C21C1/00	7	Refining of pig-iron; Cast iron	C21C1/00	C21C1/00		1125
C21C1/02	8	Dephosphorising or desulfurising	C21C1/02	C21C1/02		2253
C21C1/025	9	{Agents used for dephosphorising or desulfurising}	C21C1/02	C21C1/02		783
C21C1/04	8	Removing impurities other than carbon, phosphorus or sulfur	C21C1/04	C21C1/04		463
C21C1/06	8	Constructional features of mixers for pig-iron	C21C1/06	C21C1/06		465
C21C1/08	8	Manufacture of cast-iron	C21C1/08	C21C1/08		1121
C21C1/10	8	Making spheroidal graphite cast-iron	C21C1/10	C21C1/10		1404
C21C1/105	9	{Nodularising additive agents}	C21C1/10	C21C1/10		788
C21C3/00	7	Manufacture of wrought-iron or wrought-steel	C21C3/00	C21C3/00		362
C21C5/00	7	Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel {or stainless steel}	C21C5/00	C21C5/00		222
C21C5/005	8	{Manufacture of stainless steel}	C21C5/00	C21C5/00		982
C21C5/02	8	Crucible furnace process {(C21C5/005 takes precedence)}	C21C5/02	C21C5/02		23
C21C5/04	8	Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel {(C21C5/005 takes precedence)}	C21C5/04	C21C5/04		634
C21C5/06	9	Processes yielding slags of special composition	C21C5/06	C21C5/06		45
C21C5/28	8	Manufacture of steel in the converter {(C21C5/005 takes precedence)}	C21C5/28	C21C5/28		3309
C21C5/285	9	{Plants therefor}	C21C5/28	C21C5/28		161
C21C5/30	9	Regulating or controlling the blowing	C21C5/30	C21C5/30		1212
C21C5/305	10	{Afterburning}	C21C5/30	C21C5/30		71
C21C5/32	10	Blowing from above (C21C5/35 takes precedence)	C21C5/32	C21C5/32		1337
C21C5/34	10	Blowing through the bath (C21C5/35 takes precedence)	C21C5/34	C21C5/34		914
C21C5/35	10	Blowing from above and through the bath	C21C5/35	C21C5/35		1249
C21C5/36	9	Processes yielding slags of special composition	C21C5/36	C21C5/36		1394
C21C2005/363	10	{Slag cements}	C21C5/36	C21C5/36		27
C21C2005/366	10	{Foam slags}	C21C5/36	C21C5/36		116
C21C5/38	9	Removal of waste gases or dust	C21C5/38	C21C5/38		830
C21C5/40	10	Offtakes or separating apparatus for converter waste gases or dust	C21C5/40	C21C5/40		1444
C21C5/42	9	Constructional features of converters	C21C5/42	C21C5/42		449
C21C5/44	10	Refractory linings	C21C5/44	C21C5/44		654
C21C5/441	11	{Equipment used for making or repairing linings}	C21C5/44	C21C5/44		350
C21C5/443	12	{Hot fettling; Flame gunning}	C21C5/44	C21C5/44		253
C21C5/445	11	{Lining or repairing the taphole}	C21C5/44	C21C5/44		139
C21C2005/446	12	{Dry linings}	C21C5/44	C21C5/44		30
C21C2005/448	11	{Lining wear indicators}	C21C5/44	C21C5/44		34
C21C5/46	10	Details or accessories	C21C5/46	C21C5/46		1035
C21C5/4606	11	{Lances or injectors}	C21C5/46	C21C5/46		1409
C21C5/4613	12	{Refractory coated lances; Immersion lances}	C21C5/46	C21C5/46		407
C21C5/462	12	{Means for handling, e.g. adjusting, changing, coupling}	C21C5/46	C21C5/46		627
C21C2005/4626	12	{Means for cooling, e.g. by gases, fluids or liquids}	C21C5/46	C21C5/46		132
C21C5/4633	11	{Supporting means}	C21C5/46	C21C5/46		303
C21C5/464	12	{Trunnion bearings}	C21C5/46	C21C5/46		67
