WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

F27B　FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS

F27B 1/00 Shaft or like vertical or substantially vertical furnaces (for preheating, burning, calcining or cooling lime, magnesia or dolomite C04B 2/12)

F27B 1/005 ・{wherein no smelting of the charge occurs, e.g. calcining or sintering furnaces}

F27B 1/02 ・with two or more shafts or chambers, e.g. multi-storey

F27B 1/025 ・・{with fore-hearth}

F27B 1/04 ・・Combinations or arrangements of shafts

F27B 1/06 ・of other than up-draught type

F27B 1/08 ・heated otherwise than by solid fuel mixed with charge

F27B 1/10 ・Details, accessories, or equipment peculiar to furnaces of these types

F27B 1/12 ・・Shells or casings; Supports therefor

F27B 1/14 ・・・Arrangements of linings (linings in general F27D 1/00)

F27B 1/16 ・・Arrangements of tuyeres

F27B 1/18 ・・Arrangements of dust collectors

F27B 1/20 ・・Arrangements of devices for charging

F27B 1/21 ・・Arrangements of devices for discharging

F27B 1/22 ・・Arrangements of heat-exchange apparatus (heat-exchangers in general F28C, F28D)

F27B 1/24 ・・Cooling arrangements

F27B 1/26 ・・Arrangements of controlling devices

F27B 1/28 ・・Arrangements of monitoring devices, of indicators, of alarm devices

F27B 3/00 Hearth-type furnaces, e.g. of reverberatory type (F27B 9/00, F27B 11/00, F27B 13/00, F27B 14/00, F27B 15/00, F27B 21/00 take precedence); Tank furnaces

F27B 3/002 ・{Siemens-Martin type furnaces}

F27B 3/005 ・・{Port construction}

F27B 3/007 ・・・{Removable burner head}

F27B 3/02 ・of single-chamber fixed-hearth type

F27B 3/04 ・of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type furnaces

F27B 3/045 ・・{Multiple chambers, e.g. one of which is used for charging}

F27B 3/06 ・with movable working chambers or hearths, e.g. tiltable, {oscillating or describing a composed movement}

F27B 3/065 ・・{tiltable}

F27B 3/08 ・heated electrically, with or without any other source of heat

F27B 3/085 ・・{Arc furnaces}

F27B 3/10 ・Details, accessories, or equipment peculiar to hearth-type furnaces

F27B 3/105 ・・{Slag chamber}

F27B 3/12 ・・Working chambers or casings; Supports therefor

F27B 3/14 ・・・Arrangements of linings

F27B 3/16 ・・・Walls; Roofs

F27B 3/18 ・・Arrangements of devices for charging

F27B 3/183 ・・・{Charging of arc furnaces vertically through the roof, e.g. in three points}

F27B 3/186 ・・・・{Charging in a vertical chamber adjacent to the melting chamber}

F27B 3/19 ・・Arrangements of devices for discharging

F27B 3/20 ・・Arrangements of heating devices

F27B 3/205 ・・・{Burners}

F27B 3/22 ・・Arrangements of air or gas supply devices

F27B 3/225 ・・・{Oxygen blowing}

F27B 3/24 ・・Cooling arrangements

F27B 3/26 ・・Arrangements of heat-exchange apparatus

F27B 3/263 ・・・{Regenerators}

F27B 3/266 ・・・・{Exhaust gases reversing flow devices}

F27B 3/28 ・・Arrangement of controlling, monitoring, alarm or the like devices

F27B 5/00 Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated (F27B 9/00 takes precedence)

F27B 5/02 ・of multiple-chamber type

F27B 5/04 ・adapted for treating the charge in vacuum or special atmosphere

F27B 5/06 ・Details, accessories, or equipment peculiar to furnaces of these types

F27B 5/08 ・・Arrangements of linings

F27B 5/10 ・・Muffles

F27B 5/12 ・・Arrangement of devices for charging

F27B 5/13 ・・Arrangement of devices for discharging

F27B 5/14 ・・Arrangements of heating devices

F27B 5/16 ・・Arrangements of air or gas supply devices

F27B 5/18 ・・Arrangement of controlling, monitoring, alarm or like devices

F27B 7/00 Rotary-drum furnaces, i.e. horizontal or slightly inclined

F27B 7/02 ・of multiple-chamber or multiple-drum type

F27B 7/04 ・・with longitudinal divisions

F27B 7/06 ・adapted for treating the charge in vacuum or special atmosphere

F27B 7/08 ・externally heated

F27B 7/10 ・internally heated, e.g. by means of passages in the wall

F27B 7/12 ・tiltable

F27B 7/14 ・with means for agitating or moving the charge

F27B 7/16 ・・the means being fixed relatively to the drum, {e.g. composite means}(F27B 7/04 takes precedence)

