CN104725053B - Carbon-free non-slag line material for repairing of refining ladle liner and preparation method thereof - Google Patents

Carbon-free non-slag line material for repairing of refining ladle liner and preparation method thereof Download PDF

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CN104725053B
CN104725053B CN201310694200.7A CN201310694200A CN104725053B CN 104725053 B CN104725053 B CN 104725053B CN 201310694200 A CN201310694200 A CN 201310694200A CN 104725053 B CN104725053 B CN 104725053B
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repairing
fine powder
aggregate
carbon
micro mist
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CN104725053A (en
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邱文冬
韩兵强
崔秀君
柯昌明
何晓俊
李艳华
李楠
欧阳军华
顾汉华
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Shanghai Baosteel Industry Technological Service Co Ltd
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Abstract

The invention discloses a kind of carbon-free non-slag line material for repairing of refining ladle liner and preparation method thereof, i.e., this material for repairing with the alumine aggregate of 50~75w% or corundum aggregate, the corundum fine powder of 10~30w%, the spinelle fine powder of 4~10w%, 0.5~4w% SiO2α-the Al of micro mist, 1~5w%2O3Micro mist, the aluminate cement of 1~5w% and ρ-aluminium oxide or aluminium Silica hydrogel powder are raw material, and the additional raw material weight percentage that accounts for is 0.1~0.2% water-reducing agent and 0.2~1.0% plasticizer；This method stirs above-mentioned each ingredient in blender, and material for repairing is made.This material for repairing adhesiveness and plasticity is good, adhesion strength meets the requirement of ladle after drying and high temperature processing, can be not only used for the serious melting loss position in part for repairing the carbon-free non-slag line of refining ladle liner, it can also be used to large surface mending；This preparation method is simple, easily operated, this material for repairing is conveniently made.

Description

Carbon-free non-slag line material for repairing of refining ladle liner and preparation method thereof
Technical field
The present invention relates to a kind of carbon-free non-slag line material for repairing of refining ladle liner and preparation method thereof.
Background technique
Ladle is initially the transmitting device on molten steel continuous casting work line, in recent years, with external refining and continuous casting technology Development so that smelting temperature and continuous casting ratio are continuously improved, molten steel extended residence time in ladle, especially with ladle into After row double refining, ladle liner be easier by high-temperature steel slag, molten steel erosion and wash away, the use condition of ladle liner is cured Add harshness, constantly declines so as to cause ladle liner service life.With " more long-lived " of ladle system, " functionalization " and " nothing Pollution " has become the theme of ladle system development, its inner lining material is also required to continue to develop, and improves erosion resisting and resistance to punching Brush, to adapt to the variation of smelting condition.
Ladle liner is in use since molten steel corrodes, permeates and washes away etc. and gradually thinning, when the integral thickness of liner Thinning to a certain extent or when part serious melting loss occurs or peels off, ladle must be stopped using to carry out sectional repair or again It builds.Currently, mainly having spray repair, ramming, smearing, set to pour method etc. the repairing method of ladle liner, wherein spray repair is divided into cold conditions again Spray repair and hot spray repair etc..
However, ladle repairing technique is developed so far still incomplete, either the development of repairing technique or material for repairing is all Have very big research and development space, presently, there are main problem be material for repairing adhesion property is unstable, adhesion strength is not high, construction When the convenient, flexible property difference etc. that easily rebounds and construct.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of non-slag line material for repairing of carbon-free refining ladle liner and its Preparation method, this material for repairing adhesiveness and plasticity is good, adhesion strength meets the use of ladle and wants after drying and high temperature processing It asks, can be not only used for the serious melting loss position in part for repairing the carbon-free non-slag line of refining ladle liner, it can also be used to large surface mending；This Preparation method is simple, easily operated, this material for repairing is conveniently made.
In order to solve the above technical problems, the carbon-free non-slag line material for repairing of refining ladle liner of the present invention is with the height of 50~75w% Bauxite aggregate or corundum aggregate, the corundum fine powder of 10~30w%, the spinelle fine powder of 4~10w%, 0.5~4w% SiO2It is micro- α-the Al of powder, 1~5w%2O3Micro mist, the aluminate cement of 1~5w%, ρ-aluminium oxide of 1~5w% or aluminium Silica hydrogel powder are raw material, The additional raw material weight percentage that accounts for is 0.1~0.2% water-reducing agent and 0.2~1.0% plasticizer.
