ClassID:

161490

F27D7/06 - CPC Classification

Classification description:

Forming, maintaining, or circulating atmospheres in heating chambers Forming or maintaining special atmospheres or vacuum within heating chambers

Sub-classes:
Recent Application in this class:
#1
20260132987
2026-05-14

FURNACE TUBE AND USING METHOD THEREOF

#2
20260071820
2026-03-12

LOW-COST HIGH-PURITY VACUUM PUMPS AND SYSTEMS

#3
20260040865
2026-02-05

HIGH-PRESSURE ANNEALING DEVICE

#4
20250334333
2025-10-30

SYSTEMS, DEVICES, AND METHODS FOR PURIFYING ATMOSPHERE IN A VACUUM FURNACE

#5
20250297806
2025-09-25

MULTI-SCALE TEST DEVICE FOR CRYSTALLIZATION PERFORMANCE OF HIGH-TEMPERATURE MELTS

#6
20250230981
2025-07-17

DENTAL FURNACE

#7
20250161960
2025-05-22

BLOWOFF NOZZLE

#8
20250129988
2025-04-24

METHOD OF HEAT-TREATING TUBING

#9
20250052501
2025-02-13

MELTING FURNACE PURGE SYSTEM AND METHOD

#10
20240418446
2024-12-19

SEALING STRUCTURES AND VACUUM FURNACES

#11
20240328714
2024-10-03

FURNACE TUBE STRUCTURE, FURNACE REAR SEALING DEVICE, AND FURNACE

#12
20240280322
2024-08-22

APPARATUS AND METHOD FOR METALLURGICAL HEAT-TREATMENT

#13
20240263881
2024-08-08

METHOD FOR HEATING A FURNACE

#14
20240230232
2024-07-11

GAS CONTROL SYSTEM FOR REFLOW FURNACE AND REFLOW FURNACE

#15
20240227022
2024-07-11

APPARATUS AND METHOD TO MANAGE TEMPERATURE AND STRESS IN A PART DURING ADDITIVE MANUFACTURING

#16
20240110270
2024-04-04

Method for heat treating components

#17
20230395405
2023-12-07

Substrate processing apparatus for processing substrates

#18
20230378427
2023-11-23

Furnace atmosphere control for lithium-ion battery cathode material production

#19
20230304740
2023-09-28

APPARATUS FOR HEATING STEEL PRODUCTS

#20
20230257302
2023-08-17

PARALLEL-FLOW REGENERATIVE SHAFT KILN AND METHOD FOR CALCINING CARBONATE ROCK

#21
20230250504
2023-08-10

CONTROLLED THERMAL COEFFICIENT PRODUCT SYSTEM AND METHOD

#22
20230223283
2023-07-13

HEATING APPARATUS FOR A SEMICONDUCTOR DEVICE, HEATING SYSTEM, AND SEMICONDUCTOR DEVICE

#23
20230204290
2023-06-29

HIGH PRESSURE HEAT TREATMENT APPARATUS

#24
20230194174
2023-06-22

GAS MANAGEMENT ASSEMBLY FOR HIGH PRESSURE HEAT-TREATMENT APPARATUS

#25
20230152038
2023-05-18

HEAT TREATMENT APPARATUS AND HEAT TREATMENT METHOD

#26
20230111491
2023-04-13

SYSTEM FOR TREATING TIN SMELTING INTERMEDIATE MATERIALS AND METHOD FOR TREATING SAME

#27
20230105323
2023-04-06

High Pressure Furnace and Methods of Use

#28
20230083264
2023-03-16

DECARBURIZATION END POINT DETERMINATION METHOD, DECARBURIZATION END POINT DETERMINATION DEVICE, SECONDARY REFINING OPERATION METHOD FOR STEEL MAKING, AND METHOD FOR PRODUCING MOLTEN STEEL