F27B 7/161 ・・・{the means comprising projections jutting out from the wall}

F27B 7/162 ・・・・{the projections consisting of separate lifting elements, e.g. lifting shovels}

F27B 7/166 ・・・{the means comprising chains}

F27B 7/167 ・・・{the means comprising partitions}

F27B 7/18 ・・the means being movable within the drum

F27B 7/20 ・Details, accessories, or equipment peculiar to rotary-drum furnaces

F27B 7/2016 ・・{Arrangements of preheating devices for the charge}

F27B 7/2025 ・・・{consisting of a single string of cyclones}

F27B 7/2033 ・・・・{with means for precalcining the raw material}

F27B 7/2041 ・・・{consisting of at least two strings of cyclones with two different admissions of raw material}

F27B 7/205 ・・・・{with precalcining means on the string supplied with exhaust gases from the cooler}

F27B 7/2058 ・・・・{with precalcining means on each string}

F27B 7/2066 ・・・{comprising a band transporter}

F27B 7/2075 ・・{Removing incrustations}

F27B 7/2083 ・・{Arrangements for the melting of metals or the treatment of molten metals}

F27B 7/22 ・・Rotary drums; Supports therefor

F27B 7/2206 ・・・{Bearing rings}

F27B 7/224 ・・・{Discharge ends}

F27B 7/24 ・・・Seals between rotary and stationary parts

F27B 7/26 ・・Drives

F27B 7/28 ・・Arrangements of linings

F27B 7/30 ・・Arrangements of partitions

F27B 7/32 ・・Arrangement of devices for charging

F27B 7/3205 ・・・{Charging}

F27B 7/33 ・・Arrangement of devices for discharging

F27B 7/34 ・・Arrangements of heating devices

F27B 7/36 ・・Arrangements of air or gas supply devices

F27B 7/362 ・・・{Introducing gas into the drum axially or through the wall}

F27B 7/38 ・・Arrangements of cooling devices

F27B 7/383 ・・・{Cooling devices for the charge}

F27B 7/386 ・・・・{Rotary-drum cooler}

F27B 7/40 ・・・Planetary coolers

F27B 7/42 ・・Arrangement of controlling, monitoring, alarm or like devices

F27B 9/00 Furnaces through which the charge is moved mechanically, e.g. of tunnel type (F27B 7/14 takes precedence); Similar furnaces in which the charge moves by gravity

F27B 9/02 ・of multiple-track type; of multiple-chamber type; Combinations of furnaces

F27B 9/021 ・・{having two or more parallel tracks}

F27B 9/022 ・・・{With two tracks moving in opposite directions}

F27B 9/023 ・・・・{with a U turn at one end}

F27B 9/024 ・・・・・{with superimposed tracks}

F27B 9/025 ・・・{having two or more superimposed tracks (F27B 9/024 takes precedence)}

F27B 9/028 ・・{Multi-chamber type furnaces, (F27B 9/029 takes precedence)}

F27B 9/029 ・・{Multicellular type furnaces constructed with add-on modules}

F27B 9/04 ・adapted for treating the charge in vacuum or special atmosphere

F27B 9/042 ・・{Vacuum furnaces}

F27B 9/045 ・・{Furnaces with controlled atmosphere}

F27B 9/047 ・・・{the atmosphere consisting of protective gases}

F27B 9/06 ・heated without contact between combustion gases and charge; electrically heated

F27B 9/061 ・・{with at least two longitudinal chambers carrying combustion gases, i.e of the Dressler type}

F27B 9/062 ・・{electrically heated}

F27B 9/063 ・・・{Resistor heating, e.g. with resistors also emitting IR rays}

F27B 9/065 ・・・・{the resistance being transported by the conveyer}

F27B 9/066 ・・・{heated by lamps}

F27B 9/067 ・・・{heated by induction}

F27B 9/068 ・・{heated by radiant tubes, the tube being heated by a hot medium, e.g. hot gases}