Further, granularity≤8mm of above-mentioned alumine aggregate or corundum aggregate, wherein in alumine aggregate Al2O3Content >=85w%, the Al in corundum aggregate2O3Content >=97w%.
Further, granularity≤0.088mm of above-mentioned corundum fine powder and spinelle fine powder, wherein spinelle fine powder is the trade mark One of No. 70, No. 78 or No. 90 spinelle fine powders, Al2O3Content difference >=68w%, 75w% and 88w%.
Further, above-mentioned SiO2Micro mist and α-Al2O3Granularity≤1 μm of micro mist, wherein SiO2SiO in micro mist2Content >= 94w%。
Further, the Al in above-mentioned aluminate cement, ρ-aluminium oxide and aluminium Silica hydrogel powder2O3Content difference >=70w%, 90w% And 70w%.
Further, above-mentioned water-reducing agent is poly carboxylic acid series water reducer, and above-mentioned plasticizer is lignosulfonates.
A kind of preparation method of above-mentioned material for repairing, alumine aggregate or corundum aggregate, corundum fine powder, spinelle is thin Powder, SiO2Micro mist, α-Al2O3Micro mist, aluminate cement, ρ-aluminium oxide or aluminium Silica hydrogel powder, water-reducing agent and plasticizer are in blender It inside stirs, material for repairing is made.
Since carbon-free non-slag line material for repairing of refining ladle liner of the present invention and preparation method thereof uses above-mentioned technical side Case, i.e. this material for repairing are with the alumine aggregate of 50~75w% or corundum aggregate, the corundum fine powder of 10~30w%, 4~10w% The SiO of spinelle fine powder, 0.5~4w%2α-the Al of micro mist, 1~5w%2O3Micro mist, the aluminate cement of 1~5w%, 1~5w% ρ-aluminium oxide or aluminium Silica hydrogel powder are raw material, the additional water-reducing agent and 0.2~1.0% for accounting for raw material weight percentage and being 0.1~0.2% Plasticizer；This method stirs above-mentioned each ingredient in blender, and material for repairing is made.This material for repairing adhesiveness and The requirement that plasticity is good, adhesion strength meets ladle after drying and high temperature processing, can be not only used for repairing carbon-free purified steel The serious melting loss position in the part of the non-slag line of ladle-lining, it can also be used to large surface mending；This preparation method is simple, easily operated, side Just this material for repairing is made.
Specific embodiment
The carbon-free non-slag line material for repairing of refining ladle liner of the present invention is with the alumine aggregate or corundum bone of 50~75w% The SiO of material, the spinelle fine powder of the corundum fine powder of 10~30w%, 4~10w%, 0.5~4w%2α-the Al of micro mist, 1~5w%2O3 Micro mist, the aluminate cement of 1~5w%, ρ-aluminium oxide of 1~5w% or aluminium Silica hydrogel powder are raw material, additional to account for raw material weight percentage Than for 0.1~0.2% water-reducing agent and 0.2~1.0% plasticizer.
Further, granularity≤8mm of above-mentioned alumine aggregate or corundum aggregate, wherein in alumine aggregate Al2O3Content >=85w%, the Al in corundum aggregate2O3Content >=97w%.
Further, granularity≤0.088mm of above-mentioned corundum fine powder and spinelle fine powder, wherein spinelle fine powder is the trade mark One of No. 70, No. 78 or No. 90 spinelle fine powders, Al2O3Content difference >=68w%, 75w% and 88w%.
Further, above-mentioned SiO2Micro mist and α-Al2O3Granularity≤1 μm of micro mist, wherein SiO2SiO in micro mist2Content >= 94w%。
Further, the Al in above-mentioned aluminate cement, ρ-aluminium oxide and aluminium Silica hydrogel powder2O3Content difference >=70w%, 90w% And 70w%.
Further, above-mentioned water-reducing agent is poly carboxylic acid series water reducer, and above-mentioned plasticizer is lignosulfonates.
A kind of preparation method of above-mentioned material for repairing, alumine aggregate or corundum aggregate, corundum fine powder, spinelle is thin Powder, SiO2Micro mist, α-Al2O3Micro mist, aluminate cement, ρ-aluminium oxide or aluminium Silica hydrogel powder, water-reducing agent and plasticizer are in blender It inside stirs, material for repairing is made.