#29
20230078751
2023-03-16

VOLUME HEAT TREATMENT METHOD AND RELATED SYSTEM

#30
20220373261
2022-11-24

Melting furnace purge system and method

#31
20220359858
2022-11-10

Furnace atmosphere control for lithium-ion battery cathode material production

#32
20220316802
2022-10-06

Vacuum forming method

#33
20220276006
2022-09-01

Systems and methods for vacuum furnace post-processing

#34
20220259685
2022-08-18

SEALING A REDUCTION ASSEMBLY

#35
20220228068
2022-07-21

PLASTIC PYROLYSIS/EMULSIFICATION SYSTEM

#36
20220154300
2022-05-19

Sensing and control of position of an electrical discharge

#37
20220090230
2022-03-24

Steelmaking furnace with humidity control device

#38
20220074664
2022-03-10

Rotary tube kiln

#39
20220065533
2022-03-03

SYSTEMS, DEVICES, AND METHODS FOR PURIFYING ATMOSPHERE IN A VACUUM FURNACE

#40
20220033930
2022-02-03

Annealing line for a steel strip

#41
20210381769
2021-12-09

Carbon fiber, carbon composite and furnace purification by hydrogen reduction followed by thermal heat treatment

#42
20210348760
2021-11-11

HOT SURFACE IGNITERS AND METHODS OF MAKING SAME

#43
20210320020
2021-10-14

Substrate processing apparatus for processing substrates

#44
20210302100
2021-09-30

High-temperature all-metal induction furnace, intended to melt samples of minerals and/or rocks for extracting gases under ultra-high vacuum

#45
20210183669
2021-06-17

Heating treatment apparatus and heating treatment method

#46
20210151335
2021-05-20

Light irradiation type thermal process apparatus using a gas ring

#47
20210115549
2021-04-22

Nitriding apparatus for manufacturing a grain-oriented electrical steel sheet

#48
20210108856
2021-04-15

SYSTEMS AND METHODS FOR REDUCING ARCING IN VACUUM OR PARTIAL VACUUM FURNACE USING DC POWER

#49
20210002739
2021-01-07

Controlled thermal coefficient product system and method

#50
20200363129
2020-11-19

Method for treating pourable, inorganic grain, and rotary tube suitable for performing the method

#51
20200355731
2020-11-12

Sensing and control of position of an electrical discharge

#52
20200310183
2020-10-01

Organic film forming apparatus

#53
20200300546
2020-09-24

Vacuum forming method

#54
20200283328
2020-09-10

Glass body manufacturing apparatus, glass body manufacturing method, soot conveying mechanism, and soot heating mechanism

#55
20200239980
2020-07-30

DC ARC FURNACE FOR WASTE MELTING AND GASIFICATION

#56
20200227293
2020-07-16

Processing apparatus

#57
20200216939
2020-07-09

METHOD FOR HEAT TREATING COMPONENTS

#58
20200141652
2020-05-07

Gas phase type heating method and gas phase type heating device

#59
20200135512
2020-04-30

Substrate processing apparatus for processing substrates

#60
20200122235
2020-04-23

Pressing arrangement

#61
20200055739
2020-02-20

Method for producing lithium hydroxide anhydride and rotary kiln to be used therefor

#62
20200025446
2020-01-23

Hot isostatic pressing device

#63
20190293354
2019-09-26

Carbon fiber, carbon composite and furnace purification by hydrogen reduction followed by thermal heat treatment

#64
20190219615
2019-07-18

Sensing and control of position of an electrical discharge

#65
20190218642
2019-07-18

Thermal reduction apparatus for metal production, gate device, condensing system, and control method thereof

#66
20190218147
2019-07-18

Method of producing fired ceramic article and method of firing ceramic green body

#67
20190170442
2019-06-06

Pressure-Regulated Melting of Solids with a Melting Device

#68
20190170441
2019-06-06

Pressure-Regulated Melting of Solids with Warm Fluids

#69
20190170440
2019-06-06

Pressure-Regulated Melting of Solids

#70
20190160529
2019-05-30

Furnace For Sintering Printed Objects

#71
20190107328
2019-04-11

Simplified and improved thermal efficiency vaccum furnace hot zone with prefabricated insulation assembly

#72
20190096716
2019-03-28

Heating treatment apparatus and heating treatment method

#73
20190024990
2019-01-24

HEAT EXCHANGER HAVING ENHANCED CORROSION RESISTANCE

#74
20190024979
2019-01-24

Door structure of heat treatment furnace

#75
20190003026
2019-01-03

Method for heat treating components

#76
20180363094
2018-12-20

Method and device for reaction control

#77
20180347906
2018-12-06

Heating apparatus for vertically and helically conveying workpiece

#78
20180244584
2018-08-30

Inert gas substituting method and ceramic structure manufacturing method using inert gas substituting method