F27B 9/08 ・・heated through chamber walls

F27B 9/082 ・・・{Muffle furnaces}

F27B 9/084 ・・・・{the muffle being fixed and in a single piece}

F27B 9/086 ・・・・{with two or more fixed muffles}

F27B 9/088 ・・・・{Series of separate muffles conveyed through the furnace}

F27B 9/10 ・・heated by hot air or gas

F27B 9/12 ・with special arrangements for preheating or cooling the charge

F27B 9/14 ・characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment (F27B 9/28 takes precedence; travelling or movable supports or containers for the charge F27D 3/12)

F27B 9/142 ・・{the charge moving along a vertical axis}

F27B 9/145 ・・{the charge moving along a serpentine path}

F27B 9/147 ・・{the charge moving on an inclined floor}

F27B 9/16 ・・the charge moving in a circular or arcuate path

F27B 9/18 ・・・under the action of scrapers or pushers

F27B 9/185 ・・・・{multiple hearth type furnaces}

F27B 9/20 ・・the charge moving in a substantially straight path {tunnel furnace}

F27B 9/201 ・・・{walking beam furnace}

F27B 9/202 ・・・・{Conveyer mechanisms therefor}

F27B 9/203 ・・・・・{having ramps (F27B 9/206 takes precedence)}

F27B 9/205 ・・・・・{having excentrics or lever arms (F27B 9/206 takes precedence)}

F27B 9/206 ・・・・・{consisting of a single central beam}

F27B 9/207 ・・・・・{consisting of two or more conveyers}

F27B 9/208 ・・・・{the workpieces being rotated during their advance}

F27B 9/22 ・・・{on rails, e.g.} under the action of scrapers or pushers (F27B 9/26 takes precedence)

F27B 9/222 ・・・・{the path comprising a section specially adapted for effecting equalisation of the temperature of the charge}

F27B 9/225 ・・・・{the charge being subjected to an additional manipulation along the path}

F27B 9/227 ・・・・{with rotation of the charge (F27B 9/147 takes precedence)}

F27B 9/24 ・・・being carried by a conveyer {transport by conveyers in general B65G}

F27B 9/2407 ・・・・{the conveyer being constituted by rollers (roller hearth furnace)}

F27B 9/2415 ・・・・・{the charge rotating about an axis transversal to the axis of advancement of the charge}

F27B 9/2423 ・・・・・{the charge rotating about an axis parallel to the axis of advancement of the charge}

F27B 9/243 ・・・・{Endless-strand conveyer}

F27B 9/2453 ・・・・{Vibrating conveyer (shaker hearth furnace)}

F27B 9/2461 ・・・・{the charge being suspended from the conveyer}

F27B 9/2469 ・・・・{the conveyer being constituted by rollable bodies}

F27B 9/2476 ・・・・{the conveyer being constituted by air cushion}

F27B 9/26 ・・・on or in trucks, sleds, or containers

F27B 9/262 ・・・・{on or in trucks}

F27B 9/28 ・for treating continuous lengths of work

F27B 9/30 ・Details, accessories, or equipment peculiar to furnaces of these types

F27B 9/3005 ・・{arrangements for circulating gases}

F27B 9/3011 ・・・{arrangements for circulating gases transversally}

F27B 9/3044 ・・{Furnace regenerators}

F27B 9/3077 ・・{Arrangements for treating electronic components, e.g. semiconductors}

F27B 9/32 ・・Casings

F27B 9/34 ・・・Arrangements of linings

F27B 9/36 ・・Arrangements of heating devices

F27B 9/38 ・・Arrangements of devices for charging

F27B 9/39 ・・Arrangements of devices for discharging

F27B 9/40 ・・Arrangements of controlling or monitoring devices

F27B 11/00 Bell-type furnaces (for treating metal strips or wire C21D 9/663)

F27B 13/00 Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over tionary charge

F27B 13/02 ・of multiple-chamber type with permanent partitions; Combinations of furnaces

