CN104529485B - Two-layer compound refractory material and two-layer compound refractory material ditch cover and its manufacture method and application - Google Patents

Two-layer compound refractory material and two-layer compound refractory material ditch cover and its manufacture method and application Download PDF

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CN104529485B
CN104529485B CN201410748526.8A CN201410748526A CN104529485B CN 104529485 B CN104529485 B CN 104529485B CN 201410748526 A CN201410748526 A CN 201410748526A CN 104529485 B CN104529485 B CN 104529485B
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filler
water
refractory material
layer compound
cement
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CN104529485A (en
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雷家珩
熊鑫
郭丽萍
杜小弟
汪海林
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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Abstract

The invention provides a kind of two-layer compound refractory material and two-layer compound refractory material ditch cover and its manufacture method and application. This ditch cover comprises steel structure casing, be filled in the main body refractory masses in described steel structure casing and be arranged at the anti-molten iron erosional layer of side external surface in steel structure casing; The slurry that main body refractory masses forms after being mixed by the first filler, steel fibre, cement, water reducer and water is poured into a mould and is formed, the first filler by haydite, float pearl and perlite forms; Anti-molten iron erosional layer is by the second filler, Al (OH)3After micro mist, SPA and water mix, solidify and form, the second filler is by alumina silicate fibre, α-Al2O3Micro mist and graphite microparticles composition. The feature of the prepared two-layer compound refractory material ditch cover of the present invention is to build moulding, can effectively prevent the damage to workman of molten iron and flue dust, reduce the pollution of waste gas to environment, lightweight, intensity is large, the life-span is long, high temperature resistant, good thermal shock, indeformable, do not ftracture, do not come off, high insulating effect, move that to hang shake not damaged.

