CN106007691A - Kyanite-based refractory bricks for gas generator - Google Patents

Kyanite-based refractory bricks for gas generator Download PDF

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Publication number
CN106007691A
CN106007691A CN201610307418.6A CN201610307418A CN106007691A CN 106007691 A CN106007691 A CN 106007691A CN 201610307418 A CN201610307418 A CN 201610307418A CN 106007691 A CN106007691 A CN 106007691A
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Prior art keywords
kyanite
powder
andalusite
gas generator
wood flour
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CN201610307418.6A
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Chinese (zh)
Inventor
姚成立
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Zongyang Haili Machinery Manufacturing Co Ltd
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Zongyang Haili Machinery Manufacturing Co Ltd
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Priority to CN201610307418.6A priority Critical patent/CN106007691A/en
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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
    • C04B35/16—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 silicates other than clay
    • C04B35/18—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 silicates other than clay rich in aluminium oxide
    • 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
    • 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
    • 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
    • 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
    • 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
    • C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
    • 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
    • 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
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3241—Chromium oxides, chromates, or oxide-forming salts thereof
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite

Abstract

The invention relates to the field of gas generators, in particular to kyanite-based refractory bricks for a gas generator. The refractory bricks are prepared from 35-45% of kyanite, 15-25% of bauxite, 15-25% of clay, 10-20% of wood flour, 5-10% of tabular corundum, 1-6% of silica powder, 1-6% of aluminum oxide micro powder, 1-4% of andalusite, 0.5-2% of calcium aluminum oxide, 1-5% of an addition agent and 0.5-2% of an accelerating agent. The preparing process comprises the following steps of crushing, material mixing, material aging, sintering, heat preserving, forming and maintaining. The refractory bricks are easy to manufacture, controllable in cost and excellent in high-temperature resistant performance; due to use of a large amount of kyanite and the inherent characteristic of kyanite, the chemical resistance and the thermal shock resistance mechanical strength of the refractory bricks are higher compared with traditional refractory bricks.

