CN108794009A - A kind of electromagnetism smelting furnace heater composite material - Google Patents

A kind of electromagnetism smelting furnace heater composite material Download PDF

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Publication number
CN108794009A
CN108794009A CN201810762816.6A CN201810762816A CN108794009A CN 108794009 A CN108794009 A CN 108794009A CN 201810762816 A CN201810762816 A CN 201810762816A CN 108794009 A CN108794009 A CN 108794009A
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Prior art keywords
parts
composite material
graphite
silicon carbide
smelting furnace
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CN201810762816.6A
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邱泽坚
邱嵘熙
张茗贵
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Foshan Gaojie Industrial Furnace Co Ltd
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Foshan Gaojie Industrial Furnace Co Ltd
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Priority to CN201810762816.6A priority Critical patent/CN108794009A/en
Publication of CN108794009A publication Critical patent/CN108794009A/en
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/522—Graphite
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    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
    • F27B14/061—Induction furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/06—Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427—Silicates other than clay, e.g. water glass
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C04B2235/3826—Silicon carbides
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/66—Specific sintering techniques, e.g. centrifugal sintering
    • C04B2235/661—Multi-step sintering
    • C—CHEMISTRY; METALLURGY
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance

Abstract

The invention discloses a kind of electromagnetism smelting furnace heater composite materials, and by mass fraction, its material component includes：36-44 parts of graphite, 28-36 parts of silicon carbide, 4-22 parts of silica 1,4-9 parts of alumina silicate, 15-25 parts of aluminium oxide, 8-15 parts of agglutinant.Composite material, is made the heater of electromagnetism smelting furnace by electromagnetism smelting furnace heater composite material, mainly the raw material based on graphite and silicon carbide, and since the resistance of graphite and silicon carbide reduces with the raising resistance value of temperature, at high temperature, heating efficiency is higher；And inorganic composite materials are formed with other materials, intensity is high, high temperature resistant so that its service life greatly prolongs.

