IPC-Stelle: C21B [Version 2017.01]

SymbolTypTitel
CSKCHEMISTRY; METALLURGY
C21USKMETALLURGY
C21KLMETALLURGY OF IRON
C21BUKLMANUFACTURE OF IRON OR STEEL (preliminary treatment of ferrous ores or scrap C22B 1/00)
C21B 3/00HGRGeneral features in the manufacture of pig-iron (mixers for pig-iron C21C 1/06) [1, 2006.01]
C21B 3/02UGR1
.by applying additives, e.g. fluxing agents [1, 2006.01]
C21B 3/04UGR1
.Recovery of by-products, e.g. slag [1, 2006.01]
C21B 3/06UGR2
. .Treatment of liquid slag [1, 2006.01]
C21B 3/08UGR3
. . .Cooling slag [1, 2006.01]
C21B 3/10UGR3
. . .Slag pots; Slag cars [1, 2006.01]
C21B 5/00HGRMaking pig-iron in the blast furnace [1, 2006.01]
C21B 5/02UGR1
.Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals [1, 2006.01]
C21B 5/04UGR1
.Making slag of special composition [1, 2006.01]
C21B 5/06UGR1
.using top gas in the blast furnace process [1, 2006.01]
C21B 7/00HGRBlast furnaces [1, 2006.01]
C21B 7/02UGR1
.Internal forms [1, 2006.01]
C21B 7/04UGR1
.with special refractories [1, 2006.01]
C21B 7/06UGR2
. .Linings for furnaces [1, 2006.01]
C21B 7/08UGR1
.Top armourings [1, 2006.01]
C21B 7/10UGR1
.Cooling; Devices therefor [1, 2006.01]
C21B 7/12UGR1
.Opening or sealing the tap holes [1, 2006.01]
C21B 7/14UGR1
.Discharging devices, e.g. for slag [1, 2006.01]
C21B 7/16UGR1
.Tuyères [1, 2006.01]
C21B 7/18UGR1
.Bell-and-hopper arrangements [1, 2006.01]
C21B 7/20UGR2
. .with appliances for distributing the burden [1, 2006.01]
C21B 7/22UGR1
.Dust arresters [1, 2006.01]
C21B 7/24UGR1
.Test rods or other checking devices [1, 2006.01]
C21B 9/00HGRStoves for heating the blast in blast furnaces [1, 2006.01]
C21B 9/02UGR1
.Brick hot-blast stoves [1, 2006.01]
C21B 9/04UGR2
. .with combustion shaft [1, 2006.01]
C21B 9/06UGR2
. .Linings [1, 2006.01]
C21B 9/08UGR1
.Iron hot-blast stoves [1, 2006.01]
C21B 9/10UGR1
.Other details, e.g. blast mains [1, 2006.01]
C21B 9/12UGR2
. .Hot-blast valves or slides for blast furnaces [1, 2006.01]
C21B 9/14UGR1
.Preheating the combustion air [1, 2006.01]
C21B 9/16UGR1
.Cooling or drying the hot-blast [1, 2006.01]
C21B 11/00HGRMaking pig-iron other than in blast furnaces [1, 2006.01]
C21B 11/02UGR1
.in low shaft furnaces [1, 2006.01]
C21B 11/06UGR1
.in rotary kilns [1, 2006.01]
C21B 11/08UGR1
.in hearth-type furnaces [1, 2006.01]
C21B 11/10UGR1
.in electric furnaces [1, 2006.01]
C21B 13/00HGRMaking spongy iron or liquid steel, by direct processes [1, 2006.01]
C21B 13/02UGR1
.in shaft furnaces [1, 2006.01]
C21B 13/04UGR1
.in retorts [1, 2006.01]
C21B 13/06UGR1
.in multi-storied furnaces [1, 2006.01]
C21B 13/08UGR1
.in rotary furnaces [1, 2006.01]
C21B 13/10UGR1
.in hearth-type furnaces [1, 2006.01]
C21B 13/12UGR1
.in electric furnaces [1, 2006.01]
C21B 13/14UGR1
.Multi-stage processes [1, 2006.01]
C21B 15/00HGROther processes for the manufacture of iron from iron compounds (by electrolysis C25C 1/06) [1, 2006.01]
C21B 15/02UGR1
.Metallothermic processes, e.g. thermit reduction [1, 2006.01]
C21B 15/04UGR1
.from iron carbonyl [1, 2006.01]