Description

A kind of gas generator refractory brick based on kyanite
Technical field
The present invention relates to gas generator field, a kind of gas generator refractory brick based on kyanite.
Background technology
Gas generator is the production that coal is converted into imflammable gas coal gas (being mainly composed of CO, H2, CH4 etc.) Equipment, part gas generator uses refractory brick to pile up and forms.Its operation principle is: sieved by the coal meeting gasifying process index After choosing, firing machine join in gas stove, blast self-produced steam with air gas mixture as gasifying agent from furnace bottom.Coal exists Through physics, chemical reaction in stove, generating imflammable gas, gas in upper segment is through cyclone oil remover, electric trapper filtered tar. hypomere Coal gas, through cyclone dust extractor dust out, is transported to user after mixing and uses.
Refractory brick is called for short firebrick.The refractory material being fired into refractory clay or other refractory raw materials.Faint yellow or band brown.Energy The high temperature of resistance to 1580 DEG C 1770 DEG C.Also firebrick it is.There is the refractory material of definite shape and size.By process of preparing Division can be divided into burnt brick, unburned brick, fused cast refractories (molten-cast brick), refratory insulating brick；Standard type can be divided into by shape and size Brick, common brick, special shaped brick etc..Can be used as building kiln and the high temperature construction material of various Thermal Equipment and structural material, and At high temperature it is amenable to various physicochemical change and mechanism.Such as chamotte brick, high-alumina brick, silica brick, magnesia brick etc..
Kyanite is a kind of novel refractory, belongs to high aluminum mineral, and resist chemical performance is strong, thermal shock mechanical strength is big, is subject to Thermal expansion is irreversible, is to produce unsetting material and High Alumina Bricks for EAF, phosphate unburned brick, mullite brick, the master of low creep brick Want raw material, be also a kind of metamorphic mineral, mainly originate in regional metamorphism crystalline schist, its metamorphic phase by greenschist facies to amphibolite Phase.
Summary of the invention
For the problems of the prior art, present invention is primarily targeted at, promote the fire resistant quality of existing refractory brick, improve resistance to Firebrick service life, so that refractory brick has more the value in industry.
The object of the invention to solve the technical problems realizes by the following technical solutions.The one proposed according to the present invention Gas generator refractory brick based on kyanite, its formula consists of: kyanite 35%-45%, bauxite 15%-25%, clay 15%-25%, wood flour 10%-20%, plate diamond spar 5%-10%, silicon powder 1%-6%, alumina powder 1%-6%, andalusite 1%-4%, Calcium aluminate 0.5%-2%, additive 1%-5%, coagulant 0.5%-2%；
Preferably, its formula consists of: kyanite 40%, bauxite 15%, clay 15%, wood flour 15%, plate diamond spar 5%, Silicon powder 2%, alumina powder 2%, andalusite 1%, calcium aluminate 0.5%, additive 2%, coagulant 1.5%.
Preferably, described additive is Cr2O3, and described coagulant is sodium aluminate.
A kind of gas generator refractory brick based on kyanite of the present invention, its preparation process comprises the following steps:
(1) pulverize: the components in certain proportion in above-mentioned formula is configured, use double-roll crusher above-mentioned formula will to remove andalusite and wood Material outside bits mixes and pulverizes, and then wears into mixed-powder with ball mill and sieves, and mixed-powder fineness is 205 mesh, Wood flour Raymond machine is levigate and sieves, and wood flour fineness is less than 1mm, and andalusite double-roll crusher is individually pulverized and enters ball mill Pulverizing powder also sieves, and andalusite fineness of powder is 86 mesh；
(2) batch mixing: use Secondary mixing, above-mentioned mixed-powder, wood flour and andalusite powder are together placed in blender, Mixing time is 2-3min for the first time, and rotating speed is 80-120r/min, is subsequently adding the water of 10%-12% and is allowed to be mixed into plastic Shape, mixing time is 4-5min for the second time, and rotating speed is 150-210r/min；
(3) ageing mixture: ageing mixture is carried out in ageing mixture storehouse, the ageing mixture time is 10h, and ageing mixture equipment uses reversible moving formula distributing device；
(4) sintering: firing temperature uses 1400-1600 DEG C；
(5) insulation: temperature retention time is 4-6h；
(6) molding: molding uses semi-hard plastic double-stage vacuum extruding machine, and briquetting pressure is 10MPa, a size of 240mm × 115mm × 90mm or 390mm × 190mm × 190mm；
(7) maintenance: at room temperature maintenance 48h.
Preferably, firing temperature uses 1450-1500 DEG C, and optimum temperature is 1500 DEG C.
By technique scheme, the refractory brick of the present invention at least has the advantage that
The refractory brick of the present invention is simple to manufacture, and cost is controlled, and resistance to elevated temperatures is excellent, and making in a large number due to kyanite of the present invention By, and the inherent character of kyanite itself so that the resist chemical performance of refractory brick of the present invention and anti-thermal shock mechanical strength The more traditional refractory brick of ability is higher.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, below in conjunction with tool Body embodiment, is expanded on further the present invention.
Embodiment 1
A kind of gas generator refractory brick based on kyanite of the present invention, its formula consists of: kyanite 40%, aluminum Alumina 15%, clay 15%, wood flour 15%, plate diamond spar 5%, silicon powder 2%, alumina powder 2%, andalusite 1%, aluminic acid Calcium 0.5%, additive 2%, coagulant 1.5%.
Preferably, described additive is Cr2O3, and described coagulant is sodium aluminate.
A kind of gas generator refractory brick based on kyanite of the present invention, its preparation process comprises the following steps:
(1) pulverize: the components in certain proportion in above-mentioned formula is configured, use double-roll crusher above-mentioned formula will to remove andalusite and wood Material outside bits mixes and pulverizes, and then wears into mixed-powder with ball mill and sieves, and mixed-powder fineness is 205 mesh, Wood flour Raymond machine is levigate and sieves, and wood flour fineness is less than 1mm, and andalusite double-roll crusher is individually pulverized and enters ball mill Pulverizing powder also sieves, and andalusite fineness of powder is 86 mesh；
(2) batch mixing: use Secondary mixing, above-mentioned mixed-powder, wood flour and andalusite powder are together placed in blender, Mixing time is 2-3min for the first time, and rotating speed is 80-120r/min, is subsequently adding the water of 10%-12% and is allowed to be mixed into plastic Shape, mixing time is 4-5min for the second time, and rotating speed is 150-210r/min；
(3) ageing mixture: ageing mixture is carried out in ageing mixture storehouse, the ageing mixture time is 10h, and ageing mixture equipment uses reversible moving formula distributing device；
(4) sintering: firing temperature uses 1400-1600 DEG C；
(5) insulation: temperature retention time is 4-6h；
(6) molding: molding uses semi-hard plastic double-stage vacuum extruding machine, and briquetting pressure is 10MPa, a size of 240mm × 115mm × 90mm or 390mm × 190mm × 190mm；
(7) maintenance: at room temperature maintenance 48h.
Preferably, firing temperature uses 1450-1500 DEG C, and optimum temperature is 1500 DEG C.
The ultimate principle of the present invention, principal character and advantage have more than been shown and described.Skilled person will appreciate that of the industry, The present invention is not restricted to the described embodiments, the principle that the present invention is simply described of the description in above-mentioned embodiment and description, Without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, and these changes and improvements all fall Enter in the scope of protection of present invention.Claimed scope is defined by appending claims and equivalent thereof.

