CN101293776A - Industrial standard blackbody molding method - Google Patents

Industrial standard blackbody molding method Download PDF

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Publication number
CN101293776A
CN101293776A CNA2007100489624A CN200710048962A CN101293776A CN 101293776 A CN101293776 A CN 101293776A CN A2007100489624 A CNA2007100489624 A CN A2007100489624A CN 200710048962 A CN200710048962 A CN 200710048962A CN 101293776 A CN101293776 A CN 101293776A
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China
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industrial standard
furnace
standard blackbody
heat
industrial
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何勇
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SICHUAN JUNLI INVESTMENT GROUP CO Ltd
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SICHUAN JUNLI INVESTMENT GROUP CO Ltd
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Priority to CNA2007100489624A priority Critical patent/CN101293776A/en
Publication of CN101293776A publication Critical patent/CN101293776A/en
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Abstract

The invention discloses a method for molding an industrial standard black body. The method comprises the steps as the follows: (1) mixing refractory sand 65-85%, binder 1-10%, wood dust 10-30% and water 1-5% to form a ceramic body; (2) preparing the ceramic body into the shape of a hollow truncated cone or a hollow sphere, and drying at 500-1,200 DEG C for 0.5-2.5 hours; (3) calcining for 1-5 hours to form porous ceramic; and (4) bonding a high emissivity layer on the inner and outer walls of the porous ceramic with bonding agent, and calcining at 500-1,200 DEG C for 3-6 hours. The molded industrial standard black body can enlarge heat transfer area of the hearth an industrial heater/kiln, improve hearth blackness, regulate heat rays and increase the arrival rate of the heat rays and the ratio of heat transfer by radiation.

Description

The forming method of industrial standard blackbody
Technical field
The present invention relates to a kind of industrial black matrix, relate in particular to a kind of forming method that is mainly used in the industrial standard blackbody that improves industrial heating furnace kiln quantity of radiant energy arrival rate.
Background technology
So far, in order to improve the thermo-efficiency of industrial heating furnace kiln, taked to be intended to reduce the light-duty furnace building material of accumulation of heat loss and heat lost by radiation, also or with increasing the burner hearth area come enhancement of heat transfer, or be coated with the high emissivity coating at inboard wall of burner hearth, also have and in burner hearth, install the technology such as device that change heat transfer type additional.The furnace building material lightness is top layer or an interlayer of making furnace wall with the very little refractory fibre of unit weight, even builds and help the fiber stove.Full fiber stove has reduced the accumulation of heat loss and the heat lost by radiation of stove really, and the synthesis energy saving rate is up to 11%.But these technical measures just get lodged in heat in the burner hearth, and invisible heat is the state that diffuse-reflectance distributes in the burner hearth but do not solve, and the arrival rate of invisible heat is low, and the emittance of refractory fibre is not high yet, so fractional energy savings is not high; Britain's " glass " No.10 (1992) report, the cellular refractory brick of Didier Fomital uses on the cell furnace top, and brick is bigger three times than standard square with the furnace gas contact interface, can save energy 5%-8% in theory.But this brick can not be regulated and control invisible heat, and invisible heat directly directive is heated material, also fails to improve emittance, so fractional energy savings is not high; Shanghai science tech publishing house in April, 1993 first version " practical power-saving technology " is described, water island factory of Kawasaki, Japan Iron And Steel Company is provided with " device that changes heat transfer type " on heater for rolling steel, the heat that it transmits semiconvection is converted to radiative transfer, to improve heat transfer efficiency, make the hear rate of process furnace descend about 5%, but the heat transfer area increase of this way is very little, can not regulate and control invisible heat, also fail to improve emittance, so fractional energy savings is not high yet, and its technology implementation difficulty is bigger, and the position that has is difficult to be provided with; The patent No. be ZL94236755.3's " severe radiation heat transfer energy-saving industrial stove ", though solved the increase heat transfer area, improved emittance, make invisible heat be bundle and direct directive workpiece, strengthened radiative transfer effectively, fractional energy savings reaches more than 20%, but its embodiment can not or be not easy to install the type of furnace of severe radiation element for to install the severe radiation element additional on the stove that has built up to those, for example pit furnace, cementing furnace, crucible oven, cell furnace etc., application is restricted.