#79
20180227989
2018-08-09

Alloy melting and holding furnace

#80
20180209740
2018-07-26

Laminar flow shrink oven

#81
20180209051
2018-07-26

METHOD AND APPARATUS PROVIDING HIGH PURITY DIATOMIC MOLECULES OF HYDROGEN ISOTOPES

#82
20180195721
2018-07-12

Hot surface igniters and methods of making same

#83
20180172353
2018-06-21

Melting plant and method

#84
20180149430
2018-05-31

Furnace for dental prosthesis or partial dental prosthesis

#85
20180142339
2018-05-24

Method and device for reaction control

#86
20180120029
2018-05-03

Systems and methods for controlling a vacuum arc remelting furnace based on power input

#87
20180117671
2018-05-03

Melting device

#88
20180102264
2018-04-12

Thermal treatment system with collector device

#89
20180080714
2018-03-22

High temperature vacuum furnace hot zone with improved thermal efficiency

#90
20180073110
2018-03-15

Method for making metal-carbon composites and compositions

#91
20180066891
2018-03-08

Precision dual annealing apparatus

#92
20180051356
2018-02-22

METHOD OF PRODUCING GALVANNEALED STEEL SHEET

#93
20180016652
2018-01-18

Heat treatment apparatus

#94
20180010855
2018-01-11

Inline resistive heating system and method for thermal treatment of continuous conductive products

#95
20180003441
2018-01-04

METHOD FOR MANUFACTURING A NICKEL-TITANIUM ALLOY USING A HIGH VACUUM CRUCIBLELESS LEVITATION MELTING PROCESS

#96
20180002782
2018-01-04

DEVICE AND METHOD FOR MANUFACTURING AN ACTIVE ALLOY

#97
20170363356
2017-12-21

Apparatus For Rapid Cooling Of Substrates Utilizing A Flat Plate And Cooling Channels

#98
20170363355
2017-12-21

Vacuum forming method

#99
20170353995
2017-12-07

Heater unit and carburizing furnace

#100
20170342535
2017-11-30

POWDER PROCESSING SYSTEM AND METHOD FOR POWDER HEAT TREATMENT

#101
20170320131
2017-11-09

Unit Cell Titanium Casting

#102
20170318627
2017-11-02

Method, system, and apparatus for controlling a temperature of a substrate in a plasma processing chamber

#103
20170292170
2017-10-12

CONTROLLING AND OPTIMISING FURNACE ATMOSPHERES FOR STAINLESS STEEL HEAT TREATMENT

#104
20170282271
2017-10-05

BRAZING FURNACE AND ALUMINUM-MATERIAL BRAZING METHOD

#105
20170261262
2017-09-14

Pot furnace for calcining petroleum coke at low temperature

#106
20170254592
2017-09-07

THERMAL TREATMENT DEVICE

#107
20170239633
2017-08-24

Hydrogen, lithium, and lithium hydride production

#108
20170226622
2017-08-10

Method for manufacturing grain-oriented electrical steel sheet, and nitriding apparatus

#109
20170211884
2017-07-27

NON-OXIDATION HEAT TREATMENT SYSTEM HAVING INTERNAL RX GAS GENERATOR

#110
20170191758
2017-07-06

POWDER SINTERING DEVICE

#111
20170167791
2017-06-15

POWDER SINTERING SYSTEM

#112
20170160012
2017-06-08

SEMICONDUCTOR ANNEALING APPARATUS

#113
20170131031
2017-05-11

Combined fan and ejector cooling

#114
20170089641
2017-03-30

Hinged baffle for autoclave that deploys at a target temperature during a run cycle

#115
20170077396
2017-03-16

Manufacturing method of semiconductor device having magnetic substance film

#116
20170074588
2017-03-16

VACUUM FURNACE WITH HEATING VESSEL IN MULTIPLE ORIENTATIONS AND METHOD THEREOF

#117
20170072461
2017-03-16

LASER SENSOR FOR MELT CONTROL OF HEARTH FURNACES AND THE LIKE

#118
20170022596
2017-01-26

Carburizing device

#119
20170002466
2017-01-05

CVI densification installation including a high capacity preheating zone

#120
20170001239
2017-01-05

Vacuum Melting and Casting Apparatus

#121
20160375487
2016-12-29

Automated bi-casting

#122
20160370116
2016-12-22

PROCESS FOR HEAT TREATING A SAPPHIRE COMPONENT

#123
20160369427
2016-12-22

HORIZONTAL HEAT TREATMENT APPARATUS AND CARBON FIBER PRODUCTION METHOD USING HORIZONTAL HEAT TREATMENT APPARATUS

#124
20160363349
2016-12-15

METHOD FOR PRODUCING AN ELEMENT FOR ABSORBING SOLAR RADIATION FOR A CONCENTRATING SOLAR THERMAL POWER PLANT, ELEMENT FOR ABSORBING SOLAR RADIATION

