CN106083135A

CN106083135A - A kind of metallic large size ceramic heat storage and preparation technology thereof

Info

Publication number: CN106083135A
Application number: CN201610425796.4A
Authority: CN
Inventors: 吴道君; 周守洪; 李军营; 姜朝兴; 杨晓波
Original assignee: Hubei Shenwu Thermal Energy Technology Co Ltd; Beijing Shenwu Power Technology Co Ltd
Current assignee: Beijing Shenwu Environmental and Energy Technology Co Ltd; Hubei Shenwu Thermal Energy Technology Co Ltd; Beijing Shenwu Power Technology Co Ltd
Priority date: 2015-06-27
Filing date: 2016-06-16
Publication date: 2016-11-09
Also published as: CN104987077A; CN106431383A; CN106083136A; CN106083140A; CN106083134A; CN106083139A; CN106083137A; CN106083141A; CN106083138A; CN106083142A

Abstract

A kind of metallic large size ceramic heat storage, it is characterized in that described heat storage is column structure, the duct of multiple through cylinder it is provided with inside heat storage, described heat storage is sintered by inorganic powder and additive and forms, and wherein inorganic powder is made up of the component of following weight proportion: aluminium oxide 30 40 parts, zirconium oxide 26 35 parts, silicon dioxide 26 35 parts, beryllium oxide 10 15 parts, carborundum 10 13 parts, titanium carbide 35 parts, nano level metal ferrum 35 parts, 35 parts of nano level metal tungsten, molybdenum 26 parts, cerium oxide 0.2 0.5 parts.The present invention has good processability and conformal performance.Using inventive formulation and production method, heat storage duct is intensive, and wall thickness is thin, and wall thickness is only 1mm, and sectional dimension is big, and sectional dimension is more than 100cm², draw ratio is high, and length reaches 1000mm, the features such as it is little that all ducts have resistance, and dust stratification is few, is not easily blocked, and dust discharge is functional.

Description

A kind of metallic large size ceramic heat storage and preparation technology thereof

Technical field

The invention belongs to industrial energy saving, emission abatement device field, particularly relate to a kind of metallic large size ceramic heat storage and Its preparation technology.

Background technology

Regenerative combustion technology has obtained extensively application on industrial furnace, and one of its technological core is high-temperature heat accumulation honeycomb Body.Heat accumulating type ceramic honey comb, due to good storage exothermicity, high-temperature behavior and thermal shock resistance, instead of traditional accumulation of heat Formula bead, checker brick.During use, make high-temperature flue gas and cryogenic gas (such as air gas) the most in turn by commutation By heat storage, make heat storage constantly absorb heat heat release, medium as heat exchange, reach the mesh of flue gas and air gas heat exchange 's.Detailed process is: when high-temperature flue gas is by heat storage, heat storage is heated to high temperature, and flue-gas temperature is through being greatly reduced heel row Putting, now accumulation of heat is in heat storage；After commutation, Cryogenic air or coal gas flow through heat storage from opposite direction, heated paramount Temperature, heat storage heat release is also lowered the temperature；Again after commutation, flue gas passes through heat storage, is heated by heat storage.So move in circles, it is achieved The discharged at lower temperature of flue gas and heat energy recycle.

The heat exchange area of ceramic honey comb has direct relation with ceramic honey comb aperture and wall thickness.Ceramic honey comb product aperture is more Little, wall thickness is the thinnest, surface area is the biggest, and heat exchange area is the biggest, and heat exchange efficiency is the highest.But in application process, there is a lot of reasons Making heat storage to use, trace it to its cause, the most existing ceramic honey comb formula and processing technology are unreasonable, after causing burning till Honeycomb ceramics anti-wear performance, decay resistance are the highest, size is little, length is short, aperture compared with big, wall thickness, global shape are irregular, mechanical Intensity is the highest, the life-span is short.