In order to address the above problem, application number occurred and be " 03117829.4 ", name is called the patent application of " carrying black matrix furnace building material and heating stove thereof ".To Fuel Furnace, flame stream is constantly flowing, contact with material with the furnace wall in the round-robin process, conduct, convection current carries out simultaneously, and flame flows quantity of radiant energy constantly, we can say that flame stream provides heat with convection current and radiation dual mode in stove.Because furnace wall blackness and area have been strengthened the radiation heat transfer between furnace gas and furnace lining after increasing, and the furnace lining internal surface temperature is increased, thereby furnace lining and the radiation heat transfer that is heated workpiece have also just been strengthened, so the heating-up time of workpiece shortens, the spent air temperture of coming out of the stove reduces, and fuel consumption just will reduce.Improve the furnace wall emittance and increase the furnace wall heat transfer area, the furnace heat transfer amount is increased, the heat that workpiece obtains increases.In traditional industrial furnace design, after size of burner hearth was determined, the furnace wall area is also corresponding thereupon to be determined, come enhancement of heat transfer if intend with increasing stove training area, the necessary increasing size of burner hearth of making use of momentum, and will cause that so a series of design variables change, and cause increasing stove power or increase fuel consumption; Improving the universal method of furnace wall emittance now, is that the defective of its essence is the problem that can't resolve coating aging at its surperficial coated high emissivity coating.According to the black matrix theory of Infrared Physics, perfect black body is the object that can all absorb the projection radiation energy, and its emittance is 1.The character of black matrix has been represented the general character of object thermal radiation rule, and it is the limit of actual object thermorodiative property.According to Kirchhoff's law, under thermodynamic equilibrium state, the specific absorption of object equals its emittance, that is to say that the power of absorption of object is big, and its emittance is necessarily strong.According to blue Bei Tedinglv, in all directions radiation emitted energy of space, the energy of normal direction is maximum again, and the energy of tangential direction equals zero, and what of the radiating capacity that sends to the space either direction are directly proportional with the cosine of this direction with the normal direction angle.In this application, particularly on the furnace roof, be provided with industrial standard blackbody at the industrial heating furnace furnace wall, its normal direction is over against workpiece, black matrix on furnace wall can be protrude, part protrudes, also can be recessed into, black matrix is a cavity frustum, and frustum has definite length-to-diameter ratio L/R; To keep certain roughness on cavity frustum surface; Cavity frustum surface sintering has the high emissivity layer; The frustum bottom has wave hole groove.Black matrix can be arranged on earlier on the refractory brick of building furnace wall, setting simultaneously in the furnace wall process can also built with other method, on refractory brick or furnace wall surface towards burner hearth one side, also sintering has the high emissivity layer, like this, burner hearth has just formed an infrared heating system, numerous black matrixes constantly absorbs the invisible heat of diffusion with 0.96 ratio, simultaneously continuously launch invisible heat with same ratio again, standard because of cavity frustum geometrical shape, make these invisible heats that is launched out again, finished from the regulation process of the direct directive workpiece of disorder to order.
But application number also has the following disadvantages for the patent application of " 03117829.4 ": one, in this application, how not relate to the moulding industrial standard blackbody, black matrix is meant that incident electromagnetic wave all is attracted, both not reflection did not have transmission yet, and obviously there is not real black matrix in nature, but on some wave band, it is black matrix myopia preferably that many objects are arranged, and therefore, it is particularly important how to obtain industrial standard blackbody; Two, industrial standard blackbody is the cavity taper type, be arranged on the industrial heating furnace furnace wall particularly on the furnace roof, its normal direction is over against workpiece, in the actual installation process, be difficult to the normal direction of industrial standard blackbody and workpiece over against, cause not reach above-mentioned technique effect; Three, black matrix is a cavity frustum, frustum has definite length-to-diameter ratio L/R, to keep certain roughness on cavity frustum surface, cavity frustum surface sintering has the high emissivity layer, the frustum bottom has wave hole groove, make the black matrix element make difficulty, be difficult for producing the industrial standard blackbody described in the patent document.Four, since black matrix on furnace wall can be protrude, part protrudes, and also can be recessed into, and inconvenience is installed.
