CN107522498A - Preparation method for the ceramic wool insulation material of industrial smelting furnace - Google Patents

Preparation method for the ceramic wool insulation material of industrial smelting furnace Download PDF

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Publication number
CN107522498A
CN107522498A CN201710841569.4A CN201710841569A CN107522498A CN 107522498 A CN107522498 A CN 107522498A CN 201710841569 A CN201710841569 A CN 201710841569A CN 107522498 A CN107522498 A CN 107522498A
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batch mixing
powder
obtains
alumina
slurries
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邱泽坚
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Foshan Gaojie Industrial Furnace Co Ltd
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Foshan Gaojie Industrial Furnace Co Ltd
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Abstract

The invention discloses the preparation method of the ceramic wool insulation material for industrial smelting furnace, method is using alumina-silicate ceramic fibre and silicon nitrogen carbon ceramic fibers as matrix material, it is charged with alundum (Al2O3) and zirconium oxide carries out physical property improvement, add binding agent simultaneously, surfactant and filler, it is molded insulation material, so that this insulation material thermal conductivity factor is low, apply on industrial smelting furnace, thermal conductivity factor can reach 0.015 level, high insulating effect, heat 80% can also be kept not lose, and insulation material preparation method is simple, process is few, save cost.

Description

Preparation method for the ceramic wool insulation material of industrial smelting furnace
Technical field
The present invention relates to insulation material technical matters technical field, the more particularly, to ceramic wool insulation of industrial smelting furnace The preparation method of material.
Background technology
High-temperature resistant coating technology substantially has the high temperature resistant of two big series, organic series and inorganic series, wherein organic series Mostly using organosilicon as carrier, its maximum temperature no more than 400 degrees Celsius, will typically be carbonized coating more than this temperature Or softening, and inorganic serial high-temperature resistant coating is all that can bear at least 1000 degrees Celsius of high temperature.
Industrial smelting furnace is generally used for being melted metal object, such as：Metallic aluminium.But in the process of molten metal aluminium In, it is necessary to substantial amounts of heat, and when temperature reaches molten metal temperature, temperature will be very high.In order that in metal melting Heat, which is reduced, to be scattered and disappeared, and typically to reduce the loss of heat in the outer layer covers one layer of heat preservation layer of crucible.Because melting temperature is special It is not high, so organic material cannot be applied, inorganic heat insulation material can only be used.
Inorganic heat insulation material prepared by existing preparation method when applying in industrial smelting furnace, although material be unlikely to carbonization or Person softens, but its heat insulation effect is bad, and its thermal conductivity factor can reach 0.035W/m.K, and can only ensure that 70% heat does not damage Lose.
The content of the invention
In view of this, the invention provides the preparation method of the ceramic wool insulation material for industrial smelting furnace.
For the preparation method of the ceramic wool insulation material of industrial smelting furnace, method includes：
Alumina-silicate ceramic fibre and silicon nitrogen carbon ceramic fibers are separately added into airslide disintegrating mill and crushed, is crushed to Particle diameter is 14-20 μm；
Alumina-silicate ceramic fibre powder and silicon nitrogen carbon ceramic fibers powder are crossed into 600-800 mesh respectively；
Alumina-silicate ceramic fibre powder after sieving and silicon nitrogen carbon ceramic fibers powder are added into water, use mixer It is stirred, mixing speed 40-70r/min, stirs 18-24min, obtain batch mixing slurries a；
Alundum (Al2O3) and zirconium oxide are added into batch mixing slurries a, mixing speed 140-180r/min, during stirring Between be 3-6min, obtain batch mixing slurries b；
Then binding agent, surfactant and filler are added into batch mixing slurries b, disperseed in dispersant, point Powder rotating speed is 80-120r/min, jitter time 5-8min, obtains batch mixing slurries c；
Batch mixing slurries c is poured into metal die with holes, using vacuum filtration, moisture is extracted out, then carries out machinery pressure Wet base is made；
It is put into Muffle furnace, gradually heating, constantly pyrolysis, programming rate is 30-40 DEG C/min, rises to 800-1000 DEG C, it is incubated 2-3h；
After soaking time, then natural cooling, is cooled to room temperature, obtains insulation material.