#125
20160348976
2016-12-01

Airflow in autoclaves

#126
20160348203
2016-12-01

Controlled thermal coefficient product system and method

#127
20160348199
2016-12-01

Pneumatic ore charging

#128
20160341477
2016-11-24

Methods for fabricating porous media with controllable characteristics

#129
20160290721
2016-10-06

Continuous annealing furnace for annealing steel strip, method for continuously annealing steel strip, continuous hot-dip galvanizing facility, and method for manufacturing hot-dip galvanized steel strip

#130
20160273065
2016-09-22

Process gas preparation apparatus for an industrial furnace system and an industrial furnace system for gas carburizing and hardening of metal workpieces utilizing same

#131
20160250682
2016-09-01

Metal forming apparatus

#132
20160244371
2016-08-25

Thermal insulator and method of manufacturing the same

#133
20160222507
2016-08-04

Apparatus and method for purging gaseous compounds

#134
20160193653
2016-07-07

Forming a Metal Component

#135
20160177418
2016-06-23

Refining device and refining method for titanium scraps and sponge titanium using deoxidising gas

#136
20160160318
2016-06-09

System and method for adding molten lithium to a molten aluminium melt

#137
20160146537
2016-05-26

Installation for treating a material

#138
20160109125
2016-04-21

Hot surface igniters and methods of making same

#139
20160102914
2016-04-14

Modular heat treatment system

#140
20160102377
2016-04-14

Device for individual quench hardening of technical equipment components

#141
20160079454
2016-03-17

FORMATION OF A I-III-VI2 SEMICONDUCTOR LAYER BY HEAT TREATMENT AND CHALCOGENIZATION OF AN I-III METALLIC PRECURSOR

#142
20160069615
2016-03-10

Thermal reduction apparatus for metal production, gate device, condensing system, and control method thereof

#143
20160067807
2016-03-10

DUAL ZONE FURNACE

#144
20160061526
2016-03-03

Magnetic annealing apparatus

#145
20160061525
2016-03-03

Magnetic annealing apparatus and magnetic annealing method

#146
20160057812
2016-02-25

Vacuum processing device

#147
20160056059
2016-02-25

COMPONENT FOR SEMICONDUCTOR PROCESS CHAMBER HAVING SURFACE TREATMENT TO REDUCE PARTICLE EMISSION

#148
20160053350
2016-02-25

MOLTEN MANGANESE-CONTAINING STEEL PRODUCTION METHOD, HOLDING FURNACE, AND MOLTEN MANGANESE-CONTAINING STEEL PRODUCTION EQUIPMENT USING HOLDING FURNACE

#149
20160051350
2016-02-25

Arrangement having at least one workpiece for sintering

#150
20160042984
2016-02-11

Substrate heating device, substrate heating method and computer-readable storage medium

#151
20160039163
2016-02-11

Hot isostatic pressing device

#152
20150334778
2015-11-19

High temperature vacuum furnace heater element support assembly

#153
20150322539
2015-11-12

METHOD FOR ADJUSTING FURNACE ATMOSPHERE IN CONTINUOUS ANNEALING FURNACE (AS AMENDED)

#154
20150299909
2015-10-22

Horizontal heat treatment device

#155
20150251961
2015-09-10

Critical chamber component surface improvement to reduce chamber particles

#156
20150249025
2015-09-03

Semiconductor device manufacturing apparatus

#157
20150247671
2015-09-03

System for maintaining interior volume integrity in an induction vacuum furnace and method of making same

