CN105837231B - Carborundum functional membrane material and preparation method thereof - Google Patents

Carborundum functional membrane material and preparation method thereof Download PDF

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Publication number
CN105837231B
CN105837231B CN201610173092.2A CN201610173092A CN105837231B CN 105837231 B CN105837231 B CN 105837231B CN 201610173092 A CN201610173092 A CN 201610173092A CN 105837231 B CN105837231 B CN 105837231B
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carborundum
elema
membrane material
functional membrane
preparation
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CN105837231A (en
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宋道伟
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Shandong Xinyi New Material Technology Co., Ltd
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Shandong Aoyuxiang Silicon Carbide Technology Co Ltd
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    • 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
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5053—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials non-oxide ceramics
    • C04B41/5062—Borides, Nitrides or Silicides
    • C04B41/5066—Silicon nitride
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials
    • C04B41/87—Ceramics

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

The present invention relates to a kind of membrane material, and in particular to a kind of carborundum functional membrane material and preparation method thereof.Raw material includes Ludox, aluminium oxide, calcium oxide, silica, sodium oxide molybdena, silicon nitride and water.It is coated in during use on Elema surface, reaches and save the energy, improve work efficiency (reduce and replace the Elema time) and extend the effect of Elema service life.The present invention also provides its preparation method, is added all in ball mills, ball milling；The good raw material of ball milling is stood in ball mill, forms liquid carborundum functional membrane material；Liquid carborundum functional membrane material is uniformly applied to the surface of Elema, is dried, is put into drying in drying baker；The Elema for scribbling carborundum functional membrane material dried is put into calcining furnace and is calcined, after the completion of calcining, Elema surface forms the carborundum functional membrane material of resistance to nitridation.

