1. CPC Sections
  2. CPC Section C
  3. CPC Class C01
  4. CPC Subclass C01F
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CPC
COOPERATIVE PATENT CLASSIFICATION
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS (metal hydrides {monoborane, diborane or addition complexes thereof} C01B 6/00; salts of oxyacids of halogens C01B 11/00; peroxides, salts of peroxyacids C01B 15/00; sulfides or polysulfides of magnesium, calcium, strontium, or barium C01B 17/42; thiosulfates, dithionites, polythionates C01B 17/64; compounds containing selenium or tellurium C01B 19/00; binary compounds of nitrogen with metals C01B 21/06; azides C01B 21/08; {compounds other than ammonia or cyanogen containing nitrogen and non-metals and optionally metals C01B 21/082; amides or imides of silicon C01B 21/087}; metal {imides or} amides C01B 21/092, {C01B 21/0923}; nitrites C01B 21/50; {compounds of noble gases C01B 23/0005}; phosphides C01B 25/08; salts of oxyacids of phosphorus C01B 25/16; carbides C01B 32/90; compounds containing silicon C01B 33/00; compounds containing boron C01B 35/00; compounds having molecular sieve properties but not having base-exchange properties C01B 37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B 39/00; cyanides C01C 3/08; salts of cyanic acid C01C 3/14; salts of cyanamide C01C 3/16; thiocyanates C01C 3/20; {double sulfates of magnesium with sodium or potassium C01D 5/12; with other alkali metals C01D 15/00, C01D 17/00}) [2017-08]
C01F 1/00
Methods of preparing compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or the rare earths, in general [2013-01]
C01F 3/00
Compounds of beryllium [2013-01]
C01F 3/005
.
{Fluorides or double fluorides of beryllium with alkali metals or ammonium; Preparation of beryllium compounds therefrom} [2013-01]
C01F 3/02
.
Oxides; Hydroxides [2013-01]
C01F 5/00
Compounds of magnesium [2013-01]
C01F 5/02
.
Magnesia [2013-01]
C01F 5/04
. .
by oxidation of metallic magnesium [2013-01]
C01F 5/06
. .
by thermal decomposition of magnesium compounds (calcining magnesite or dolomite C04B 2/10) [2013-01]
C01F 5/08
. . .
by calcining magnesium hydroxide [2013-01]
C01F 5/10
. . .
by thermal decomposition of magnesium chloride with water vapour [2013-01]
C01F 5/12
. . .
by thermal decomposition of magnesium sulfate, with or without reduction [2013-01]
C01F 5/14
.
Magnesium hydroxide [2013-01]
C01F 5/145
. .
{Purification} [2013-01]
C01F 5/16
. .
by treating magnesia, e.g. calcined dolomite, with water or solutions of salts not containing magnesium [2013-01]
C01F 5/20
. .
by precipitation from solutions of magnesium salts with ammonia [2013-01]
C01F 5/22
. .
from magnesium compounds with alkali hydroxides or alkaline- earth oxides or hydroxides [2013-01]
C01F 5/24
.
Magnesium carbonates [2013-01]
C01F 5/26
.
Magnesium halides [2013-01]
C01F 5/28
. .
Fluorides [2013-01]
C01F 5/30
. .
Chlorides [2013-01]
C01F 5/305
. . .
{Dehydrating ammonium or alkali magnesium chlorides, e.g. carnalite} [2013-01]
C01F 5/32
. . .
Preparation of anhydrous magnesium chloride by chlorinating magnesium compounds [2013-01]
C01F 5/34
. . .
Dehydrating magnesium chloride containing water of crystallisation [2013-01]
C01F 5/36
. .
Bromides [2013-01]
C01F 5/38
.
Magnesium nitrates [2013-01]
C01F 5/40
.
Magnesium sulfates (double sulfates of magnesium with sodium or potassium C01D 5/12, with other alkali metals {C01D 15/00}, C01D 17/00) [2013-01]
C01F 5/42
.