C21C5/4646	11	{Cooling arrangements}	C21C5/46	C21C5/46		255
C21C5/4653	11	{Tapholes; Opening or plugging thereof}	C21C5/46	C21C5/46		800
C21C5/466	11	{Charging device for converters}	C21C5/46	C21C5/46		395
C21C2005/4666	12	{for charging with organic contaminated scrap}	C21C5/46	C21C5/46		48
C21C5/4673	11	{Measuring and sampling devices}	C21C5/46	C21C5/46		1276
C21C2005/468	12	{Means for determining the weight of the converter}	C21C5/46	C21C5/46		24
C21C5/4686	11	{Vehicles for supporting and transporting a converter vessel}	C21C5/46	C21C5/46		94
C21C5/4693	11	{Skull removal; Cleaning of the converter mouth}	C21C5/46	C21C5/46		214
C21C5/48	11	Bottoms or tuy&#233;res of converters	C21C5/48	C21C5/48		1131
C21C5/50	11	Tilting mechanisms for converters	C21C5/50	C21C5/50		424
C21C5/52	8	Manufacture of steel in electric furnaces {(C21C5/005 takes precedence)}	C21C5/52	C21C5/52		2046
C21C5/5205	9	{in a plasma heated furnace}	C21C5/52	C21C5/52		59
C21C5/5211	9	{in an alternating current [AC] electric arc furnace}	C21C5/52	C21C5/52		447
C21C5/5217	10	{equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the furnace}	C21C5/52	C21C5/52		701
C21C2005/5223	10	{with post-combustion}	C21C5/52	C21C5/52		11
C21C5/5229	9	{in a direct current [DC] electric arc furnace}	C21C5/52	C21C5/52		287
C21C2005/5235	10	{with bottom electrodes}	C21C5/52	C21C5/52		51
C21C5/5241	9	{in an inductively heated furnace}	C21C5/52	C21C5/52		401
C21C5/5247	10	{processing a moving metal stream while exposed to an electromagnetic field, e.g. in an electromagnetic counter current channel}	C21C5/52	C21C5/52		59
C21C5/5252	9	{in an electrically heated multi-chamber furnace, a combination of electric furnaces or an electric furnace arranged for associated working with a non electric furnace}	C21C5/52	C21C5/52		234
C21C2005/5258	9	{with crater formed by down-melting of scrap or charge through electrode or lance}	C21C5/52	C21C5/52		27
C21C5/5264	9	{Manufacture of alloyed steels including ferro-alloys}	C21C5/52	C21C5/52		330
C21C5/527	9	{Charging of the electric furnace}	C21C5/52	C21C5/52		821
C21C2005/5276	10	{with liquid or solid rest, e.g. pool, "sumpf"}	C21C5/52	C21C5/52		49
C21C2005/5282	10	{with organic contaminated scrap}	C21C5/52	C21C5/52		88
C21C2005/5288	9	{Measuring or sampling devices}	C21C5/52	C21C5/52		455
C21C5/5294	9	{General arrangement or layout of the electric melt shop}	C21C5/52	C21C5/52		191
C21C5/54	9	Processes yielding slags of special composition	C21C5/54	C21C5/54		420
C21C5/56	8	Manufacture of steel by other methods (making liquid steel by direct processes C21B13/00{; C21C5/005 takes precedence})	C21C5/56	C21C5/56		345
C21C5/562	9	{starting from scrap}	C21C5/56	C21C5/56		527
C21C5/565	10	{Preheating of scrap}	C21C5/56	C21C5/56		486
C21C5/567	9	{operating in a continuous way}	C21C5/56	C21C5/56		510
C21C7/00	7	Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00(treating molten metals during moulding B22D1/00, B22D27/00)	C21C7/00	C21C7/00		2400
