ClassID:

119293

C22B7/04 - CPC Classification

Classification description:

Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals Working-up slag

Recent Application in this class:
#1
20260132484
2026-05-14

ELECTROCHEMICAL METALLURGICAL SLAG RECYCLING

#2
20260097362
2026-04-09

METHOD FOR EXTRACTING CALCIUM, METHOD FOR FIXING CARBON DIOXIDE, AND CARBON DIOXIDE FIXATION APPARATUS

#3
20260043112
2026-02-12

COMPREHENSIVE UTILIZATION METHOD FOR VALUABLE ELEMENTS IN HYDROMETALLURGICAL SLAG OF LATERITE NICKEL ORE

#4
20260035297
2026-02-05

SUPPLEMENTARY CEMENTITIOUS MATERIAL COMPOSITION AND METHOD OF MAKING

#5
20260002231
2026-01-01

COMBINED TREATMENT METHOD FOR LATERITE NICKEL ORE HYDROMETALLURGICAL SLAG AND PHOSPHATING SLAG

#6
20250376741
2025-12-11

METHOD OF UPGRADING INDUSTRIAL FURNACE BY-PRODUCTS

#7
20250343289
2025-11-06

LITHIUM-CONTAINING SLAG AND METHOD FOR PRODUCING VALUABLE METAL

#8
20250327150
2025-10-23

ENERGY EFFICIENT SALT-FREE RECOVERY OF METAL FROM DROSS

#9
20250305086
2025-10-02

METHODS FOR RECOVERING A TARGET METAL FROM IRON OR STEEL SLAG USING AT LEAST ONE OF A CARBOTHERMIC REDUCTION PROCESS AND A PYRO-HYDROMETALLURGICAL PROCESS

#10
20250146091
2025-05-08

METHOD FOR TREATING STEEL MILL SLAG

#11
20240274911
2024-08-15

LEADED SLAG CLEANING AND RECOVERY OF USEFUL METALS AND REUSE OF SLAG

#12
20240270588
2024-08-15

PROCESS FOR TREATMENT OF A SODIUM SULFATE CONTAINING RESIDUE PROCESS STREAM OF A BATTERY MANUFACTURING FACILITY, A BATTERY RECYCLING FACILITY, OR A STEEL PRODUCTION PLANT

#13
20240263269
2024-08-08

IMPROVED METHOD FOR RECYCLING ZINC (ZN)

#14
20240258597
2024-08-01

ENERGY-EFFICIENT PYROMETALLURGICAL PROCESS FOR TREATING LI-ION BATTERIES

#15
20240240282
2024-07-18

Method for Denitration of Carbothermally Reduced Iron-Containing Nonferrous Metal Smelting Slag Mixed With Advanced Oxidizer

#16
20240182304
2024-06-06

METHOD FOR THE HIGH EFFICIENCY RECYCLING OF IRON PHOSPHATE BLACK POWDER SLAG

#17
20240084419
2024-03-14

RECOVERY METHOD OF Ra-226, PRODUCTION METHOD OF Ra-226 SOLUTION, AND PRODUCTION METHOD OF Ac-225 SOLUTION

#18
20240068069
2024-02-29

COPPER-TIN-NICKEL BRAZING MATERIAL PREPARED BY ALLOYS RECYCLED FROM E-WASTE, PREPARATION METHOD THEREFOR AND SYSTEM THEREOF

#19
20240035116
2024-02-01

Method for extracting valuable metal from low-matte nickel converter slag

#20
20240021817
2024-01-18

PROCESS FOR TRANSFORMING SILICON SLAG INTO HIGH CAPACITY ANODE MATERIAL FOR LITHIUM-ION BATTERIES

#21
20230392230
2023-12-07

Method for granulating a metallurgical slag

#22
20230369667
2023-11-16

Recovery of nickel and cobalt from Black Mass

#23
20230357888
2023-11-09

ENERGY EFFICIENT SALT-FREE RECOVERY OF METAL FROM DROSS

#24
20230250511
2023-08-10

Recovery of nickel and cobalt from Li-ion batteries or their waste

#25
20230227940
2023-07-20

RECOVERY OF VANADIUM FROM ALKALINE SLAG MATERIALS

#26
20230151446
2023-05-18

PLANT FOR THE TREATMENT AND RECOVERY OF WHITE SLAG RESULTING FROM STEELMAKING PROCESSES

#27
20230132701
2023-05-04

METHOD FOR RECOVERING METALS CONTAINED IN SPENT CATALYSTS FROM FERRO-ALLOYS

#28
20230111491
2023-04-13

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

#29
20220389536
2022-12-08

PLASMA INDUCED FUMING FURNACE

#30
20220364200
2022-11-17

Methods for recovering a target metal from iron or steel slag using at least one of a carbothermic reduction process and a pyro-hydrometallurgical process