Summary of the invention
The objective of the invention is to overcome the above-mentioned technical problem that the black matrix in the existing industrial heating furnace kiln exists, a kind of forming method that is mainly used in the industrial standard blackbody in the industrial heating furnace kiln is provided.Adopt the industrial standard blackbody of moulding of the present invention can increase industrial heating furnace kiln thorax heat transfer area, improve the burner hearth blackness, regulation and control invisible heat, the arrival rate of increase invisible heat, Enhanced Radiation Reduced Blast heat transfer ratio.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of forming method of industrial standard blackbody is characterized in that: described industrial standard blackbody prepares according to the following steps:
Form ceramic body behind a, the water uniform mixing with the wood chip of the tackiness agent of the fire sand of 65-85%, 1-10%, 10-30% and 1-5%;
B, ceramic body is made into the cavity frustum or cavity spherical, under the 500-1200 degree, dried 0.5-2.5 hour;
C, insulation roasting 1-5 hour again, formed porous ceramics after 2-5 hour;
D, the high emissivity layer is bonded on the inside and outside wall of porous ceramics, and under the 500-1200 degree, obtained the industrial standard blackbody of moulding in sintering 3-6 hour with binding agent.
On the described industrial standard blackbody opening is arranged.
Described tackiness agent is a clay.
Described high emissivity layer is made by melanism zirconium system, zirconium system, iron system, silicon carbide system or rare earth based material.
Described binding agent is a silicon ester.
The invention has the advantages that:
One, the industrial standard blackbody hardness that adopts the per-cent among the present invention to obtain is suitable, and sound construction is suitable for industrial application, and the industrial standard blackbody of conveniently moulding industrial standard blackbody, and moulding is simple in structure, and is easy for installation.
Two, the industrial standard blackbody that adopts the per-cent among the present invention to obtain is applied to increase the burner hearth heat transfer area in the industrial heating furnace kiln, by existing stove design specifications, after size of burner hearth was determined, the burner hearth internal surface area was promptly definite, and this area is exactly the area that participates in furnace heat transfer certainly.After in burner hearth, industrial standard blackbody being set, increased the heat transfer area of burner hearth significantly, its numerical value can reach more than 1 times of former burner hearth area.
Three, the present invention is used for the industrial heating furnace kiln, improved the burner hearth blackness, the method of traditional raising burner hearth blackness, be to adopt the high infrared coating of emittance that it is carried out application, the level that can reach is 0.88-0.92 so far, but its catabiosis is difficult to fundamentally solve, and it is fast to lose efficacy, and industrial applicability can not be lasting.Its total emissivity of industrial standard blackbody is 0.96, has high stability, and not aging substantially, industrial standard blackbody itself is not a thermal source, and industrial implementation is convenient and reliable.
Four, the present invention is used for the industrial heating furnace kiln, function with regulation and control invisible heat, to being the invisible heat of diffusion shape in the burner hearth, element absorbs as early as possible with its high absorption characteristic, when it is launched again with the high emission characteristic again, borrows the geometry of himself and the position of layout, finished the regulation process of invisible heat from disorder to order, make the direct directive workpiece of invisible heat, improved irradiance, increased the arrival rate of invisible heat widely workpiece.
Five, the present invention is used for the industrial heating furnace kiln, increased the ratio of radiative transfer, in Fuel Furnace, when flame flow was flowed through the severe radiation element, element conducted heat to workpiece in the radiating mode after absorbing the heat of convection current transmission again, realized the conversion of heat transfer type, promptly a part of transmission of heat by convection in the stove is changed into radiative transfer, increased the ratio of radiative transfer, improved heat transfer efficiency.
Six, the present invention is applicable to that use range is wide in the heating stove of electricity, gas, oil, coal equal energy source.