#158
20150232964
2015-08-20

Method of purifying sodium metal

#159
20150226499
2015-08-13

Heat Exchanger Having Enhanced Corrosion Resistance

#160
20150218057
2015-08-06

Ceramic article with reduced surface defect density

#161
20150206781
2015-07-23

Device and method for heat treating an object

#162
20150184941
2015-07-02

METHOD FOR PRODUCING CARBON FIBER BUNDLE AND HEATING FURNACE FOR CARBON FIBER PRECURSOR FIBER BUNDLE

#163
20150147227
2015-05-28

Alloy melting and holding furnace

#164
20150140218
2015-05-21

Continuous annealing furnace for annealing steel strip, method for continuously annealing steel strip, continuous hot-dip galvanizing facility, and method for manufacturing hot-dip galvanized steel strip

#165
20150110705
2015-04-23

Carbon fiber precursor acrylic fiber bundle, method for thermally oxidizing part thereof, thermal oxidation oven, and process for producing carbon fiber bundle

#166
20150102538
2015-04-16

METHOD FOR HEAT TREATMENT, HEAT TREATMENT APPARATUS, AND HEAT TREATMENT SYSTEM

#167
20150090182
2015-04-02

Continuous galvanizing line having an annealing furnace

#168
20150083707
2015-03-26

Process for fabricating inductive heated solder cartridge

#169
20150079528
2015-03-19

Pressing arrangement for treating substances

#170
20150072297
2015-03-12

Method for Heating an Industrial Furnace and a Heating Apparatus for Carrying Out Said Method

#171
20150049781
2015-02-19

Center heating element for a vacuum heat treating furnace

#172
20150044622
2015-02-12

Heater moving type substrate processing apparatus

#173
20150036714
2015-02-05

Furnace combustion tube and mounting assembly

#174
20150036713
2015-02-05

Combustion tube and seal assembly

#175
20150034829
2015-02-05

Intrinsic reflectors of scintillation detector elements and formation process of intrinsic reflectors

#176
20150023383
2015-01-22

Cylindrical combustion tube and mounting assembly

#177
20150010877
2015-01-08

HIGH PRESSURE CONTAINER

#178
20140357893
2014-12-04

RECOVERY FROM ROCK STRUCTURES AND CHEMICAL PRODUCTION USING HIGH ENTHALPY COLLIDING AND REVERBERATING SHOCK PRESSURE WAVES

#179
20140342297
2014-11-20

Nozzle Device for a Furnace for Heat Treating a Steel Flat Product and Furnace Equipped with such a Nozzle Device

#180
20140333015
2014-11-13

BELL-TYPE FURNACE WITH A HEAT DISPENSING DEVICE POSITIONED WITHIN A PROTECTIVE HOOD, IN PARTICULAR FED BY AN ENERGY SOURCE EXTERNAL TO THE FURNACE CHAMBER, FOR DISPENSING HEAT TO ANNEALING GAS

#181
20140322632
2014-10-30

ELECTRODE FOR ELECTROCHEMISTRY AND MANUFACTURING METHOD FOR THE SAME

#182
20140308621
2014-10-16

SINTERING APPARATUS

#183
20140295367
2014-10-02

Combustion apparatus, and heating furnace using same

#184
20140294655
2014-10-02

Method and device for preparing a sintered Nd—Fe—B permanent magnet

#185
20140272745
2014-09-18

Combined fan and ejector cooling

#186
20140209267
2014-07-31

Arc melting and tilt casting apparatus

#187
20140203483
2014-07-24

Vacuum refining furnace

#188
20140203482
2014-07-24

Apparatus and method for the treatment of a flat steel product, taking place in throughput

#189
20140198819
2014-07-17

METHOD OF RECOVERING ENERGY FROM AN ELECTRIC INDUCTION FURNACE EXHAUST GAS IN THE GASIFICATION OF FEED FUEL TO EXHAUST GAS

#190
20140193762
2014-07-10

HEAT TREATMENT FURNACE

#191
20140151943
2014-06-05

VALUABLE METAL RECOVERY APPARATUS

#192
20140151941
2014-06-05

Hood-type annealing furnace and method for operating the same

#193
20140134555
2014-05-15

THERMAL ISOLATION WALLS IN A ROTARY FURNACE APPLICATION

#194
20140127637
2014-05-08

Outer cooling loop

#195
20140127635
2014-05-08

Vacuum heat treatment apparatus

#196
20140127112
2014-05-08

Method for making porous acicular mullite bodies

#197
20140123892
2014-05-08

Arrangement for manufacturing crystalline silicon ingots

#198
20140106287
2014-04-17

Industrial heat treating furnace that uses a protective gas

#199
20140102593
2014-04-17

Method of heat treatment and the directions for use of furnace of heat treatment

#200
20140083523
2014-03-27

Apparatus and method for purging gaseous compounds

#201
20140079376
2014-03-20

Thermal reactor with improved gas flow distribution

#202
20140072924
2014-03-13

Heat treatment apparatus

#203
20140072710
2014-03-13

Method for infiltrating a porous material with a second material

#204
20140030667
2014-01-30

Welding furnace and viewport assembly

#205
20140020729
2014-01-23

Thermoelectric conversion element, method for manufacturing same, and communication device

