ClassID:

119175

C22B1/11 - CPC Classification

Classification description:

Preliminary treatment of ores or scrap Removing sulfur, phosphorus or arsenic other than by roasting

Recent Application in this class:
#1
20260146304
2026-05-28

METHOD FOR RECOVERING RARE EARTH ELEMENTS FROM RARE EARTH RAW MATERIALS INCLUDING RARE EARTH ELEMENTS

#2
20240417827
2024-12-19

METHODS FOR EXTRACTING RARE EARTH ELEMENTS FROM ION-ADSORPTION CLAYS

#3
20240417822
2024-12-19

Alkaline Oxidation Methods and Systems for Recovery of Metals from Ores

#4
20240327947
2024-10-03

MINERAL PROCESSING METHOD

#5
20240124952
2024-04-18

METHOD FOR PRODUCING LOW-ARSENIC COPPER CONCENTRATE

#6
20230313400
2023-10-05

Systems And Methods For Aqueous Recovery Of Lead From Lead Acid Batteries With Reduced Electrolyte Demand

#7
20220372591
2022-11-24

METHOD FOR REMOVING PHOSPHORUS FROM PHOSPHORUS-CONTAINING SUBSTANCE, METHOD FOR MANUFACTURING RAW MATERIAL FOR METAL SMELTING OR RAW MATERIAL FOR METAL REFINING, AND METHOD FOR MANUFACTURING METAL

#8
20220341051
2022-10-27

Systems and methods for aqueous recovery of lead from lead acid batteries with reduced electrolyte demand

#9
20220127695
2022-04-28

PROCESSING ORES CONTAINING PRECIOUS METALS

#10
20210277531
2021-09-09

Selective sulfidation and desulfidation

#11
20210156003
2021-05-27

RECOVERY OF METALS FROM PYRITE

#12
20200024684
2020-01-23

Method and system for desulfurization and dezincification of tailings

#13
20190376158
2019-12-12

Alkaline oxidation methods and systems for recovery of metals from ores

#14
20190345201
2019-11-14

Peptide binding to arsenic-containing mineral and use thereof

#15
20190169709
2019-06-06

Process for the depression of iron sulphides and other disposable elements in the concentration of mineral by flotation and electrochemical reactor

#16
20190070616
2019-03-07

Cationic flotation of silica and apatite from oxidized iron ores at natural pH

#17
20180298466
2018-10-18

Low acidity, low solids pressure oxidative leaching of sulphidic feeds

#18
20180258510
2018-09-13

Method for reducing arsenic content in arsenic-bearing gold material

#19
20180251872
2018-09-06

Biotechnological procedure to remove magnetic sulfur impurities from iron concentrate ores

#20
20180105895
2018-04-19

Process and reactor for arsenic fixation

#21
20180023165
2018-01-25

Method for vitrification of arsenic and antimony

#22
20170240434
2017-08-24

Enhanced metal recovery through oxidation in liquid and/or supercritical carbon dioxide

#23
20170058377
2017-03-02

BIOTECHNOLOGICAL PROCEDURE TO REMOVE MAGNETIC SULFUR IMPURITIES FROM IRON CONCENTRATE ORES

#24
20160258038
2016-09-08

Leaching of minerals

#25
20150329937
2015-11-19

Process for recovery of copper from arsenic-bearing and/or antimony-bearing copper sulphide concentrates

#26
20150267276
2015-09-24

Removal of arsenic using a dissimilatory arsenic reductase

#27
20150123030
2015-05-07

Method of leaching arsenic from ore comprising copper

#28
20150068365
2015-03-12

Integrated process for production of ozone and oxygen

#29
20140260803
2014-09-18

Process for producing direct reduced iron (DRI) utilizing gases derived from coal

#30
20140109724
2014-04-24

Method for producing ferroalloy containing nickel

#31
20120326364
2012-12-27

Process and equipment for the production of direct reduced iron and/or pig iron from iron ores having a high-phosphorus content

#32
20110308352
2011-12-22

Method for producing ferroalloy containing nickel

#33
20110296949
2011-12-08

Process and equipment for the production of direct reduced iron and/or pig iron from iron ores having a high-phosphorus content

#34
20090272230
2009-11-05

Recovery of rare earth elements

#35
20090158893
2009-06-25

MICROBIAL PRE-TREATMENT OF DOUBLE REFRACTORY GOLD ORES

#36
20070292326
2007-12-20

Process for reduced alkali consumption in the recovery of silver

#37
16716630
2020-11-03

Arsenic removal from lead concentrate by ozone treatment and reverse flotation