Description

Two-layer compound refractory material and two-layer compound refractory material ditch cover and its manufacture method and application
Technical field
The invention belongs to field of metallurgy, relate in particular to a kind of two-layer compound refractory material and two-layer compound refractory material ditch cover and its systemMaking method and application, this ditch cover is applicable to ironmaking, steel-making blast furnace trough ditch cover or uses as slag runner cover plate and dust collection cover, withAnd be applicable to the high temperature fluent metal blowing ditch ditch cover in other pyrometallurgy (as plumbous in copper metallurgy, refining etc.) field or as dust collection cover andSlag runner cover plate uses.
Background technology
Iron Works taps a blast furnace and can produce a large amount of smog, and tapping hole, iron runner etc. locates to need ditch cover and cover plate to prevent dust. State at presentInside and outside blast furnace trough ditch cover or cover plate generally adopt steel structure frame, interior block refractory brick or the larger castable refractory of proportion(≥2.6t/m3) make. Trough will often be cleared up, and ditch cover or cover plate be yielding in frequent lifting process, it is strong to be vulnerable toCollide. Interior block refractory brick overall structure is bad, easily comes off, easily falls brick while collision; High density pouring fireproof material is from great,Intensity and rigidity are also large, and the thermal coefficient of expansion of refractory brick and pouring fireproof material do not mate with steel structure frame, use procedureIn easy to crack, easily come off, thereby greatly shortened service life of ditch cover. The use longevity of current domestic iron-smelter ditch cover and cover plateOrder about general half a year, had a strong impact on work, environment and the safety of iron-smelter, the frequent replacing of ditch cover and cover plate also increases refiningIron cost. In order to address the above problem, patent CN202164312U has proposed a kind of employing refractory fibre and has directly done ditch cover linerMethod, but itself and steel structure frame is fixedly a difficult point.
Summary of the invention
The object of the present invention is to provide a kind of light weight high-strength, long-life two-layer compound refractory material that the anti-molten iron that splashes washes away andTwo-layer compound refractory material ditch cover and its manufacture method and application. This ditch covers under existing blast furnace environment and can normally use more than 1 year.
The present invention for solving the problems of the technologies described above adopted scheme is:
A kind of two-layer compound refractory material, it comprises that main body refractory material and anti-molten iron wash away material; Described main body refractory material bagDraw together the first filler, steel fibre, cement, water reducer and water, described the first filler by haydite, float pearl and perlite forms; DescribedAnti-molten iron washes away material and comprises the second filler, Al (OH)3Micro mist and SPA, described the second filler is by alumina silicate fibre, α-Al2O3Micro mist and graphite microparticles composition.
In such scheme, the mass ratio of described the first filler, steel fibre, cement, water reducer and water is 1~3:0.01~0.05:1~3:0.01~0.05:0.35~1, haydite in described the first filler, floats pearl and perlitic mass ratio is 0.5~1.5:0.5~1.4:0~0.1.
In such scheme, described the second filler, Al (OH)3The mass ratio of micro mist, SPA and water is 10~40:5~10:5~30:1~20, alumina silicate fibre, α-Al in described the second filler2O3The mass ratio of micro mist and graphite microparticles is 0~1:10~40:0~1.
A kind of two-layer compound refractory material ditch cover, described ditch cover comprises steel structure casing, is filled in the master in described steel structure casingBody refractory masses and be arranged at the anti-molten iron erosional layer of side external surface in described steel structure casing; Described main body refractory massesThe slurry forming after being mixed by the first filler, steel fibre, cement, water reducer and water is poured into a mould and is formed, described the first filler by haydite,Float pearl and perlite composition; Described anti-molten iron erosional layer is by the second filler, Al (OH)3After micro mist, SPA and water mix, solidify andBecome, described the second filler is by alumina silicate fibre, α-Al2O3Micro mist and graphite microparticles composition.
