powder and embodiment 1 47.22
The mixture of steel-making slag powder and embodiment 2 47.31
The mixture of steel-making slag powder and embodiment 3 52.15
The mixture of steel-making slag powder and embodiment 4 51.76
The mixture of steel-making slag powder and comparative example 1 33.45
The mixture of steel-making slag powder and comparative example 2 45.39
The mixture of steel-making slag powder and comparative example 3 35.22
As can be seen from the data in the table, through steel slag modifying agent made from embodiment to the content of free calcium oxide in steel slag Reduction degree is above comparative example, the best performance of steel slag modifying agent as made from embodiment 3.
2, influence of the modified steel-making slag powder to Mechanical Properties of Cement-based Materials
According to detection method disclosed in Master's thesis " steel slag is modified and its influences experimental study to cement matrix performance ", To the steel-making slag powder after steel slag modifier modification made from the embodiment of the present application 1-4, comparative example 1-3 to Mechanical Properties of Cement-based Materials Influence.Statistical test result (doping of modified steel-making slag powder is 30% in mixed material), such as the following table 2.
Influence of the modified steel-making slag powder of table 2 to cement material compression strength
As can be seen from the data in the table, as time went on, compression strength of the cement-based material in 28d reaches maximum Value, substantially close to the mechanical property of cement matrix.
The above is only embodiments of the present invention, and the description thereof is more specific and detailed, and but it cannot be understood as right The limitation of the invention patent range.It should be pointed out that for those of ordinary skill in the art, not departing from the present invention Under the premise of design, various modifications and improvements can be made, these are all belonged to the scope of protection of the present invention.

Claims (9)

1. a kind of steel slag modifying agent comprising each component of following weight percent: polyacrylamide 10-30%, ethylenediamine tetraacetic Acetic acid 8-25%, activating agent 20-50%, coupling agent 5-30%, dispersing agent 3-12%.
2. steel slag modifying agent according to claim 1 comprising each component of following weight percent: polyacrylamide 10-25%, ethylenediamine tetra-acetic acid 8-18%, activating agent 25-50%, coupling agent 8-30%, dispersing agent 5-12%.
3. steel slag modifying agent according to claim 1 or 2, the activating agent is ethylene glycol dimethacrylate, three second Hydramine, diethanol monoisopropanolamine, triethylene glycol dimethacrylate, ethylene glycol dimethacrylate, polypropylene oxide two Alcohol, poly- tetrahydro two pure and mild tetrahydros of muttering are muttered-one or more of propylene oxide copolymer glycols.
4. steel slag modifying agent according to claim 1 or 2, the coupling agent is silane coupling agent 3- aminopropyl trimethoxy Base silane, gamma-aminopropyl-triethoxy-silane, N- (β-aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane, 3- (methyl-prop One or more of alkene acyl-oxygen) propyl trimethoxy silicane, vinyltrimethoxysilane and vinyltriethoxysilane.
5. steel slag modifying agent according to claim 4, the coupling agent is 3- TSL 8330, γ-ammonia Propyl-triethoxysilicane, N- (β-aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane and 3- (methacryloxypropyl) propyl One or more of trimethoxy silane.
6. steel slag modifying agent according to claim 1 or 2, the dispersing agent is carbon black, calcium stearate, sodium lignin sulfonate And its one or more of modifier, hydroxyethyl cellulose and neopelex.
7. steel slag modifying agent according to claim 6, the dispersing agent is the mixture of carbon black and sodium lignin sulfonate.
8. steel slag modifying agent according to claim 7, the dispersing agent is that the ratio of carbon black and sodium lignin sulfonate is 1- 8:1。
9. a kind of preparation method for preparing the steel slag modifying agent as described in any one of claim 1-8 comprising following steps:
It is small vapor stir process 1-3 will to be passed through under the conditions of 120-220 DEG C after mixing by weight weighed each component When, it is then cooled to 60-80 DEG C, mixes to quality and no longer change, be cooled to room temperature to obtain the final product.
CN201811488012.8A 2018-12-06 2018-12-06 Steel slag modifier and preparation method thereof Active CN109534700B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811488012.8A CN109534700B (en) 2018-12-06 2018-12-06 Steel slag modifier and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811488012.8A CN109534700B (en) 2018-12-06 2018-12-06 Steel slag modifier and preparation method thereof

Publications (2)

Publication Number Publication Date
CN109534700A true CN109534700A (en) 2019-03-29
CN109534700B CN109534700B (en) 2020-01-10