When honeycomb ceramic body size is little, length in short-term, regenerator is assembled, between honeycomb ceramics by multiple little honeycomb ceramics There is certain interval.Thus cause that the airflow hole between any two honeycomb ceramics is off and there is serious inconsistent phenomenon. Dust in flue gas and the particulate matter staggered site deposition between honeycomb ceramics, last blocking airflow through hole.And existing honeycomb Ceramic body is undesirable because of material, causes heat exchange efficiency to be also affected.

Summary of the invention

The present invention provides a kind of metallic large size ceramic heat storage and preparation technology thereof, in order to solve existing ceramic honey comb Anti-wear performance, decay resistance are the highest, and shape is irregular, size is little, length is short, aperture is relatively big, wall thickness, easily blocks up during use Plug flue, thermal waste are big, heat changes the technical problems such as efficiency is low, mechanical strength is the highest, the life-span is short.

In order to solve above technical problem, the technical solution used in the present invention is: a kind of metallic large size ceramic stores Hot body, is characterized in that described heat storage is column structure, is provided with the duct of multiple through cylinder, described heat storage inside heat storage Being sintered by inorganic powder and additive and form, wherein inorganic powder includes that the component of following weight proportion forms: aluminium oxide 30-40 Part, zirconium oxide 26-35 part, silicon dioxide 26-35 part, beryllium oxide 10-15 part, carborundum 10-13 part, titanium carbide 3-5 part, nanometer Level metallic iron 3-5 part, nano level metal tungsten 3-5 part, molybdenum 2-6 part.

As preferably, described inorganic powder also has the component of following weight proportion: cerium oxide 0.2-0.5 part.

As preferably, the cross sectional shape of described heat storage is polygon, semicircle, circle, arch, fan-shaped one, institute The cross sectional shape stating duct is polygon, semicircle, circle, arch, one or more fan-shaped combinations, described heat storage cross section Circumscribed circle diameter >=150mm, cylinder length and cross section circumscribed circle diameter ratio >=3.

The preparation technology of a kind of metallic large size ceramic heat storage, its preparation technology is: (1) is dry mixed: first by inorganic Powder adds in ball mill, is dry mixed 6～8 hours, crosses the screen cloth of 80 mesh；(2) doping, described additive component includes organic Binding agent, plasticizer and wetting agent, by 100 parts of listed as parts by weight of inorganic powder, wherein organic binder bond is 2.0～5.0 weight Part, plasticizer is 0.5～3.0 weight portions, and wetting agent is 0.5～3.0 weight portions；(3) mediate, add while stirring in kneader Enter water and lubricant；(4) just practice: carry out pug on vacuum deairing machine just practicing, pug mill vacuum when just practicing >=- 0.05MPa, practices into closely knit pug block, detects the moisture content of pug block, index of plasticity；(5) old: pug block is placed in ring Border be carry out in the ageing silo of 3 DEG C old, old time 5h, then enter in pug block is placed in the ageing silo that environment is 8～25 DEG C Row is old, old time >=24h；(6) refine filtering: after vacuum extruding machine refine, relative vacuum degree be- 0.09MPa is carried out, then filters through filter；(7) horizontal vacuum extruder for shaping is used；(8) it is dried: initially with steaming Vapour is fumigated 2 hours, can produce by pre-Anti-cracking, is then placed in microwave oven, microwave drying 15 minutes, is re-fed into air stove and uses heat Air-dry dry 1 hour；(9) cutting, sintering: cut blank, then burns till, maximum sintering temperature in nitridation room 1600 DEG C, after firing time 96h, prepare finished product.

As preferably, the described process that carries out burning till in nitridation room is: be raised to 1400 DEG C from room temperature, programming rate 50 DEG C/min, it is incubated 2～2.5 hours at 1400 DEG C；Then it is raised to 1550～1600 DEG C from 1400 DEG C: programming rate 25 DEG C/minute Clock, is incubated 2.5-3 hour at 1550～1600 DEG C.

