C21B   3/00  \	0	0	4K012	C21B   3/00	26	Ŵ¤ˤŪħʺϧãã	General features in the manufacture of pig-iron (mixers for pig-iron C21C 1/06)
C21B   3/02  \	1	1	4K012	C21B   3/02	19	źʪ㡥Ϻޡä뤳Ȥˤ	by applying additives, e.g. fluxing agents
C21B   3/04  \	1	1	4K012	C21B   3/04	185	ʪ㡥饰β	Recovery of by-products, e.g. slag
C21B   3/06  \	2	2	4K012	C21B   3/06	434	ͻվ饰ν	Treatment of liquid slag
C21B   3/08  \	3	3	4K012	C21B   3/08	770	饰	Cooling slag
C21B   3/10  \	3	3	4K012	C21B   3/10	132	饰ݥåȡ饰	Slag pots; Slag cars
C21B   5/00  \	0	0	4K012	C21B   5/00	224	ϹϧˤŴ¤	Making pig-iron in the blast furnace
C21B   5/00 301 \	1	1	4K012	C21B   5/00	664	۹硤Ĵ	Grouping, adjustment or charging of materials
C21B   5/00 302 \	2	2	4K012	C21B   5/00	393		Properties of materials
C21B   5/00 303 \	2	2	4K012	C21B   5/00	52	ϧؤľ	Direct charging to charging
C21B   5/00 310 \	1	1	4K012	C21B   5/00	507	Ϲϧ	Control of blast furnace
C21B   5/00 311 \	2	2	4K012	C21B   5/00	640	Ѿ	Control of charging or deposition
C21B   5/00 312 \	3	3	4K012	C21B   5/00	83	ɽ̷	Surface shape control
C21B   5/00 313 \	3	3	4K012	C21B   5/00	94	ظظ	Layer thickness or layer thickness ratio control
C21B   5/00 314 \	2	2	4K012	C21B   5/00	108	Ͽߤ	Firing or blowing-out control
C21B   5/00 315 \	2	2	4K012	C21B   5/00	78	ϸ	Scale regulating  or sheltering control
C21B   5/00 316 \	2	2	4K012	C21B   5/00	312		Ventilation control
C21B   5/00 317 \	3	3	4K012	C21B   5/00	49	ʬ	Humidity control
C21B   5/00 318 \	3	3	4K012	C21B   5/00	158		Secondary materials blowing control
C21B   5/00 319 \	3	3	4K012	C21B   5/00	658	ǳ	Fuel blowing control
C21B   5/00 320 \	4	4	4K012	C21B   5/00	176	ǳʬ	Fuel content control
C21B   5/00 321 \	3	3	4K012	C21B   5/00	361	Ը	Reduced gas blowing control
C21B   5/00 322 \	3	3	4K012	C21B   5/00	57		Pressure control
C21B   5/00 323 \	2	2	4K012	C21B   5/00	286	ϧ	Furnace status control
C21B   5/00 324 \	3	3	4K012	C21B   5/00	62	ͻ	Fusion zone control
C21B   5/02  \	1	1	4K012	C21B   5/02	81	üŴ¤㡥źʪ㡥¾°λʪźäˤ	Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
C21B   5/04  \	1	1	4K012	C21B   5/04	42	üΥ饰¤	Making slag of special composition
C21B   5/06  \	1	1	4K012	C21B   5/06	117	ϹϧˡˤϧĺѤ	using top gas in the blast furnace process
C21B   7/00  \	0	0	4K015	C21B   7/00	173	Ϲϧ	Blast furnaces
C21B   7/00 301 \	1	1	4K015	C21B   7/00	82	ϧι¤	Furnace structure
C21B   7/00 302 \	2	2	4K015	C21B   7/00	80	Ŵ鹽¤	Shell structure
C21B   7/00 303 \	1	1	4K015	C21B   7/00	72	ϧ칽¤	Furnace bottom structure
C21B   7/00 304 \	1	1	4K015	C21B   7/00	193	ϧβ	Modification of furnace
C21B   7/00 305 \	1	1	4K015	C21B   7/00	38	֥ݥ	Breeder valve
C21B   7/00 306 \	1	1	4K015	C21B   7/00	292	ϧĺͥ륮ݲ	Top pressure energy collecting devices