Preferably, method includes：
Alumina-silicate ceramic fibre and silicon nitrogen carbon ceramic fibers are separately added into airslide disintegrating mill and crushed, is crushed to Particle diameter is 15-18 μm；
Alumina-silicate ceramic fibre powder and silicon nitrogen carbon ceramic fibers powder are crossed into 650-750 mesh respectively；
Alumina-silicate ceramic fibre powder after sieving and silicon nitrogen carbon ceramic fibers powder are added into water, use mixer It is stirred, mixing speed 50-65/min, stirs 20-22min, obtain batch mixing slurries a；
Alundum (Al2O3) and zirconium oxide are added into batch mixing slurries a, mixing speed 150-165r/min, during stirring Between be 4-5min, obtain batch mixing slurries b；
Then binding agent, surfactant and filler are added into batch mixing slurries b, disperseed in dispersant, point Powder rotating speed is 90-110r/min, jitter time 6-7min, obtains batch mixing slurries c；
Batch mixing slurries c is poured into metal die with holes, using vacuum filtration, moisture is extracted out, then carries out machinery pressure Wet base is made；
It is put into Muffle furnace, gradually heating, constantly pyrolysis, programming rate is 32-36 DEG C/min, rises to 850-940 DEG C, It is incubated 2.5-3h；
After soaking time, then natural cooling, is cooled to room temperature, obtains insulation material.
Preferably, method includes：
Alumina-silicate ceramic fibre and silicon nitrogen carbon ceramic fibers are separately added into airslide disintegrating mill and crushed, is crushed to Particle diameter is 17 μm；
Alumina-silicate ceramic fibre powder and silicon nitrogen carbon ceramic fibers powder are crossed into 680 mesh respectively；
Alumina-silicate ceramic fibre powder after sieving and silicon nitrogen carbon ceramic fibers powder are added into water, use mixer It is stirred, mixing speed 58/min, stirs 21min, obtain batch mixing slurries a；
Alundum (Al2O3) and zirconium oxide are added into batch mixing slurries a, mixing speed 156r/min, mixing time is 4min, obtain batch mixing slurries b；
Then binding agent, surfactant and filler are added into batch mixing slurries b, disperseed in dispersant, point Powder rotating speed is 104r/min, jitter time 6min, obtains batch mixing slurries c；
Batch mixing slurries c is poured into metal die with holes, using vacuum filtration, moisture is extracted out, then carries out machinery pressure Wet base is made；
It is put into Muffle furnace, gradually heating, constantly pyrolysis, programming rate is 35 DEG C/min, rises to 880 DEG C, insulation 2.8h；
After soaking time, then natural cooling, is cooled to room temperature, obtains insulation material.
Preferably, in addition to accurately the alumina-silicate ceramic fibre, silicon nitrogen carbon ceramic fibers, three oxidations two of formula ratio are weighed Aluminium, zirconium oxide, binding agent, surfactant and filler.
Preferably, in addition to by wet base room temperature 20-24h, it is then placed in into baking oven and dries, oven temperature 80- 100 DEG C, drying time 5-8h, obtain dry body.
Preferably, by wet base room temperature 21-23h, it is then placed in into baking oven and dries, oven temperature is 85-95 DEG C, is dried The dry time is 6-7h, obtains dry body.
Preferably, the binding agent is one kind in silicic acid gel, cement or Alumina gel.
Preferably, the surfactant is titanate esters or Aluminate.
Preferably, the filler is one in talcum powder, graphite powder, glass dust, flake asbestos, mica powder and silica flour Kind.
The beneficial effects of the present invention are：Insulation material prepared by this preparation method by with alumina-silicate ceramic fibre and Silicon nitrogen carbon ceramic fibers are matrix material, are charged with alundum (Al2O3) and zirconium oxide carries out physical property improvement, add simultaneously Binding agent, surfactant and filler, are molded insulation material so that this insulation material thermal conductivity factor is low, can reach 0.015 level, high insulating effect, heat 80% can be kept not lose, and preparation method is simple, process is few, saves into This.
Embodiment：
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, Obviously, described embodiment is part of the embodiment of the present invention, rather than whole embodiments.Based on the implementation in the present invention Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, is belonged to The scope of protection of the invention.