C21C7/0006	8	{Adding metallic additives}	C21C7/00	C21C7/00		4457
C21C2007/0012	9	{Lead}	C21C7/00	C21C7/00		32
C21C2007/0018	9	{Boron}	C21C7/00	C21C7/00		81
C21C7/0025	8	{Adding carbon material}	C21C7/00	C21C7/00		1043
C21C2007/0031	9	{being plastics, organic compounds, polymers}	C21C7/00	C21C7/00		37
C21C7/0037	8	{by injecting powdered material}	C21C7/00	C21C7/00		928
C21C7/0043	9	{into the falling stream of molten metal}	C21C7/00	C21C7/00		99
C21C7/005	8	{using exothermic reaction compositions}	C21C7/00	C21C7/00		185
C21C7/0056	8	{using cored wires}	C21C7/00	C21C7/00		2243
C21C2007/0062	9	{with introduction of alloying or treating agents under a compacted form different from a wire, e.g. briquette, pellet}	C21C7/00	C21C7/00		138
C21C7/0068	8	{by introducing material into a current of streaming metal}	C21C7/00	C21C7/00		266
C21C7/0075	8	{Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle}	C21C7/00	C21C7/00		2926
C21C7/0081	8	{Treating and handling under pressure}	C21C7/00	C21C7/00		122
C21C7/0087	8	{Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal}	C21C7/00	C21C7/00		1063
C21C2007/0093	8	{Duplex process;  Two stage processes}	C21C7/00	C21C7/00		245
C21C7/04	8	Removing impurities by adding a treating agent	C21C7/04	C21C7/04		744
C21C7/06	9	Deoxidising, e.g. killing	C21C7/06	C21C7/06		6355
C21C7/064	9	Dephosphorising; Desulfurising	C21C7/064	C21C7/064		3747
C21C7/0645	10	{Agents used for dephosphorising or desulfurising}	C21C7/064	C21C7/064		1179
C21C7/068	9	Decarburising	C21C7/068	C21C7/068		1429
C21C7/0685	10	{of stainless steel}	C21C7/068	C21C7/068		505
C21C7/072	9	Treatment with gases (C21C7/06, C21C7/064, C21C7/068 take precedence)	C21C7/072	C21C7/072		2553
C21C7/076	9	Use of slags or fluxes as treating agents (C21C7/06, C21C7/064, C21C7/068 take precedence)	C21C7/076	C21C7/076		1996
C21C7/10	8	Handling in a vacuum	C21C7/10	C21C7/10		7346
C21C2100/00	7	Exhaust gas	CPCONLY	C21C2100/00		8
C21C2100/02	8	Treatment of the exhaust gas	CPCONLY	C21C2100/02		357
C21C2100/04	8	Recirculation of the exhaust gas	CPCONLY	C21C2100/04		90
C21C2100/06	8	Energy from waste gas used in other processes	CPCONLY	C21C2100/06		228
C21C2200/00	7	Recycling of waste material	CPCONLY	C21C2200/00		530
C21C2250/00	7	Specific additives; Means for adding material different from burners or lances	CPCONLY	C21C2250/00		20
C21C2250/02	8	Hot oxygen	CPCONLY	C21C2250/02		45
C21C2250/04	8	Liquid gas	CPCONLY	C21C2250/04		4
C21C2250/042	9	Liquid oxygen	CPCONLY	C21C2250/042		12
C21C2250/06	8	Hollow electrode	CPCONLY	C21C2250/06		24
C21C2250/08	8	Porous plug	CPCONLY	C21C2250/08		30
C21C2300/00	7	Process aspects	CPCONLY	C21C2300/00		10
C21C2300/02	8	Foam creation	CPCONLY	C21C2300/02		225
C21C2300/04	8	Avoiding foam formation	CPCONLY	C21C2300/04		65
C21C2300/06	8	Modeling of the process, e.g. for control purposes; CII	CPCONLY	C21C2300/06		529
C21C2300/08	8	Particular sequence of the process steps	CPCONLY	C21C2300/08		110
