CN106946558A - A kind of forsterite periclase spinelle complex phase lightweight refracrory and preparation method thereof - Google Patents

A kind of forsterite periclase spinelle complex phase lightweight refracrory and preparation method thereof Download PDF

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CN106946558A
CN106946558A CN201710258401.0A CN201710258401A CN106946558A CN 106946558 A CN106946558 A CN 106946558A CN 201710258401 A CN201710258401 A CN 201710258401A CN 106946558 A CN106946558 A CN 106946558A
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forsterite
complex phase
raw material
magnesium
lightweight refracrory
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CN106946558B (en
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赵飞
葛铁柱
刘新红
贾全利
任桢
陈留刚
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Zhengzhou Jinheyuan Refractory Co ltd
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Zhengzhou University
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/16Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay
    • C04B35/20Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silicates other than clay rich in magnesium oxide, e.g. forsterite
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66Monolithic refractories or refractory mortars, including those whether or not containing clay
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/36Glass starting materials for making ceramics, e.g. silica glass
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    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
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    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
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Abstract

The present invention relates to a kind of forsterite periclase spinelle complex phase lightweight refracrory and preparation method thereof.This method comprises the following steps:10~70% magnesia raw material, 1~60% magnesium siliceous raw material, 1~30% siliceous raw material and 5~30% alumina-silica pore forming agent are well mixed, then 2~10% bonding agent of additional above-mentioned raw materials mass percent sum is kneaded, and obtains mixing pug;Pug mechanical pressing is obtained being put into after base substrate, body drying in high temperature kiln and calcined 2~8 hours under conditions of 1500~1650 DEG C, that is, obtains forsterite periclase spinelle complex phase lightweight refracrory.The present invention uses alumina-silica inorganic lightweight material for pore forming agent, is discharged in production process without gas from material internal, does not form a large amount of insertion stomatas;Obtained forsterite periclase spinelle complex phase lightweight refracrory has the characteristics of compressive resistance is high, heat-proof quality is good, high-temperature behavior is excellent.

