F-Term-List

C21B7/00

AA00
BLAST FURNACES AND EQUIPMENT

AA01

AA02

AA03

AA05

AA06

AA07

. Furnace body installation and construction

. . Structures for operations outside the furnace

. . Structures for operations inside the furnace

. Gas recovery

. Control of gas pressure

. Control of gas flow and ventilation

C21B7/00,306

AB00
COLLECTION OF PRESSURE ENERGY AT THE FURNACE TOP

AB01

AB02

AB03

AB04

AB05

AB06

AB07

AB08

AB09

AB10

. Gas cleaning

. Heat exchange

. Gas passages

. . Control of pressure

. . Control of temperature

. . Control of flow rate

. . . Bypass valves

. Turbine control

. . Speed regulating valves and control

. . Control of the number of rotations

C21B7/00,307

AC00
VENTILATORS

AC01

AC02

AC03

AC05

AC06

AC07

AC08

AC10

. Control of ventilation

. . Addition of oxygen

. Production and feeding of reducing gas

. Powder blowing

. . Mixtures

. Liquid blowing

. Reducing gas blowing

. Nozzles and lances

C21B7/00,308-7/00,311

AD00
FUEL BLOWING APPARATUSES

AD01

AD02

AD03

AD05

AD06

AD08

AD09

AD10

. Blowing into the tuyere

. . Nozzles and lances

. . Nozzle and lance positions

. Feed lines

. . Mixing feed lines

. Monitoring and control

. . Detection

. . Control

C21B7/00,312

AE00
ACCESSORY APPARATUSES

AE01

AE02

AE04

AE05

AE06

AE07

AE09

AE10

. Gas cooling

. . Sprinkler cooling

. Gas ignition

. Gas recovery

. . Pipes

. . Valves

. Working beds and structures

. Gas production

C21B7/06-7/06,303

BA00
FURNACE LINING

BA01

BA02

BA03

BA04

BA05

BA06

BA07

BA08

BA09

BA10

. Furnace wall structure

. . Brick receivers and supports

. Bottom structure

. . Protection and cooling

. Refractories

. Removal of accretions

. Dismantling

. Operation and repair

. Drying

. Apparatuses and machinery

C21B7/10-7/10,305

CA00
COOLING AND APPARATUSES FOR COOLING

CA01

CA02

CA03

CA04

CA05

CA06

CA07

CA08

CA09

CA10

. Sprinkler cooling

. Cooling by blowing gas

. Structures for cooling furnace walls

. Staves and cooling plates

. . Pipe structure and arrangement

. Cooling trays, tubes, and blocks

. Bottom cooling structures

. Cooling circuits

. . Circulation of cooling water

. Repair, installation, and replacement

C21B7/12,302

DA00
RUNOUT AND TAPPING HOLES

DA01

DA02

DA03

DA04

DA05

DA06

DA07

DA08

DA09

DA10

. Rods

. . Feed

. . Replacement

. . Support

. . Fastening and coupling

. . Removal

. Pits

. . Cooling

. . Tip shape

. Oxygen holes

C21B7/12,304-7/12,306

DB00
MUD GUNS

DB01

DB02

DB03

DB04

DB05

DB06

DB07

DB08

DB09

DB10

. Transport of mud

. Feeding and charging of mud

. Mud gun structure

. . Nozzles

. . Plungers

. . Cooling

. Mud gun support

. Driving of mud guns

. . Rotation

. . Pressing

C21B7/14

EA00
DISCHARGING DEVICES

EA01

EA02

EA03

EA04

EA06

EA08

EA09

. Discharge of iron or slag

. Treatment of molten pig iron

. . ? [illegible]

. . Temperature maintenance

. Casing bed

. Pouring into melt-mixing container or bed

. Measuring/monitoring

C21B7/14,301

EB00
DISCHARGE HOLES

EB01

EB03

EB05

EB07

EB09

. Discharge operations

. Structure

. Auxiliary fittings

. Opening and closing

. Protection

C21B7/14,302-7/14,304

EC00
DISCHARGE DUCTS

EC01

EC02

EC03

EC04

EC05

EC06

EC07

EC08

EC09

EC10

. Structure

. . Cooling structures

. Detection and prevention of melt loss and damage

. Duct covers

. Moving, mounting, and dismounting of apparatuses

. Removal of residual pig iron

. Dismantling

. Installation and repair

. Drying

. Apparatuses and fixtures

C21B7/16

FA00
TUYERES

FA01

FA02

FA04

FA05

FA06

FA08

. Fastening and securing structures

. Position adjustment

. Fixtures and apparatuses peripheral to the tuyere

. . Cooling

. . Metals

. Refractories

C21B7/16,304

FB00
TUYERE SURFACE STRUCTURE

FB01

FB02

FB03

FB04

FB06

FB07

FB08

FB10

. Surface structure of tuyere

. . Internal layer

. . Plated layer

. . Refractory layer

. Auxiliary fixtures

. . Liners

. . Sleeves

. Tip and surface shape

C21B7/16,305

FC00
TUYERE STRUCTURE

FC01

FC02

FC03

FC04

FC05

FC06

FC08

. Shape of opening

. Internal shape

. Additional blowing-in opening

. Cooling

. . Water channels and pipes

. . Heating pipes

. Detection of damage

C21B7/16,306

FD00
BUSTLE PIPES AND HOT-BLAST BRANCH PIPES

FD01

FD02

FD03

FD04

FD05

FD07

FD08

. Blow pipes

. Blast and hot-blast branch pipes

. . Telescoping pipes

. . Air supply adjustment

. . Mounting, securing, and integrating

. Coupling and joint structures

. Auxiliary fittings and apparatuses

C21B7/18-7/18,306

GA00
BELL AND HOPPER DEVICES

GA01

GA02

GA03

GA04

GA05

GA06

GA07

GA08

GA09

GA10

. Charging conveyors

. Bells

. . Bell liners

. Bell hoppers

. Top bunkers and hoppers

. Rotary hoppers and chutes

. Uniform discharge pressure

. Gas seals

. Accessory apparatuses and fixtures

. Charging and control

C21B7/20-7/20,306

GB00
DISTRIBUTING AND CHARGING APPARATUSES

GB01

GB02

GB03

GB04

GB05

GB06

GB07

GB08

GB10

. Valves

. Replacement

. Chute-type charging apparatuses

. . Chutes

. . Rotating and driving of chutes

. Movable armoring

. . Position adjustment

. Metal receptor for arc and liner thereof

. Charging and control

C21B7/22-7/22,301

HA00
DUST COLLECTORS

HA01

HA02

HA03

HA04

HA05

HA06

HA07

HA08

HA09

HA10

. Discharge holes

. Container for melt

. Casting bed and ?[illegible]

. Arresting of exhaust gas

. . Dry methods

. . Wet methods

. . Cooling

. . Multi-layer structure

. Recovery and reuse

. Dust treatment

C21B7/24-7/24,306

KA00
TESTING RODS AND OTHER INSPECTION DEVICES

KA01

KA02

KA03

KA04

KA05

KA06

KA07

KA08

KA09

KA10

. Measurement of furnace conditions

. Properties and characteristic measurements of charge materials

. . Non-contact measurement

. . . Electromagnetic waves

. Raceway measurement

. Inspecition of coolers

. Inspection of walls, linings, and areas around the walls

. Measuring zondes

. . Sample collection

. . Accessory apparatuses

4K015	Blast furnaces
	C21B7/00 -9/16