Description

Carborundum functional membrane material and preparation method thereof
Technical field
The present invention relates to a kind of membrane material, and in particular to a kind of carborundum functional membrane material and preparation method thereof.
Background technology
Carborundum functional membrane material is mainly used in during silicon nitride combined silicon carbide product high-temperature firing (1350 degree To 1450 degree), one layer of carborundum functional membrane material is applied on Elema and is used for protecting surface, mainly prevents Elema oxygen Change, former Elema can only use 3-4 heats (every during hot operation when not coating carborundum functional membrane material Heat is when 80 is small or so), after coating carborundum functional membrane material, the service life of Elema can be made to extend more than 50% (7-8 heats).
Existing Elema, can only use 3-4 heats (small 80 per heat when not coating carborundum functional membrane material When or so), the service life of Elema is short.
The content of the invention
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of carborundum functional membrane material, have and save The energy, improve work efficiency and extend the function of Elema service life.
Carborundum functional membrane material of the present invention, raw material include Ludox, aluminium oxide, calcium oxide, silica, oxygen Change sodium, silicon nitride and water.
Carborundum functional membrane material of the present invention, is preferably made of the raw material of following mass fraction：
Ludox 3%-6%, aluminium oxide 2%-4%, calcium oxide 4%-7%, silica 7%-9%, sodium oxide molybdena 17%- 19%th, silicon nitride 45%-55% and water 8%-10%.
Aluminium oxide, calcium oxide, silica, the granularity of sodium oxide molybdena and silicon nitride are below 5 microns.
The preparation method of carborundum functional membrane material of the present invention, comprises the following steps：
(1) ball mill mixing：Added all in ball mills, ball milling；
(2) precipitation reaction：The good raw material of ball milling is stood in ball mill, forms liquid carborundum functional membrane material；
(3) liquid carborundum functional membrane material is coated in surface, the drying of Elema：By liquid carborundum functional membrane Material is uniformly applied to the surface of Elema, dries, and is put into drying in drying baker；
(4) calcine：The Elema for scribbling carborundum functional membrane material dried is put into calcining furnace and is calcined, After the completion of calcining, Elema surface forms the carborundum functional membrane material of resistance to nitridation.
When Ball-milling Time described in step (1) is 2-3 small.
When time of repose described in step (2) is 3-4 small.
Drying described in step (3), when drying time is 2-3 small, drying temperature is 200-300 DEG C.
Calcining described in step (4), when calcination time is 5-7 small, 800-1000 DEG C of calcining heat.
As a kind of perferred technical scheme, the Elema includes heater, cold end and weld part；
Wherein：Heater is made of the raw material of following mass fraction：Carborundum 97%-98.7%, bonding agent 1%-3% and Boron nitride 0.1%-0.3%；
Cold end is made of the raw material of following mass fraction：Carborundum 30%-40%, bonding agent 3%-8%, graphite powder 1%-5%, metallic silicon 8%-15%, calcined petroleum coke 30%-40%, shell powder 1%-6% and maltodextrin 1%-6%；
Weld part is made of the raw material of following mass fraction：Resin 8%-15%, silica flour 10%-25%, silicon carbide micro-powder 50%-70% and graphite powder 7%-13%.
In conclusion the present invention has the following advantages：
(1) present invention plays anti-nitrogenation by selecting suitable component and content after mixing.
(2) carborundum functional membrane material of the present invention, which has, saves the energy, improves work efficiency and extends silicon-carbon The function of rod service life, carborundum functional membrane material are a kind of liquid, and when use is coated on Elema surface, the product Primarily directed to production silicon nitride products based on silicon carbide, in process of production, the surface temperature of Elema treats nitrogen at 1450 DEG C The SiClx combined silicon carbide product production cycle soon at the end of (80 be a cycle when small), toward stove in put nitrogen, nitrogen nitridation (corrosion) Elema especially severe, if Elema surface does not apply carborundum functional membrane material, can only use 3-4 heats, apply Upper carborundum functional membrane material can use 7-8 heats, and effect is obvious.(subtracted with reaching the saving energy, improving work efficiency Less replace the Elema time) and extension Elema service life effect.
Embodiment
With reference to embodiment, the present invention will be further described.
Embodiment 1
A kind of carborundum functional membrane material, is made of the raw material of following mass fraction：
Ludox 6kg, aluminium oxide 4kg, calcium oxide 7kg, silica 9kg, sodium oxide molybdena 19kg, silicon nitride 45kg and water 10kg。
The production technology of the carborundum functional membrane material, comprises the following steps：
(1) ball mill mixing：By above-mentioned raw materials Ludox, aluminium oxide, calcium oxide, silica, sodium oxide molybdena, silicon nitride, pure Water is proportionally added into ball mill, when ball milling 2 is small；
(2) precipitation reaction：By the good raw material of ball milling stood in ball mill 3 it is small when, formed liquid carborundum functional membrane Material；
(3) liquid carborundum functional membrane material is coated in surface, the drying of Elema：By liquid carborundum functional membrane Material is uniformly applied to the surface of Elema, dries, and is put into drying baker, when drying time 2 is small, 200 DEG C of drying temperature；
(4) high-temperature calcination：The Elema for scribbling carborundum functional membrane material dried is put into calcining furnace and is carried out Calcining, when calcination time 5 is small, 800 DEG C of calcining heat, after the completion of calcining, Elema surface forms the carbonization functional silicon of resistance to nitridation Property membrane material.
Embodiment 2
A kind of carborundum functional membrane material, is made of the raw material of following mass fraction：
Ludox 6%, aluminium oxide 3%, calcium oxide 4%, silica 7%, sodium oxide molybdena 17%, silicon nitride 55% and water 8%.
The production technology of the carborundum functional membrane material, comprises the following steps：
(1) ball mill mixing：By above-mentioned raw materials Ludox, aluminium oxide, calcium oxide, silica, sodium oxide molybdena, silicon nitride, pure Water is proportionally added into ball mill, when ball milling 3 is small；
(2) precipitation reaction：By the good raw material of ball milling stood in ball mill 4 it is small when, formed liquid carborundum functional membrane Material；
(3) liquid carborundum functional membrane material is coated in surface, the drying of Elema：By liquid carborundum functional membrane Material is uniformly applied to the surface of Elema, dries, and is put into drying baker, when drying time 3 is small, 300 DEG C of drying temperature；
(4) high-temperature calcination：The Elema for scribbling carborundum functional membrane material dried is put into calcining furnace and is carried out Calcining, when calcination time 7 is small, 1000 DEG C of calcining heat, after the completion of calcining, Elema surface forms the carbonization functional silicon of resistance to nitridation Property membrane material.
The Elema includes heater, cold end and weld part；
Wherein：Heater is made of the raw material of following mass fraction：Carborundum 97kg, bonding agent 2.9kg, boron nitride 0.1kg。
Cold end is made of the raw material of following mass fraction：Carborundum 30kg, bonding agent 8kg, graphite powder 5kg, metallic silicon 15kg, calcined petroleum coke 30kg, shell powder 6kg, maltodextrin 6kg.
Weld part is made of the raw material of following mass fraction：Resin 8kg, silica flour 10kg, silicon carbide micro-powder 70kg, graphite powder 12kg。
Embodiment 3
A kind of carborundum functional membrane material, is made of the raw material of following mass fraction：
Ludox 5%, aluminium oxide 3%, calcium oxide 6%, silica 8%, sodium oxide molybdena 18%, silicon nitride 51% and water 9%.
The production technology of the carborundum functional membrane material, comprises the following steps：
(1) ball mill mixing：By above-mentioned raw materials Ludox, aluminium oxide, calcium oxide, silica, sodium oxide molybdena, silicon nitride, pure Water is proportionally added into ball mill, when ball milling 2.5 is small；
(2) precipitation reaction：By the good raw material of ball milling stood in ball mill 3.5 it is small when, formed liquid carborundum feature Membrane material；
(3) liquid carborundum functional membrane material is coated in surface, the drying of Elema：By liquid carborundum functional membrane Material is uniformly applied to the surface of Elema, dries, and is put into drying baker, when drying time 2.5 is small, 250 DEG C of drying temperature；
(4) high-temperature calcination：The Elema for scribbling carborundum functional membrane material dried is put into calcining furnace and is carried out Calcining, when calcination time 5 is small, 900 DEG C of calcining heat, after the completion of calcining, Elema surface forms the carbonization functional silicon of resistance to nitridation Property membrane material.
Carborundum functional membrane material prepared by embodiment 1-3 is coated in Elema surface, one kind is formd and seems one layer The smooth crystallization pattern of ceramic surface, nitrogen is not easy to penetrate into Elema surface, so as to extend the service life of Elema.Ordinary silicon Carbon-point can only use 3-4 heats, coat carborundum functional membrane material of the present invention, can use 7-8 heats.