C21B   7/00 307 \	1	1	4K015	C21B   7/00	184		Ventilation devices
C21B   7/00 308 \	1	1	4K015	C21B   7/00	147	ǳ	Fuel blowing devices
C21B   7/00 309 \	2	2	4K015	C21B   7/00	260	Υϥ	Nozzles or lances
C21B   7/00 310 \	2	2	4K015	C21B   7/00	128	饤	Sending lines
C21B   7/00 311 \	2	2	4K015	C21B   7/00	66	ƻ	Monitoring devices
C21B   7/00 312 \	1	1	4K015	C21B   7/00	201	°	Accessory devices
C21B   7/02  \	1	1	4K015	C21B   7/02	49		Internal forms
C21B   7/04  \	1	1	4K015	C21B   7/04	48	üѲʪĤ	with special refractories
C21B   7/06  \	2	2	4K015	C21B   7/06	245	ϧΤΥ饤˥	Linings for furnaces
C21B   7/06 301 \	3	3	4K015	C21B   7/06	140	ϧΥ饤˥	Furnace bottom lining
C21B   7/06 302 \	3	3	4K015	C21B   7/06	180	饤˥󥰤λܹ佤	Construction or repair of lining
C21B   7/06 303 \	4	4	4K015	C21B   7/06	125	ܹ佤Τε	Machinery/equipment for execution or repair
C21B   7/08  \	1	1	4K015	C21B   7/08	65	ϧĺ	Top armourings
C21B   7/10  \	1	1	4K015	C21B   7/10	282	ѡ	Cooling; Devices therefor
C21B   7/10 301 \	2	2	4K015	C21B   7/10	359	ơݥ	Staves
C21B   7/10 302 \	2	2	4K015	C21B   7/10	118		Cooling board
C21B   7/10 303 \	2	2	4K015	C21B   7/10	67	ϧ	Cooling of furnace bottom
C21B   7/10 304 \	2	2	4K015	C21B   7/10	134	Ѳϩ	Cooling circuit
C21B   7/10 305 \	2	2	4K015	C21B   7/10	167	֤佤դϼ费	Repair, installation or exchange of cooling devices
C21B   7/12  \	1	1	4K015	C21B   7/12	165	иΤ󹦤ޤ̩	Opening or sealing the tap holes
C21B   7/12 301 \	2	2	4K015	C21B   7/12	51	иΤ	Opening of tap holes
C21B   7/12 302 \	3	3	4K015	C21B   7/12	319	󹦤Τε	Machinery/equipment for tap holes
C21B   7/12 303 \	2	2	4K015	C21B   7/12	64	и̩	Sealing of tap holes
C21B   7/12 304 \	3	3	4K015	C21B   7/12	80	ޥĥɥؤΥޥĥɤζ	Supply of mud to mud gun
C21B   7/12 305 \	3	3	4K015	C21B   7/12	142	ޥĥɥ	Mud gun
C21B   7/12 306 \	3	3	4K015	C21B   7/12	71	ޥĥɥλٻϰư	Support or moving of mud gun
C21B   7/12 307 \	2	2	4K015	C21B   7/12	184	üʥޥĥɤλ	Use of special mud gun
C21B   7/12 308 \	2	2	4K015	C21B   7/12	24	豩	Residua exit tuyeres
C21B   7/12 309 \	2	2	4K015	C21B   7/12	29	󹦵̩ĵȤ߹礻	Combination of opening machine and sealing machine
C21B   7/14  \	1	1	4K015	C21B   7/14	251	ӽ֡㡥饰	Discharging devices, e.g. for slag
C21B   7/14 301 \	2	2	4K015	C21B   7/14	149		Pig exit openings
C21B   7/14 302 \	2	2	4K015	C21B   7/14	322	Сݤޤ	Pig exit chutes (including chute covers)
C21B   7/14 303 \	3	3	4K015	C21B   7/14	38		Cooling of bucket
C21B   7/14 304 \	3	3	4K015	C21B   7/14	293	¤ޤ佤	Building or repair of bucket
C21B   7/14 305 \	2	2	4K015	C21B   7/14	77		Tilting chutes
C21B   7/14 306 \	2	2	4K015	C21B   7/14	74	ʬΥ	Separation of cupola and residua
C21B   7/14 307 \	2	2	4K015	C21B   7/14	120	üʥ饤˥󥰤ͭӽ	Discharging devices having special lining