F27B 13/04 ・of single-chamber type with temporary partitions

F27B 13/06 ・Details, accessories, or equipment peculiar to furnaces of this type

F27B 13/08 ・・Casings

F27B 13/10 ・・・Arrangements of linings

F27B 13/12 ・・Arrangements of heating devices

F27B 13/14 ・・Arrangement of controlling, monitoring, alarm or like devices

F27B 14/00 Crucible or pot furnace

F27B 14/02 ・with tilting or rocking arrangements (F27B 14/04 takes precedence)

F27B 14/04 ・adapted for treating the charge in vacuum or special atmosphere

F27B 14/06 ・heated electrically, e.g. induction crucible furnaces with or without any other source of heat (F27B 14/04 takes precedence)

F27B 14/061 ・・{Induction furnaces}

F27B 14/063 ・・・{Skull melting type}

F27B 14/065 ・・・{Channel type}

F27B 14/08 ・Details peculiar to crucible or pot furnaces

F27B 14/0806 ・・{Charging or discharging devices}

F27B 14/10 ・・Crucibles

F27B 14/12 ・・・Covers therefor

F27B 14/14 ・・Arrangements of heating devices

F27B 14/143 ・・・{Heating of the crucible by convection of combustion gases}

F27B 14/20 ・・Arrangement of controlling, monitoring, alarm or like devices

F27B 15/00 Fluidised-bed furnaces; Other furnaces using or treating finely-divided materials in dispersion {(apparatus in general for carrying out chemical or physical processes in a fluidised bed reactor B01J 8/24 to B01J 8/44)}

F27B 15/003 ・{Cyclones or chain of cyclones}

F27B 15/006 ・{Equipment for treating dispersed material falling under gravity with ascending gases}

F27B 15/02 ・Details, accessories, or equipment peculiar to furnaces of these types

F27B 15/04 ・・Casings; Supports therefor

F27B 15/06 ・・・Arrangements of linings

F27B 15/08 ・・Arrangements of devices for charging

F27B 15/09 ・・Arrangements of devices for discharging

F27B 15/10 ・・Arrangements of air or gas supply devices

F27B 15/12 ・・Arrangements of dust collectors

F27B 15/14 ・・Arrangements of heating devices

F27B 15/16 ・・Arrangements of cooling devices

F27B 15/18 ・・Arrangements of controlling devices

F27B 15/20 ・・Arrangements of monitoring devices, of indicators, of alarm devices

F27B 17/00 Furnaces of a kind not covered by any preceding group (structural combinations of furnaces F27B 19/02)

F27B 17/0008 ・{Open field furnace for burning bricks}

F27B 17/0016 ・{Chamber type furnaces}

F27B 17/0025 ・・{Especially adapted for treating semiconductor wafers}

F27B 17/0033 ・・{the floor of the furnaces consisting of the support carrying the charge, e.g. car type furnaces}

F27B 17/0041 ・・{specially adapted for burning bricks or pottery (F27B 17/0033 takes precedence)}

F27B 17/005 ・・・{with cylindrical chambers}

F27B 17/0058 ・・・・{with superposed cylindrical chambers}

F27B 17/0066 ・・・{arrangement of the charge, e.g. bricks}

F27B 17/0075 ・・・{Heating devices therefor}

F27B 17/0083 ・・{with means for circulating the atmosphere}

F27B 17/02 ・specially designed for laboratory use

F27B 17/025 ・・{for dental workpieces}

F27B 19/00 Combinations of furnaces of kinds not covered by a single preceding main group

F27B 19/02 ・combined in one structure

F27B 19/04 ・arranged for associated working

F27B 21/00 Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction

F27B 21/02 ・Sintering grates or tables

F27B 21/04 ・Sintering pots or sintering pans

F27B 21/06 ・Endless-strand sintering machines

F27B 2003/00 Hearth-type furnaces, e.g. of reverberatory type (F27B 9/00, F27B 11/00, F27B 13/00, F27B 14/00, F27B 15/00, F27B 21/00 take precedence); Tank furnaces

F27B 2003/10 ・Details, accessories, or equipment peculiar to hearth-type furnaces

F27B 2003/12 ・・Working chambers or casings; Supports therefor

F27B 2003/125 ・・・Hearths

F27B 2003/16 ・・・Walls; Roofs

F27B 2003/165 ・・・・Roofs

F27B 2005/00 Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated (F27B 9/00 takes precedence)