Seven, the present invention is used for the industrial heating furnace kiln, and resistance furnace, gas furnace fractional energy savings are 20%-30%, and oil oven, coal furnace fractional energy savings are 18%-25%, makes industrial heating furnace kiln productivity improve 10%--20%.
Eight, the present invention is used for the industrial heating furnace kiln, and process furnace kiln temperature homogeneity is improved, and compares with traditional furnace building material, and the burner hearth vertical temperature-difference reduces about 50%, and furnace temperature is stable, little power consumption during insulation.
Nine, the present invention is used for the industrial heating furnace kiln, reduces and the corresponding exhaust gas emission of fractional energy savings, and exhaust temperature descends about 70 ℃, has reduced topsoil.
Ten, the present invention is used for the industrial heating furnace kiln, and the heating-up time when having shortened heated parts, load temperature rise period reducing power consumption significantly improves, and empty stove is when heating up, and power savings is remarkable.
Description of drawings
Fig. 1 is the cavity globular industrial standard blackbody structural representation of moulding of the present invention
Fig. 2 is arranged on the structural representation that heats on the stove for industrial standard blackbody
Be labeled as among the figure: 1, industrial standard blackbody, 2, the heating stove, 3, radiating aperture, 4, the high emissivity layer.
Embodiment
Embodiment 1
A kind of forming method of industrial standard blackbody, described industrial standard blackbody prepares according to the following steps: form ceramic body behind a, the fire sand with 65%, 10% tackiness agent, 20% wood chip and 5% the water uniform mixing; B, ceramic body is made into the cavity frustum, under 500 degree, dried 0.5 hour; C, insulation are after 2 hours, and roasting is 1 hour again, form porous ceramics; D, high emissivity layer 4 is bonded on the inside and outside wall of porous ceramics, and sintering obtained the industrial standard blackbody 1 of moulding in 3 hours under 500 degree, and on industrial standard blackbody 1, opening is arranged, i.e. radiating aperture 3 with binding agent.Wherein, the tackiness agent in a step is a clay, and the high emissivity layer 4 in the d step is made by melanism zirconium based material, and binding agent is a silicon ester.
Industrial standard blackbody 1 has certain thickness, frustum has definite length-to-diameter ratio L/R=3-6, for guaranteeing that each industrial standard blackbody 1 gives off enough energy, the top is the cavity frustum of opening, adapting to industrial needs, the port area that frustum must be necessary, the frustum surface will keep certain roughness, the frustum bottom has wave hole groove, to increase emittance.Industrial standard blackbody 1 at first is installed on the top and back wall of heating stove 2 with machinery and bonding method, and next is configured in other position of heating stove 2, simultaneously to the comprehensive application of inboard wall of burner hearth, to obtain better result of use.
When the present invention was applied in the heating stove, it is relative with the interior location of workpiece of heating stove 2 that the opening of industrial standard blackbody 1 is radiating aperture 3.Wherein, industrial standard blackbody 1 surfaces externally and internally is a high emissivity layer 4, and industrial standard blackbody 1 is the cavity frustum, be arranged on the refractory brick of heating stove 2, and radiating aperture 3 be one relative with the location of workpiece, heats in the stove 2 also to be provided with high emissivity layer 4.
Black matrix is a noun during radiative transfer is learned, and is meant the object that can all absorb the thermal radiation energy that is run into.The atom of radiation in being enclosed in the chamber and chamber wall reaches balance, and promptly the energy of atomic emissions equals the energy that they absorb in the unit time, is called black matrix in this chamber.Occurring in nature does not have absolute black matrix, and every body surface is more black more coarse, just more near black matrix.In industrial application, produced polytype industrial standard blackbody, among the present invention, on the spherical shell of the industrial standard blackbody 1 of cavity frustum, open a radiating aperture 3, caloradiance just has an opportunity to shoot out from radiating aperture 3 after reflecting many times in frustum inside, so the radiant heat major part is stayed in the frustum.