Magnesium sulfites [2013-01]
C01F 7/00
Compounds of aluminium [2013-01]
C01F 7/02
.
Aluminium oxide; Aluminium hydroxide; Aluminates [2013-01]
C01F 7/021
. .
After-treatment of oxides or hydroxides [2022-01]
C01F 7/022
. . .
Classification [2022-01]
C01F 7/023
. . .
Grinding, deagglomeration or disintegration [2022-01]
C01F 7/025
. . .
Granulation or agglomeration [2022-01]
C01F 7/026
. . .
Making or stabilising dispersions [2022-01]
C01F 7/027
. . .
Treatment involving fusion or vaporisation [2022-01]
C01F 7/028
. .
Beta-aluminas [2022-01]
C01F 7/04
. .
Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom (C01F 7/028 takes precedence) [2022-01]
C01F 7/043
. . .
Lithium aluminates [2022-01]
C01F 7/046
. . .
Stabilisation of aluminates [2022-01]
C01F 7/06
. . .
by treating aluminous minerals or waste-like raw materials with alkali hydroxide, e.g. leaching of bauxite according to the Bayer process (obtaining aluminium oxide or hydroxide from the resulting aluminate solution C01F 7/14) [2022-01]
C01F 7/0606
. . . .
Making-up the alkali hydroxide solution from recycled spent liquor [2022-01]
C01F 7/0613
. . . .
Pretreatment of the minerals, e.g. grinding [2022-01]
C01F 7/062
. . . .
Digestion [2022-01]
C01F 7/0626
. . . . .
Processes making use of tube digestion only [2022-01]
C01F 7/0633
. . . . .
characterised by the use of additives [2022-01]
C01F 7/064
. . . . .
Apparatus for digestion, e.g. digestor vessels or heat exchangers [2022-01]
C01F 7/0646
. . . .
Separation of the insoluble residue, e.g. of red mud [2022-01]
C01F 7/0653
. . . . .
characterised by the flocculant added to the slurry (final clarification of the aluminate solution C01F 7/47) [2022-01]
C01F 7/066
. . . .
Treatment of the separated residue [2022-01]
C01F 7/0666
. . . .
Process control or regulation [2022-01]
C01F 7/0673
. . . .
from phosphate-containing minerals [2022-01]
C01F 7/068
. . . .
from carbonate-containing minerals, e.g. dawsonite [2022-01]
C01F 7/0686
. . . .
from sulfate-containing minerals, e.g. alunite [2022-01]
C01F 7/0693
. . . .
from waste-like raw materials, e.g. fly ash or Bayer calcination dust [2022-01]
C01F 7/08
. . .
by treating aluminous minerals with sodium carbonate, e.g. sinter processes (C01F 7/0613, C01F 7/066 take precedence) [2022-01]
C01F 7/085
. . . .
according to the lime-sinter process [2022-01]
C01F 7/10
. . .
by treating aluminous minerals with alkali sulfates and reducing agents [2013-01]
C01F 7/12
. . .
Alkali metal aluminates from alkaline-earth metal aluminates [2013-01]
C01F 7/14
. . .
Aluminium oxide or hydroxide from alkali metal aluminates [2013-01]
C01F 7/141
. . . .
from aqueous aluminate solutions by neutralisation with an acidic agent [2022-01]
C01F 7/142
. . . . .
with carbon dioxide [2022-01]
C01F 7/144
. . . .
from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process [2022-01]
C01F 7/145
. . . . .
characterised by the use of a crystal growth modifying agent other than aluminium hydroxide seed [2022-01]
C01F 7/147
. . . . .
Apparatus for precipitation [2022-01]
C01F 7/148
. . . . .
Separation of the obtained hydroxide, e.g. by filtration or dewatering [2022-01]
C01F 7/16
. .
Preparation of alkaline-earth metal aluminates or magnesium aluminates; Aluminium oxide or hydroxide therefrom (C01F 7/028 takes precedence) [2022-01]
C01F 7/162
. . .
Magnesium aluminates [2022-01]
C01F 7/164
. . .