It should be appreciated that ought be in this specification and in the appended claims in use, term " comprising " and "comprising" instruction Described feature, entirety, step, operation, the presence of element and/or component, but it is not precluded from one or more of the other feature, whole Body, step, operation, element, component and/or its presence or addition for gathering.
It will be further appreciated that the term "and/or" used in description of the invention and appended claims is Refer to any combinations of one or more of the associated item listed and be possible to combine, and including these combinations.
Embodiment 1
For the ceramic wool insulation material of industrial smelting furnace, insulation material by mass component by being formed as follows：
Preparation method for the ceramic wool insulation material of industrial smelting furnace：
Accurate alumina-silicate ceramic fibre, silicon nitrogen carbon ceramic fibers, alundum (Al2O3), zirconium oxide, the silicic acid for weighing formula ratio Gel, Aluminate and talcum powder；
Alumina-silicate ceramic fibre and silicon nitrogen carbon ceramic fibers are separately added into airslide disintegrating mill and crushed, is crushed to Particle diameter is 20 μm；
Alumina-silicate ceramic fibre powder and silicon nitrogen carbon ceramic fibers powder are crossed into 600 mesh respectively；
Alumina-silicate ceramic fibre powder after sieving and silicon nitrogen carbon ceramic fibers powder are added into water, use mixer It is stirred, mixing speed 70r/min, stirs 18min, obtain batch mixing slurries a；
Alundum (Al2O3) and zirconium oxide are added into batch mixing slurries a, mixing speed 180r/min, mixing time is 3min, obtain batch mixing slurries b；
Then silicic acid gel, Aluminate and talcum powder are added into batch mixing slurries b, disperseed in dispersant, disperseed Agent rotating speed is 80r/min, jitter time 8min, obtains batch mixing slurries c；
Batch mixing slurries c is poured into metal die with holes, using vacuum filtration, moisture is extracted out, then carries out machinery pressure Wet base is made；
Room temperature 24h, it is then placed in into baking oven and dries, oven temperature is 80 DEG C, drying time 8h, is done Base；
Dry body being put into Muffle furnace, gradually heating, constantly pyrolysis, programming rate is 30 DEG C/min, rises to 1000 DEG C, It is incubated 2h；
After soaking time, then natural cooling, is cooled to room temperature, obtains insulation material.
Embodiment 2
For the ceramic wool insulation material of industrial smelting furnace, insulation material by mass component by being formed as follows：
Preparation method for the ceramic wool insulation material of industrial smelting furnace：
The accurate alumina-silicate ceramic fibre for weighing formula ratio, silicon nitrogen carbon ceramic fibers, alundum (Al2O3), zirconium oxide, cement, Aluminate and graphite powder；
Alumina-silicate ceramic fibre and silicon nitrogen carbon ceramic fibers are separately added into airslide disintegrating mill and crushed, is crushed to Particle diameter is 18 μm；
Alumina-silicate ceramic fibre powder and silicon nitrogen carbon ceramic fibers powder are crossed into 750 mesh respectively；
Alumina-silicate ceramic fibre powder after sieving and silicon nitrogen carbon ceramic fibers powder are added into water, use mixer It is stirred, mixing speed 50/min, stirs 22min, obtain batch mixing slurries a；
Alundum (Al2O3) and zirconium oxide are added into batch mixing slurries a, mixing speed 165r/min, mixing time is 4min, obtain batch mixing slurries b；
Then cement, Aluminate and graphite powder are added into batch mixing slurries b, disperseed in dispersant, dispersant turns Speed is 110r/min, jitter time 6min, obtains batch mixing slurries c；
Batch mixing slurries c is poured into metal die with holes, using vacuum filtration, moisture is extracted out, then carries out machinery pressure Wet base is made；
Room temperature 21h, it is then placed in into baking oven and dries, oven temperature is 95 DEG C, drying time 6h, is done Base；
Dry body being put into Muffle furnace, gradually heating, constantly pyrolysis, programming rate is 36 DEG C/min, rises to 940 DEG C, It is incubated 2.5h；
After soaking time, then natural cooling, is cooled to room temperature, obtains insulation material.