Embodiment 1
This material for repairing is with the alumine aggregate of 50~60w%, the corundum fine powder of 20~30w%, the trade mark 70 of 4~10w% The SiO of spinelle fine powder, 0.5~4w%2α-the Al of micro mist, 1~5w%2O3Micro mist, 1~5w% aluminate cement be raw material, outside Add and account for raw material weight percentage as 0.1~0.2% poly carboxylic acid series water reducer and 0.2~1.0% lignosulfonates, is stirring It is stirred in machine, material for repairing is made.
This material for repairing Main physical performance are as follows: the adhesion strength after 110 DEG C of drying is 1.0~2.0MPa, 1100 DEG C of medium temperatures Adhesion strength after heat preservation 1~3 hour is 2.0~4.0MPa, 1600 DEG C of adhesion strength > after soak 1~3 hour 8MPa, the adhesion strength after thermal shock (1100 DEG C of water coolings) three times are 0.5~1.5MPa.
Embodiment 2
This material for repairing is with the alumine aggregate of 60~65w%, the corundum fine powder of 15~20w%, the trade mark 78 of 4~10w% The SiO of spinelle fine powder, 0.5~4w%2α-the Al of micro mist, 1~5w%2O3Micro mist, 1~5w% ρ-aluminium oxide be raw material, it is additional Accounting for raw material weight percentage is 0.1~0.2% poly carboxylic acid series water reducer and 0.2~1.0% lignosulfonates, in blender It inside stirs, material for repairing is made.
This material for repairing Main physical performance are as follows: the adhesion strength after 110 DEG C of drying is 1.0~2.0MPa, 1100 DEG C of medium temperatures Adhesion strength after heat preservation 1~3 hour is 2.0~4.0MPa, 1600 DEG C of adhesion strength > after soak 1~3 hour 8MPa, the adhesion strength after thermal shock (1100 DEG C of water coolings) three times are 0.5~1.5MPa.
Embodiment 3
This material for repairing is with the alumine aggregate of 65~75w%, the corundum fine powder of 10~15w%, the trade mark 90 of 4~10w% The SiO of spinelle fine powder, 0.5~4w%2α-the Al of micro mist, 1~5w%2O3Micro mist, 1~5w% aluminium Silica hydrogel powder be raw material, outside Add and account for raw material weight percentage as 0.1~0.2% poly carboxylic acid series water reducer and 0.2~1.0% lignosulfonates, is stirring It is stirred in machine, material for repairing is made.
This material for repairing Main physical performance are as follows: the adhesion strength after 110 DEG C of drying is 1.0~2.0MPa, 1100 DEG C of medium temperatures Adhesion strength after heat preservation 1~3 hour is 2.0~4.0Mpa, 1600 DEG C of adhesion strength > after soak 1~3 hour 8Mpa, the adhesion strength after thermal shock (1100 DEG C of water coolings) three times are 0.5~1.5Mpa.
Embodiment 4
This material for repairing is with the plate diamond spar aggregate of 50~60w%, the corundum fine powder of 20~30w%, the trade mark 70 of 4~10w% The SiO of spinelle fine powder, 0.5~4w%2α-the Al of micro mist, 1~5w%2O3The aluminate cement of micro mist and 1~5w% are raw material, outside Add and account for raw material weight percentage as 0.1~0.2% poly carboxylic acid series water reducer and 0.2~1.0% lignosulfonates, is stirring It is stirred in machine, material for repairing is made.
This material for repairing Main physical performance are as follows: the adhesion strength after 110 DEG C of drying is 1.0~2.0MPa, 1100 DEG C of medium temperatures Adhesion strength after heat preservation 1~3 hour is 1.0~3.0MPa, 1600 DEG C of adhesion strength > after soak 1~3 hour 8MPa, the adhesion strength after thermal shock (1100 DEG C of water coolings) three times are 0.5~1.5MPa.
Embodiment 5
This material for repairing is with the plate diamond spar aggregate of 60~65w%, the corundum fine powder of 15~20w%, the trade mark 78 of 4~10w% The SiO of spinelle fine powder, 0.5~4w%2α-the Al of micro mist, 1~5w%2O3ρ-aluminium oxide of micro mist and 1~5w% are raw material, additional Accounting for raw material weight percentage is 0.1~0.2% poly carboxylic acid series water reducer and 0.2~1.0% lignosulfonates, in blender It inside stirs, material for repairing is made.