In such scheme, the thickness of described main body refractory masses is 10-15cm, the thickness of described anti-molten iron erosional layer is 2~5mm。
In such scheme, inner surface is also connected with multiple umbrella reinforcements outside described steel structure casing.
The manufacture method of described two-layer compound refractory material ditch cover, is characterized in that, it comprises the steps:
1) provide a steel structure casing;
2) slurry forming after being mixed by the first filler, steel fibre, cement, water reducer and water is poured in steel structure casing,Thereby the moulding of vibrating forms main body refractory masses;
3) after initial set, in described steel structure casing, side external surface applies anti-molten iron erosional layer, 160 DEG C of bakings after standing maintenance 7d24~48h obtains described two-layer compound refractory material ditch cover.
In such scheme, described haydite refers to the hollow haydite being fired into shale, flyash or mud.
In such scheme, described cement is aluminous refractory cement, low calcium-aluminate refractory cement, calcium Mg aluminate cement and whiteOne or more composite uses in marble refractory cement.
The application of described two-layer compound refractory material in the dust-proof insulating member of making in pyrometallurgy blast furnace. Described dustproof guarantorTemperature member is as ironmaking, steel-making blast furnace trough ditch cover or slag runner cover plate and dust collection cover, and other pyrometallurgy is (as copper metallurgy, refiningPlumbous etc.) high temperature fluent metal blowing ditch ditch cover or dust collection cover and the slag runner cover plate in field.
The invention has the beneficial effects as follows: the feature of the prepared two-layer compound refractory material ditch cover of the present invention is for building moulding, can havingEffect prevents pollution to environment of the damage to workman of molten iron and flue dust, reduction waste gas, lightweight, and intensity is large, the life-span is long, resistance to heightTemperature, good thermal shock, indeformable, do not ftracture, do not come off, high insulating effect, move that to hang shake not damaged.
Brief description of the drawings
The profile of the two-layer compound refractory material ditch cover that Fig. 1 provides for the embodiment of the present invention 1.
The profile of the two-layer compound refractory material ditch cover that Fig. 2 provides for the embodiment of the present invention 2.
Detailed description of the invention
Below in conjunction with drawings and Examples, further the present invention will be described, but content of the present invention is not only confined to belowEmbodiment.
Embodiment 1
As shown in Figure 1, its a kind of blast furnace trough two-layer compound refractory material ditch cover providing for the embodiment of the present invention. ShouldDitch cover comprises steel structure casing 1, is filled in the main body refractory masses 3 in steel structure casing 1 and is arranged at steel structure casing 1The anti-molten iron erosional layer 4 of interior side external surface. Steel structure casing 1 outside inner surface is also connected with multiple umbrella reinforcements 2. This main bodyThe thickness of refractory masses 3 is 10-15cm, and the thickness of anti-molten iron erosional layer 4 is 2~5mm. This ditch cover cross section is trapezoidal, sampleThe long 5.5m* of product size (bottom width 2m, top width 1.5m) the high 1.3m of *.
In the present embodiment, the composition of main body refractory masses 3 is (weight portion meter): 1 part of haydite, float 0.67 part, pearl, perlite 0.05Part, 1.2 parts of aluminous cements (CA-50), 0.02 part of steel fibre, 0.38 part, water, 0.01 part of water reducer. By light-weight refractory pouringMaterial is poured in concrete mixer, adds water and stirs, until castable is just analysed slurry.
In the present embodiment, the composition of anti-molten iron erosional layer 4 is (weight portion meter): 20 parts of SPAs, 8~8.5 parts, water, Al (OH)35 parts of micro mists, 0.35 part of alumina silicate fibre, α-Al2O322 parts of micro mists, 0.5 part of graphite microparticles.
The manufacture method of this two-layer compound refractory material ditch cover is: make the trapezoidal iron shell shell mould with grid skeleton, in shell mouldSide welding umbrella screw-thread steel reinforcement; On shell mould, directly pour into a mould light-weight body refractory masses, thickness 10~15cm, with vibrationPlatform is tamped to surface uniform pulp; After initial set, (approximately one day) applies wear-resisting anti-molten iron erosional layer (2~5mm) thereon. Leave standstill and supportProtect 160 DEG C of baking 24~48h after 7d, be that Liftable uses after superficial layer solidifies.