Description

A kind of electromagnetism smelting furnace heater composite material
Technical field
The present invention relates to smelting furnace heating material technical field more particularly to a kind of electromagnetism smelting furnace heater composite woods Material.
Background technology
Electromagnetic induction industrial furnace is that whirlpool is generated inside heater under the induction coil alternating electromagnetism field action in induction furnace Stream, heater fever, heater by heat transmission to metal object, to achieve the effect that heating or fusing.
In practical applications, since heater impurity is more, resistance is larger, and heating efficiency is very for existing heater It is low, and since electromagnetism smelting furnace is usually to be melted to metal, fever temperature needs are especially high, at high temperature, existing hair While fever, due to being unable to high temperature resistant, itself is also being melted hot body, and intensity is not also high, its service life is caused to contract significantly Short, molten metal object is also mixed into impurity.
Invention content
In view of this, the present invention provides a kind of electromagnetism smelting furnace heater composite materials.
A kind of electromagnetism smelting furnace heater composite material, by mass fraction, its material component includes：36-44 parts of graphite, carbon 28-36 parts of SiClx, 4-22 parts of silica 1,4-9 parts of alumina silicate, 15-25 parts of aluminium oxide, 8-15 parts of agglutinant.
Preferably, by mass fraction, its material component includes：38-41 parts of graphite, 31-34 parts of silicon carbide, silica 1 6- 21 parts, 5-8 parts of alumina silicate, 17-23 parts of aluminium oxide, 9-13 parts of agglutinant.
Preferably, by mass fraction, its material component includes：40 parts of graphite, 32 parts of silicon carbide, 8 parts of silica 1, silicic acid 7 parts of aluminium, 21 parts of aluminium oxide, 11 parts of agglutinant.
Preferably, the graphite is steady Scaly graphite.
Preferably, the silica is nano silicon dioxide.
Preferably, the agglutinant is one or both of boric acid and portland cement.
Preferably, the agglutinant is boric acid.
The beneficial effects of the present invention are：Electromagnetism smelting furnace heater composite material, electromagnetism smelting furnace is made by composite material Heater, the main raw material based on graphite and silicon carbide, since the resistance of graphite and silicon carbide is with the raising resistance value of temperature Reduce, at high temperature, heating efficiency is higher；And inorganic composite materials are formed with other materials, intensity is high, and high temperature resistant makes Its service life is obtained to greatly prolong.
Specific implementation mode：
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described, Obviously, described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on the implementation in the present invention Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to The scope of protection of the invention.
It should be appreciated that ought use in this specification and in the appended claims, term " comprising " and "comprising" instruction Described feature, entirety, step, operation, the presence of element and/or component, but one or more of the other feature, whole is not precluded Body, step, operation, element, component and/or its presence or addition gathered.
It will be further appreciated that the term "and/or" used in description of the invention and the appended claims is Refer to any combinations and all possible combinations of one or more of associated item listed, and includes these combinations.
Embodiment 1
Electromagnetism smelting furnace heater composite material, by being formed as follows by mass component：
The preparation method of electromagnetism smelting furnace heater composite material：
Weigh steady Scaly graphite, silicon carbide, nano silicon dioxide, alumina silicate, aluminium oxide and the boric acid of component amount；
Steady Scaly graphite, silicon carbide, nano silicon dioxide, alumina silicate and aluminium oxide are put into drying box, it is dry The temperature inside the box is 135 DEG C, drying time 30min；
Steady Scaly graphite, silicon carbide, nano silicon dioxide, alumina silicate, aluminium oxide and boric acid after drying is added respectively Enter into ball mill, ball milling 55min；
Steady Scaly graphite, silicon carbide, nano silicon dioxide, alumina silicate, aluminium oxide and boric acid powder after ball milling is added Enter into high mixer, mixing velocity 450r/min, mixes 8min, obtain batch mixing a；
Batch mixing a is subjected to 300 mesh sieves, goes bulky grain powder；
Batch mixing a is molded (heater) green body using casting；
Molding blank is placed in furnace body, in the case where temperature is 500 DEG C, is pre-sintered 4h；
Temperature is risen to 1600 DEG C, is sintered again, sintering time 8h is cooled to room temperature, and obtains composite material (hair Hot body).
Embodiment 2
Electromagnetism smelting furnace heater composite material, by being formed as follows by mass component：
The preparation method of electromagnetism smelting furnace heater composite material：
Weigh flaky graphite, silicon carbide, aerosil, alumina silicate, aluminium oxide and the silicate cement of component amount Mud；
Flaky graphite, silicon carbide, aerosil, alumina silicate and aluminium oxide are put into drying box, it is dry The temperature inside the box is 132 DEG C, drying time 36min；
By flaky graphite, silicon carbide, aerosil, alumina silicate, aluminium oxide and the portland cement after drying It is added separately in ball mill, ball milling 52min；
By flaky graphite, silicon carbide, aerosil, alumina silicate, aluminium oxide and the portland cement after ball milling Powder is added into high mixer, mixing velocity 410r/min, mixes 9min, obtains batch mixing a；
Batch mixing a is subjected to 280 mesh sieves, goes bulky grain powder；
Batch mixing a is molded (heater) green body using casting；
Molding blank is placed in furnace body, in the case where temperature is 530 DEG C, is pre-sintered 3h；
Temperature is risen to 1720 DEG C, is sintered again, sintering time 6h is cooled to room temperature, and obtains composite material (hair Hot body).
Embodiment 3
Electromagnetism smelting furnace heater composite material, by being formed as follows by mass component：
The preparation method of electromagnetism smelting furnace heater composite material：
Weigh steady Scaly graphite, silicon carbide, nano silicon dioxide, alumina silicate, aluminium oxide, boric acid and the silicic acid of component amount Salt cement；
Steady Scaly graphite, silicon carbide, nano silicon dioxide, alumina silicate and aluminium oxide are put into drying box, it is dry The temperature inside the box is 120 DEG C, drying time 50min；
By steady Scaly graphite, silicon carbide, nano silicon dioxide, alumina silicate, aluminium oxide and boric acid, the silicate after drying Cement is added separately in ball mill, ball milling 30min；
By steady Scaly graphite, silicon carbide, nano silicon dioxide, alumina silicate, aluminium oxide and the boric acid and silicon after ball milling Acid salt cement powder is added into high mixer, mixing velocity 300r/min, mixes 15min, obtains batch mixing a；
Batch mixing a is subjected to 200 mesh sieves, goes bulky grain powder；
Batch mixing a is molded (heater) green body using casting；
Molding blank is placed in furnace body, in the case where temperature is 700 DEG C, is pre-sintered 2h；
Temperature is risen to 1750 DEG C, is sintered again, sintering time 5h is cooled to room temperature, and obtains composite material (hair Hot body).
Embodiment 4
Electromagnetism smelting furnace heater composite material, by being formed as follows by mass component：
The preparation method of electromagnetism smelting furnace heater composite material：
Weigh flaky graphite, silicon carbide, aerosil, alumina silicate, aluminium oxide and the silicate cement of component amount Mud；
Flaky graphite, silicon carbide, aerosil, alumina silicate and aluminium oxide are put into drying box, it is dry The temperature inside the box is 126 DEG C, drying time 45min；
By flaky graphite, silicon carbide, aerosil, alumina silicate, aluminium oxide and the portland cement after drying It is added separately in ball mill, ball milling 34min；
By flaky graphite, silicon carbide, aerosil, alumina silicate, aluminium oxide and the portland cement after ball milling Powder is added into high mixer, mixing velocity 330r/min, mixes 13min, obtains batch mixing a；
Batch mixing a is subjected to 230 mesh sieves, goes bulky grain powder；
Batch mixing a is molded (heater) green body using casting；
Molding blank is placed in furnace body, in the case where temperature is 670 DEG C, is pre-sintered 2h；
Temperature is risen to 1630 DEG C, is sintered again, sintering time 7h is cooled to room temperature, and obtains composite material (hair Hot body).
Embodiment 5
Electromagnetism smelting furnace heater composite material, by being formed as follows by mass component：
The preparation method of electromagnetism smelting furnace heater composite material：
Weigh steady Scaly graphite, silicon carbide, nano silicon dioxide, alumina silicate, aluminium oxide and the boric acid of component amount；
Steady Scaly graphite, silicon carbide, nano silicon dioxide, alumina silicate and aluminium oxide are put into drying box, it is dry The temperature inside the box is 128 DEG C, drying time 39min；
Steady Scaly graphite, silicon carbide, nano silicon dioxide, alumina silicate, aluminium oxide and boric acid after drying is added respectively Enter into ball mill, ball milling 44min；
Steady Scaly graphite, silicon carbide, nano silicon dioxide, alumina silicate, aluminium oxide and boric acid powder after ball milling is added Enter into high mixer, mixing velocity 380r/min, mixes 11min, obtain batch mixing a；
Batch mixing a is subjected to 260 mesh sieves, goes bulky grain powder；
Batch mixing a is molded (heater) green body using casting；
Molding blank is placed in furnace body, in the case where temperature is 640 DEG C, is pre-sintered 3h；
Temperature is risen to 1680 DEG C, is sintered again, sintering time 6h is cooled to room temperature, and obtains composite material (hair Hot body).
By the composite material of embodiment 1-5, composite material is made to the heater of electromagnetism smelting furnace, test respectively its intensity, Insulation performance and high temperature resistance, test result is as follows：
It can be seen that the composite material of embodiment 1-5 according to the data in performance test table, flexural strength can reach 45Mpa, under room temperature, resistivity is about 7 × 10-6, but at 1000 DEG C of high temperature, resistivity can reach 0.32 × 10-6, and refractoriness can averagely reach 1750 DEG C.
It is to specific embodiment provided by the present invention above.
The present invention is described in detail in specification, structural principle of the specific case used herein to the present invention And embodiment is expounded, above example is merely used to help understand the method and its core concept of the present invention；Meanwhile For those of ordinary skill in the art, according to the thought of the present invention, has change in specific embodiments and applications Become place, in conclusion the content of the present specification should not be construed as limiting the invention.

