ClassID:

119242

C22B3/08 - page 2 - CPC Classification

Classification description:

Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated ; in inorganic salt solutions other than ammonium salt solutions Sulfuric acid, other sulfurated acids or salts thereof

Recent Application in this class:
#301
20150152521
2015-06-04

Autoclave apparatus used during high-pressure acid leaching process

#302
20150145183
2015-05-28

Flash vessel and method for operating same

#303
20150123030
2015-05-07

Method of leaching arsenic from ore comprising copper

#304
20150122084
2015-05-07

Method of recovering rare earth elements from oxidized scrap of permanent magnet

#305
20150096412
2015-04-09

Nickel and cobalt recovery using continuous ion exchange

#306
20150053572
2015-02-26

Hydrometallurgical process for the recovery of tellurium from high lead bearing copper refinery anode slime

#307
20150000466
2015-01-01

Production of high grade nickel product

#308
20140356225
2014-12-04

Method for pre-treatment of gold-bearing oxide ores

#309
20140322108
2014-10-30

Treatment of sulphidic materials

#310
20140311296
2014-10-23

Method for leaching a sulphidic metal concentrate

#311
20140096649
2014-04-10

Alkaline and acid pressure oxidation of precious metal-containing materials

#312
20140065037
2014-03-06

Treatment of indium gallium alloys and recovery of indium and gallium

#313
20130309151
2013-11-21

Heap leaching of manganese-containing ores

#314
20130283977
2013-10-31

Process for extraction of rare earth elements

#315
20130150232
2013-06-13

Slurry catalyst and slurry flakes valorization

#316
20130123534
2013-05-16

Method for synthesizing rare earth metal extractant

#317
20130102806
2013-04-25

Method for synthesizing rare earth metal extractant

#318
20130061719
2013-03-14

PRODUCTION OF METAL PRODUCTS DIRECTLY FROM UNDERGROUND ORE DEPOSITS

#319
20130037416
2013-02-14

METHOD FOR PRODUCING MERCURY-FREE ALKALINE-MANGANESE TYPE ELECTROLYZED MANGANESE DIOXIDE

#320
20130028816
2013-01-31

Selective base metals leaching from laterite ores

#321
20120318102
2012-12-20

Method for enhancing solid-liquid separation in conjunction with laterite leaching

#322
20120186397
2012-07-26

RECLAIMING OF LEAD IN FORM OF HIGH PURITY LEAD COMPOUND FROM RECOVERED ELECTRODE PASTE SLIME OF DISMISSED LEAD BATTERIES AND/OR OF LEAD MINERALS

#323
20120174713
2012-07-12

Method of Agglomeration

#324
20120128528
2012-05-24

Alkaline and acid pressure oxidation of precious metal-containing materials

#325
20120114538
2012-05-10

Method for extracting rare earth elements from phosphogypsum

#326
20120103827
2012-05-03

METHOD FOR LEACHING CHALCOPYRITE CONCENTRATION

#327
20120067173
2012-03-22

PROCESS FOR LIBERATING METALS USING DIRECT PRODUCTION OF LEACH GRADE ACID SOLUTIONS

#328
20110271796
2011-11-10

Method for the selective acidic dezincification of steel scrap

#329
20110268632
2011-11-03

HYDROMETALLURGICAL METHOD FOR THE REUSE OF SECONDARY ZINC OXIDES RICH IN FLUORIDE AND CHLORIDE

#330
20110217222
2011-09-08

Process for the acid digestion of metal-containing compounds

#331
20110201095
2011-08-18

Method of treating a sulphide mineral

#332
20110174113
2011-07-21

Acid Recovery

#333
20110132147
2011-06-09

Method for thiosulfate leaching of precious metal-containing materials

#334
20110129891
2011-06-02

Process for Controlled Homogeneous Acid Leaching

#335
20110089045
2011-04-21

ELECTROCHEMICAL PROCESS FOR THE RECOVERY OF METALLIC IRON AND SULFURIC ACID VALUES FROM IRON-RICH SULFATE WASTES, MINING RESIDUES AND PICKLING LIQUORS

#336
20110076208
2011-03-31

Method of extracting Te and bismuth oxide and recovering byproducts

#337
20110058998
2011-03-10

Recovering metal values from a metalliferrous material

#338
20110028306
2011-02-03

PROCESS FOR THE RECOVERY OF PRECIOUS METALS FROM USED AND/OR DEFECTIVE CATALYTIC CARRIERS

#339
20110023662
2011-02-03

High temperature leaching process

#340
20110014097
2011-01-20

SYSTEM AND METHOD FOR CONVERSION OF MOLYBDENITE TO ONE OR MORE MOLYBDENUM OXIDES

#341
20110011216
2011-01-20

PROCESS FOR RECOVERING METALS FROM RESINS

#342
20100314242
2010-12-16

Method for Recovering Gold, Silver, Copper and Iron from Plasma-Caused Slag Containing Valuable Metals