For guaranteeing that each blackbody radiation goes out enough energy, to adapt to industrial needs, the port area that industrial standard blackbody 1 must be necessary, at industrial standard blackbody 1 surperficial sintering high emissivity layer 4 is arranged, the material of high emissivity layer 4 adopts melanism zirconium system, zirconium system, iron system, silicon carbide system, rare earth system, with the binding agent combination, and under 850 degree, finish sintering; Industrial standard blackbody 1 surface will keep certain roughness, and industrial standard blackbody 1 bottom has wave hole groove, to increase emittance.Industrial standard blackbody 1 can be arranged on earlier on the refractory brick of building furnace wall, setting simultaneously in the furnace wall process can also built with other method, as be set directly on the furnace wall and prefabricated component thereof of moulding, simultaneously at refractory brick or furnace wall towards burner hearth one side, also sintering has high emissivity layer 4, industrial standard blackbody 1 can use the material of clay matter, high alumina matter, siliceous, magnalium matter, various refractory fibre materials, molding mode comprise sinter molding, fusion cast process, the scope of application is extremely broad.
When the present invention was applied in the heating stove, the heating-up time of heated parts shortened significantly, and the heating-up time that load temperature rise period reducing power consumption increases substantially heated parts is a heat treated important step, also is the operation of energy consumption maximum.Because the severe radiation element has improved the irradiance to workpiece, thereby the workpiece heating-up time is shortened significantly, load intensification reducing power consumption increases substantially, and compares with existing energy-conservation stove, adopts heating stove reducing power consumption of the present invention up to 33.33%-36.53%.When application is of the present invention in the existing heating stove, furnace lining is not changed, power savings was significantly under the situation that furnace lining is not changed when empty stove heated up, a plurality of industrial standard blackbodies are installed, though increased the body of heater accumulation of heat, but the heating-up time shortens on the contrary, and this is because when increasing the fender range of extension, has improved the emittance of burner hearth.In thermal radiation range, the specific absorption of all objects equates with blackness under synthermal.Because the surface of burner hearth blackness increases, the corresponding raising of its receptivity, fire box temperature has not more increased before the mounting industrial standard black matrix.Burner hearth is to being heated the corresponding increase of radiative transfer amount of workpiece, thereby strengthened the heat exchange in the stove, though the rising of surface of burner hearth temperature meanwhile can make the heat lost by radiation by furnace lining increase to some extent, but because burner hearth becomes quadruplicate relation to the radiative transfer amount of workpiece with the surface of burner hearth temperature, and the heat that is transmitted by the furnace wall unit surface only becomes the relation of first power with the temperature difference of furnace lining surfaces externally and internally, and it is less that the furnace lining heat lost by radiation increases.After installing a plurality of industrial standard blackbodies additional, increased the accumulation of heat loss of furnace lining significantly, should occur the phenomenon that the empty stove heating-up time increases than original prolongation, current consumption according to reason, but practical situation are opposite, the empty stove heating-up time shortens than original, the power consumption minimizing.This is that effective emissivity improves because after installing industrial standard blackbody additional, accelerated heat transfer rate and heat-insulating property and strengthened, so fire box temperature raise soon due to.Adopt process furnace kiln temperature of the present invention stable, little power consumption during insulation, the increase of fender range of extension is to realize that numerous industrial standard blackbodies is given the credit in the growth of the inboard wall of burner hearth thermal capacity of Chu Xianing thus under the situation that furnace volume does not have to expand in the present technique.After the burner hearth heating reaches stable state, though furnace wall is based on heat radiation, but most heats are stayed in the burner hearth, stay in the industrial standard blackbody more precisely, make furnace heat increase under the same temperature, improved furnace temperature stability, these characteristics have following superiority: it is little to take on the temperature fluctuation of when material, after the box-type furnace discharging general " temperature reductions " reduce 60~80 and spend; Furnace temperature is gone up fast, and under the same conditions, when furnace temperature reaches 850 degree back outages, after 24 hours, temperature is reduced to 200 degree, after the transformation, cut off the power supply that to measure fire box temperature after 24 hours be 450 degree, thus the empty stove heating-up time of discontinuous running stove obviously shorten, startup is soon.Holding stage has reduced power consumption, on existing RX327529 box-type furnace, reduces the conduction time of holding stage over halfly, and the 90kW bench vehicle type electrical resistance furnace 1min that generally switches on can keep insulation 4min.Sometimes in the 1h, back zone (30kW) switches on altogether and has only 8min, and proparea (60kW) keeps 930 to spend not power consumption, and furnace temperature is stable will to help the prolongation in work-ing life of contactor, rly. undoubtedly.The more thermal capacity of burner hearth helps overcoming the disadvantageous effect that short-term has a power failure and brings, and for example is incubated the later stage to meet power failure, does not influence the workpiece heating quality basically.Technology implementation is convenient, does not need body of heater is done any change, and short construction period can be finished in general 4-6 days, the operation of at once going into operation.