Claims (7)

1. a kind of electromagnetism smelting furnace heater composite material, which is characterized in that by mass fraction, its material component includes：Graphite 36-44 parts, 28-36 parts of silicon carbide, 4-22 parts of silica 1,4-9 parts of alumina silicate, 15-25 parts of aluminium oxide, 8-15 parts of agglutinant.
2. composite material according to claim 1, which is characterized in that by mass fraction, its material component includes：Graphite 38- 41 parts, 31-34 parts of silicon carbide, 6-21 parts of silica 1,5-8 parts of alumina silicate, 17-23 parts of aluminium oxide, 9-13 parts of agglutinant.
3. composite material according to claim 2, which is characterized in that by mass fraction, its material component includes：Graphite 40 Part, 32 parts of silicon carbide, 8 parts of silica 1,7 parts of alumina silicate, 21 parts of aluminium oxide, 11 parts of agglutinant.
4. according to any composite materials of claim 1-3, it is characterised in that：The graphite is steady Scaly graphite.
5. according to any composite materials of claim 1-3, it is characterised in that：The silica is nanometer titanium dioxide Silicon.
6. according to any composite materials of claim 1-3, it is characterised in that：The agglutinant is boric acid and silicate cement One or both of mud.
7. composite material according to claim 6, it is characterised in that：The agglutinant is boric acid.
CN201810762816.6A 2018-07-12 2018-07-12 A kind of electromagnetism smelting furnace heater composite material Pending CN108794009A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810762816.6A CN108794009A (en) 2018-07-12 2018-07-12 A kind of electromagnetism smelting furnace heater composite material

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Application Number Priority Date Filing Date Title
CN201810762816.6A CN108794009A (en) 2018-07-12 2018-07-12 A kind of electromagnetism smelting furnace heater composite material

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103025680A (en) * 2011-07-11 2013-04-03 西格里碳素欧洲公司 Composite refractory for an inner lining of a blast furnace
CN105541346A (en) * 2015-12-11 2016-05-04 青岛宏宇环保空调设备有限公司 Graphite refractory material
CN107686354A (en) * 2017-09-18 2018-02-13 佛山市高捷工业炉有限公司 A kind of blank of crucible

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103025680A (en) * 2011-07-11 2013-04-03 西格里碳素欧洲公司 Composite refractory for an inner lining of a blast furnace
US9422199B2 (en) * 2011-07-11 2016-08-23 Sgl Carbon Se Composite refractory for an inner lining of a blast furnace
CN105541346A (en) * 2015-12-11 2016-05-04 青岛宏宇环保空调设备有限公司 Graphite refractory material
CN107686354A (en) * 2017-09-18 2018-02-13 佛山市高捷工业炉有限公司 A kind of blank of crucible

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Application publication date: 20181113