As preferably, described organic binder bond is methylcellulose, hydroxyethyl cellulose, cyanethyl cellulose, hydroxypropyl In cellulose, carboxymethyl cellulose, ethyl cellulose, polyvinyl alcohol, butyl silicate, vinyl acetate resin, modified starch one Plant or multiple combination.

As preferably, described organic plasticizers is the compositions of polyethylene glycol oxide, polyvinyl alcohol.

As preferably, described wetting agent be Polyethylene Glycol, glycerol, butanediol, propylene glycol, hexylene glycol, xylitol, poly-the third two One or more combinations in alcohol, Sorbitol.

As preferably, described lubricant is one or more combinations of vegetable oil, mineral oil, vaseline.

As preferably, during described step (4) is just practiced, the moisture content of described pug block, index of plasticity be: moisture content 28～ 32%, extrusion force plasticity 1700～2200N.

As preferably, described heat storage upper surface is provided with at least one detent, described heat storage lower surface be provided with The positioning convex strip that detent coordinates.

As preferably, described heat storage sidepiece is additionally provided with axial notch.

Organic binder bond, polyethylene glycol oxide, polyvinyl alcohol, the addition of wetting agent, and the old process of secondary, can allow pottery Ceramic powder forms mixing pug network the finest and close, uniform.

In dry run, first steam is fumigated 2 hours, can produce by pre-Anti-cracking, is then placed in microwave oven, microwave drying Air stove can be re-fed into and uses hot air drying 1 hour with overall reduction pug moisture content, it is thus achieved that most suitable moisture content.This Sample both can prevent wet base from not ftractureing in dry run as far as possible, plays a part again to reduce mud material forming pressure in molding.

The positioning convex strip of honeycomb ceramics coordinates with detent, is possible to prevent airflow hole between two honeycomb ceramics upper and lower end faces wrong Position phenomenon occurs.The axial notch set up adds somewhat to the heat storage porosity, improves heat storage heat exchanger effectiveness.

The present invention has good processability and conformal performance.Using inventive formulation and production method, heat storage resists Thermal shock and compressive property highlight, and duct is intensive, and wall thickness is thin, and wall thickness is only 1mm, and sectional dimension is big, and sectional dimension is more than 100cm2, draw ratio is high, and length is up to more than 1000mm, and it is little that all ducts have resistance, and dust stratification is few, is not easily blocked, dust-exhausting property Can well wait feature.Airflow hole inconsistent phenomenon two honeycomb ceramics between can be greatly decreased, leading to along airflow direction after installation Road is the most unimpeded.And heat storage stores exothermicity, anti-wear performance, corrosion resistance and good, heat exchange efficiency is high, thus is to save money Source, the novel product of environmental protection.

Accompanying drawing explanation

Shown in Fig. 1 be cross section of the present invention be foursquare structural representation；

Shown in Fig. 2 be cross section of the present invention be rectangle, cross section, duct be hexagonal structural representation；

Shown in Fig. 3 be cross section of the present invention be the structural representation of arch；

Shown in Fig. 4 be cross section of the present invention be trapezoidal structural representation；

Shown in Fig. 5 be cross section of the present invention be rectangle, cross section, duct be foursquare structural representation；

Shown in Fig. 6 be cross section of the present invention be circular structural representation；

It it is structural representation during perpendicular positioning of the present invention shown in Fig. 7；

It it is structural representation during horizontal location of the present invention shown in Fig. 8.

Detailed description of the invention

Below in conjunction with detailed description of the invention, technical scheme is described in further detail.

As shown in Fig. 1,2,3,4,5,6, the cross sectional shape of this metallic large size ceramic heat storage is square, rectangle Etc. polygonal one, or the one of the shape such as semicircle, circle, arch, sector, heat storage sectional dimension >=150mm, Draw ratio >=3(i.e. cylinder length L and cross section circumscribed circle diameter d ratio >=3), it is provided with size inside heat storage uniformly and in parallel Or staggered duct 1, the shape in cross section, duct 1 selects according to the actual requirements: can be square, triangle, pentagon, six Limit shapes etc. are polygonal a kind of or semicircle, circular, the combination of one or more various shapes of arch, sector.