C21B   7/16  \	1	1	4K015	C21B   7/16	192		Tuy&egrave;res
C21B   7/16 301 \	2	2	4K015	C21B   7/16	64	μ괹	Replacement of tuyeres
C21B   7/16 302 \	2	2	4K015	C21B   7/16	16	佤	Repair of tuyeres
C21B   7/16 303 \	2	2	4K015	C21B   7/16	34	γ	Opening and closing of tuyere openings
C21B   7/16 304 \	2	2	4K015	C21B   7/16	125	ɽ̹¤ݥϥ饤ʡ	Surface structure, sleeve or liner of F3422
C21B   7/16 305 \	2	2	4K015	C21B   7/16	270	ι¤	Structure of tuyeres
C21B   7/16 306 \	2	2	4K015	C21B   7/16	174	ľǮٴ	Cyclic tubes or hot blast branch tubes
C21B   7/18  \	1	1	4K015	C21B   7/18	174	٥뤪ӥۥå	Bell-and-hopper arrangements
C21B   7/18 301 \	2	2	4K015	C21B   7/18	61	٥	Charging conveyors
C21B   7/18 302 \	2	2	4K015	C21B   7/18	200	٥ϥ٥ۥĥ	Bells or bell hoppers
C21B   7/18 303 \	2	2	4K015	C21B   7/18	203	ϧĺХ󥫡ϧĺۥĥۥĥ	Top bunkers, top hoppers or rotating hoppers
C21B   7/18 304 \	2	2	4K015	C21B   7/18	96	Ӱ	Discharging pressure averaging devices
C21B   7/18 305 \	2	2	4K015	C21B   7/18	102	ݥ	Gas seal
C21B   7/18 306 \	2	2	4K015	C21B   7/18	84		Control devices
C21B   7/20  \	2	2	4K015	C21B   7/20	242	ʪʬۤ뤿֤Ĥ	with appliances for distributing the burden
C21B   7/20 301 \	3	3	4K015	C21B   7/20	178	ݥȼ	Shooting type charging devices
C21B   7/20 302 \	4	4	4K015	C21B   7/20	115	ݥ	Shoot
C21B   7/20 303 \	4	4	4K015	C21B   7/20	174	ݥȤ󡦶ư	Turning/driving of shoot
C21B   7/20 304 \	3	3	4K015	C21B   7/20	138	ݥХ֥륢ݥ	Movable armour
C21B   7/20 305 \	3	3	4K015	C21B   7/20	61	мʪʶʪ饤ʡݤޤ	Ore receiving metal (including metal liner)
C21B   7/20 306 \	3	3	4K015	C21B   7/20	127		Control devices
C21B   7/22  \	1	1	4K015	C21B   7/22	430		Dust arresters
C21B   7/22 301 \	2	2	4K015	C21B   7/22	180	򾲤μ	Dust arresting at pig exit openings, pig exit chutes or pig beds
C21B   7/24  \	1	1	4K015	C21B   7/24	758	ޤ¾θ	Test rods or other checking devices
C21B   7/24 301 \	2	2	4K015	C21B   7/24	179	ʪοظɽ̷θ	Inspection of depth, layer thickness or surface shape of charging item
C21B   7/24 302 \	3	3	4K015	C21B   7/24	219	ܿץݥ	Non-contact type probes
C21B   7/24 303 \	2	2	4K015	C21B   7/24	283	Ϥǡϧɴ̷ץݥ	Full-length sonde, inserting sonde or furnace wall piercing probe
C21B   7/24 304 \	2	2	4K015	C21B   7/24	112	Τ»	Damage inspection of tuyeres or cooling body
C21B   7/24 305 \	2	2	4K015	C21B   7/24	200	˵ˤȾ֤θ	Inspection of operating status near tuyeres
C21B   7/24 306 \	2	2	4K015	C21B   7/24	184	ϧɡ饤˥դθ	Inspection of furnace wall, lining or wall attachment
C21B   9/00  \	0	0	4K015	C21B   9/00	74	ϹϧؤξǮ뤿Ǯϧ	Stoves for heating the blast in blast furnaces
C21B   9/00 101 \	1	1	4K015	C21B   9/00	101	Ǯϧ	Operation of stoves
C21B   9/00 301 \	2	2	4K015	C21B   9/00	117	ϧءӥϰĴ	Blasting, furnace switching, charging pressure, exhaust or pressure adjustment