Claims (5)

1. a gas generator refractory brick based on kyanite, it is characterised in that: its formula consists of: kyanite 35%-45%, Bauxite 15%-25%, clay 15%-25%, wood flour 10%-20%, plate diamond spar 5%-10%, silicon powder 1%-6%, aluminium oxide are micro- Powder 1%-6%, andalusite 1%-4%, calcium aluminate 0.5%-2%, additive 1%-5%, coagulant 0.5%-2%.
A kind of gas generator refractory brick based on kyanite the most according to claim 1, it is characterised in that: its formula Consist of: kyanite 40%, bauxite 15%, clay 15%, wood flour 15%, plate diamond spar 5%, silicon powder 2%, aluminium oxide are micro- Powder 2%, andalusite 1%, calcium aluminate 0.5%, additive 2%, coagulant 1.5%.
A kind of gas generator refractory brick based on kyanite the most according to claim 1, it is characterised in that: described Additive is Cr2O3, and described coagulant is sodium aluminate.
A kind of gas generator refractory brick based on kyanite the most according to claim 1 and 2, it is characterised in that: system Standby process comprises the following steps:
(1) pulverize: the components in certain proportion in above-mentioned formula is configured, use double-roll crusher above-mentioned formula will to remove andalusite and wood Material outside bits mixes and pulverizes, and then wears into mixed-powder with ball mill and sieves, and mixed-powder fineness is 205 mesh, Wood flour Raymond machine is levigate and sieves, and wood flour fineness is less than 1mm, and andalusite double-roll crusher is individually pulverized and enters ball mill Pulverizing powder also sieves, and andalusite fineness of powder is 86 mesh；
(2) batch mixing: use Secondary mixing, above-mentioned mixed-powder, wood flour and andalusite powder are together placed in blender, Mixing time is 2-3min for the first time, and rotating speed is 80-120r/min, is subsequently adding the water of 10%-12% and is allowed to be mixed into plastic Shape, mixing time is 4-5min for the second time, and rotating speed is 150-210r/min；
(3) ageing mixture: ageing mixture is carried out in ageing mixture storehouse, the ageing mixture time is 10h, and ageing mixture equipment uses reversible moving formula distributing device；
(4) sintering: firing temperature uses 1400-1600 DEG C；
(5) insulation: temperature retention time is 4-6h；
(6) molding: molding uses semi-hard plastic double-stage vacuum extruding machine, and briquetting pressure is 10MPa, a size of 240mm × 115mm × 90mm or 390mm × 190mm × 190mm；
(7) maintenance: at room temperature maintenance 48h.
A kind of gas generator refractory brick based on kyanite the most according to claim 4, it is characterised in that: burn till temperature Degree uses 1450-1500 DEG C, and optimum temperature is 1500 DEG C.
CN201610307418.6A 2016-05-11 2016-05-11 Kyanite-based refractory bricks for gas generator Pending CN106007691A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110041084A (en) * 2018-05-21 2019-07-23 济源市涟源炉业有限公司 A kind of mullite insulating fire brick and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101343189A (en) * 2008-08-26 2009-01-14 巩义市五耐科技开发有限公司 High-purity apyre brick and manufacture method thereof
CN104446568A (en) * 2014-12-15 2015-03-25 山东鲁阳股份有限公司 Fireproof insulating brick and preparation method thereof
CN105367096A (en) * 2015-11-25 2016-03-02 南京联合荣大工程材料有限责任公司 Refractory raw material and blast furnace press-in material containing same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101343189A (en) * 2008-08-26 2009-01-14 巩义市五耐科技开发有限公司 High-purity apyre brick and manufacture method thereof
CN104446568A (en) * 2014-12-15 2015-03-25 山东鲁阳股份有限公司 Fireproof insulating brick and preparation method thereof
CN105367096A (en) * 2015-11-25 2016-03-02 南京联合荣大工程材料有限责任公司 Refractory raw material and blast furnace press-in material containing same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110041084A (en) * 2018-05-21 2019-07-23 济源市涟源炉业有限公司 A kind of mullite insulating fire brick and preparation method thereof

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Application publication date: 20161012