Calcium aluminates [2022-01]
C01F 7/166
. . .
Strontium aluminates [2022-01]
C01F 7/168
. . .
Barium aluminates [2022-01]
C01F 7/18
. . .
Aluminium oxide or hydroxide from alkaline earth metal aluminates [2022-01]
C01F 7/20
. .
Preparation of aluminium oxide or hydroxide from aluminous ores using acids or salts [2022-01]
C01F 7/22
. . .
with halides or halogen acids [2022-01]
C01F 7/24
. . .
with nitric acid or nitrogen oxides [2013-01]
C01F 7/26
. . .
with sulfuric acids or sulfates [2013-01]
C01F 7/28
. . .
with sulfurous acid [2013-01]
C01F 7/30
. .
Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds [2022-01]
C01F 7/302
. . .
Hydrolysis or oxidation of gaseous aluminium compounds in the gaseous phase [2022-01]
C01F 7/304
. . . .
of organic aluminium compounds [2022-01]
C01F 7/306
. . .
Thermal decomposition of hydrated chlorides, e.g. of aluminium trichloride hexahydrate [2022-01]
C01F 7/308
. . .
Thermal decomposition of nitrates [2022-01]
C01F 7/32
. . .
Thermal decomposition of sulfates including complex sulfates, e.g. alums [2022-01]
C01F 7/34
. .
Preparation of aluminium hydroxide by precipitation from solutions containing aluminium salts [2013-01]
C01F 7/36
. . .
from organic aluminium salts [2013-01]
C01F 7/38
. .
Preparation of aluminium oxide by thermal reduction of aluminous minerals [2013-01]
C01F 7/40
. . .
in the presence of aluminium sulfide [2013-01]
C01F 7/42
. .
Preparation of aluminium oxide or hydroxide from metallic aluminium, e.g. by oxidation [2013-01]
C01F 7/422
. . .
by oxidation with a gaseous oxidator at a high temperature [2022-01]
C01F 7/424
. . . .
using a plasma [2022-01]
C01F 7/426
. . .
by applying mechanical energy to solid aluminium at a low temperature [2022-01]
C01F 7/428
. . .
by oxidation in an aqueous solution [2022-01]
C01F 7/44
. .
Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water [2022-01]
C01F 7/441
. . .
by calcination [2022-01]
C01F 7/442
. . . .
in presence of a calcination additive [2022-01]
C01F 7/444
. . . .
Apparatus therefor [2022-01]
C01F 7/445
. . . .
making use of a fluidised bed [2022-01]
C01F 7/447
. . .
by wet processes [2022-01]
C01F 7/448
. . . .
using superatmospheric pressure, e.g. hydrothermal conversion of gibbsite into boehmite [2022-01]
C01F 7/46
. .
Purification of aluminium oxide, aluminium hydroxide or aluminates (C01F 7/028 takes precedence) [2022-01]
C01F 7/47
. . .
of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors [2022-01]
C01F 7/473
. . . .
Removal of organic compounds, e.g. sodium oxalate [2022-01]
C01F 7/476
. . . . .
by oxidation [2022-01]
C01F 7/48
.
Halides, with or without other cations besides aluminium [2022-01]
C01F 7/50
. .
Fluorides [2013-01]
C01F 7/52
. . .
Double compounds containing both fluorine and other halide groups [2022-01]
C01F 7/54
. . .
Double compounds containing both aluminium and alkali metals or alkaline-earth metals [2013-01]
C01F 7/56
. .
Chlorides (containing fluorine C01F 7/52) [2023-08]
C01F 7/57
. . .
Basic aluminium chlorides, e.g. polyaluminium chlorides [2023-08]
C01F 7/58
. . .
Preparation of anhydrous aluminium chloride [2013-01]
C01F 7/60
. . . .
from oxygen-containing aluminium compounds [2013-01]
C01F 7/62
. . .
Purification [2013-01]
C01F 7/64
. .
Bromides (containing fluorine C01F 7/52) [2013-01]
C01F 7/66
.
Nitrates, with or without other cations besides aluminium [2022-01]
C01F 7/68
.