As it is shown in fig. 7, heat storage upper surface is provided with at least one detent 2, described heat storage lower surface is provided with fixed The positioning convex strip 3 that position groove 2 coordinates.Positioning convex strip 3 coordinates with detent 2, can allow upper and lower two pieces of heat storage accurate positionings, Prevent airflow hole inconsistent phenomenon between two honeycomb ceramics upper and lower end faces from occurring.

Additionally, as shown in Figure 8, also can arrange axial notch 4 at heat storage sidepiece, allow between two honeycomb ceramics is the most recessed Forming exhaust gases passes after groove 4 docking, this adds somewhat to the heat storage porosity, improves heat storage heat exchanger effectiveness.

Embodiment one:

The large size ceramic heat storage made, cross section is square；Its preparation technology is: (1) is dry mixed, and is first added by inorganic powder Entering in ball mill, be dry mixed 4 hours, cross the screen cloth of 100 mesh, inorganic powder is made up of the component of following weight proportion: aluminium oxide 32 Part, zirconium oxide 28 parts, silicon dioxide 27 parts, beryllium oxide 11 parts, carborundum 12 parts, titanium carbide 3 parts, nano level metal ferrum 4 parts, receive Meter level tungsten 3 parts, molybdenum 3 parts；(2) doping, additive component is methylcellulose 3 weight portion, cyanethyl cellulose 2 weight Amount part, polyvinyl alcohol 2 weight portion, polyethylene glycol oxide 1 weight portion, xylitol 2 weight portion；(3) mediate, limit stirring in kneader Limit adds water and lubricating oil, during kneading, after adding 400kg material, divides 5 times while stirring and adds water, and water continues stirring 5 points after adding Clock also disposably adds Oleum Verniciae fordii, stops stirring after 20 minutes；(4) just practice, carry out pug just practicing on vacuum deairing machine, just practice Time pug mill vacuum be-0.09MPa, practice into closely knit pug block, pug block moisture content is 28～32%, and extrusion force plasticity is 1700～2200N；(5) old, carry out old in pug block is placed in the ageing silo that environment is 3 DEG C, old time 5h, then by mud Material block carries out old in being placed in the ageing silo that environment is 8 DEG C, old time 26h；(6) refine, filters, then through vacuum extruding machine essence After refining, it is in-0.09MPa at relative vacuum degree and carries out, then filter through filter；(7) extrusion molding, squeezes at horizontal extruder Become the wet base of 800mm length；(8) fumigate 2 hours initially with steam, be then placed in microwave oven, microwave drying 15 minutes, be re-fed into Air stove uses hot air drying 1 hour；(9) cutting, sintering: blank is cut, then burn till in nitridation room, first First it is raised to 1400 DEG C from room temperature, programming rate 50 DEG C/min, it is incubated 2～2.5 hours at 1400 DEG C；Then it is raised to from 1400 DEG C 1550～1600 DEG C: programming rate 25 DEG C/min, it is incubated 2.5-3 hour at 1550～1600 DEG C, prepares after firing time 96h Finished product.

Performance indications: the size of finished product is 150mm × 150mm × 730mm.Resistant to sulfur acid attack rate 0.27wt%(GB/ T17601-2008)；Specific heat capacity 860J/Kg；Water absorption rate 0.3%；Heat shock resistance temperature 520 DEG C；Compressive resistance (axially): 75MPa； Wearability 0.49 cm³.Finished product sectional dimension is big, and draw ratio is high, installs tailing edge airflow direction channels open, and resistance is little, dust stratification Few.Actually used show: because this honeycomb ceramic heat accumulator size is big, shape is regular, the duct 1 after installation, between honeycomb ceramics Para-position is accurate, as long as along generally 12 pieces honeycomb ceramic heat accumulators series connection of airflow direction it is ensured that airway patency, allows whole storage Storage exothermicity, high-temperature behavior and the thermal shock resistance of thermal are not fully exerted.