#343
20100300249
2010-12-02

Recovering Metal Values from a Leach Residue

#344
20100282024
2010-11-11

Limonite and Saprolite Heap Leach Process

#345
20100242681
2010-09-30

Method for concentration of gold in copper sulfide minerals

#346
20100226837
2010-09-09

PRODUCTION OF METAL PRODUCTS DIRECTLY FROM UNDERGROUND ORE DEPOSITS

#347
20100189612
2010-07-29

SYSTEM AND METHOD FOR SEPARATING TELLURIUM FROM CADMIUM WASTE

#348
20100175509
2010-07-15

Method of processing copper arsenic compound

#349
20100135878
2010-06-03

Production process of sulfide containing nickel and cobalt

#350
20100132509
2010-06-03

Method for thiosulfate leaching of precious metal-containing materials

#351
20100116092
2010-05-13

Process for extracting gold from gold-bearing ore

#352
20100111751
2010-05-06

Method for thiosulfate leaching of precious metal-containing materials

#353
20100031779
2010-02-11

Process for recovery of copper from copper-containing chloride media

#354
20100024603
2010-02-04

Reduction of lime consumption when treating refractory gold ores or concentrates

#355
20090320648
2009-12-31

Recovery of molybdenum from molybdenum bearing sulfide materials by bioleaching in the presence of iron

#356
20090293680
2009-12-03

Processing of Metal Values from Concentrates

#357
20090272227
2009-11-05

Metal extraction without cyanide

#358
20090257931
2009-10-15

METHOD OF RECOVERING NOBLE METALS AND RECOVERING SYSTEM FOR NOBLE METALS

#359
20090178512
2009-07-16

Process for liberating metals using direct production of leach grade acid solutions

#360
20090101518
2009-04-23

Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solvent/solution extraction

#361
20090078087
2009-03-26

PROCESS FOR THE ACID DIGESTION OF METAL-CONTAINING COMPOUNDS

#362
20090074608
2009-03-19

Process for mercury control during pressure oxidation

#363
20090071296
2009-03-19

Process for controlling acid in sulfide pressure oxidation processes

#364
20090022639
2009-01-22

Method for the recovery of valuable metals and arsenic from a solution

#365
20090019970
2009-01-22

PROCESS FOR RECOVERY OF METAL VALUES FROM MATERIALS CONTAINING ARSENIC AND/OR ANTIMONY

#366
20080286182
2008-11-20

Combined Leaching Process

#367
20080196546
2008-08-21

Use of non-ionic surfactants in the production of metals

#368
20080170976
2008-07-17

Method for the hydrometallurgical treatment of sulfide concentrate containing several valuable metals

#369
20080152558
2008-06-26

Method for the treatment of copper-bearing materials

#370
20080124260
2008-05-29

Titanium Intermediate Processing

#371
20080124259
2008-05-29

Metal Extraction

#372
20080118422
2008-05-22

System and method for conversion of molybdenite to one or more molybdenum oxides

#373
20080105088
2008-05-08

Method for thiosulfate leaching of precious metal-containing materials

#374
20080025890
2008-01-31

Use of surfactants in the production of metal

#375
20070295613
2007-12-27

Recovery of metals from oxidised metalliferous materials

#376
20070273071
2007-11-29

Method and apparatus for controlling metal separation

#377
20070266827
2007-11-22

Thiosulphate Leach Process

#378
20070253878
2007-11-01

Preparation of Zinc Chemicals from the Minor Flow of a Process

#379
20070217975
2007-09-20

Process for uranium recovery using anion exchange resin

#380
20070183951
2007-08-09

Method for recovering noble metals from metallic carrier catalytic device

#381
20070137437
2007-06-21

Thiosulfate generation in situ in precious metal recovery

#382
20070098609
2007-05-03

Hydrometallurgical process for the treatment of metal-bearing sulfide mineral concentrates

#383
20070092416
2007-04-26

Titaniferous ore beneficiation

#384
20070089566
2007-04-26

Method for thiosulfate leaching of precious metal-containing materials

#385
20070039420
2007-02-22

Method for improving metals recovery using high temperature pressure leaching

#386
20070039419
2007-02-22

Treatment of reclaim water for use in metals recovery

#387
20060275191
2006-12-07

System and method for separating tellurium from cadmium waste

#388
20060248983
2006-11-09

Heap leach

#389
20060233686
2006-10-19

Production of titania

#390
20060213332
2006-09-28

Method for recovery of zinc by countercurrent leaching

#391
20060191377
2006-08-31

METHOD FOR PROCESSING ELEMENTAL SULFUR-BEARING MATERIALS USING HIGH TEMPERATURE PRESSURE LEACHING

#392
20060144717
2006-07-06

Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solvent/solution extraction

#393
20060144192
2006-07-06

Method for processing sulfide minerals and concentrates

#394
20060133974
2006-06-22

Reduction of lime consumption when treating refractor gold ores or concentrates

#395
20050269208
2005-12-08

Leaching process for copper concentrates

#396
20050249652
2005-11-10

Process to recover vanadium contained in acid solutions

#397
20050180903
2005-08-18

Production of titania

#398
20050155459
2005-07-21

Method for processing elemental sulfur-bearing materials using high temperature pressure leaching

#399
20050155458
2005-07-21

Method for improving metals recovery using high temperature pressure leaching

#400
20050103163
2005-05-19

Hydrometallurgical processing of manganese containing materials

#401
18547565
2024-03-12

Method for producing aqueous solution containing nickel or cobalt

#402
18373975
2024-06-04

Leaching method of scheelite