This material for repairing Main physical performance are as follows: the adhesion strength after 110 DEG C of drying is 1.0~2.0MPa, 1100 DEG C of medium temperatures Adhesion strength after heat preservation 1~3 hour is 1.0~3.0MPa, 1600 DEG C of adhesion strength > after soak 1~3 hour 8MPa, the adhesion strength after thermal shock (1100 DEG C of water coolings) three times are 0.5~1.5MPa.
Embodiment 6
This material for repairing is with the plate diamond spar aggregate of 65~75w%, the corundum fine powder of 10~15w%, the trade mark 90 of 4~10w% The SiO of spinelle fine powder, 0.5~4w%2α-the Al of micro mist, 1~5w%2O3The aluminium Silica hydrogel powder of micro mist and 1~5w% are raw material, outside Add and account for raw material weight percentage as 0.1~0.2% poly carboxylic acid series water reducer and 0.2~1.0% lignosulfonates, is stirring It is stirred in machine, material for repairing is made.
This material for repairing Main physical performance are as follows: the adhesion strength after 110 DEG C of drying is 1.0~2.0MPa, 1100 DEG C of medium temperatures Adhesion strength after heat preservation 1~3 hour is 1.0~3.0MPa, 1600 DEG C of adhesion strength > after soak 1~3 hour 8MPa, the adhesion strength after thermal shock (1100 DEG C of water coolings) three times are 0.5~1.5MPa.
Embodiment 7
This material for repairing with the white fused alumina aggregate of 50~60w%, the corundum fine powder of 20~30w%, 4~10w% No. 70 points of the trade mark The SiO of spar fine powder, 0.5~4w%2α-the Al of micro mist, 1~5w%2O3The aluminate cement of micro mist and 1~5w% are raw material, additional Accounting for raw material weight percentage is 0.1~0.2% poly carboxylic acid series water reducer and 0.2~1.0% lignosulfonates, in blender It inside stirs, material for repairing is made.
This material for repairing Main physical performance are as follows: the adhesion strength after 110 DEG C of drying is 1.0~2.0MPa, 1100 DEG C of medium temperatures Adhesion strength after heat preservation 1~3 hour is 1.0~3.0MPa, 1600 DEG C of adhesion strength > after soak 1~3 hour 8MPa, the adhesion strength after thermal shock (1100 DEG C of water coolings) three times are 0.5~1.5MPa.
Embodiment 8
This material for repairing with the white fused alumina aggregate of 60~65w%, the corundum fine powder of 15~20w%, 4~10w% No. 78 points of the trade mark The SiO of spar fine powder, 0.5~4w%2α-the Al of micro mist, 1~5w%2O3ρ-aluminium oxide of micro mist and 1~5w% are raw material, additional to account for Raw material weight percentage is 0.1~0.2% poly carboxylic acid series water reducer and 0.2~1.0% lignosulfonates, in blender It stirs, material for repairing is made.
This material for repairing Main physical performance are as follows: the adhesion strength after 110 DEG C of drying is 1.0~2.0MPa, 1100 DEG C of medium temperatures Adhesion strength after heat preservation 1~3 hour is 1.0~3.0MPa, 1600 DEG C of adhesion strength > after soak 1~3 hour 8MPa, the adhesion strength after thermal shock (1100 DEG C of water coolings) three times are 0.5~1.5MPa.
Embodiment 9
This material for repairing with the white fused alumina aggregate of 65~75w%, the corundum fine powder of 10~15w%, 4~10w% No. 90 points of the trade mark The SiO of spar fine powder, 0.5~4w%2α-the Al of micro mist, 1~5w%2O3The aluminium Silica hydrogel powder of micro mist and 1~5w% are raw material, additional Accounting for raw material weight percentage is 0.1~0.2% poly carboxylic acid series water reducer and 0.2~1.0% lignosulfonates, in blender It inside stirs, material for repairing is made.