Embodiment two:

The large size ceramic heat storage made, cross section is square；Its preparation technology is: (1) is dry mixed, and is first added by inorganic powder Entering in ball mill, be dry mixed 6 hours, cross the screen cloth of 80 mesh, inorganic powder is made up of the component of following weight proportion: aluminium oxide 33 Part, zirconium oxide 29 parts, silicon dioxide 28 parts, beryllium oxide 13 parts, carborundum 12 parts, titanium carbide 4 parts, nano level metal ferrum 4 parts, receive Meter level tungsten 3 parts, molybdenum 3 parts；(2) doping, additive component is hydroxyethyl cellulose 4 weight portion, polyvinyl alcohol 1 weight Part, polyethylene glycol oxide 1 weight portion, polypropylene glycol 3 weight portion；(3) mediate, kneader adds water and lubrication while stirring Oil, during kneading, after adding 400kg material, divides 3 times while stirring and adds water, and water continues stirring after adding and adds paulownia at twice in 2 minutes Oil, stops stirring after 30 minutes；(4) just practice, carry out pug just practicing on vacuum deairing machine, pug mill vacuum when just practicing For-0.08MPa, practicing into closely knit pug block, pug block moisture content is 28～32%, and extrusion force plasticity is 1700～2200N；(5) Old pug block is placed in the ageing silo that environment is 3 DEG C in carry out old, old time 5h, then pug block is placed in environment is 12 DEG C ageing silo in carry out old, old time 24h；(6) refine, filters, then after vacuum extruding machine refine, in relative vacuum Degree is in-0.08MPa and carries out；(7) extrusion molding, is extruded into the wet base of 1050mm length at horizontal extruder；(8) initially with steaming Vapour is fumigated 2 hours, is then placed in microwave oven, microwave drying 15 minutes, is re-fed into air stove and uses hot air drying 1 hour；(9) cut Cut, sintering: blank is cut, then burn till in nitridation room, be first raised to 1400 DEG C from room temperature, programming rate 50 DEG C/min, it is incubated 2～2.5 hours at 1400 DEG C；Then it is raised to 1550～1600 DEG C from 1400 DEG C: programming rate 25 DEG C/minute Clock, is incubated 2.5-3 hour at 1550～1600 DEG C, prepares finished product after firing time 96h.

Performance indications: the size of finished product is 150mm × 150mm × 1000mm.Resistant to sulfur acid attack rate 0.28wt%(GB/ T17601-2008)；Specific heat capacity 862J/Kg；Water absorption rate 0.3%；Heat shock resistance temperature 520 DEG C；Compressive resistance (axially): 76MPa； Wearability 0.47 cm³.Finished product sectional dimension is big, and draw ratio is high, installs tailing edge airflow direction channels open, and resistance is little, dust stratification Few.Actually used show: because this honeycomb ceramic heat accumulator size is big, shape is regular, the duct 1 after installation, between honeycomb ceramics Para-position is accurate, as long as along generally 12 pieces honeycomb ceramic heat accumulators series connection of airflow direction it is ensured that airway patency, allows whole storage Storage exothermicity, high-temperature behavior and the thermal shock resistance of thermal are not fully exerted.

Embodiment three:

