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| 4K063 | FURNACE DETAILS; PREHEATING; TREATMENTS OF DISCHARGES (FURNACE IN GENERAL 3) | |
| F27D7/00 -15/02@Z | ||
| F27D7/00-15/02@Z | AA | AA00 KIND OF FURNACE |
AA01 | AA02 | AA03 | AA04 | AA05 | AA06 | AA07 | AA08 | AA09 | |
| . characterised by heating purpose * | . . Smelting furnaces e.g. blast furnaces | . . Refining furnaces e.g. converters | . . Dissolving melting or molten metal holding furnaces | . . Heat treatment furnaces | . . Firing furnaces | . . Sintering furnaces | . . Rolling or forging furnaces e.g. heating furnaces or soaking pits | . . Drying furnaces | ||||
| AA11 | AA12 | AA13 | AA15 | AA16 | AA18 | AA19 | ||||||
| . characterised by other features than heating purposes * | . . Electric furnaces | . . Combustion furnaces | . . Atmospheric furnaces | . . . Vacuum furnaces | . . Rotary kilns (No additional classification in AA19.) | . . Tubular furnaces including furnace-core-tube types | ||||||
| BA | BA00 OBJECT TO BE HEATED IN FURNACE, E.G. CHARGE OR OBJECT TO BE TREATED |
BA01 | BA02 | BA03 | BA04 | BA05 | BA06 | BA07 | BA08 | BA09 | ||
| . characterised by materials * | . . Ferrous steels (Mere metals are additionally classified in BA03) | . . Nonferrous metals | . . Ceramics e.g. inorganic non-metals or ceramic-based products | . . . Pottery roof tiles or other tiles | . . . Glass quartz or slag products | . . . Cement clinkers or lime | . . . Refractories or heat-resistant materials | . . . Carbonaceous materials | ||||
| BA11 | BA12 | BA13 | BA15 | BA16 | ||||||||
| . characterised by others than materials * | . . Electric or electronic materials e.g. semiconductor devices | . . Municipal or industrial wastes e.g. scraps | . . Powder granules | . . Continuous articles e.g. strips | ||||||||
| CA | CA00 PURPOSE OR EFFECT |
CA01 | CA02 | CA03 | CA04 | CA05 | CA06 | CA07 | CA08 | CA09 | ||
| . Saving energy or improving heat efficiency | . Preventing pollution or improving working environments | . Improving yields or quality of objects to be heated | . Saving space or downsizing devices | . Maintenance-free e.g. prolonging refractory longevity | . Increasing device efficiency | . Multifunctioning devices | . Simplifying devices | . Automation or labour savings | ||||
| F27D7/00-7/06@Z | DA | DA00 FORMING, MAINTAINING, OR CIRCULATING AN ATMOSPHERE IN A HEATING CHAMBER |
DA01 | DA02 | DA03 | DA04 | DA05 | DA06 | DA07 | DA08 | DA09 | |
| . characterised by kinds of atmospheric gases * | . . Exothermic gases | . . Endothermic gases | . . Ammonia gases | . . Neutral inactive or nitrogen gases | . . Oxidising or oxygen gases | . . Reducing gases | . . Combustion gases | . . Halogen gases | ||||
| DA11 | DA12 | DA13 | DA14 | DA15 | DA16 | DA17 | DA19 | DA20 | ||||
| . Forming or modifying atmospheres | . . of atmospheric gases | . . . Gas supply systems | . . . . Openings for supply e.g. burners or nozzles | . . . Gas discharge | . . modifying atmospheric gases | . . . enriching or reducing oxygen | . . forming vacuum or degassing | . . breaking vacuum or supplying air | ||||
| DA21 | DA22 | DA23 | DA24 | DA26 | DA28 | |||||||
| . Maintaining atmosphere | . . Sealing | . . . Sealing at charging or discharging objects to be heated | . . removing furnace products e.g. evaporated materials | . Circulating atmosphere | . Agitating atmosphere | |||||||
| DA31 | DA32 | DA33 | DA34 | |||||||||
| . Detecting or controlling | . . of atmospheric temperature | . . of atmospheric pressure | . . of atmospheric constituents | |||||||||
| F27D9/00 | EA | EA00 COOLING FURNACE OR CHARGES THEREIN |
EA01 | EA02 | EA04 | EA05 | EA06 | EA08 | EA10 | |||
| . Devices for cooling furnace bodies | . . Staves cooling tables or jackets | . Devices for cooling inside of furnaces | . . blowing coolants | . . Cooling zones or chambers | . Cooling for emergency | . Detecting or controlling | ||||||
| F27D11/00-11/12 | FA | FA00 ARRANGEMENT OF AN ELEMENT FOR ELECTRIC HEATING IN OR ON A FURNACE |
FA01 | FA02 | FA03 | FA04 | FA05 | FA07 | FA08 | FA09 | FA10 | |
| . Resistance heating | . . Elements thereof or indirect heating | . . . metallic | . . . non-metallic | . . . coated | . . . rod-shaped | . . . spiral | . . . Corrugated sheet types | . . . tubular e.g. Tammann tubes | ||||
| FA13 | FA14 | FA15 | FA16 | FA18 | FA19 | |||||||
| . . . Lamp types e.g. incandescent lamps | . . . having protective tubes | . . . embedded | . . . dipped into objects to be heated | . . . Supporting or mounting device | . . . . Insulating or cooling thereof | |||||||
| FA22 | FA23 | FA25 | FA27 | FA29 | ||||||||
| . . conducting through objects to be heated or direct heating | . . . using consumable electrodes | . . Power sources and power-supply installations | . . Maintenance or securities | . . detecting or controlling | ||||||||
| FA31 | FA32 | FA33 | FA34 | FA35 | FA36 | FA37 | FA38 | FA39 | ||||