#31
20220356543
2022-11-10

Method for co-extraction of vanadium, titanium and chromium from vanadium slag

#32
20220290271
2022-09-15

Processing systems and methods for steel-making co-products

#33
20220259697
2022-08-18

METHOD FOR RECOVERING PGM

#34
20220259057
2022-08-18

OXIDATIVE ROASTING OF BLACK DROSS AND SALT CAKE

#35
20220184633
2022-06-16

SYSTEM AND METHOD FOR RECOVERY OF VALUABLE CONSTITUENTS FROM STEEL-MAKING SLAG FINES

#36
20220177999
2022-06-09

PGM converting process and jacketed rotary converter

#37
20220170132
2022-06-02

Method for processing titanium extraction slag and carbon extracted and dechlorinated tailing

#38
20220064064
2022-03-03

METHOD OF PROCESSING MOLTEN MATERIAL

#39
20220024778
2022-01-27

Method of extracting and carbonating calcium from alkaline industrial waste or by-product materials

#40
20210363606
2021-11-25

Solder production process

#41
20210340025
2021-11-04

Compositions and Methods for Purification of Metals from Steel Making Waste Streams

#42
20210331974
2021-10-28

Method for preparing a cementing material using smelting industrial waste slag after utilizing the simultaneous removal of S02 and NOx in flue gas and application of the cementing material obtained by the same

#43
20210222269
2021-07-22

Construction elements with slag from non-ferrous metal production

#44
20210198768
2021-07-01

Selective Extraction of Metals From Complex Inorganic Sources

#45
20210126300
2021-04-29

Alloy powder and method for producing same

#46
20210123119
2021-04-29

PROCESS FOR THE RECOVERY OF LITHIUM

#47
20210123118
2021-04-29

Dross management system and method

#48
20210095925
2021-04-01

Dross handling methods and apparatus

#49
20210071282
2021-03-11

Pyrometallurgical process

#50
20210062298
2021-03-04

SYSTEMS AND METHODS FOR ALKALINE EARTH PRODUCTION

#51
20210032724
2021-02-04

Process For Extracting Values from Lithium Slag

#52
20210002742
2021-01-07

System, apparatus, and process for leaching metal and storing thermal energy during metal extraction

#53
20200392604
2020-12-17

Pyrorefining process

#54
20200370145
2020-11-26

Process for recovering vanadium in the form of iron vanadate from a gasifier slag

#55
20200354812
2020-11-12

Method for treating slag

#56
20200332392
2020-10-22

ENERGY EFFICIENT SALT-FREE RECOVERY OF METAL FROM DROSS

#57
20200332390
2020-10-22

Method for preparing iron ore concentrates by recycling copper slag tailings

#58
20200318209
2020-10-08

METHOD FOR ELUTING CALCIUM FROM STEELMAKING SLAG, AND METHOD FOR COLLECTING CALCIUM FROM STEELMAKING SLAG

#59
20200282252
2020-09-10

Method for detoxifying chromium slag by using high sulfur coal

#60
20200262712
2020-08-20

Method of pretreatment and bromine recovery of PCB incineration ash

#61
20200231498
2020-07-23

Method of continuous manufacturing of solidified steelmaking slag and associated device

#62
20200165703
2020-05-28

METHOD OF PRODUCING TITANIUM AND TITANIUM ALLOY NANOPOWDER FROM TITANIUM-CONTAINING SLAG THROUGH SHORTENED PROCESS

#63
20200157655
2020-05-21

PROCESSING METHODS AND PROCESSING APPARATUS

#64
20200087184
2020-03-19

Sequestration of macronutrients from anaerobic wastewater treatment with iron- and steel-making slags