The large size ceramic heat storage made, cross section is rectangle；Its preparation technology is: (1) is dry mixed, and is first added by inorganic powder Entering in ball mill, add in ball mill by required powder, be dry mixed 3 hours, cross the screen cloth of 80 mesh, inorganic powder is joined by following weight The component composition of ratio: aluminium oxide 35 parts, zirconium oxide 30 parts, silicon dioxide 30 parts, beryllium oxide 13 parts, carborundum 12 parts, titanium carbide 5 Part, nano level metal ferrum 4 parts, 5 parts of nano level metal tungsten, molybdenum 4 parts；(2) doping, additive component is methylcellulose 3 Weight portion, hydroxyethyl cellulose 1 weight portion, polyvinyl alcohol 2 weight portion, polyethylene glycol oxide 1 weight portion, (PEG400) 3 weight Amount part；(3) mediate, kneader adds water and lubricating oil while stirring, during kneading, after adding 400kg material, stir 15min After be initially charged the water of half, add the Oleum Brassicae campestris of half after continuing stirring 5 minutes, after spending 5 minutes, add remaining water and Semen Allii Tuberosi Oil, stopped stirring after 20 minutes；(4) just practice, carry out pug just practicing on vacuum deairing machine, pug mill vacuum when just practicing Degree is-0.08MPa, practices into closely knit pug block, and pug block moisture content is 28～32%, and extrusion force plasticity is 1700～2200N； (5) old, carry out old in pug block is placed in the ageing silo that environment is 3 DEG C, old time 5h, then pug block is placed in environment Be carry out in the ageing silo of 20 DEG C old, old time 26h；(6) refine, filters, then after vacuum extruding machine refine, relatively Vacuum is in-0.09MPa and carries out, then filters through filter；(7) extrusion molding, is extruded into 880mm length at horizontal extruder Wet base；(8) fumigate 2 hours initially with steam, be then placed in microwave oven, microwave drying 15 minutes, be re-fed into air stove and use Hot air drying 1 hour；(9) cutting, sintering: cut blank, then burns till, first from room temperature liter in nitridation room To 1400 DEG C, programming rate 50 DEG C/min, it is incubated 2～2.5 hours at 1400 DEG C；Then it is raised to 1550～1600 from 1400 DEG C DEG C: programming rate 25 DEG C/min, it is incubated 2.5-3 hour at 1550～1600 DEG C, after firing time 96h, prepares finished product.

Performance indications: the size of finished product is 150mm × 180mm × 800mm.Resistant to sulfur acid attack rate 0.29wt%(GB/ T17601-2008)；Specific heat capacity 868J/Kg；Water absorption rate 0.3%；Heat shock resistance temperature 520 DEG C；Compressive resistance (axially): 75 MPa；Wearability 0.47cm³.Finished product sectional dimension is big, and draw ratio is high, installs tailing edge airflow direction channels open, and resistance is little, long-pending Ash is few.Actually used show: because this honeycomb ceramic heat accumulator size is big, shape is regular, the duct after installation, between honeycomb ceramics 1 para-position is accurate, as long as along generally 12 pieces honeycomb ceramic heat accumulators series connection of airflow direction it is ensured that airway patency, allows whole storage Storage exothermicity, high-temperature behavior and the thermal shock resistance of thermal are not fully exerted.

Embodiment four:

The large size ceramic heat storage made, cross section is square, and its preparation technology is: (1) is dry mixed, and is first added by inorganic powder Entering in ball mill, add in ball mill by required powder, be dry mixed 6 hours, cross the screen cloth of 120 mesh, inorganic powder is by following weight The component composition of proportioning: aluminium oxide 40 parts, zirconium oxide 35 parts, silicon dioxide 35 parts, beryllium oxide 15 parts, carborundum 13 parts, carbonization Titanium 4 parts, nano level metal ferrum 5 parts, 5 parts of nano level metal tungsten, molybdenum 6 parts, cerium oxide 0.4 part；(2) doping, additive becomes It is divided into methylcellulose 3 weight portion, hydroxyethyl cellulose 1 weight portion, cyanethyl cellulose 2 weight portion, polyvinyl alcohol 2 weight Part, polyethylene glycol oxide 1 weight portion, (PEG400) 3 weight portion；(3) mediate, add while stirring in kneader water and Lubricating oil, during kneading, after adding 400kg material, disposably adds water after stirring 20min, adds all of after continuing stirring 5 minutes Oleum Brassicae campestris, stopped stirring after mediating 30 minutes；(4) just practice, carry out pug just practicing on vacuum deairing machine, pugging when just practicing Machine vacuum is-0.08MPa, practices into closely knit pug block, and pug block moisture content is 28～32%, extrusion force plasticity be 1700～ 2200N；(5) old, carry out old in pug block is placed in the ageing silo that environment is 3 DEG C, old time 5h, then pug block is put Carry out old in the ageing silo that environment is 25 DEG C, old time 29h；(6) refine, filters, then after vacuum extruding machine refine, It is in-0.06MPa at relative vacuum degree and carries out, then filter through filter；(7) extrusion molding, is extruded at horizontal extruder The wet base of 1050mm length；(8) fumigate 2 hours initially with steam, be then placed in microwave oven, microwave drying 15 minutes, be re-fed into Air stove uses hot air drying 1 hour；(9) cutting, sintering: blank is cut, then burn till in nitridation room, first First it is raised to 1400 DEG C from room temperature, programming rate 50 DEG C/min, it is incubated 2～2.5 hours at 1400 DEG C；Then it is raised to from 1400 DEG C 1550～1600 DEG C: programming rate 25 DEG C/min, it is incubated 2.5-3 hour at 1550～1600 DEG C, prepares after firing time 96h Finished product.