F27B 2005/06 ・Details, accessories, or equipment peculiar to furnaces of these types

F27B 2005/062 ・・Cooling elements

F27B 2005/064 ・・・disposed in the furnace, around the chamber, e.g. coils

F27B 2005/066 ・・・disposed around the fan

F27B 2005/068 ・・・for external cooling

F27B 2005/14 ・・Arrangements of heating devices

F27B 2005/143 ・・・Heating rods disposed in the chamber

F27B 2005/146 ・・・・the heating rods being in the tubes which conduct the heating gases

F27B 2005/16 ・・Arrangements of air or gas supply devices

F27B 2005/161 ・・・Gas inflow or outflow

F27B 2005/162 ・・・・through closable or non-closable openings of the chamber walls

F27B 2005/163 ・・・・・Controlled openings, e.g. orientable

F27B 2005/164 ・・・・Air supply through a set of tubes with openings

F27B 2005/165 ・・・・・Controlled tubes, e.g. orientable or with closable openings

F27B 2005/166 ・・・Means to circulate the atmosphere

F27B 2005/167 ・・・・the atmosphere being recirculated through the treatment chamber by a turbine

F27B 2005/168 ・・・・・by more than one turbine

F27B 2005/169 ・・・・the atmosphere being continuously renewed by exterior means

F27B 2007/00 Rotary-drum furnaces, i.e. horizontal or slightly inclined

F27B 2007/005 ・for the treatment of slurries or wet materials

F27B 2007/02 ・of multiple-chamber or multiple-drum type

F27B 2007/022 ・・the drum having a non-uniform section along its length

F27B 2007/025 ・・with different chambers, e.g. treatment zones

F27B 2007/027 ・・with more than one drum

F27B 2007/04 ・・with longitudinal divisions

F27B 2007/041 ・・・Longitudinal tubes

F27B 2007/043 ・・・the partition being a cylinder, coaxial to the rotary drum, defining two chambers

F27B 2007/045 ・・・・the charge going in one direction in one chamber, then after a turn coming back in the other direction in the other chamber

F27B 2007/046 ・・・Radial partitions

F27B 2007/048 ・・・・defining an helical chamber

F27B 2007/14 ・with means for agitating or moving the charge

F27B 2007/16 ・・the means being fixed relatively to the drum, {e.g. composite means}(F27B 7/04 takes precedence)

F27B 2007/161 ・・・{the means comprising projections jutting out from the wall}

F27B 2007/162 ・・・・{the projections consisting of separate lifting elements, e.g. lifting shovels}

F27B 2007/163 ・・・・・using only a ring of lifting elements to lift the charge

F27B 2007/165 ・・・・forming a helical lifting projection

F27B 2007/167 ・・・{the means comprising partitions}

F27B 2007/168 ・・・・Annular partition

F27B 2007/20 ・Details, accessories, or equipment peculiar to rotary-drum furnaces

F27B 2007/2008 ・・Devices for reintroducing dust in the drum

F27B 2007/2091 ・・Means for eliminating compounds from gases by condensation, e.g. alkali metals

F27B 2007/22 ・・Rotary drums; Supports therefor

F27B 2007/2206 ・・・{Bearing rings}

F27B 2007/2213 ・・・・mounted floatingly on the drum

F27B 2007/222 ・・・・・the mounting comprising radially resilient elements, e.g. springs

F27B 2007/2226 ・・・・・the mounting comprising elements to maintain the ring between series of abutments

F27B 2007/2233 ・・・・the ring being fixed to the drum, e.g. welded

F27B 2007/2246 ・・・Support rollers

F27B 2007/2253 ・・・・mounted movable, e.g. resiliently on the ground

F27B 2007/226 ・・・・・constituted of series of two rollers mounted on tiltable support along the drum

F27B 2007/2266 ・・・・・the mounting allowing a movement of the rollers support in a horizontal plane

F27B 2007/2273 ・・・・with arrangements, e.g. rollers, to maintain the drum against longitudinal movement

F27B 2007/228 ・・・・comprising rollable bodies

F27B 2007/2286 ・・・・supporting the drum directly, without the use of a bearing ring