#65
20200064071
2020-02-27

Electric furnace

#66
20200038876
2020-02-06

System and method for recovery of valuable constituents from steel-making slag fines

#67
20200030814
2020-01-30

METHOD AND DEVICE FOR WASHING/CLEANING GRANULAR MATERIAL FROM SLAG AND WASHING/CLEANING BOTTOM/BOILER ASH FROM THERMAL WASTE TREATMENT

#68
20190382312
2019-12-19

Method for recovering valuable metals and simultaneously preparing ceramsite by roasting cyanide tailing

#69
20190338393
2019-11-07

Converting process with slag separation and recycle

#70
20190338380
2019-11-07

Jacketed rotary converter and PGM converting process

#71
20190330720
2019-10-31

Converting process with partial pre-oxidation of PGM collector alloy

#72
20190309392
2019-10-10

PROCESS FOR THE PREPARATION OF A CONCENTRATE OF METALS, RARE METALS AND RARE EARTH METALS FROM RESIDUES OF ALUMINA PRODUCTION BY BAYER PROCESS OR FROM MATERIALS WITH A CHEMICAL COMPOSITION SIMILAR TO SAID RESIDUES, AND REFINEMENT OF THE CONCENTRATE SO OBTAINED

#73
20190300983
2019-10-03

IMPROVEMENTS IN AND RELATING TO PROCESSING METHODS AND PROCESSING APPARATUS

#74
20190292629
2019-09-26

Process for the recovery of lithium

#75
20190256949
2019-08-22

Low-flux converting process for PGM collector alloy

#76
20190256947
2019-08-22

PROCESSING OF CLINKER CONTAINING POLYMETALLIC RAW MATERIALS

#77
20190211420
2019-07-11

PROCESSED SLAG AND METHODS FOR PRODUCING SAME

#78
20190119785
2019-04-25

System and method for concentrating rare earth elements from coal byproducts/slag

#79
20190119783
2019-04-25

Method of continuously processing nickel-containing copper sulphide materials

#80
20190032171
2019-01-31

Lithium-rich metallurgical slag

#81
20190032170
2019-01-31

Method for comprehensive recovery of silver-containing lead slag

#82
20190017147
2019-01-17

Separation method of rare earth element and iron and rare earth element-containing slag

#83
20180319692
2018-11-08

Method for producing rock wool and recoverable cast iron

#84
20180245182
2018-08-30

Methods and systems for recovering products from iron and steel slag

#85
20180245177
2018-08-30

OPTIMIZED ORE PROCESSING USING MOLTEN SALTS FOR LEACHING AND THERMAL ENERGY SOURCE

#86
20180222764
2018-08-09

Method for obtaining calcium aluminates from non-saline aluminum slags

#87
20180187285
2018-07-05

Method and apparatus for retrieving valuable metals step by step from waste printed circuit board particles

#88
20180185851
2018-07-05

Method and Installation Configuration for Preparing and Activating a Raw Material

#89
20180179613
2018-06-28

Method and carrier for transporting reductant such as coke into a metallurgical furnace and production method of the carrier

#90
20180073102
2018-03-15

Method and arrangement for operating a metallurgical furnace and computer program product

#91
20180057911
2018-03-01

Slag from non-ferrous metal production

#92
20180051357
2018-02-22

Method for recovering calcium-containing solid component from steelmaking slag and recovered solid component

#93
20180023169
2018-01-25

PRODUCTION LINE FOR PRODUCING NATIONAL-STANDARD MAGNESIUM ALLOY INGOTS ON THE BASIS OF MAGNESIUM ALLOY WASTE MATERIAL

#94
20170362680
2017-12-21

Methods and apparatus for metal recovery from slag

#95
20170314861
2017-11-02

Method for reducing molten raw materials, and device for carrying out said method

#96
20170298472
2017-10-19

Processed slag and methods for producing same

#97
20170283907
2017-10-05

Fuming furnace with lead collecting and discharging function

#98
20170282251
2017-10-05

Method and system for processing slag material

#99
20170252751
2017-09-07

Pressure Interference Wave Mill

#100
20170240432
2017-08-24

Preparation method of calcium carbonate with high purity from inorganic materials containing alkali metals or alkali earth metals