Performance indications: the size of finished product is 150mm × 150mm × 1000mm.Resistant to sulfur acid attack rate 0.23wt%(GB/ T17601-2008)；Specific heat capacity 865J/Kg；Water absorption rate 0.2%；Heat shock resistance temperature 560 DEG C；Compressive resistance (axially): 79MPa； Wearability 0.41 cm³.Finished product sectional dimension is big, and draw ratio is high, installs tailing edge airflow direction channels open, and resistance is little, dust stratification Few.Actually used show: because this honeycomb ceramic heat accumulator size is big, shape is regular, the duct 1 after installation, between honeycomb ceramics Para-position is accurate, as long as along generally 12 pieces honeycomb ceramic heat accumulators series connection of airflow direction it is ensured that airway patency, allows whole storage Storage exothermicity, high-temperature behavior and the thermal shock resistance of thermal are not fully exerted.

Comparative example 1: the production method of novel heat-storing material comprises the following steps:

1) white fused alumina 35 parts, alpha-aluminium oxide 20 parts, Kaolin 10 parts, silica flour 10 parts, 5 parts of Talcum, potassium feldspar 10 parts, carbon are weighed Acid barium powder body 10 parts is poured in powder body batch mixing homogenizer；

2) 4 parts of water are weighed；

3) 1.2 parts of Oleum Verniciae fordii are weighed；

4) open powder body batch mixing homogenizer, above-mentioned material is mediated in powder body batch mixing homogenizer, then material is delivered to Vacuum deairing machine is carried out just practice, old, refine, after extrusion forming, send into microwave dryer sizing, be dried, fire and prepare into Product.

Ceramic honey comb embodiment 1-4 obtained and existing product carry out contrast test, and experimental result is as shown in the table:

Finally it is pointed out that above detailed description of the invention is only the more representational example of the present invention.Obviously, the present invention does not limits In above-mentioned detailed description of the invention, it is also possible to there are many deformation.Every technical spirit according to the present invention is to above specific embodiment party Any simple modification, equivalent variations and the modification that formula is made, is all considered as belonging to protection scope of the present invention.

Claims

1. a metallic large size ceramic heat storage, is characterized in that described heat storage is column structure, is provided with inside heat storage The duct of multiple through cylinders, described heat storage is sintered by inorganic powder and additive and forms, and wherein inorganic powder includes following Weight proportion component composition: aluminium oxide 30-40 part, zirconium oxide 26-35 part, silicon dioxide 26-35 part, beryllium oxide 10-15 part, Carborundum 10-13 part, titanium carbide 3-5 part, nano level metal ferrum 3-5 part, nano level metal tungsten 3-5 part, molybdenum 2-6 part.