F27B 2007/2293 ・・・the furnace being suspended

F27B 2007/26 ・・Drives

F27B 2007/261 ・・・working with a ring embracing the drum

F27B 2007/262 ・・・・A gear ring combined with a dented wheel drive

F27B 2007/263 ・・・・A gear ring combined with a ram drive

F27B 2007/265 ・・・・the ring being mounted floatingly

F27B 2007/266 ・・・・the ring being a bearing ring

F27B 2007/267 ・・・・A gear ring combined with a chain drive

F27B 2007/268 ・・・Details of the motor or the pinions

F27B 2007/32 ・・Arrangement of devices for charging

F27B 2007/3205 ・・・{Charging}

F27B 2007/3211 ・・・・at the open end of the drum

F27B 2007/3217 ・・・・・axially, optionally at some distance in the kiln

F27B 2007/3223 ・・・・・・the charging device being movable axially, e.g. reciprocable

F27B 2007/3229 ・・・・・・via a centrifugal device

F27B 2007/3235 ・・・・・・the introducing device comprising a spray or a lance

F27B 2007/3241 ・・・・・・in the flame of the burner

F27B 2007/3247 ・・・・through a lateral opening in the drum

F27B 2007/3252 ・・・・・with lifting scoops attached to the drum

F27B 2007/3258 ・・・・at the open end of the drum

F27B 2007/3264 ・・・・・using special discharge means located around the discharge end, e.g. lifting scoops or a transversal annular partition

F27B 2007/327 ・・・・centrifugally through lateral openings in the drum

F27B 2007/3276 ・・・・with a collector means extending longitudinally into the drum

F27B 2007/3282 ・・・Details

F27B 2007/3288 ・・・・Sieves or grading means

F27B 2007/3294 ・・・・Means to fluidise the charge in the air

F27B 2007/36 ・・Arrangements of air or gas supply devices

F27B 2007/362 ・・・{Introducing gas into the drum axially or through the wall}

F27B 2007/365 ・・・・longitudinally

F27B 2007/367 ・・・・transversally through the wall of the drum

F27B 2009/00 Furnaces through which the charge is moved mechanically, e.g. of tunnel type (F27B 7/14 takes precedence); Similar furnaces in which the charge moves by gravity

F27B 2009/02 ・of multiple-track type; of multiple-chamber type; Combinations of furnaces

F27B 2009/026 ・・Two or more conveyers, e.g. mounted successively

F27B 2009/027 ・・・working in parallel

F27B 2009/12 ・with special arrangements for preheating or cooling the charge

F27B 2009/122 ・・Preheating

F27B 2009/124 ・・Cooling

F27B 2009/126 ・・・involving the circulation of cooling gases, e.g. air

F27B 2009/128 ・・・・the gases being further utilised as oxidants in the burners

F27B 2009/14 ・characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment (F27B 9/28 takes precedence; travelling or movable supports or containers for the charge F27D 3/12)

F27B 2009/20 ・・the charge moving in a substantially straight path {tunnel furnace}

F27B 2009/24 ・・・being carried by a conveyer {transport by conveyers in general B65G}

F27B 2009/243 ・・・・{Endless-strand conveyer}

F27B 2009/2438 ・・・・・with means to transfer the heat from the outcoming band to the incoming band

F27B 2009/2446 ・・・・・with means to control the tension of the band

F27B 2009/2484 ・・・・the conveyer being a helical device

F27B 2009/2492 ・・・・the conveyer being constituted by series of little rams or ratchets, moving the charge along

F27B 2009/26 ・・・on or in trucks, sleds, or containers

F27B 2009/262 ・・・・{on or in trucks}

F27B 2009/264 ・・・・・the truck carrying a partition

F27B 2009/266 ・・・・・the truck having conducts for guiding the oven atmosphere

F27B 2009/268 ・・・・・・through the structure of the car and through the charge

F27B 2009/30 ・Details, accessories, or equipment peculiar to furnaces of these types

F27B 2009/3005 ・・{arrangements for circulating gases}

F27B 2009/3011 ・・・{arrangements for circulating gases transversally}

F27B 2009/3016 ・・・・with arrangements to circulate gases through the charge

F27B 2009/3022 ・・・・with arrangements to maintain oxidising reducing or neutral zones

F27B 2009/3027 ・・・Use of registers, partitions

F27B 2009/3033 ・・・Fumes circulating in the same direction as the charge

F27B 2009/3038 ・・・Fumes or gases alternatively changing their longitudinal direction