#101
20170226610
2017-08-10

Device and method for recovering a non-ferrous metal from hot dross

#102
20170198371
2017-07-13

METHOD FOR RECOVERING METALS FROM SECONDARY MATERIALS AND OTHER MATERIALS COMPRISING ORGANIC CONSTITUENTS

#103
20170190592
2017-07-06

Extraction of products from titanium-bearing minerals

#104
20170183748
2017-06-29

METHOD AND DEVICE FOR PROCESSING IRON SILICATE ROCK

#105
20170174525
2017-06-22

Extraction of products from titanium-bearing minerals

#106
20170158523
2017-06-08

Extraction of products from titanium-bearing minerals

#107
20170137912
2017-05-18

PROCESS AND APPARATUS FOR DRY GRANULATION OF SLAG WITH REDUCED FORMATION OF SLAG WOOL

#108
20170121595
2017-05-04

Granulated slag products and processes for their production

#109
20170051381
2017-02-23

Dross management system and method

#110
20170029922
2017-02-02

ENVIRONMENTALLY FRIENDLY TREATMENT METHOD OF REFINING MAGNESIUM SLAG

#111
20170009319
2017-01-12

ENERGY EFFICIENT SALT-FREE RECOVERY OF METAL FROM DROSS

#112
20170005374
2017-01-05

Process for recycling li-ion batteries

#113
20160312334
2016-10-27

Soldering process

#114
20160289783
2016-10-06

Method for treating desulfurization slag

#115
20160273069
2016-09-22

Methods for purifying aluminium ions

#116
20160265083
2016-09-15

Processing methods and processing apparatus

#117
20160265082
2016-09-15

PROCESSES FOR TREATING MAGNESIUM-CONTAINING MATERIALS

#118
20160263581
2016-09-15

Apparatus for recycling waste raw material

#119
20160257617
2016-09-08

Reduction and harmless method for recycling heavy metal waste

#120
20160237525
2016-08-18

Systems and methods for alkaline earth production

#121
20160201160
2016-07-14

Treatment of high sulphur solids

#122
20160194733
2016-07-07

Producing a titanium product

#123
20160145716
2016-05-26

Method for treating aluminum slags

#124
20160129454
2016-05-12

System and method for recovery of valuable constituents from steel-making slag fines

#125
20160108497
2016-04-21

Methods of producing a titanium product

#126
20160108495
2016-04-21

Method for the treatment of aluminium slags treatment and associated plant

#127
20160107930
2016-04-21

Method for processing steel slag and hydraulic mineral binder

#128
20160102383
2016-04-14

System and method for the recovery of metal values from slags, drosses, and other metal-bearing materials

#129
20160074875
2016-03-17

Scrap separation system and device

#130
20160068928
2016-03-10

System apparatus and process for leaching metal and storing thermal energy during metal extraction

#131
20160023896
2016-01-28

Method for producing hydrogen and/or other gases from steel plant wastes and waste heat

#132
20150368753
2015-12-24

Method for improving quality of titanium-containing feedstock

#133
20150368746
2015-12-24

Apparatus and method for solder recovery

#134
20150307959
2015-10-29

Method and device for depleting copper smelting slag

#135
20150307958
2015-10-29

Monazite ballast separation and recovery method

#136
20150307957
2015-10-29

Production of nano sized ferrite comprising oxidizing a molten slag

#137
20150232961
2015-08-20

Plasma induced fuming

#138
20150225811
2015-08-13

Recovery of zinc from lead slag

#139
20150225808
2015-08-13

Processes for preparing alumina and magnesium chloride by HCl leaching of various materials

#140
20150209798
2015-07-30

Method and system for processing slag material

#141
20150159238
2015-06-11

Dross processing system

#142
20150159233
2015-06-11

Method for the treatment of steelwork slag and hydraulic mineral binder

#143
20150143951
2015-05-28

Method and arrangement for refining copper concentrate

#144
20150122082
2015-05-07

Method for processing slags of non-ferrous metallurgy

#145
20150044468
2015-02-12

Method for granulating particle-containing material obtained from industrial processes, the granulate thus produced, and use thereof

#146
20150007696
2015-01-08

Method of recovering Fe from steel-making slag

#147
20150000467
2015-01-01

Method of separating and recovering iron from waste non-ferrous slag discharged from process for smelting of non-ferrous metals, including copper, zinc and lead by physical and chemical separation technique