The lightweight (≤1.0t/m of this ditch cover3), intensity >=24MPa, long (>=1.5 years), high temperature resistant (1300 DEG C) of life-span, anti-Thermal shock resistance is good, indeformable, do not ftracture (thermal coefficient of expansion≤0.011mm/ (m DEG C)), do not come off, high insulating effect (heat conduction systemNumber≤0.23W/m DEG C, the ditch cover back side≤50 DEG C), move that to hang shake not damaged.
Embodiment 2
As shown in Figure 2, its a kind of blast furnace trough two-layer compound refractory material ditch cover providing for the embodiment of the present invention. ShouldThe cross section of two-layer compound refractory material ditch cover is arc, the long 5.5m* of size (bottom width 2m, arc top radius 1m) the high 1.3m of *.
In the present embodiment, the composition of main body refractory masses 3 is (weight portion meter): 1.5 parts of haydites, float 1 part, pearl, perlite 0.1Part, 1.5 parts of aluminous cements (CA-50), 0.05 part of steel fibre, 0.55 part, water, 0.012 part of water reducer. Light-weight refractory is wateredMaterial feeding is poured in concrete mixer, adds water and stirs, until castable is just analysed slurry.
In the present embodiment, the composition of anti-molten iron erosional layer 4 is (weight portion meter): 20 parts of SPAs, 8~8.5 parts, water, Al (OH)35 parts of micro mists, 0.35 part of alumina silicate fibre, α-Al2O322 parts of micro mists, 0.5 part of graphite microparticles.
The manufacture method of this two-layer compound refractory material ditch cover is: make the arc iron shell shell mould with grid skeleton, in shell mouldSide welding umbrella screw-thread steel reinforcement; On shell mould, directly pour into a mould light-weight body refractory masses, thickness 10~15cm, with vibrationPlatform is tamped to surface uniform pulp; After initial set, (approximately one day) applies wear-resisting anti-molten iron erosional layer (2~5mm) thereon. Leave standstill and supportProtect 160 DEG C of baking 24~48h after 7d, be that Liftable uses after superficial layer solidifies.
The lightweight (≤1.0t/m of this ditch cover3), intensity >=25MPa, long (>=1.5 years), high temperature resistant (1300 DEG C) of life-span, anti-Thermal shock resistance is good, indeformable, do not ftracture (thermal coefficient of expansion≤0.012mm/ (m DEG C)), do not come off, high insulating effect (heat conduction systemNumber≤0.24W/m DEG C, the ditch cover back side≤50 DEG C), move that to hang shake not damaged.
Embodiment 3
The embodiment of the present invention provides a kind of blast furnace trough two-layer compound refractory material ditch cover, and the cross section of described ditch cover is rectangularShape, the high 0.15m of the long 5.5m* bottom width of size 2m*.
In the present embodiment, high-strength light body layer composition is (weight portion meter): 1 part of haydite, float 0.67 part, pearl, 0.05 part of perlite,1.2 parts of aluminous cements (CA-50), 0.02 part of steel fibre, 0.38 part, water, 0.01 part of water reducer. Light weight castable refractory is fallenEnter in concrete mixer, add water and stir, until castable is just analysed slurry.
In the present embodiment, wear-resisting antiscour superficial layer composition is (weight portion meter): 20 parts of phosphoric acid, 8~8.5 parts, water, Al (OH)35 parts of micro mists, 0.35 part of alumina silicate fibre, α-Al2O322 parts of micro mists, 0.5 part of graphite microparticles.
The manufacture method of this two-layer compound refractory material ditch cover is: make the iron shell shell mould with grid skeleton, in the weldering of shell mould inner sideConnect umbrella screw-thread steel reinforcement; Direct cast light-weight body refractory masses on shell mould, thickness 12~15cm, rams with shake tableReal in surface uniform pulp; After initial set, (approximately one day) applies wear-resisting anti-molten iron erosional layer (2~3mm) thereon. Leave standstill maintenance160 DEG C of baking 24~48h after 7d are that Liftable uses after superficial layer solidifies.
The lightweight (≤1.0t/m of this ditch cover3), intensity >=24MPa, long (>=1.5 years), high temperature resistant (1300 DEG C) of life-span, anti-Thermal shock resistance is good, indeformable, do not ftracture (thermal coefficient of expansion≤0.011mm/ (m DEG C)), do not come off, high insulating effect (heat conduction systemNumber≤0.23W/m DEG C, the ditch cover back side≤50 DEG C), move that to hang shake not damaged.