Aluminium compounds containing sulfur [2022-01]
C01F 7/70
. .
Sulfides [2013-01]
C01F 7/72
. .
Sulfites [2013-01]
C01F 7/74
. .
Sulfates [2013-01]
C01F 7/741
. . .
Preparation from elemental aluminium or elemental aluminium containing materials, e.g. foil or dross [2022-01]
C01F 7/743
. . .
Preparation from silicoaluminious materials, e.g. clays or bauxite [2022-01]
C01F 7/745
. . .
Preparation from alums, e.g. alunite [2022-01]
C01F 7/746
. . .
After-treatment, e.g. dehydration or stabilisation [2022-01]
C01F 7/748
. . . .
Purification [2022-01]
C01F 7/76
. . .
Double salts, i.e. compounds containing, besides aluminium and sulfate ions, only other cations, e.g. alums [2022-01]
C01F 7/762
. . . .
Ammonium or alkali metal aluminium sulfates [2022-01]
C01F 7/765
. . . . .
Ammonium aluminium sulfates [2022-01]
C01F 7/767
. . . .
Alkaline earth metal aluminium sulfates [2022-01]
C01F 7/77
.
Aluminium carbonates [2022-01]
C01F 7/78
.
Compounds containing aluminium and two or more other elements, with the exception of oxygen and hydrogen (aluminates C01F 7/02; compounds containing aluminium, fluorine and alkali or alkaline earth metals C01F 7/54; nitrates containing other cations besides aluminium C01F 7/66; sulfides, sulfites or sulfates containing other cations besides aluminium C01F 7/70 - C01F 7/74) [2023-08]
C01F 7/782
. .
containing carbonate ions, e.g. dawsonite [2023-08]
C01F 7/784
. .
Layered double hydroxide, e.g. comprising nitrate, sulfate or carbonate ions as intercalating anions [2023-08]
C01F 7/785
. . .
Hydrotalcite [2022-01]
C01F 7/786
. .
containing, besides aluminium, only anions, e.g. Al[OH]xCly[SO4]z (mixed halides C01F 7/48) [2022-01]
C01F 7/788
. .
Ammonium aluminium fluorides, e.g. ammonium hexafluoroaluminate [2022-01]
C01F 11/00
Compounds of calcium, strontium, or barium (C01F 7/00 takes precedence) [2013-01]
C01F 11/005
.
{Preparation involving liquid-liquid extraction, absorption or ion-exchange} [2013-01]
C01F 11/02
.
Oxides or hydroxides (production of lime C04B 2/00) [2013-01]
C01F 11/04
. .
by thermal decomposition [2013-01]
C01F 11/06
. . .
of carbonates [2013-01]
C01F 11/08
. .
by reduction of sulfates [2013-01]
C01F 11/10
. .
from sulfides [2013-01]
C01F 11/12
. .
from silicates [2013-01]
C01F 11/16
. .
Purification [2013-01]
C01F 11/18
.
Carbonates [2013-01]
C01F 11/181
. .
{Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by control of the carbonation conditions} [2013-01]
C01F 11/182
. .
{Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds} [2013-01]
C01F 11/183
. . .
{the additive being an organic compound} [2013-01]
C01F 11/184
. .
{Preparation of calcium carbonate by carbonation of solutions based on non-aqueous solvents} [2013-01]
C01F 11/185
. .
{After-treatment, e.g. grinding, purification, conversion of crystal morphology} [2013-01]
C01F 11/186
. .
{Strontium or barium carbonate} [2013-01]
C01F 11/187
. . .
{Strontium carbonate} [2013-01]
C01F 11/188
. . .
{Barium carbonate} [2013-01]
C01F 11/20
.
Halides [2013-01]
C01F 11/22
. .
Fluorides [2013-01]
C01F 11/24
. .
Chlorides [2013-01]
C01F 11/26
. . .
from sulfides [2013-01]
C01F 11/28
. . .
by chlorination of alkaline-earth metal compounds [2013-01]
C01F 11/30
. . .