#148
20140331820
2014-11-13

Method for reducing slag

#149
20140286842
2014-09-25

Recovery method for a continuous calcium extraction and PCC production

#150
20140262968
2014-09-18

SYSTEM AND METHOD FOR RECOVERY OF VALUABLE CONSTITUENTS FROM STEEL-MAKING SLAG FINES

#151
20140245864
2014-09-04

DROSS PROCESSING SYSTEM

#152
20140224069
2014-08-14

Method for the production and the purification of molten calcium aluminate using contaminated aluminum dross residue

#153
20140166787
2014-06-19

PROCESSING OF STEEL MAKING SLAG

#154
20140091503
2014-04-03

Method for recovering valuable metals from slag and apparatus for manufacturing multifunctional aggregate

#155
20140041485
2014-02-13

Process for magnesium production

#156
20140008238
2014-01-09

Process for recovering valuable metals from precious metal smelting slag

#157
20130292878
2013-11-07

Granulation of metallurgical slag

#158
20130276585
2013-10-24

Method for concentrating and recovering precious metals from spent mobile phone PCBS and spent auto-catalysts using waste nonferrous slag

#159
20130269481
2013-10-17

Method for producing blister copper directly from copper concentrate

#160
20130240415
2013-09-19

Method and system for processing slag material

#161
20130228958
2013-09-05

Apparatus for atomizing molten slag and recovering valuable metal

#162
20130206875
2013-08-15

Dry granulation of metallurgical slag

#163
20130139650
2013-06-06

Waste handling methods and apparatus

#164
20130075964
2013-03-28

Dross handling methods and apparatus

#165
20130043139
2013-02-21

Process for producing basic lead carbonate

#166
20120325899
2012-12-27

Dross removal

#167
20120325055
2012-12-27

Preparation method for stainless steel slags and steelworks slags for recovery of metal

#168
20120291591
2012-11-22

AGENT FOR STEEL-MAKING FORMED BY ALUMINUM-MAKING SLAG

#169
20120198964
2012-08-09

Waste treatment furnace and method

#170
20120148461
2012-06-14

PROCESS FOR MULTI METAL SEPARATION FROM RAW MATERIALS AND SYSTEM FOR USE

#171
20120137934
2012-06-07

Reducing agent for the soluble chromate content of cement and methods for production thereof

#172
20120134902
2012-05-31

Method of fixing carbon dioxide

#173
20120132032
2012-05-31

MAGNETIC RECOVERY OF VALUABLES FROM SLAG MATERIAL

#174
20120128553
2012-05-24

METHOD OF FIXING CARBON DIOXIDE COMPRISING A STEP OF RECYCLING THE USED EXTRACTION SOLVENT

#175
20120117864
2012-05-17

METHOD FOR REPROCESSING SOLID COMBUSTION PRODUCTS OF COAL

#176
20120114539
2012-05-10

Metal recovery process

#177
20120073406
2012-03-29

Method and apparatus for recovering valuable metals from slag and manufacturing multifunctional aggregate

#178
20120073405
2012-03-29

DRY PROCESSING METHOD AND SYSTEM FOR CONVERTER SLAG IN COPPER SMELTING

#179
20120073404
2012-03-29

METHOD OF RECOVERING VALUABLE METAL FROM SLAG

#180
20110296952
2011-12-08

Soldering process

#181
20110293494
2011-12-01

PROCEDURE FOR OBTAINING CALCIUM ALUMINATE FROM WASTE OBTAINED FOLLOWING TREATMENT OF SALINE DROSS FROM THE PRODUCTION OF SECONDARY ALUMINIUM

#182
20110278498
2011-11-17

HYDROCOMPOSITE WITH IRON AND STEEL SLAG AS STARTING MATERIAL AND METHOD FOR PRODUCING THE SAME

#183
20110265608
2011-11-03

Process for production of ultra low phosphorous and carbon ferromanganese by using of ferromanganese slag

#184
20110203415
2011-08-25

Method of suppressing slag foaming in continuous melting furnace

#185
20110203413
2011-08-25

Process and equipment for the treatment of loads or residues of non-ferrous metals and their alloys