Embodiment 3
For the ceramic wool insulation material of industrial smelting furnace, insulation material by mass component by being formed as follows：
Preparation method for the ceramic wool insulation material of industrial smelting furnace：
Alumina-silicate ceramic fibre, silicon nitrogen carbon ceramic fibers, alundum (Al2O3), zirconium oxide, the aluminium for accurately weighing formula ratio are molten Glue, titanate esters and glass dust；
Alumina-silicate ceramic fibre and silicon nitrogen carbon ceramic fibers are separately added into airslide disintegrating mill and crushed, is crushed to Particle diameter is 14 μm；
Alumina-silicate ceramic fibre powder and silicon nitrogen carbon ceramic fibers powder are crossed into 800 mesh respectively；
Alumina-silicate ceramic fibre powder after sieving and silicon nitrogen carbon ceramic fibers powder are added into water, use mixer It is stirred, mixing speed 40r/min, stirs 24min, obtain batch mixing slurries a；
Alundum (Al2O3) and zirconium oxide are added into batch mixing slurries a, mixing speed 140r/min, mixing time is 6min, obtain batch mixing slurries b；
Then Alumina gel, titanate esters and glass dust are added into batch mixing slurries b, disperseed in dispersant, dispersant Rotating speed is 120r/min, jitter time 5min, obtains batch mixing slurries c；
Batch mixing slurries c is poured into metal die with holes, using vacuum filtration, moisture is extracted out, then carries out machinery pressure Wet base is made；
Room temperature 20h, it is then placed in into baking oven and dries, oven temperature is 100 DEG C, drying time 5h, is done Base；
Dry body being put into Muffle furnace, gradually heating, constantly pyrolysis, programming rate is 30 DEG C/min, rises to 800 DEG C, It is incubated 3h；
After soaking time, then natural cooling, is cooled to room temperature, obtains insulation material.
Embodiment 4
For the ceramic wool insulation material of industrial smelting furnace, insulation material by mass component by being formed as follows：
Preparation method for the ceramic wool insulation material of industrial smelting furnace：
The accurate alumina-silicate ceramic fibre for weighing formula ratio, silicon nitrogen carbon ceramic fibers, alundum (Al2O3), zirconium oxide, cement, Titanate esters and flake asbestos；
Alumina-silicate ceramic fibre and silicon nitrogen carbon ceramic fibers are separately added into airslide disintegrating mill and crushed, is crushed to Particle diameter is 15 μm；
Alumina-silicate ceramic fibre powder and silicon nitrogen carbon ceramic fibers powder are crossed into 650 mesh respectively；
Alumina-silicate ceramic fibre powder after sieving and silicon nitrogen carbon ceramic fibers powder are added into water, use mixer It is stirred, mixing speed 65/min, stirs 20min, obtain batch mixing slurries a；
Alundum (Al2O3) and zirconium oxide are added into batch mixing slurries a, mixing speed 150r/min, mixing time is 5min, obtain batch mixing slurries b；
Then cement, titanate esters and flake asbestos are added into batch mixing slurries b, disperseed in dispersant, dispersant turns Speed is 90r/min, jitter time 7min, obtains batch mixing slurries c；
Batch mixing slurries c is poured into metal die with holes, using vacuum filtration, moisture is extracted out, then carries out machinery pressure Wet base is made；
Room temperature 23h, it is then placed in into baking oven and dries, oven temperature is 85 DEG C, drying time 7h, is done Base；
Dry body being put into Muffle furnace, gradually heating, constantly pyrolysis, programming rate is 32 DEG C/min, rises to 850 DEG C, It is incubated 3h；
After soaking time, then natural cooling, is cooled to room temperature, obtains insulation material.
