CN106007740A - Refractory bricks for gas generator on basis of calcium aluminum oxide - Google Patents
Refractory bricks for gas generator on basis of calcium aluminum oxide Download PDFInfo
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- CN106007740A CN106007740A CN201610307855.8A CN201610307855A CN106007740A CN 106007740 A CN106007740 A CN 106007740A CN 201610307855 A CN201610307855 A CN 201610307855A CN 106007740 A CN106007740 A CN 106007740A
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- andalusite
- gas generator
- calcium aluminate
- aluminum oxide
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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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
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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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
- C04B35/44—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 aluminates
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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
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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
- C04B2235/32—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
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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
- 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
- C04B2235/34—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
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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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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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 relates to the field of gas generators, in particular to refractory bricks for a gas generator on the basis of calcium aluminum oxide. The refractory bricks are prepared from 40% of calcium aluminum oxide, 10% of bauxite, 20% of clay, 15% of wood flour, 5% of tabular corundum, 2% of silica powder, 2% of aluminum oxide micro powder, 1% of kyanite, 1% of andalusite, 2% of an addition agent and 1.5% 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 calcium aluminum oxide and the inherent characteristic of calcium aluminum oxide, the fire resistance and the chemical stability of the refractory bricks are higher compared with traditional refractory bricks.
Description
Technical field
The present invention relates to gas generator field, a kind of gas generator refractory brick based on calcium aluminate.
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..
Calcium aluminate is a series of inorganic compound at high temperature sintered by calcium oxide and aluminium oxide, owing to its hardness is big, molten
The physical property that point is high, is applied in cement and fire extinguishing material.The fusing point of calcium aluminate is about 2000 DEG C, be practically insoluble in water and
Non-polar organic solvent.
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 calcium aluminate, its formula consists of: calcium aluminate 30%-50%, bauxite 10%-25%, clay
15%-25%, wood flour 10%-20%, plate diamond spar 5%-10%, silicon powder 1%-6%, alumina powder 1%-6%, kyanite 1%-5%,
Andalusite 1%-4%, additive 1%-5%, coagulant 0.5%-2%.
Its formula consists of: calcium aluminate 40%, bauxite 10%, clay 20%, wood flour 15%, plate diamond spar 5%, silicon powder 2%,
Alumina powder 2%, kyanite 1%, andalusite 1%, 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 calcium aluminate 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 calcium aluminate of the present invention
With, and the inherent character of calcium aluminate itself so that the fire resistance of refractory brick of the present invention and the more traditional refractory brick of chemical stability are more
By force.
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 calcium aluminate of the present invention, its formula consists of: calcium aluminate 40%, aluminum
Alumina 10%, clay 20%, wood flour 15%, plate diamond spar 5%, silicon powder 2%, alumina powder 2%, kyanite 1%, red post
Stone 1%, 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 calcium aluminate 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 calcium aluminate, it is characterised in that: its formula consists of: calcium aluminate 30%-50%,
Bauxite 10%-25%, clay 15%-25%, wood flour 10%-20%, plate diamond spar 5%-10%, silicon powder 1%-6%, aluminium oxide are micro-
Powder 1%-6%, kyanite 1%-5%, andalusite 1%-4%, additive 1%-5%, coagulant 0.5%-2%.
A kind of gas generator refractory brick based on calcium aluminate the most according to claim 1, it is characterised in that: its formula
Consist of: calcium aluminate 40%, bauxite 10%, clay 20%, wood flour 15%, plate diamond spar 5%, silicon powder 2%, aluminium oxide are micro-
Powder 2%, kyanite 1%, andalusite 1%, additive 2%, coagulant 1.5%.
A kind of gas generator refractory brick based on calcium aluminate 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 calcium aluminate 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 calcium aluminate 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.
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CN201610307855.8A CN106007740A (en) | 2016-05-11 | 2016-05-11 | Refractory bricks for gas generator on basis of calcium aluminum oxide |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110964525A (en) * | 2019-11-20 | 2020-04-07 | 闽南师范大学 | Multicolor hard luminous stone and preparation process thereof |
Citations (3)
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---|---|---|---|---|
CN101121609A (en) * | 2007-07-19 | 2008-02-13 | 张富财 | Baking-free hot-metal bottle lining brick |
CN102452825A (en) * | 2010-10-22 | 2012-05-16 | 王永涛 | Fireproof sound-insulation thermal insulation brick |
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 |
-
2016
- 2016-05-11 CN CN201610307855.8A patent/CN106007740A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101121609A (en) * | 2007-07-19 | 2008-02-13 | 张富财 | Baking-free hot-metal bottle lining brick |
CN102452825A (en) * | 2010-10-22 | 2012-05-16 | 王永涛 | Fireproof sound-insulation thermal insulation brick |
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 |
Non-Patent Citations (1)
Title |
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刘斌等: "《土木工程材料》", 30 June 2009, 武汉理工大学出版社 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110964525A (en) * | 2019-11-20 | 2020-04-07 | 闽南师范大学 | Multicolor hard luminous stone and preparation process thereof |
CN110964525B (en) * | 2019-11-20 | 2022-09-20 | 闽南师范大学 | Multicolor hard luminous stone and preparation process thereof |
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Application publication date: 20161012 |