Claims (8)

1. a two-layer compound refractory material, is characterized in that, it comprises main body refractory masses and the anti-molten iron that is arranged on described main body refractory masses washes away material layer; Main body refractory material comprises the first filler, steel fibre, cement, water reducer and water, described the first filler by haydite, float pearl and perlite forms, the mass ratio of described the first filler, steel fibre, cement, water reducer and water is 1 ~ 3:0.01 ~ 0.05:1 ~ 3:0.01 ~ 0.05:0.35 ~ 1, haydite in described the first filler, floats pearl and perlitic mass ratio is 0.5 ~ 1.5:0.5 ~ 1.4:0 ~ 0.1; Anti-molten iron washes away material and comprises the second filler, Al (OH)3Micro mist, SPA and water, described the second filler is by alumina silicate fibre, α-Al2O3Micro mist and graphite microparticles composition, described the second filler, Al (OH)3The mass ratio of micro mist, SPA and water is 10 ~ 40:5 ~ 10:5 ~ 30:1 ~ 20, alumina silicate fibre, α-Al in described the second filler2O3The mass ratio of micro mist and graphite microparticles is 0 ~ 1:10 ~ 40:0 ~ 1.
2. a two-layer compound refractory material ditch cover, is characterized in that, described ditch cover comprises steel structure casing, is filled in the main body refractory masses on described steel structure casing surface and is arranged at the anti-molten iron erosional layer on described main body refractory masses; The slurry cast that described main body refractory masses forms after being mixed by the first filler, steel fibre, cement, water reducer and water forms, described the first filler by haydite, float pearl and perlite forms, the mass ratio of described the first filler, steel fibre, cement, water reducer and water is 1 ~ 3:0.01 ~ 0.05:1 ~ 3:0.01 ~ 0.05:0.35 ~ 1, haydite in described the first filler, floats pearl and perlitic mass ratio is 0.5 ~ 1.5:0.5 ~ 1.4:0 ~ 0.1; Described anti-molten iron erosional layer is by the second filler, Al (OH)3After micro mist, SPA and water mix, solidify and form, described the second filler is by alumina silicate fibre, α-Al2O3Micro mist and graphite microparticles composition, described the second filler, Al (OH)3The mass ratio of micro mist, SPA and water is 10 ~ 40:5 ~ 10:5 ~ 30:1 ~ 20, alumina silicate fibre, α-Al in described the second filler2O3The mass ratio of micro mist and graphite microparticles is 0 ~ 1:10 ~ 40:0 ~ 1.
3. two-layer compound refractory material ditch cover as claimed in claim 2, is characterized in that, the thickness of described main body refractory masses is 10-15cm, and the thickness of described anti-molten iron erosional layer is 2~5mm.
4. two-layer compound refractory material ditch cover as claimed in claim 2, is characterized in that, described steel structure casing surface is also connected with multiple umbrella reinforcements.
5. the manufacture method of two-layer compound refractory material ditch cover as claimed in claim 2, is characterized in that, it comprises the steps:
1) provide a steel structure casing;
2) slurry forming after being mixed by the first filler, steel fibre, cement, water reducer and water is poured into steel structure casing surface, thereby the moulding of vibrating forms main body refractory masses;
3) after initial set, on main body refractory masses, apply anti-molten iron erosional layer, after standing maintenance 7d, 160 DEG C of baking 24 ~ 48h obtain described two-layer compound refractory material ditch cover.
6. manufacture method as claimed in claim 5, is characterized in that, described haydite refers to the hollow haydite being fired into shale, flyash or mud.
7. manufacture method as claimed in claim 5, is characterized in that, described cement is one or more the composite uses in aluminous refractory cement, low calcium-aluminate refractory cement, calcium Mg aluminate cement and dolomite refractory cement.
8. the application of two-layer compound refractory material as claimed in claim 1 in the dust-proof insulating member of making in pyrometallurgy blast furnace.
CN201410748526.8A 2014-12-08 2014-12-08 Two-layer compound refractory material and two-layer compound refractory material ditch cover and its manufacture method and application Active CN104529485B (en)

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CN107099635B (en) * 2017-06-20 2023-01-24 重庆科技学院 Iron runner groove splashproof dust collector
CN112608129A (en) * 2020-12-09 2021-04-06 钢城集团凉山瑞海实业有限公司 Refractory material and preparation method thereof, high-temperature-resistant and burning-loss-preventing device for sleeper and preparation method thereof
CN114956839B (en) * 2022-04-18 2023-05-23 南京联合荣大工程材料有限责任公司 Baffle plate for skimming tool and preparation method thereof
CN114685174B (en) * 2022-04-27 2023-07-14 长兴明天炉料有限公司 High-strength light iron runner and preparation method thereof

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CN100578127C (en) * 2007-09-11 2010-01-06 李朝侠 Fluidized calcining furnace ball arc furnace top and method of forming same
CN202164312U (en) * 2011-07-01 2012-03-14 河北省首钢迁安钢铁有限责任公司 Lining structure for blast furnace slag iron runner cover plate
CN103539468B (en) * 2013-10-25 2015-04-08 宁夏天纵泓光余热发电技术有限公司 High-alumina high-temperature refractory castable for power station boiler
CN103553687B (en) * 2013-11-09 2015-04-08 宁夏天纵泓光余热发电技术有限公司 Heat-insulating fireproof pouring material

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