Claims (8)

  1. A kind of 1. carborundum functional membrane material for Elema, it is characterised in that：The carborundum functional membrane material, It is made of the raw material of following mass fraction：Ludox 3%-6%, aluminium oxide 2%-4%, calcium oxide 4%-7%, silica 7%-9%, oxidation Sodium 17%-19%, silicon nitride 45%-55% and water 8%-10%；
    The Elema includes heater, cold end and weld part；
    Wherein：Heater is made of the raw material of following mass fraction：Carborundum 97%-98.7%, bonding agent 1%-3% and boron nitride 0.1%-0.3%；
    Cold end is made of the raw material of following mass fraction：Carborundum 30%-40%, bonding agent 3%-8%, graphite powder 1%-5%, metal Silicon 8%-15%, calcined petroleum coke 30%-40%, shell powder 1%-6% and maltodextrin 1%-6%；
    Weld part is made of the raw material of following mass fraction：Resin 8%-15%, silica flour 10%-25%, silicon carbide micro-powder 50%-70% and Graphite powder 7%-13%.
  2. 2. the carborundum functional membrane material according to claim 1 for Elema, it is characterised in that：Aluminium oxide, oxygen Change the granularity of calcium, silica, sodium oxide molybdena and silicon nitride below 5 microns.
  3. 3. the carborundum functional membrane material according to claim 1 for Elema, it is characterised in that：Water is deionization Water.
  4. 4. a kind of preparation method of any carborundum functional membrane materials for Elema of claim 1-3, it is special Sign is：Comprise the following steps：
    （1）Ball mill mixing：All raw materials of carborundum functional membrane material are added in ball mill, ball milling；
    （2）Precipitation reaction：The good raw material of ball milling is stood in ball mill, forms liquid carborundum functional membrane material；
    （3）Liquid carborundum functional membrane material is uniformly applied to the surface of Elema, is dried, is put into drying in drying baker；
    （4）Calcining：The Elema for scribbling carborundum functional membrane material dried is put into calcining furnace and is calcined, is calcined After the completion of, Elema surface forms the carborundum functional membrane material of resistance to nitridation.
  5. 5. the preparation method of the carborundum functional membrane material according to claim 4 for Elema, it is characterised in that： Step（1）Described in Ball-milling Time for 2-3 it is small when.
  6. 6. the preparation method of the carborundum functional membrane material according to claim 4 for Elema, it is characterised in that： Step（2）Described in time of repose for 3-4 it is small when.
  7. 7. the preparation method of the carborundum functional membrane material according to claim 4 for Elema, it is characterised in that： Step（3）The drying, when drying time is 2-3 small, drying temperature is 200-300 DEG C.
  8. 8. the preparation method of the carborundum functional membrane material according to claim 4 for Elema, it is characterised in that： Step（4）The calcining, when calcination time is 5-7 small, 800-1000 DEG C of calcining heat.
CN201610173092.2A 2016-03-24 2016-03-24 Carborundum functional membrane material and preparation method thereof Active CN105837231B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108840686A (en) * 2018-08-27 2018-11-20 淄博德瑞兹电热元件有限公司 A kind of Elema silicon nitride coating and its preparation process

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CN1070933A (en) * 1992-09-18 1993-04-14 袁观银 Antioxidant coating for graphite electrode
CN1492006A (en) * 2002-10-23 2004-04-28 上海东康高热耐火制品有限公司 Silicon carbide heater of surface coating

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JPH0945467A (en) * 1995-07-31 1997-02-14 Sumitomo Osaka Cement Co Ltd Carbon heater and manufacture thereof
JP3587235B2 (en) * 1997-11-05 2004-11-10 三菱住友シリコン株式会社 Carbon heater for single crystal growing equipment
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Publication number Priority date Publication date Assignee Title
CN1070933A (en) * 1992-09-18 1993-04-14 袁观银 Antioxidant coating for graphite electrode
CN1492006A (en) * 2002-10-23 2004-04-28 上海东康高热耐火制品有限公司 Silicon carbide heater of surface coating

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Effective date of registration: 20200415

Address after: 255086 No.8, south of Huashan West Road, sibaoshan office, high tech Zone, Zibo City, Shandong Province

Patentee after: Shandong Xinyi New Material Technology Co., Ltd

Address before: 255086 Shandong city of Zibo province high tech Zone Four Baoshan office Yang Village

Patentee before: Shandong Aoyuxiang Silicon Carbide Technology Co.,Ltd.