#186
20110197707
2011-08-18

Method for reducing oxidic slags and dusts using inductively heated furnace

#187
20110185856
2011-08-04

Ironmaking and steelmaking

#188
20110179907
2011-07-28

Method for processing solid or molten materials

#189
20110139628
2011-06-16

Method of producing calcium carbonate from waste and by-products

#190
20110132145
2011-06-09

Method for separating dross in soldering process

#191
20110113925
2011-05-19

METHOD OF AND SYSTEM FOR PROCESSING RED MUD

#192
20110072935
2011-03-31

Processing of steel making slag

#193
20110062215
2011-03-17

SOLDERING PROCESS

#194
20110058997
2011-03-10

Process for chlorinating resources containing recoverable metals

#195
20110045962
2011-02-24

Process for recycling spent pot linings (SPL) from primary aluminium production

#196
20110042868
2011-02-24

Process and apparatus for recovery of non-ferrous metals from zinc residues

#197
20110017101
2011-01-27

Process for producing a granular material

#198
20100288076
2010-11-18

Device and method for obtaining non-ferrous metals

#199
20100263484
2010-10-21

SMELTING FURNACE

#200
20100242683
2010-09-30

PROCESS FOR TREATING EXHAUST GAS GENERATED DURING WATER-GRANULATION OF SLAG AND SYSTEM FOR SAID TREATMENT

#201
20100242682
2010-09-30

METHOD AND SYSTEM OF DRY PROCESSING OF CONVERTER SLAG IN COPPER SMELTING

#202
20100242676
2010-09-30

Recovery of residues containing copper and other valuable metals

#203
20100193733
2010-08-05

Regenerated calcium aluminate product and process of manufacture

#204
20100147930
2010-06-17

Dross Removal

#205
20100107819
2010-05-06

Method for the recovery by melting of at least one non-ferrous metal, and product for the implementation of the method

#206
20100107817
2010-05-06

Method for recovering valuable metals from wastes

#207
20100058891
2010-03-11

Method of recovering scrap metal

#208
20100050814
2010-03-04

Recovery of non-ferrous metals from by-products of the zinc and lead industry using electric smelting with submerged plasma

#209
20100031771
2010-02-11

Method for reducing oxidic slags and dusts and inductively heatable furnance for carrying out this method

#210
20090311154
2009-12-17

Extraction process for reactive metal oxides

#211
20090266200
2009-10-29

Method for reducing metal oxide slags or glasses and/or for degassing mineral melts, and device for carrying out said method

#212
20090261147
2009-10-22

Dross Removal

#213
20090260542
2009-10-22

Aggregate and filler extracted from slag

#214
20090249919
2009-10-08

Method for the continuous or discontinuous extraction of a metal or several metals from a slag that contains the metal or a compound of the metal

#215
20090226365
2009-09-10

Agglomeration of titania

#216
20090220410
2009-09-03

Method for Producing Hydrogen and/or Other Gases from Steel Plant Wastes and Waste Heat

#217
20090217787
2009-09-03

WASTE TREATMENT FURNACE AND METHOD

#218
20090211398
2009-08-27

Process and arrangement for extracting a metal from slag a containing said metal

#219
20090193849
2009-08-06

METHOD FOR STABILIZING SLAG AND NOVEL MATERIALS PRODUCED THEREBY

#220
20090114063
2009-05-07

Method for reducing and/or refining a metal-containing slag

#221
20090071289
2009-03-19

Process for recovering platinum group metals using reductants

#222
20080250900
2008-10-16

Method and apparatus for lead smelting

#223
20080250899
2008-10-16

Processing metallurgical slag

#224
20080202287
2008-08-28

Process and equipment for the treatment of loads or residues of non-ferrous metals and their alloys

#225
20080156144
2008-07-03

METHOD FOR REDUCING TO METALLIC CHROMIUM THE CHROMIUM OXIDE IN SLAG FROM STAINLESS STEEL PROCESSING

#226
20080148902
2008-06-26

Processing of steel making slags

#227
20080141829
2008-06-19

Filter powder recycling process

#228
20080029538
2008-02-07

Process and system for treating steel slag

#229
20070283785
2007-12-13

Process for recovery of iron from copper slag

#230
20070266902
2007-11-22

Regenerated calcium aluminate product and process of manufacture

#231
20070264151
2007-11-15

Methods and systems for removing copper from ferrous scrap

#232
20070256518
2007-11-08

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