#206
20140011151
2014-01-09

Shuttle kiln for firing ceramic porous bodies

#207
20140004473
2014-01-02

METHOD FOR CALCINING ELECTRODE MATERIALS USING A ROTARY KILN

#208
20140001397
2014-01-02

METAL-POLYMER COMPLEX FILM FOR INDUCTOR AND METHOD FOR MANUFACTURING THE SAME

#209
20130341840
2013-12-26

MOLTEN METAL FURNACE

#210
20130337395
2013-12-19

Pressing arrangement

#211
20130337394
2013-12-19

HEAT TREATMENT APPARATUS

#212
20130273251
2013-10-17

Continuous annealing method and a manufacturing method of hot-dip galvanized steel strips

#213
20130266801
2013-10-10

THERMAL INSULATOR AND METHOD OF MANUFACTURING THE SAME

#214
20130247618
2013-09-26

Continuous casting method of silicon ingot

#215
20130240033
2013-09-19

METHOD FOR PRODUCING COUNTER ELECTRODE BASED ON ELECTROPHORETIC DEPOSITION OF GRAPHENE, COUNTER ELECTRODE PRODUCED BY THE METHOD AND DYE-SENSITIZED SOLAR CELL INCLUDING THE COUNTER ELECTRODE

#216
20130216783
2013-08-22

Ceramic article with reduced surface defect density and process for producing a ceramic article

#217
20130143173
2013-06-06

FURNACES, PARTS THEREOF, AND METHODS OF MAKING SAME

#218
20130142212
2013-06-06

Graphitization furnace and method for producing graphite

#219
20130122393
2013-05-16

FUEL CELL SYSTEM WITH INTERCONNECT

#220
20130095442
2013-04-18

Heat treatment container for vacuum heat treatment apparatus

#221
20130084216
2013-04-04

Heat treating furnace

#222
20130040256
2013-02-14

METHOD FOR PRE-HEATING ANNEALING MATERIAL IN A HOOD-TYPE ANNEALING SYSTEM

#223
20130026685
2013-01-31

Furnace atmosphere generator

#224
20130008567
2013-01-10

Heat treatment method

#225
20120205840
2012-08-16

Method and apparatus for manufacturing granular metallic iron

#226
20120058648
2012-03-08

Thermal reactor with improved gas flow distribution

#227
20120048508
2012-03-01

Method for thermally cycling an object including a polarizable material

#228
20120007292
2012-01-12

METHOD AND APPARATUS FOR PRODUCING REDUCED METAL

#229
20120006579
2012-01-12

Method of fabricating an electric wire having a PTFE-based sheath, said electric wire, and a corresponding lubricant evaporation and sintering line

#230
20110318216
2011-12-29

Method and atmosphere for extending belt life in sintering furnace

#231
20110254208
2011-10-20

Heat treatment furnace

#232
20110162758
2011-07-07

FURNACE OF HEAT TREATMENT, THE METHOD OF HEAT TREATMENT, AND THE DIRECTIONS FOR USE OF FURNACE OF HEAT TREATMENT

#233
20110115137
2011-05-19

Retort Furnace for Heat Treating Metal Workpieces

#234
20110075696
2011-03-31

Easily removable combustion tube

#235
20110039220
2011-02-17

Horizontal type high-temperature hot-blast stove

#236
20110008742
2011-01-13

Multi-chamber heat treatment device and temperature control method

#237
20100328822
2010-12-30

Method for providing a magnetic recording transducer

#238
20100313710
2010-12-16

Method and apparatus for manufacturing granular metallic iron

#239
20100242814
2010-09-30

HIGH TEMPERATURE FURNACE WITH AN OXYGEN-FREE INFEED SECTION AND USE OF SUCH A FURNACE

#240
20100213648
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