F27B 2009/305 ・・Particular conformation of the furnace

F27B 2009/3055 ・・・Non-uniform section through the length of the furnace

F27B 2009/3061 ・・・Furnaces with longitudinal grooves

F27B 2009/3066 ・・Cooling the under-structure of the kiln, e.g. under the cars

F27B 2009/3072 ・・Balancing the pressure between the upper part and the lower part of the kiln, above and under the track

F27B 2009/3083 ・・Arrangements to handle skid marks

F27B 2009/3088 ・・Drying arrangements

F27B 2009/3094 ・・Means to store a part of the charge in the furnace

F27B 2009/36 ・・Arrangements of heating devices

F27B 2009/3607 ・・・Heaters located above the track of the charge

F27B 2009/3615 ・・・・Burner in the ceiling directed vertically downwards

F27B 2009/3623 ・・・Heaters located under the track

F27B 2009/363 ・・・・Burners in the hearth directed towards the ceiling

F27B 2009/3638 ・・・Heaters located above and under the track

F27B 2009/3646 ・・・Heating the ceiling or the walls for a reverberatory effect

F27B 2009/3653 ・・・Preheated fuel

F27B 2009/3661 ・・・・preheated with the exhaust gases

F27B 2009/3669 ・・・・preheated with the gases of the cooling zone

F27B 2009/3676 ・・・・preheated with the gases of the preheating zone

F27B 2009/3684 ・・・Combustion within a combustion chamber with outlets in the kiln chamber

F27B 2009/3692 ・・・The charge containing combustible materials

F27B 2009/38 ・・Arrangements of devices for charging

F27B 2009/382 ・・・Charging

F27B 2009/384 ・・・Discharging

F27B 2009/386 ・・・Lateral intake or outtake

F27B 2009/388 ・・・・Centrally in the lateral wall

F27B 2014/00 Crucible or pot furnace

F27B 2014/002 ・Smelting process, e.g. sequences to melt a specific material

F27B 2014/004 ・・Process involving a smelting step, e.g. vaporisation

F27B 2014/006 ・・involving a salt bath or help metal bath

F27B 2014/008 ・Continuous casting

F27B 2014/04 ・adapted for treating the charge in vacuum or special atmosphere

F27B 2014/045 ・・Vacuum

F27B 2014/06 ・heated electrically, e.g. induction crucible furnaces with or without any other source of heat (F27B 14/04 takes precedence)

F27B 2014/061 ・・{Induction furnaces}

F27B 2014/066 ・・・Construction of the induction furnace

F27B 2014/068 ・・with the use of an electrode producing a current in the melt

F27B 2014/08 ・Details peculiar to crucible or pot furnaces

F27B 2014/0806 ・・{Charging or discharging devices}

F27B 2014/0812 ・・・Continuously charging

F27B 2014/0818 ・・・Discharging

F27B 2014/0825 ・・Crucible or pot support

F27B 2014/0831 ・・・Support or means for the transport of crucibles

F27B 2014/0837 ・・Cooling arrangements

F27B 2014/0843 ・・Lining or casing

F27B 2014/085 ・・Preheating of the charge

F27B 2014/0856 ・・・Preheating of the crucible

F27B 2014/0862 ・・Flux guides

F27B 2014/0868 ・・Magnetic shields

F27B 2014/0875 ・・Two zones or chambers, e.g. one used for charging

F27B 2014/0881 ・・Two or more crucibles

F27B 2014/0887 ・・Movement of the melt

F27B 2014/0893 ・・Heat-conductive material disposed on the surface of the melt

F27B 2014/10 ・・Crucibles

F27B 2014/102 ・・・Form of the crucibles

F27B 2014/104 ・・・Crucible linings

F27B 2014/106 ・・・Ladles

F27B 2014/108 ・・・Cold crucibles (transparent to electromagnetic radiations)

F27B 2014/14 ・・Arrangements of heating devices

F27B 2014/146 ・・・Recuperation of lost heat, e.g. regenerators

F27B 2017/00 Furnaces of a kind not covered by any preceding group (structural combinations of furnaces F27B 19/02)

F27B 2017/0016 ・{Chamber type furnaces}

F27B 2017/0091 ・・Series of chambers, e.g. associated in their use