Description

A kind of forsterite-square magnesium stone-spinel complex phase lightweight refracrory and its preparation Method
Technical field
The present invention relates to a kind of light thermal-shield refractory material used by fire resisting material field, more particularly to a kind of magnesium olive Stone-square magnesium stone-spinel complex phase lightweight refracrory and preparation method thereof.
Background technology
The light thermal-shield refractory material of function admirable is used in high temperature kiln, furnace heat efficiency can be effectively improved, dropped Low-heat is consumed.However, traditional porous refractory is due to short texture, combine weak between crystal, the apparent porosity of insertion is high Cause that the compression strength of material is poor, temperature in use is low, effect of heat insulation is general, therefore the high performance light thermal-shield refractory of Speeding up development Material is one of presently most important developing direction.
Current complex phase porous material is based on corundum-mullite matter and periclase-white olivine, forsterite-side's magnesium The application of stone-spinel complex phase fire material is relatively fewer.Literature research shows that forsterite-square magnesium stone-spinel complex phase is resistance to Fiery material is with very excellent normal temperature and high-temperature behavior.(Othman A M G, Khalil N M. Sintering of magnesia refractories through the formation of periclase- forsterite- spinel Phases [ J ] Ceramics international, 2005, (31):1117- 1121).It is porous light further to enrich Porous periclase-forsterite-spinelle composite ceramic material of the species of material, patent of invention " and preparation method thereof "(CN 104086206 A)Disclose with magnesite, clay powder and Al (OH)3Powder is primary raw material, utilizes in magnesite heating process points Solve CO2The pore formation mechanism of gas, is prepared for porous periclase-forsterite-spinelle composite ceramic material.This method is in calcining During have a large amount of gases from material internal discharge, prepared stomata is generally insertion shape stomata, to the normal temperature and high temperature of material Mechanical property is adversely affected.
The content of the invention
The object of the invention be exactly directed to the weak point in the presence of above-mentioned prior art and provide a kind of compressive resistance it is high, Heat-proof quality is good, temperature in use is high, the forsterite of high volume good stability-square magnesium stone-spinel complex phase light-weight refractory material Material and preparation method thereof.
The purpose of the present invention can be realized by following technical proposals:
Forsterite-square magnesium stone-spinel complex phase lightweight refracrory of the present invention includes the raw material of following weight percentage: 10~70% magnesia raw material, 1~60% magnesium siliceous raw material, 1~30% siliceous raw material and 5~30% aluminium silicon Matter pore forming agent, and above-mentioned raw materials percentage by weight sum 2~10% bonding agent.
Magnesia raw material of the present invention is derived from highly-purity magnesite, magnesite clinker, fused magnesite, seawater magnesia and bittern One or more of combinations in magnesia, raw material particle size≤0.088mm.Described magnesium siliceous raw material is derived from high silicon magnesia, magnesium silicon One or more of combinations in sand, forsterite, serpentine, talcum, raw material particle size≤0.088mm.Described titanium dioxide Siliceous raw material is derived from SiO in one or more of combinations in vitreous silica, siliceous clinker or natural quartz, raw material2Quality hundred Divide content >=98.0%.Described alumina-silica pore forming agent be derived from one kind in glass bead, fly ash float or closed perlite or Several combinations.Described bonding agent is derived from one in spent pulping liquor, dextrin, magnesium chloride, polyethylene glycol or silicon dioxide gel Plant or several combinations.
The preparation method step of the present invention is as follows:
(1)Magnesia raw material, magnesium siliceous raw material, siliceous raw material and alumina-silica pore forming agent are well mixed, added Bonding agent is kneaded, and obtains pug;
(2)Above-mentioned pug mechanical pressing is obtained into base substrate;
(3)It will be put into high temperature kiln and calcined 2~8 hours under the conditions of 1500~1650 DEG C after body drying, that is, obtain magnesium olive Olive stone-square magnesium stone-spinel complex phase lightweight refracrory.
Forsterite of the present invention-square magnesium stone-spinel complex phase lightweight refracrory is using inorganic lightweight material as increasing Hole agent, make use of the mechanism of inorganic material Reaction-diffusion terms in sintering process, and the homogenizing of composition is reached by Reaction-diffusion terms;It is made Standby forsterite-square magnesium stone-spinel complex phase lightweight refracrory is using forsterite as principal crystalline phase, and periclase and spinelle are Secondary crystalline phase;Material hole wall structure is fine and close, does not form a large amount of continuous insertion stomatas;Prepared forsterite-periclase-point is brilliant The cold crushing strength of stone complex phase lightweight refracrory is 15~80MPa, and bulk density is 1.2~2.0g/cm3, loading softening Temperature(0.2MPa)≥1500℃.
Beneficial effects of the present invention are as follows:
The present invention utilizes the inorganic lightweight material of alumina-silica for pore forming agent, and organic pore former or carbonate are avoided in preparation process Pore former because produced in calcination process gas discharge formed by insertion stomata.Material employs high temperature in preparation process Calcine technology, the hole wall structure formed is fine and close, and intergranular combines densification and insertion stomata is less, is conducive to obtaining preferable normal temperature Performance and high-temperature behavior.
Brief description of the drawings
Fig. 1 is the XRD spectrum of forsterite-square magnesium stone-spinel complex phase lightweight refracrory.
Fig. 2 is the microstructure photograph of forsterite-square magnesium stone-spinel complex phase lightweight refracrory.
Embodiment:
The present invention is further described below with reference to embodiment:
Embodiment 1
By mass percentage by 60% magnesite clinker fine powder, 10% magnesium silica sand fine powder, 15% vitreous silica and 15% closed pore Perlite be well mixed, then additional above-mentioned raw materials mass percent sum 4% dextrin as additive, be uniformly mixing to obtain mixed Close pug;Pug mechanical pressing is obtained into base substrate;After body drying, place into high temperature furnace and calcine 5 under the conditions of 1550 DEG C Hour, that is, obtain forsterite-square magnesium stone-spinel complex phase lightweight refracrory.
The technical indicator of forsterite-square magnesium stone-spinel complex phase lightweight refracrory prepared by the present embodiment is:Body Product density 1.3g/cm3, compressive resistance is 18MPa, and refractoriness under load is(0.2MPa)For 1520 DEG C.
Embodiment 2
55% fused magnesite fine powder, 10% serpentine, 15% natural quartz and 20% flyash are floated by mass percentage Pearl be well mixed, then additional above-mentioned raw materials mass percent sum 5% spent pulping liquor as additive, be uniformly mixing to obtain mixed Close pug;Pug mechanical pressing is obtained into base substrate;After body drying, place into high temperature furnace and calcine 6 under the conditions of 1600 DEG C Hour, that is, obtain forsterite-square magnesium stone-spinel complex phase lightweight refracrory.
The technical indicator of forsterite-square magnesium stone-spinel complex phase lightweight refracrory prepared by the present embodiment is:Body Product density 1.25g/cm3, compressive resistance is 32MPa, and refractoriness under load is(0.2MPa)For 1580 DEG C.
Embodiment 3
It is by mass percentage that 60% highly-purity magnesite fine powder, 10% forsterite, 10% siliceous clinker and 20% vitreous is micro- Pearl be well mixed, then additional above-mentioned raw materials mass percent sum 5% magnesium chloride as additive, be uniformly mixing to obtain mixing Pug;Pug mechanical pressing is obtained into base substrate;After body drying, the calcining 4 under the conditions of 1580 DEG C is placed into high temperature furnace small When, that is, obtain forsterite-square magnesium stone-spinel complex phase lightweight refracrory.
The technical indicator of forsterite-square magnesium stone-spinel complex phase lightweight refracrory prepared by the present embodiment is:Body Product density 1.5g/cm3, compressive resistance is 38MPa, and refractoriness under load is(0.2MPa)For 1530 DEG C.

Claims (8)

1. a kind of forsterite-square magnesium stone-spinel complex phase lightweight refracrory, it is characterised in that:It includes following weight hundred Divide the raw material of ratio:Wherein 10~70% magnesia raw material, 1~60% magnesium siliceous raw material, 1~30% siliceous original Material and 5~30% alumina-silica pore forming agent, and above-mentioned raw materials percentage by weight sum 2~10% bonding agent.
2. forsterite according to claim 1-square magnesium stone-spinel complex phase lightweight refracrory, it is characterised in that:Institute The magnesia raw material stated is derived from one kind or several in highly-purity magnesite, magnesite clinker, fused magnesite, seawater magnesia and brine magnesia The combination planted, raw material particle size≤0.088mm.
3. forsterite according to claim 1-square magnesium stone-spinel complex phase lightweight refracrory, it is characterised in that:Institute The magnesium siliceous raw material stated is derived from one or more of combinations in high silicon magnesia, magnesium silica sand, forsterite, serpentine, talcum, former Expect particle diameter≤0.088mm.
4. forsterite according to claim 1-square magnesium stone-spinel complex phase lightweight refracrory, it is characterised in that:Institute The siliceous raw material stated is derived from one or more of combinations in vitreous silica, siliceous clinker or natural quartz, raw material SiO2Weight/mass percentage composition >=98.0%.
5. forsterite according to claim 1-square magnesium stone-spinel complex phase lightweight refracrory, it is characterised in that:Institute The alumina-silica pore forming agent stated is derived from one or more of combinations in glass bead, fly ash float or closed perlite.
6. forsterite according to claim 1-square magnesium stone-spinel complex phase lightweight refracrory, it is characterised in that:Institute The bonding agent stated is derived from one or more of groups in spent pulping liquor, dextrin, magnesium chloride, polyethylene glycol or silicon dioxide gel Close.
7. a kind of method for preparing forsterite described in claim 1-square magnesium stone-spinel complex phase lightweight refracrory, It is characterized in that:Methods described step is as follows:
(1)Magnesia raw material, magnesium siliceous raw material, siliceous raw material and alumina-silica pore forming agent are well mixed, added Bonding agent is kneaded, and obtains pug;
(2)Above-mentioned pug mechanical pressing is obtained into base substrate;
(3)It will be put into high temperature kiln and calcined 2~8 hours under the conditions of 1500~1650 DEG C after body drying, that is, obtain magnesium olive Olive stone-square magnesium stone-spinel complex phase lightweight refracrory.
8. method according to claim 7, it is characterised in that:Described forsterite-square magnesium stone-spinel complex phase lightweight Refractory material make use of the mechanism of inorganic material Reaction-diffusion terms in sintering process, pass through using inorganic lightweight material as pore forming agent Reaction-diffusion terms reach the homogenizing of composition;Prepared forsterite-square magnesium stone-spinel complex phase lightweight refracrory is with olivine For principal crystalline phase, periclase and spinelle are time crystalline phase;Material hole wall structure is fine and close, does not form a large amount of continuous insertion stomatas;Institute The cold crushing strength of the forsterite of preparation-square magnesium stone-spinel complex phase lightweight refracrory is 15~80MPa, and volume is close Spend for 1.2~2.0g/cm3, refractoriness under load under the conditions of 0.2 MPa >=1500 DEG C.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108129137A (en) * 2018-01-12 2018-06-08 安徽海螺暹罗耐火材料有限公司 Large-scale cement rotary kiln composite magnesium aluminate spinel brick and its production method
CN110922164A (en) * 2019-12-11 2020-03-27 中南大学 Preparation method of forsterite type complex phase heat insulation material
CN111747732A (en) * 2020-05-13 2020-10-09 九江市璀鑫新材料有限公司 High-tightness magnesium composite material and manufacturing method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101113097A (en) * 2007-06-29 2008-01-30 武汉钢铁(集团)公司 Infrared radiation porous ceramics on furnace lining firebrick and preparation method thereof
CN106431435A (en) * 2016-09-22 2017-02-22 郑州大学 Porous periclase-forsterite multiphase material and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101113097A (en) * 2007-06-29 2008-01-30 武汉钢铁(集团)公司 Infrared radiation porous ceramics on furnace lining firebrick and preparation method thereof
CN106431435A (en) * 2016-09-22 2017-02-22 郑州大学 Porous periclase-forsterite multiphase material and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
A.G.M.OTHMAN等: "Sintering of magnesia refractories through the formation of periclase–forsterite–spinel phases", 《CERAMICS INTERNATIONAL》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108129137A (en) * 2018-01-12 2018-06-08 安徽海螺暹罗耐火材料有限公司 Large-scale cement rotary kiln composite magnesium aluminate spinel brick and its production method
CN110922164A (en) * 2019-12-11 2020-03-27 中南大学 Preparation method of forsterite type complex phase heat insulation material
CN111747732A (en) * 2020-05-13 2020-10-09 九江市璀鑫新材料有限公司 High-tightness magnesium composite material and manufacturing method thereof

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