Embodiment 5
For the ceramic wool insulation material of industrial smelting furnace, insulation material by mass component by being formed as follows：
Preparation method for the ceramic wool insulation material of industrial smelting furnace：
The accurate alumina-silicate ceramic fibre for weighing formula ratio, silicon nitrogen carbon ceramic fibers, alundum (Al2O3), zirconium oxide, cement, Aluminate and mica powder；
Alumina-silicate ceramic fibre and silicon nitrogen carbon ceramic fibers are separately added into airslide disintegrating mill and crushed, is crushed to Particle diameter is 17 μm；
Alumina-silicate ceramic fibre powder and silicon nitrogen carbon ceramic fibers powder are crossed into 680 mesh respectively；
Alumina-silicate ceramic fibre powder after sieving and silicon nitrogen carbon ceramic fibers powder are added into water, use mixer It is stirred, mixing speed 58/min, stirs 21min, obtain batch mixing slurries a；
Alundum (Al2O3) and zirconium oxide are added into batch mixing slurries a, mixing speed 156r/min, mixing time is 4min, obtain batch mixing slurries b；
Then cement, Aluminate and mica powder are added into batch mixing slurries b, disperseed in dispersant, dispersant turns Speed is 104r/min, jitter time 6min, obtains batch mixing slurries c；
Batch mixing slurries c is poured into metal die with holes, using vacuum filtration, moisture is extracted out, then carries out machinery pressure Wet base is made；
Room temperature 22h, it is then placed in into baking oven and dries, oven temperature is 89 DEG C, drying time 6h, is done Base；
Dry body being put into Muffle furnace, gradually heating, constantly pyrolysis, programming rate is 35 DEG C/min, rises to 880 DEG C, It is incubated 2.8h；
After soaking time, then natural cooling, is cooled to room temperature, obtains insulation material.
Ceramic wool insulation material prepared by embodiment 1-5 preparation method, applied on industrial smelting furnace, at 1000 DEG C When measure and calculation of thermal conductivity and insulation rate.
Test event Thermal conductivity factor (w/m.k) Insulation rate (%)
Embodiment 1 0.018 81
Embodiment 2 0.021 82
Embodiment 3 0.016 83
Embodiment 4 0.017 82
Embodiment 5 0.016 84
Data in performance test table can be seen that embodiment 1-5 composites, and not only thermal conductivity factor is low, Er Qiebao Warm rate is very high, substantially increases the combination property of ceramic wool insulation material, substantially increases the efficiency of heating surface of industrial smelting furnace, Save substantial amounts of manpower and materials.
Above is to specific embodiment provided by the present invention.
The present invention is described in detail specification, structural principle of the specific case used herein to the present invention And embodiment is set forth, above example is only intended to help the method and its core concept for understanding the present invention；Meanwhile For those of ordinary skill in the art, according to the thought of the present invention, have change in specific embodiments and applications Become part, in summary, this specification content should not be construed as limiting the invention.

Claims (9)

1. the preparation method of the ceramic wool insulation material for industrial smelting furnace, it is characterised in that method includes：
Alumina-silicate ceramic fibre and silicon nitrogen carbon ceramic fibers are separately added into airslide disintegrating mill and crushed, is crushed to particle diameter For 14-20 μm；
Alumina-silicate ceramic fibre powder and silicon nitrogen carbon ceramic fibers powder are crossed into 600-800 mesh respectively；
Alumina-silicate ceramic fibre powder after sieving and silicon nitrogen carbon ceramic fibers powder are added into water, carried out with mixer Stirring, mixing speed 40-70r/min, 18-24min is stirred, obtains batch mixing slurries a；
Alundum (Al2O3) and zirconium oxide are added into batch mixing slurries a, mixing speed 140-180r/min, mixing time is 3-6min, obtain batch mixing slurries b；
Then binding agent, surfactant and filler are added into batch mixing slurries b, disperseed in dispersant, dispersant Rotating speed is 80-120r/min, jitter time 5-8min, obtains batch mixing slurries c；
Batch mixing slurries c is poured into metal die with holes, using vacuum filtration, extracts moisture out, mechanical compaction is then carried out and obtains To wet base；
It is put into Muffle furnace, gradually heating, constantly pyrolysis, programming rate is 30-40 DEG C/min, rises to 800-1000 DEG C, is protected Warm 2-3h；
After soaking time, then natural cooling, is cooled to room temperature, obtains insulation material.