Family

ID=65854099

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811488012.8A Active CN109534700B (en) 2018-12-06 2018-12-06 Steel slag modifier and preparation method thereof

Country Status (1)

Country Link
CN (1) CN109534700B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113354380A (en) * 2021-06-28 2021-09-07 武汉理工大学 Solid waste base thermal coagulation promoting 3D printing material and 3D printing forming method thereof
CN114014564A (en) * 2021-11-17 2022-02-08 安徽海螺新材料科技有限公司 Steel slag activator and preparation method and application thereof
CN114230219A (en) * 2021-12-02 2022-03-25 电子科技大学长三角研究院(湖州) Preparation method and application of novel steel slag composite exciting agent

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5478392A (en) * 1991-10-23 1995-12-26 Pelt & Hooykaas B.V. Porous granulated steel slag composition and use of such as aggregate or cement replacement in building materials, road building and embankment
CN103253876A (en) * 2013-04-25 2013-08-21 南京工业大学 Activating grinding aid for steel slag micro-powder, and preparation method thereof
CN106977127A (en) * 2017-02-22 2017-07-25 清华大学 A kind of heat-stewed steel slag from converter grinding aid activator and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5478392A (en) * 1991-10-23 1995-12-26 Pelt & Hooykaas B.V. Porous granulated steel slag composition and use of such as aggregate or cement replacement in building materials, road building and embankment
CN103253876A (en) * 2013-04-25 2013-08-21 南京工业大学 Activating grinding aid for steel slag micro-powder, and preparation method thereof
CN106977127A (en) * 2017-02-22 2017-07-25 清华大学 A kind of heat-stewed steel slag from converter grinding aid activator and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113354380A (en) * 2021-06-28 2021-09-07 武汉理工大学 Solid waste base thermal coagulation promoting 3D printing material and 3D printing forming method thereof
CN114014564A (en) * 2021-11-17 2022-02-08 安徽海螺新材料科技有限公司 Steel slag activator and preparation method and application thereof
CN114230219A (en) * 2021-12-02 2022-03-25 电子科技大学长三角研究院(湖州) Preparation method and application of novel steel slag composite exciting agent
CN114230219B (en) * 2021-12-02 2023-09-19 电子科技大学长三角研究院(湖州) Preparation method and application of steel slag composite excitant

Also Published As

Publication number Publication date
CN109534700B (en) 2020-01-10

Similar Documents

Publication Publication Date Title
CN113087420B (en) Stokehole modified steel slag and preparation method thereof
Yang et al. Enhancement of reactivity of calcium hydroxide-activated slag mortars by the addition of barium hydroxide
CN109534700A (en) A kind of steel slag modifying agent and preparation method thereof
CN108569859B (en) Waterproof and impervious concrete additive with self-repairing function and preparation method thereof
CN113998960B (en) Modified micro-nano composite superfine admixture high-durability anti-crack concrete and preparation method thereof
US10807911B2 (en) Concrete composition and production method therefor
CN111977997A (en) Control method for realizing steel slag reduction modification, water-quenched slag and application thereof
CN111302678A (en) In-situ oxidation modified steel slag and preparation method and application thereof
CN111807738A (en) Additive for geopolymer
CN109704620B (en) Concrete admixture suitable for cold and dry environment and preparation method and application thereof
CN114716164A (en) Sulphoaluminate cement with phosphogypsum as main raw material and preparation method thereof
CN112851264A (en) High-temperature-resistant concrete based on iron tailings and steel slag powder
CN111072325B (en) Easy-flowing type composite mineral admixture, preparation method thereof and mortar prepared by adopting admixture
CN107892533A (en) A kind of waterfront structure Grouting Cement mortar and its production method
CN110078392B (en) Method for producing ecological cement by using waste sintered shale brick powder
TWI717625B (en) Manufacturing method of steel slag cementitious material
CN109265041A (en) A kind of high activity slag powders and its preparation process
CN114230219B (en) Preparation method and application of steel slag composite excitant
CN116178033A (en) Method for preparing refractory brick by using aluminum ash and product thereof
CN114163155A (en) Preparation and application of novel improved composite steel slag excitant
CN108558246A (en) A kind of electroslag base mineral admixture and the preparation method and application thereof
CN111689702B (en) Early-strength sulfate-resistant cement
Pacierpnik et al. Application of weathered granulated blast furnace slag as a supplementary cementitious material in concrete
CN109180060B (en) Enhanced concrete expanding agent and preparation method thereof
CN113060971B (en) Composite efficient slag powder grinding aid and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant