CN110452013A - A method of periclase heat-barrier material is prepared using waste magnesia carbon bricks - Google Patents

A method of periclase heat-barrier material is prepared using waste magnesia carbon bricks Download PDF

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Publication number
CN110452013A
CN110452013A CN201910705166.6A CN201910705166A CN110452013A CN 110452013 A CN110452013 A CN 110452013A CN 201910705166 A CN201910705166 A CN 201910705166A CN 110452013 A CN110452013 A CN 110452013A
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heat
periclase
magnesia carbon
barrier material
carbon bricks
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罗旭东
王宝林
陈娜
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University of Science and Technology Liaoning USTL
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University of Science and Technology Liaoning USTL
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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
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • 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
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/03—Shaped 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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
    • C04B35/04—Shaped 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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
    • C04B35/043—Refractories from grain sized mixtures
    • 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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
    • 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
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/063—Preparing or treating the raw materials individually or as batches
    • C04B38/0635—Compounding ingredients
    • C04B38/0645—Burnable, meltable, sublimable materials
    • 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
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C04B38/063—Preparing or treating the raw materials individually or as batches
    • C04B38/0635—Compounding ingredients
    • C04B38/0645—Burnable, meltable, sublimable materials
    • C04B38/0675—Vegetable refuse; Cellulosic materials, e.g. wood chips, cork, peat, paper

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Processing Of Solid Wastes (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

The invention discloses a kind of methods for preparing periclase heat-barrier material using waste magnesia carbon bricks, using waste magnesia carbon bricks as primary raw material, it is utilized waste magnesia carbon bricks through sorting, fine grinding, mixing, molding, firing with sawdust, stalk or starch and prepares periclase heat-barrier material.Compared with prior art, it is waste magnesia carbon bricks that periclase heat-barrier material prepared by the present invention is raw materials used, turns waste into wealth, improves refractory material utilization rate, economize on resources；And preparation process is simple, porous thermal insulating heat-barrier material structural strength obtained is high, density is small.

Description

A method of periclase heat-barrier material is prepared using waste magnesia carbon bricks
Technical field
The present invention relates to technical field of inorganic chemical industry, and in particular to a kind of to prepare the heat-insulated material of periclase using waste magnesia carbon bricks The method of material.
Background technique
Heat preserving and insulating material refers to that the material or composite body for having significant resistance to hot-fluid, thermal coefficient are general Small 0.174W/ (mK) is answered, apparent density should be less than 1000kg/m3.With the continuous development of heat preserving and insulating material, possess at present Type it is more and more, according to commonly used material quality partitioning, inorganic heat preserving and heat insulation material and organic heat-insulating can be divided into Heat-barrier material two major classes, oneself is not able to satisfy present use needs to past single heat preserving and insulating material, then more environmental protection Type, economical heat preserving and insulating material progress into market, and have received widespread attention and develop and use.Steel and iron industry was made steel Journey generates a large amount of waste magnesia carbon bricks, has magnesia and graphite in waste magnesia carbon bricks, cheap, is calcined using graphite in magnesia carbon brick The heating effect acceleration of sintering of process makes in waste magnesia carbon bricks magnesia form periclase by agglomeration, and periclase is one Kind high-temperature-phase, has the superperformances such as fusing point height.By the way that the organic materials such as sawdust, straw powder, starch are added in material system, Organic matter is calcined by the method for calcining, forms porous structure, as periclase heat-barrier material.Light porous guarantor of the invention Warm heat-barrier material preparation method, raw material are all wastes, and raw material is easy to get, simple process, directly with industrial waste material and agriculture The solid waste such as industry stalk rice husk are primary raw material, and porous insulation material structural strength obtained is high, water absorption rate is low, density It is small, pyroconductivity is low；The production cost of heat preserving and insulating material can be effectively reduced in the present invention, protects environment, turns waste into wealth, have Apparent economic benefit and environmental benefit.
Summary of the invention
The present invention provides a kind of methods for preparing periclase heat-barrier material using waste magnesia carbon bricks, are with waste magnesia carbon bricks Primary raw material is utilized waste magnesia carbon bricks preparation through sorting, fine grinding, mixing, molding, firing with sawdust, stalk or starch Periclase heat-barrier material.
To achieve the above object, the invention is realized by the following technical scheme:
A method of periclase heat-barrier material is prepared using waste magnesia carbon bricks, which is characterized in that with waste magnesia carbon bricks is main Raw material is utilized waste magnesia carbon bricks preparation side magnesium through sorting, fine grinding, mixing, molding, firing with sawdust, stalk or starch Stone heat-barrier material, specific steps are as follows:
Step 1 manually sorts waste magnesia carbon bricks, rejects the metal of dry slag part and adherency；Using jaw crusher into Row is broken, and the 0-5mm partial size magnesia carbon brick particle after screening process is as periclase heat-barrier material raw material；
Step 2, by percentage to the quality, periclase heat-barrier material material composition are as follows: partial size is the magnesia carbon brick particle 60- of 0-5mm 90%, the sawdust, stalk or starch 10-40% that partial size is 0-5mm carry out ingredient, are kneaded 10-20 minutes；Material after mixing is turned Enter and carry out fine grinding in ball mill, obtains the material fine powder that partial size is lower than 0.074mm；
Step 3 is subject to the phenolic resin of material fine powder gross mass 4-8% as bonding agent outside, and the material for being added to step 2 is thin In powder, continue to be kneaded 10-20 minutes, obtain wet mixing material, the compression moulding under 100-300MPa pressure of wet mixing material obtains Periclase heat-barrier material green body；
Periclase heat-barrier material green body is placed in high temperature furnace by step 4, is warming up to 1400-1600 DEG C, keeps the temperature 1-2 hours, with It is taken out after furnace natural cooling and prepares periclase heat-barrier material to get to using waste magnesia carbon bricks.
Heating rate is no more than 5 DEG C/min in the step 4.
Compared with prior art, the beneficial effects of the present invention are: 1) original used in periclase heat-barrier material prepared by the present invention Material is waste magnesia carbon bricks, is turned waste into wealth, and improves refractory material utilization rate, economizes on resources；2) provided by the invention to prepare periclase Heat-barrier material, preparation process are simple.
Specific embodiment
Preparation method of the invention is described further below with reference to embodiment:
Embodiment 1:
A method of periclase heat-barrier material is prepared using waste magnesia carbon bricks, which is characterized in that with waste magnesia carbon bricks is main Raw material is utilized waste magnesia carbon bricks preparation side magnesium through sorting, fine grinding, mixing, molding, firing with sawdust, stalk or starch Stone heat-barrier material, specific steps are as follows:
Step 1 manually sorts waste magnesia carbon bricks, rejects the metal of dry slag part and adherency；Using jaw crusher into Row is broken, and the 0-5mm partial size magnesia carbon brick particle after screening process is as periclase heat-barrier material raw material；
Step 2, periclase heat-barrier material material composition are as follows: magnesia carbon brick particle 70kg that partial size is 0-5mm, partial size are 0-5mm's Sawdust 30kg carries out ingredient, is kneaded 15 minutes；Material after mixing is transferred in ball mill and carries out fine grinding, partial size is obtained and is lower than The material fine powder of 0.074mm；
Step 3 is subject to the phenolic resin of 5kg as bonding agent outside, is added in the material fine powder of step 2, continues mixing 10 Minute, wet mixing material is obtained, by the compression moulding under 100MPa pressure of wet mixing material, obtains periclase heat-barrier material green body；
Periclase heat-barrier material green body is placed in high temperature furnace by step 4, is warming up to 1450 DEG C, keeps the temperature 2 hours, naturally cold with furnace But it takes out afterwards and prepares periclase heat-barrier material to get to using waste magnesia carbon bricks.
The bulk density of periclase heat-barrier material manufactured in the present embodiment is 1.63g/cm3, the porosity 62.3%, high temperature is anti- Folding intensity is 9.6MPa.
Embodiment 2:
A method of periclase heat-barrier material is prepared using waste magnesia carbon bricks, which is characterized in that with waste magnesia carbon bricks is main Raw material is utilized waste magnesia carbon bricks preparation side magnesium through sorting, fine grinding, mixing, molding, firing with sawdust, stalk or starch Stone heat-barrier material, specific steps are as follows:
Step 1 manually sorts waste magnesia carbon bricks, rejects the metal of dry slag part and adherency；Using jaw crusher into Row is broken, and the 0-5mm partial size magnesia carbon brick particle after screening process is as periclase heat-barrier material raw material；
Step 2, periclase heat-barrier material material composition are as follows: magnesia carbon brick particle 80kg that partial size is 0-5mm, partial size are 0-5mm's Sawdust 20kg carries out ingredient, is kneaded 15 minutes；Material after mixing is transferred in ball mill and carries out fine grinding, partial size is obtained and is lower than The material fine powder of 0.074mm；
Step 3 is subject to the phenolic resin of 6kg as bonding agent outside, is added in the material fine powder of step 2, continues mixing 15 Minute, wet mixing material is obtained, by the compression moulding under 200MPa pressure of wet mixing material, obtains periclase heat-barrier material green body；
Periclase heat-barrier material green body is placed in high temperature furnace by step 4, is warming up to 1500 DEG C, keeps the temperature 2 hours, naturally cold with furnace But it takes out afterwards and prepares periclase heat-barrier material to get to using waste magnesia carbon bricks.
The bulk density of periclase heat-barrier material manufactured in the present embodiment is 1.47g/cm3, the porosity 68.1%, high temperature is anti- Folding intensity is 8.7MPa.
Embodiment 3:
A method of periclase heat-barrier material is prepared using waste magnesia carbon bricks, which is characterized in that with waste magnesia carbon bricks is main Raw material is utilized waste magnesia carbon bricks preparation side magnesium through sorting, fine grinding, mixing, molding, firing with sawdust, stalk or starch Stone heat-barrier material, specific steps are as follows:
Step 1 manually sorts waste magnesia carbon bricks, rejects the metal of dry slag part and adherency；Using jaw crusher into Row is broken, and the 0-5mm partial size magnesia carbon brick particle after screening process is as periclase heat-barrier material raw material；
Step 2, periclase heat-barrier material material composition are as follows: magnesia carbon brick particle 90kg that partial size is 0-5mm, partial size are 0-5mm's Sawdust 10kg carries out ingredient, is kneaded 15 minutes；Material after mixing is transferred in ball mill and carries out fine grinding, partial size is obtained and is lower than The material fine powder of 0.074mm；
Step 3 is subject to the phenolic resin of 7kg as bonding agent outside, is added in material fine powder, continues to be kneaded 20 minutes, obtain The compression moulding under 300MPa pressure of wet mixing material is obtained periclase heat-barrier material green body by wet mixing material；
Periclase heat-barrier material green body is placed in high temperature furnace by step 4, is warming up to 1550 DEG C, keeps the temperature 2 hours, naturally cold with furnace But it takes out afterwards and prepares periclase heat-barrier material to get to using waste magnesia carbon bricks.
The bulk density of periclase heat-barrier material manufactured in the present embodiment is 1.16g/cm3, the porosity 71.2%, high temperature is anti- Folding intensity is 7.2MPa.

Claims (2)

1. a kind of method for preparing periclase heat-barrier material using waste magnesia carbon bricks, which is characterized in that based on waste magnesia carbon bricks Raw material is wanted, is utilized waste magnesia carbon bricks preparation side through sorting, fine grinding, mixing, molding, firing with sawdust, stalk or starch Magnesite heat-barrier material, specific steps are as follows:
Step 1 manually sorts waste magnesia carbon bricks, rejects the metal of dry slag part and adherency；Using jaw crusher into Row is broken, and the 0-5mm partial size magnesia carbon brick particle after screening process is as periclase heat-barrier material raw material；
Step 2, by percentage to the quality, periclase heat-barrier material material composition are as follows: partial size is the magnesia carbon brick particle 60- of 0-5mm 90%, the sawdust, stalk or starch 10-40% that partial size is 0-5mm carry out ingredient, are kneaded 10-20 minutes；Material after mixing is turned Enter and carry out fine grinding in ball mill, obtains the material fine powder that partial size is lower than 0.074mm；
Step 3 is subject to the phenolic resin of material fine powder gross mass 4-8% as bonding agent outside, and the material for being added to step 2 is thin In powder, continue to be kneaded 10-20 minutes, obtain wet mixing material, the compression moulding under 100-300MPa pressure of wet mixing material obtains Periclase heat-barrier material green body；
Periclase heat-barrier material green body is placed in high temperature furnace by step 4, is warming up to 1400-1600 DEG C, keeps the temperature 1-2 hours, with It is taken out after furnace natural cooling and prepares periclase heat-barrier material to get to using waste magnesia carbon bricks.
2. a kind of method for preparing periclase heat-barrier material using waste magnesia carbon bricks according to claim 1, feature exist In heating rate is no more than 5 DEG C/min in the step 5.
CN201910705166.6A 2019-08-01 2019-08-01 A method of periclase heat-barrier material is prepared using waste magnesia carbon bricks Pending CN110452013A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115838298A (en) * 2022-11-17 2023-03-24 郑州经纬科技实业有限公司 Special heat insulation plate for aluminum cell roasting and production method thereof

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CN1704384A (en) * 2004-06-02 2005-12-07 武汉科技大学 Periclase-olivine light thermal-insulated fireproof materials and method for preparing same
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CN103274708A (en) * 2013-06-09 2013-09-04 山西太钢不锈钢股份有限公司 Method for preparing refractory material by utilizing wasted magnesia carbon brick
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RU2196755C2 (en) * 1999-12-10 2003-01-20 Иванченкова Людмила Григорьевна Method for manufacture of foam ceramics
CN1704384A (en) * 2004-06-02 2005-12-07 武汉科技大学 Periclase-olivine light thermal-insulated fireproof materials and method for preparing same
CN102408241A (en) * 2010-09-23 2012-04-11 辽宁科技大学 Low-creep periclase-spinelle heat storage material for air heating furnace and production method thereof
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CN103274708A (en) * 2013-06-09 2013-09-04 山西太钢不锈钢股份有限公司 Method for preparing refractory material by utilizing wasted magnesia carbon brick
CN105908255A (en) * 2016-03-24 2016-08-31 西安建筑科技大学 Method for preparing magnesium oxide whisker from waste magnesia-carbon brick

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115838298A (en) * 2022-11-17 2023-03-24 郑州经纬科技实业有限公司 Special heat insulation plate for aluminum cell roasting and production method thereof
CN115838298B (en) * 2022-11-17 2023-10-13 郑州经纬科技实业有限公司 Special heat-insulating plate for roasting aluminum electrolysis cell and production method thereof

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Application publication date: 20191115