This material for repairing Main physical performance are as follows: the adhesion strength after 110 DEG C of drying is 1.0~2.0MPa, 1100 DEG C of medium temperatures Adhesion strength after heat preservation 1~3 hour is 1.0~3.0MPa, 1600 DEG C of adhesion strength > after soak 1~3 hour 8MPa, the adhesion strength after thermal shock (1100 DEG C of water coolings) three times are 0.5~1.5MPa.
Since the material of current ladle liner is mainly magnalium matter or aluminate matter castable, thus in order to in ladle The main material of lining has preferable compatibility, this material for repairing uses alumine or corundum for primary raw material, to obtain excellent Good adhesion property and the higher adhesion strength after treatment of different temperature.The Main physical performance of this material for repairing are as follows: 110 DEG C Adhesion strength after drying is 1.0~2.0MPa, 1100 DEG C of medium temperatures keep the temperature 1~3 hour after adhesion strength be 1.0~ 4.0MPa, 1600 DEG C of adhesion strength > 8MPa after soak 1~3 hour, the bonding after thermal shock (1100 DEG C of water coolings) three times Intensity is 0.5~1.5MPa.Therefore this material for repairing has excellent adhesion property, and the adhesion strength after treatment of different temperature is full Sufficient ladle requirement, when construction, add suitable quantity of water to stir evenly, and are adjusted to that construction is suitble to be advisable, can be used for repairing carbon-free refining ladle The serious melting loss position in the part of the non-slag line of liner, it can also be used to the large surface mending of ladle liner, suitable for different construction parties Formula reduces the consumption of the resistance to material of ton steel to extend the service life of ladle liner, has significant economic benefit and society's effect Benefit.

Claims (7)

1. a kind of non-slag line material for repairing of carbon-free refining ladle liner, it is characterised in that: this material for repairing is with the high alumina of 50~75w% Alumina aggregate or corundum aggregate, the corundum fine powder of 10~30w%, the spinelle fine powder of 4~10w%, 0.5~4w% SiO2It is micro- α-the Al of powder, 1~5w%2O3Micro mist, the aluminate cement of 1~5w%, ρ-aluminium oxide of 1~5w% or aluminium Silica hydrogel powder are raw material, The additional raw material weight percentage that accounts for is 0.1~0.2% water-reducing agent and 0.2~1.0% plasticizer.
2. the non-slag line material for repairing of carbon-free refining ladle liner according to claim 1, it is characterised in that: the high alumina alum Granularity≤8mm of native aggregate or corundum aggregate, wherein the Al in alumine aggregate2O3Content >=85w%, in corundum aggregate Al2O3Content >=97w%.
3. the non-slag line material for repairing of carbon-free refining ladle liner according to claim 1 or 2, it is characterised in that: described rigid Granularity≤0.088mm of beautiful fine powder and spinelle fine powder, wherein spinelle fine powder is No. 70, No. 78 or No. 90 spinelles of the trade mark One of fine powder, Al2O3Content difference >=68w%, 75w% and 88w%.
4. the non-slag line material for repairing of carbon-free refining ladle liner according to claim 3, it is characterised in that: the SiO2It is micro- Powder and α-Al2O3Granularity≤1 μm of micro mist, wherein SiO2SiO in micro mist2Content >=94w%.
5. the non-slag line material for repairing of carbon-free refining ladle liner according to claim 3, it is characterised in that: the aluminate Al in cement, ρ-aluminium oxide and aluminium Silica hydrogel powder2O3Content difference >=70w%, 90w% and 70w%.
6. the non-slag line material for repairing of carbon-free refining ladle liner according to claim 3, it is characterised in that: the water-reducing agent For poly carboxylic acid series water reducer, the plasticizer is lignosulfonates.
7. a kind of preparation method of material for repairing described in any one of claims 1 to 6, it is characterised in that: by alumine aggregate Or corundum aggregate, corundum fine powder, spinelle fine powder, SiO2Micro mist, α-Al2O3Micro mist, aluminate cement, ρ-aluminium oxide or aluminium silicon Gel powder, water-reducing agent and plasticizer stir in blender, and material for repairing is made.
CN201310694200.7A 2013-12-18 2013-12-18 Carbon-free non-slag line material for repairing of refining ladle liner and preparation method thereof Active CN104725053B (en)

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CN107500786B (en) * 2017-08-18 2020-02-21 上海利尔耐火材料有限公司 Gunning mix for carbon-free steel ladle and preparation method and application thereof
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