2. preparation method as claimed in claim 1, it is characterised in that method includes：
Alumina-silicate ceramic fibre and silicon nitrogen carbon ceramic fibers are separately added into airslide disintegrating mill and crushed, is crushed to particle diameter For 15-18 μm；
Alumina-silicate ceramic fibre powder and silicon nitrogen carbon ceramic fibers powder are crossed into 650-750 mesh respectively；
Alumina-silicate ceramic fibre powder after sieving and silicon nitrogen carbon ceramic fibers powder are added into water, carried out with mixer Stirring, mixing speed 50-65/min, 20-22min is stirred, obtains batch mixing slurries a；
Alundum (Al2O3) and zirconium oxide are added into batch mixing slurries a, mixing speed 150-165r/min, mixing time is 4-5min, obtain batch mixing slurries b；
Then binding agent, surfactant and filler are added into batch mixing slurries b, disperseed in dispersant, dispersant Rotating speed is 90-110r/min, jitter time 6-7min, obtains batch mixing slurries c；
Batch mixing slurries c is poured into metal die with holes, using vacuum filtration, extracts moisture out, mechanical compaction is then carried out and obtains To wet base；
It is put into Muffle furnace, gradually heating, constantly pyrolysis, programming rate is 32-36 DEG C/min, rises to 850-940 DEG C, insulation 2.5‐3h；
After soaking time, then natural cooling, is cooled to room temperature, obtains insulation material.
3. preparation method as claimed in claim 1, it is characterised in that method includes：
Alumina-silicate ceramic fibre and silicon nitrogen carbon ceramic fibers are separately added into airslide disintegrating mill and crushed, is crushed to particle diameter For 17 μm；
Alumina-silicate ceramic fibre powder and silicon nitrogen carbon ceramic fibers powder are crossed into 680 mesh respectively；
Alumina-silicate ceramic fibre powder after sieving and silicon nitrogen carbon ceramic fibers powder are added into water, carried out with mixer Stirring, mixing speed 58/min, 21min is stirred, obtains batch mixing slurries a；
Alundum (Al2O3) and zirconium oxide are added into batch mixing slurries a, mixing speed 156r/min, mixing time is 4min, obtain batch mixing slurries b；
Then binding agent, surfactant and filler are added into batch mixing slurries b, disperseed in dispersant, dispersant Rotating speed is 104r/min, jitter time 6min, obtains batch mixing slurries c；
Batch mixing slurries c is poured into metal die with holes, using vacuum filtration, extracts moisture out, mechanical compaction is then carried out and obtains To wet base；
It is put into Muffle furnace, gradually heating, constantly pyrolysis, programming rate is 35 DEG C/min, rises to 880 DEG C, is incubated 2.8h；
After soaking time, then natural cooling, is cooled to room temperature, obtains insulation material.
4. such as preparation method any claim 1-3, it is characterised in that：Also include the aluminum silicate ceramic for accurately weighing formula ratio Fiber, silicon nitrogen carbon ceramic fibers, alundum (Al2O3), zirconium oxide, binding agent, surfactant and filler.
5. such as preparation method any claim 1-3, it is characterised in that：Also include wet base room temperature 20-24h, then It is put into baking oven and dries, oven temperature is 80-100 DEG C, drying time 5-8h, obtains dry body.
6. preparation method as claimed in claim 5, it is characterised in that：Wet base room temperature 21-23h is then placed in into baking oven Dry, oven temperature is 85-95 DEG C, drying time 6-7h, obtains dry body.
7. such as preparation method any claim 1-3, it is characterised in that：The binding agent is silicic acid gel, cement or aluminium One kind in colloidal sol.
8. such as preparation method any claim 1-3, it is characterised in that：The surfactant is titanate esters or aluminic acid Ester.
9. such as preparation method any claim 1-3, it is characterised in that：The filler is talcum powder, graphite powder, glass One kind in powder, flake asbestos, mica powder and silica flour.
CN201710841569.4A 2017-09-18 2017-09-18 Preparation method for the ceramic wool insulation material of industrial smelting furnace Pending CN107522498A (en)

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CN112521169A (en) * 2020-12-16 2021-03-19 山东鲁阳节能材料股份有限公司 High-density ceramic fiber board and preparation method thereof
CN112723867A (en) * 2021-02-08 2021-04-30 淄博雨程节能环保科技有限公司 Plastic ceramic fiber product

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CN101423400A (en) * 2008-12-04 2009-05-06 西南铝业（集团）有限责任公司 Refractory materials and refractory equipment for aluminum alloy melt casting, and method for preparing refractory equipment
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Publication number Priority date Publication date Assignee Title
CN112521169A (en) * 2020-12-16 2021-03-19 山东鲁阳节能材料股份有限公司 High-density ceramic fiber board and preparation method thereof
CN112723867A (en) * 2021-02-08 2021-04-30 淄博雨程节能环保科技有限公司 Plastic ceramic fiber product

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Application publication date: 20171229