| . Induction heating | . . Inductors | . . . for applying heat locally | . . . for crucible type induction furnaces | . . . for groove type induction furnaces | . . . for indirect heating e.g. of containers | . . . movable e.g. for running or elevating | . . . for agitating molten metals | . . . for insulating or cooling | ||||
| FA42 | FA43 | FA44 | FA46 | FA48 | ||||||||
| . . Power sources and power-supply installations | . . . using high frequencies | . . . using low frequencies | . . Maintenance or securities | . . Detecting or controlling | ||||||||
| FA51 | FA52 | FA53 | FA54 | FA55 | FA56 | FA57 | FA58 | |||||
| . Heating by electric discharge | . . Electrodes or torches | . . . for direct-arc furnaces | . . . for indirect-arc furnaces | . . . for submerged-arc furnaces | . . . for plasma-arc furnaces | . . . for electron-beam furnaces | . . . for glow discharge | |||||
| FA63 | FA64 | FA66 | FA67 | FA68 | ||||||||
| . . . Consumable electrodes | . . . Furnace bottom electrodes | . . . Elevators | . . . Cooling devices | . . . sealing with furnaces | ||||||||
| FA72 | FA73 | FA74 | FA76 | FA78 | ||||||||
| . . Power sources or power supply equipment | . . . using direct currents | . . . using alternating currents | . . Maintenance or securities | . . Detecting or controlling | ||||||||
| FA81 | FA82 | |||||||||||
| . Electric heating other than resistance or induction heating or heating by electric discharge | . . Microwave heating | |||||||||||
| F27D13/00-13/00,102 | GA | GA00 DEVICE OR INSTALLATION FOR PREHEATING CHARGE |
GA01 | GA02 | GA03 | GA05 | GA06 | GA07 | GA09 | |||
| . characterised by preheat sources * | . . using heat of waste gas from furnaces | . . using preheating burners | . Preheating installations in furnace | . . preheating and heating alternately between multiple furnaces | . . Preheating zones | . Preheating installations in charging paths to furnaces | ||||||
| GA11 | GA12 | GA13 | GA14 | GA15 | GA16 | GA17 | GA19 | |||||
| . Preheating devices separated from furnaces | . . Cyclone types | . . . having multiple systems | . . . separating coarse and fine powders | . . . Gas ducts or raw material chutes | . . . Structures thereof | . . . . for preventing raw material adhesion | . . Calciners | |||||
| GA22 | GA25 | GA26 | GA27 | GA28 | ||||||||
| . . Grate types | . . Bucket types | . . . Sealings | . . . Structures thereof | . . . . insulating or cooling | ||||||||
| GA31 | GA33 | GA35 | GA36 | GA37 | GA39 | |||||||
| . Installations for supplying and distributing preheated gases | . Gas flow in charges | . Waste gas treatments after preheating | . . Waste heat recovering | . . Modifying treatment e.g. deodorisation or white smoke prevention | . Detecting or controlling | |||||||
| F27D15/00-15/02@Z | HA | HA00 TREATING MATERIAL DISCHARGED FROM FURNACE |
HA01 | HA02 | HA03 | HA04 | HA05 | HA06 | HA07 | HA08 | HA10 | |
| . Molten slag * | . . gas-borne | . . water-borne | . . . by spraying high-pressured water | . . . . using expanding or flat streams | . . . . preparing the slag containing less water | . . . . preparing hard or soft slags | . . . . filtering or recovering hair-fine or small-sized water-borne slag | . . . throwing the molten slag into tanks | ||||
| HA12 | HA13 | HA15 | HA16 | HA17 | HA19 | |||||||
| . . cooling while spreading the slag over treatment fields or ground | . . . throwing granulated steel slag there over | . . solidifying the slag in molten slag pans | . . . into small particles by throwing limestone or the like | . . . adding metallic or non-metallic oxides | . . granulating by rotating bodies | |||||||
| HA22 | HA23 | HA24 | ||||||||||
| . . solidifying by cooling on moving beds | . . . rolling slag into sheets | . . . cutting slag by dividing and cooling blades | ||||||||||
| HA31 | HA32 | HA33 | HA34 | HA35 | HA36 | HA38 | HA39 | HA40 | ||||
| . Lump slag treatment * | . . crushing | . . . using breakers | . . . using explosives | . . . applying dropping impacts of media | . . . using swing type coarse crushers | . . for adjusting or sorting particle sizes after crushing | . . Treatment of unconverted lime in slag | . . . promoting stability by steam | ||||
| HA41 | HA42 | HA43 | HA44 | HA45 | HA46 | HA47 | HA48 | HA49 | HA50 | |||
| . Clinkers treatment * | . . with grate-type cooling devices | . . . Structures for mounting grate plates | . . . All grate plates reciprocating | . . . Structures for preventing clinkers from depositing on grate beds | . . . Devices for supporting grate beam | . . . mounting cooling air adjusting members | . . . mounting easily exchangeable protective members | . . . using water spray | . . . using chain grates | |||
| HA52 | HA54 | HA55 | HA57 | |||||||||
| . . Cylinder types cooling devices | . . Secondary cooling devices | . . . combined with crushing devices | . . Combinations of two or more different types of cooling devices | |||||||||
| HA61 | HA62 | HA65 | HA66 | HA67 | HA68 | |||||||
| . Treatment of discharges other than slag or clinker * | . . Treatment of sintered ores | . Detecting or controlling treatment of furnace discharges | . . Temperatures of discharges | . . . by conveying speed | . . . by cooling media |