The practice that the Fuel Furnace severe radiation is conducted heat, industrial standard blackbody 1 also can be applicable to Fuel Furnace.Industrial standard blackbody 1 is the distribution of invisible heat, improves the net heat of heated parts, therefore is applicable to Fuel Furnace fully.Adopt industrial standard blackbody to transform 2t aluminium melting reverberatory furnace (Sweet natural gas), the solar term rate reaches 20.8%, and rate reaches 19.6% during joint.Industrial standard blackbody similarly can be applied to heater for rolling steel, forge furnace, pottery and burn till stove, cell furnace etc.
The setting of industrial standard blackbody 1 and installation principle, the increase of burner hearth area is to realize by numerous industrial standard blackbody 1 is set.The quantity of industrial standard blackbody 1 should be principle to significantly improve heat transfer rate.When the burner hearth area behind the installation elements more than or equal to 2 times not during the burner hearth area before the installation elements, the enhancement of heat transfer effect could be significantly.The spoke hole of industrial standard blackbody should face toward workpiece, can make the element quantity of radiant energy at most over against workpiece like this, improves to be radiated bit rate and to the irradiance of workpiece, to strengthen radiative transfer.Locate at furnace roof or side wall etc., industrial standard blackbody 1 can be set.The furnace lining each several part beyond furnace roof in addition,, then improves the furnace wall blackness and helps improving furnace temperature more, so should carry out application with the high emissivity material if the insulation of wall performance is good more.In like manner, the reply electric heating element partly carries out application in the face of burner hearth.
The inhomogeneity process of industrial standard blackbody 1 regulating and controlling furnace temperature, when industrial standard blackbody 1 becomes the secondary media heated parts of invisible heat transmission in burner hearth, industrial standard blackbody 1 element is at first with 0.96 height ratio absorption characteristic, absorb the invisible heat of diffusion shape rapidly, self builds up heat, improve temperature, they just change into new " thermal source " that has the high emission function one by one immediately, penetrate to the work heat of emission by the direction of setting, finish the invisible heat of diffusion shape regulation process, improved the arrival rate of invisible heat from disorder to order.The place that furnace temperature is on the low side is provided with the industrial standard blackbody of greater density, transfers some invisible heats more and comes, and improves the temperature at this place.All industrial standard blackbody forms many new " thermals source " on the furnace wall.So, when former thermal source provides certain heat supply intensity heat energy, increased a plurality of " burners " in the burner hearth again, they with the invisible heat of low discharge, equably, directive workpiece continuously.The height absorption of industrial standard blackbody and the performance of high emission are obtained by its geometric parameter and surface property, have high stability, and be aging, unattenuated, as long as the industrial standard blackbody that is provided with existence, its excellent properties just exists.Obtain good temperature homogeneity so regulate and control invisible heat, just can not change working time with stove.