Metallic large size ceramic heat storage the most according to claim 1, it is characterized in that described inorganic powder also have below The component of weight proportion: cerium oxide 0.2-0.5 part.

Metallic large size ceramic heat storage the most according to claim 1 and 2, is characterized in that the cross section shape of described heat storage Shape is polygon, semicircle, circle, arch, fan-shaped one, and the cross sectional shape in described duct is polygon, semicircle, circle Shape, arch, one or more fan-shaped combinations, described heat storage cross section circumscribed circle diameter >=150mm, outside cylinder length is with cross section Connect circular diameter ratio >=3.

4. produce a preparation technology for metallic large size ceramic heat storage described in claim 3, it is characterized in that described preparation Technique is: (1) is dry mixed: first add in ball mill by inorganic powder, is dry mixed 6～8 hours, crosses the screen cloth of 80 mesh；(2) interpolation is added Agent, described additive component includes organic binder bond, plasticizer and wetting agent, by 100 parts of listed as parts by weight of inorganic powder, wherein Organic binder bond is 2.0～5.0 weight portions, and plasticizer is 0.5～3.0 weight portions, and wetting agent is 0.5～3.0 weight portions；(3) Mediate, kneader adds water and lubricant while stirring；(4) just practice: carry out pug on vacuum deairing machine just practicing, just Pug mill vacuum >=-0.05MPa when practicing, practices into closely knit pug block, detects the moisture content of pug block, index of plasticity；(5) Old: to carry out old in pug block is placed in the ageing silo that environment is 3 DEG C, old time 5h, then pug block is placed in environment is 8 ～carry out old in the ageing silo of 25 DEG C, old time >=24h；(6) refine filtering: after vacuum extruding machine refine, in phase Vacuum is in-0.09MPa and carries out, then filter through filter；(7) horizontal vacuum extruder for shaping is used；(8) dry Dry: to fumigate 2 hours initially with steam, can produce by pre-Anti-cracking, be then placed in microwave oven, microwave drying 15 minutes, then send Enter air stove and use hot air drying 1 hour；(9) cutting, sintering: blank is cut, then burn till in nitridation room, Maximum sintering temperature 1600 DEG C, prepares finished product after firing time 96h.

The preparation technology of metallic large size ceramic heat storage the most according to claim 4, is characterized in that described in nitridation The process carrying out in room burning till is: be raised to 1400 DEG C from room temperature, programming rate 50 DEG C/min, little 1400 DEG C of insulations 2～2.5 Time；Then it is raised to 1550～1600 DEG C from 1400 DEG C: programming rate 25 DEG C/min, little at 1550～1600 DEG C of insulation 2.5-3 Time.

The preparation technology of metallic large size ceramic heat storage the most according to claim 4, is characterized in that described organic viscous Knot agent is methylcellulose, hydroxyethyl cellulose, cyanethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose, ethyl cellulose One or more combinations in element, polyvinyl alcohol, butyl silicate, vinyl acetate resin, modified starch；Described organic plasticizers is Polyethylene glycol oxide, the compositions of polyvinyl alcohol.

The preparation technology of metallic large size ceramic heat storage the most according to claim 4, is characterized in that described wetting agent For one or more groups in Polyethylene Glycol, glycerol, butanediol, propylene glycol, hexylene glycol, xylitol, polypropylene glycol, Sorbitol Close；Described lubricant is one or more combinations of vegetable oil, mineral oil, vaseline.

The preparation technology of metallic large size ceramic heat storage the most according to claim 4, is characterized in that described step (4) In just practicing, the moisture content of described pug block, index of plasticity be: moisture content 28～32%, extrusion force plasticity 1700～2200N.

Metallic large size ceramic heat storage the most according to claim 3, is characterized in that described heat storage upper surface is provided with At least one detent, described heat storage lower surface is provided with the positioning convex strip coordinated with detent.

Metallic large size ceramic heat storage the most according to claim 3, is characterized in that described heat storage sidepiece is additionally provided with Axial notch.