Concentrating; Dehydrating; Preventing the adsorption of moisture or caking [2013-01]
C01F 11/32
. . .
Purification [2013-01]
C01F 11/34
. .
Bromides [2013-01]
C01F 11/36
.
Nitrates [2013-01]
C01F 11/38
. .
Preparation with nitric acid or nitrogen oxides [2013-01]
C01F 11/40
. .
Preparation by double decomposition with nitrates [2013-01]
C01F 11/42
. .
Double salts (with magnesium C01F 5/38) [2013-01]
C01F 11/44
. .
Concentrating; Crystallisating; Dehydrating; Preventing the absorption of moisture or caking [2013-01]
C01F 11/46
.
Sulfates (dehydration of gypsum {for the production of calcium sulfate cements} C04B 11/02) [2013-01]
C01F 11/462
. .
{Sulfates of Sr or Ba} [2013-01]
C01F 11/464
. .
{Sulfates of Ca from gases containing sulfur oxides} [2013-01]
C01F 11/466
. .
{Conversion of one form of calcium sulfate to another} [2013-01]
C01F 11/468
. .
{Purification of calcium sulfates} [2013-01]
C01F 11/48
.
Sulfites [2013-01]
C01F 13/00
Compounds of radium [2013-01]
C01F 15/00
Compounds of thorium [2013-01]
​
C01F 17/00
Compounds of rare earth metals [2022-01]
NOTES

  • In this group, the following expression is used with the meaning indicated; "rare earth metals" means elements from the group of the lanthanides as well as scandium or yttrium, taken alone or in combination.
  • When classifying a compound in groups C01F 17/20 - C01F 17/38, then its specific preparation or treatment must also be classified in groups C01F 17/10 - C01F 17/17 as long as the compound is characterised by its preparation or treatment and vice versa.
C01F 17/10
.
Preparation or treatment, e.g. separation or purification [2022-01]
C01F 17/13
. .
by using ion exchange resins, e.g. chelate resins [2022-01]
C01F 17/17
. .
involving a liquid-liquid extraction [2022-01]
C01F 17/20
.
Compounds containing only rare earth metals as the metal element [2022-01]
C01F 17/206
. .
oxide or hydroxide being the only anion [2022-01]
C01F 17/212
. . .
Scandium oxides or hydroxides [2022-01]
C01F 17/218
. . .
Yttrium oxides or hydroxides [2022-01]
C01F 17/224
. . .
Oxides or hydroxides of lanthanides [2022-01]
C01F 17/229
. . . .
Lanthanum oxides or hydroxides [2022-01]
C01F 17/235
. . . .
Cerium oxides or hydroxides [2022-01]
C01F 17/241
. . .
containing two or more rare earth metals, e.g. NdPrO3 or LaNdPrO3 [2022-01]
C01F 17/247
. .
Carbonates [2020-01]
C01F 17/253
. .
Halides [2022-01]
C01F 17/259
. . .
Oxyhalides [2022-01]
C01F 17/265
. . .
Fluorides [2020-01]
C01F 17/271
. . .
Chlorides [2020-01]
C01F 17/276
. .
Nitrates [2020-01]
C01F 17/282
. .
Sulfates [2020-01]
C01F 17/288
. .
Sulfides [2020-01]
C01F 17/294
. . .
Oxysulfides [2020-01]
C01F 17/30
.
Compounds containing rare earth metals and at least one element other than a rare earth metal, oxygen or hydrogen, e.g. La4S3Br6 (C01F 17/247 - C01F 17/294 take precedence) [2020-01]
C01F 17/32
. .
oxide or hydroxide being the only anion, e.g. NaCeO2 or MgxCayEuO [2020-01]
C01F 17/34
. . .
Aluminates, e.g. YAlO3 or Y3-xGdxAl5O12 [2020-01]
C01F 17/36
. .
halogen being the only anion, e.g. NaYF4 [2020-01]
C01F 17/38
. .
sulfur being the only anion, e.g. CaLa2S4 [2020-01]