Embodiment 2
A kind of forming method of industrial standard blackbody, described industrial standard blackbody prepares according to the following steps: form ceramic body behind a, the fire sand with 85%, 2% tackiness agent, 10% wood chip and 3% the water uniform mixing; B, that ceramic body is made into cavity is spherical, dries 2.5 hours under 1200 degree; C, insulation are after 5 hours, and roasting is 5 hours again, form porous ceramics; D, high emissivity layer 4 is bonded on the inside and outside wall of porous ceramics, and sintering obtained the industrial standard blackbody 1 of moulding in 6 hours under 1200 degree with binding agent.Wherein, on the industrial standard blackbody 1 opening is arranged, i.e. radiating aperture 3, tackiness agent is a clay, and high emissivity layer 4 is made by ferrous material, and binding agent is a silicon ester.
Embodiment 3
A kind of forming method of industrial standard blackbody, described industrial standard blackbody prepares according to the following steps: form ceramic body behind a, the fire sand with 70%, 1% tackiness agent, 24% wood chip and 5% the water uniform mixing; B, ceramic body is made into the cavity frustum, under 800 degree, dried 1 hour; C, insulation are after 3 hours, and roasting is 2 hours again, form porous ceramics; D, high emissivity layer 4 is bonded on the inside and outside wall of porous ceramics, and sintering obtained the industrial standard blackbody 1 of moulding in 5 hours under 800 degree, on the industrial standard blackbody 1 opening was arranged, i.e. radiating aperture 3 with binding agent.Wherein, tackiness agent is a clay, and high emissivity layer 4 is made by the silicon carbide based material, and binding agent is a silicon ester.
Embodiment 4
A kind of forming method of industrial standard blackbody is characterized in that: described industrial standard blackbody prepares according to the following steps: form ceramic body behind a, the fire sand with 80%, 7% tackiness agent, 10% wood chip and 3% the water uniform mixing; B, that ceramic body is made into cavity is spherical, dries 2 hours under 1000 degree; C, insulation are after 4 hours, and roasting is 4 hours again, form porous ceramics; D, high emissivity layer 4 is bonded on the inside and outside wall of porous ceramics, and sintering obtained the industrial standard blackbody 1 of moulding in 5 hours under 1000 degree, on industrial standard blackbody 1 opening was arranged with binding agent.Wherein, described tackiness agent is a clay, and high emissivity layer 4 is made by the rare earth based material, and binding agent is a silicon ester.

Claims (5)

1, a kind of forming method of industrial standard blackbody is characterized in that: described industrial standard blackbody prepares according to the following steps:
Form ceramic body behind a, the water uniform mixing with the wood chip of the tackiness agent of the fire sand of 65-85%, 1-10%, 10-30% and 1-5%;
B, ceramic body is made into the cavity frustum or cavity spherical, under the 500-1200 degree, dried 0.5-2.5 hour;
C, insulation roasting 1-5 hour again, formed porous ceramics after 2-5 hour;
D, the high emissivity layer is bonded on the inside and outside wall of porous ceramics, and under the 500-1200 degree, obtained the industrial standard blackbody of moulding in sintering 3-6 hour with binding agent.
2, the forming method of industrial standard blackbody according to claim 1 is characterized in that: on the described industrial standard blackbody opening is arranged.
3, the forming method of industrial standard blackbody according to claim 1 and 2 is characterized in that: described tackiness agent is a clay.
4, the forming method of industrial standard blackbody according to claim 1 and 2 is characterized in that: described high emissivity layer is made by melanism zirconium system, zirconium system, iron system, silicon carbide system or rare earth based material.
5, the forming method of industrial standard blackbody according to claim 1 and 2 is characterized in that: described binding agent is a silicon ester.
CNA2007100489624A 2007-04-27 2007-04-27 Industrial standard blackbody molding method Pending CN101293776A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101654364B (en) * 2009-09-10 2012-10-24 中国矿业大学(北京) Method for extruding tubular ceramic products by virtue of composite thermoplastic medium
CN103954131A (en) * 2014-04-17 2014-07-30 四川科达节能技术有限公司 Inner liner material for industrial kiln furnace

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101654364B (en) * 2009-09-10 2012-10-24 中国矿业大学(北京) Method for extruding tubular ceramic products by virtue of composite thermoplastic medium
CN103954131A (en) * 2014-04-17 2014-07-30 四川科达节能技术有限公司 Inner liner material for industrial kiln furnace

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