|
C21B 3/00
|
General features in the manufacture of pig-iron |
|
C21B 3/02
|
General features in the manufacture of pig-iron by applying additives, e.g. fluxing agents |
|
C21B 3/04
|
Recovery of by-products, e.g. slag |
|
C21B 3/06
|
Treatment of liquid slag |
|
C21B 3/08
|
Cooling slag |
|
C21B 3/10
|
Slag potsSlag cars |
|
C21B 5/00
|
Making pig-iron in the blast furnace |
|
C21B 5/02
|
Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals |
|
C21B 5/04
|
Making slag of special composition |
|
C21B 5/06
|
Making pig-iron in the blast furnace using top gas in the blast furnace process |
|
C21B 7/00
|
Blast furnaces |
|
C21B 7/02
|
Internal forms |
|
C21B 7/04
|
Blast furnaces with special refractories |
|
C21B 7/06
|
Linings for furnaces |
|
C21B 7/08
|
Top armourings |
|
C21B 7/10
|
CoolingDevices therefor |
|
C21B 7/12
|
Opening or sealing the tap holes |
|
C21B 7/14
|
Discharging devices, e.g. for slag |
|
C21B 7/16
|
Tuyères |
|
C21B 7/18
|
Bell-and-hopper arrangements |
|
C21B 7/20
|
Bell-and-hopper arrangements with appliances for distributing the burden |
|
C21B 7/22
|
Dust arresters |
|
C21B 7/24
|
Test rods or other checking devices |
|
C21B 9/00
|
Stoves for heating the blast in blast furnaces |
|
C21B 9/02
|
Brick hot-blast stoves |
|
C21B 9/04
|
Brick hot-blast stoves with combustion shaft |
|
C21B 9/06
|
Linings |
|
C21B 9/08
|
Iron hot-blast stoves |
|
C21B 9/10
|
Other details, e.g. blast mains |
|
C21B 9/12
|
Hot-blast valves or slides for blast furnaces |
|
C21B 9/14
|
Preheating the combustion air |
|
C21B 9/16
|
Cooling or drying the hot-blast |
|
C21B 11/00
|
Making pig-iron other than in blast furnaces |
|
C21B 11/02
|
Making pig-iron other than in blast furnaces in low shaft furnaces |
|
C21B 11/06
|
Making pig-iron other than in blast furnaces in rotary kilns |
|
C21B 11/08
|
Making pig-iron other than in blast furnaces in hearth-type furnaces |
|
C21B 11/10
|
Making pig-iron other than in blast furnaces in electric furnaces |
|
C21B 13/00
|
Making spongy iron or liquid steel, by direct processes |
|
C21B 13/02
|
Making spongy iron or liquid steel, by direct processes in shaft furnaces |
|
C21B 13/04
|
Making spongy iron or liquid steel, by direct processes in retorts |
|
C21B 13/06
|
Making spongy iron or liquid steel, by direct processes in multi-storied furnaces |
|
C21B 13/08
|
Making spongy iron or liquid steel, by direct processes in rotary furnaces |
|
C21B 13/10
|
Making spongy iron or liquid steel, by direct processes in hearth-type furnaces |
|
C21B 13/12
|
Making spongy iron or liquid steel, by direct processes in electric furnaces |
|
C21B 13/14
|
Multi-stage processes |
|
C21B 15/00
|
Other processes for the manufacture of iron from iron compounds |
|
C21B 15/02
|
Metallothermic processes, e.g. thermit reduction |
|
C21B 15/04
|
Other processes for the manufacture of iron from iron compounds from iron carbonyl |