C21B   9/00 302 \	2	2	4K015	C21B   9/00	67	ϧĴ	Adjustment of furnace temperature
C21B   9/00 303 \	2	2	4K015	C21B   9/00	24	Ȥγ	Start or stop of operation
C21B   9/00 304 \	2	2	4K015	C21B   9/00	31	ǮβüĴ	Humidification or humidity adjustment of hot air
C21B   9/02  \	1	1	4K015	C21B   9/02	150	Ǯϧ	Brick hot-blast stoves
C21B   9/04  \	2	2	4K015	C21B   9/04	36	ǳƥեȤĤ	with combustion shaft
C21B   9/06  \	2	2	4K015	C21B   9/06	61	饤˥	Linings
C21B   9/08  \	1	1	4K015	C21B   9/08	10	ݴɼǮϧ	Iron hot-blast stoves
C21B   9/10  \	1	1	4K015	C21B   9/10	86	¾κ㡥	Other details, e.g. blast mains
C21B   9/10 301 \	2	2	4K015	C21B   9/10	61	塤ϧɤι¤	Structure or cooling of mantle and furnace wall
C21B   9/10 302 \	2	2	4K015	C21B   9/10	78	Ω¤ϧλٻ	Repair, assembly, building or furnace support
C21B   9/10 303 \	2	2	4K015	C21B   9/10	53	Сݥʡ	Burner
C21B   9/10 304 \	2	2	4K015	C21B   9/10	45	¬ϸ	Measurement or detection devices
C21B   9/10 305 \	2	2	4K015	C21B   9/10	89	ɷϡ֡ɥեȴɷϡӥɷϧ	Blast piping, blast devices, draft piping, exhaust piping or furnace switching devices
C21B   9/12  \	2	2	4K015	C21B   9/12	68	ϹϧǮۤޤϥ饤	Hot-blast valves or slides for blast furnaces
C21B   9/14  \	1	1	4K015	C21B   9/14	61	ǳѶͽǮ	Preheating the combustion air
C21B   9/16  \	1	1	4K015	C21B   9/16	113	ǮѤޤϴ	Cooling or drying the hot-blast
C21B  11/00  \	0	0	4K012	C21B  11/00	1023	ϹϧˤʤŴ¤	Making pig-iron other than in blast furnaces
C21B  11/02  \	1	1	4K012	C21B  11/02	803	㥷եϧˤ	in low shaft furnaces
C21B  11/06  \	1	1	4K012	C21B  11/06	77	꡼ˤ	in rotary kilns
C21B  11/08  \	1	1	4K012	C21B  11/08	249	ϧϧˤ	in hearth-type furnaces
C21B  11/10  \	1	1	4K012	C21B  11/10	234	ŵϧˤ	in electric furnaces
C21B  13/00  \	0	0	4K012	C21B  13/00	1001	ľˡˤ볤ŴޤϹݤ¤	Making spongy iron or liquid steel, by direct processes
C21B  13/00 101 \	1	1	4K012	C21B  13/00	348	ήưϧˤ	In fluidised bed furnace
C21B  13/02  \	1	1	4K012	C21B  13/02	733	ľΩϧˤ	in shaft furnaces
C21B  13/04  \	1	1	4K012	C21B  13/04	43	ȥȤˤ	in retorts
C21B  13/06  \	1	1	4K012	C21B  13/06	82	¿ϧˤ	in multi-storied furnaces
C21B  13/08  \	1	1	4K012	C21B  13/08	320	žϧˤ	in rotary furnaces
C21B  13/10  \	1	1	4K012	C21B  13/10	750	ϧϧˤ	in hearth-type furnaces
C21B  13/12  \	1	1	4K012	C21B  13/12	189	ŵϧˤ	in electric furnaces
C21B  13/14  \	1	1	4K012	C21B  13/14	349	¿ʳˡ	Multi-stage processes
C21B  15/00  \	0	0	4K012	C21B  15/00	246	¾ˡˤŴʪŴˡŲˡˤΣãã	Other processes for the manufacture of iron from iron compounds (by electrolysis C25C 1/06)
C21B  15/02  \	1	1	4K012	C21B  15/02	53	ǮȿˤΡ㡥ƥߥåȴԸ	Metallothermic processes, e.g. thermit reduction
C21B  15/04  \	1	1	4K012	C21B  15/04	10	Ŵܥ˥뤫Τ	from iron carbonyl
