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Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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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 31/30; 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
}
)
Methods of preparing compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or the rare earths, in general
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Compounds of beryllium
C01F 3/005
.
{
Fluorides or double fluorides of beryllium with alkali metals or ammonium; Preparation of beryllium compounds therefrom
}
C01F 3/02
.
Oxides; Hydroxides
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Compounds of magnesium
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C01F 5/02
.
Magnesia
C01F 5/04
. .
by oxidation of metallic magnesium
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C01F 5/06
. .
by thermal decomposition of magnesium compounds (calcining magnesite or dolomite C04B 2/10)
C01F 5/08
. . .
by calcining magnesium hydroxide
C01F 5/10
. . .
by thermal decomposition of magnesium chloride with water vapour
C01F 5/12
. . .
by thermal decomposition of magnesium sulfate, with or without reduction
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C01F 5/14
.
Magnesium hydroxide
C01F 5/145
. .
{
Purification
}
C01F 5/16
. .
by treating magnesia, e.g. calcined dolomite, with water or solutions of salts not containing magnesium
C01F 5/20
. .
by precipitation from solutions of magnesium salts with ammonia
C01F 5/22
. .
from magnesium compounds with alkali hydroxides or alkaline- earth oxides or hydroxides
C01F 5/24
.
Magnesium carbonates
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C01F 5/26
.
Magnesium halides
C01F 5/28
. .
Fluorides
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C01F 5/30
. .
Chlorides
C01F 5/305
. . .
{
Dehydrating ammonium or alkali magnesium chlorides, e.g. carnalite
}
C01F 5/32
. . .
Preparation of anhydrous magnesium chloride by chlorinating magnesium compounds
C01F 5/34
. . .
Dehydrating magnesium chloride containing water of crystallisation
C01F 5/36
. .
Bromides
C01F 5/38
.
Magnesium nitrates
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)
C01F 5/42
.
Magnesium sulfites
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Compounds of aluminium
C01F 7/001
.
{
Aluminium carbonate
}
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.
{
Compounds containing, besides aluminium, two or more other elements, with the exception of oxygen and hydrogen (compounds containing aluminium, fluorine and alkali or alkaline earth metals C01F 7/54; compounds containing sulfur and other cations besides aluminium C01F 7/68)
}
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C01F 7/004
. .
{
containing carbonate ions, e.g. dawsonite
}
C01F 7/005
. . .
{
Hydrotalcite
}
. .
{
containing, besides aluminium, only anions, e.g. Al(OH)xCLy(SO4)z (mixed halides C01F 7/48)
}
C01F 7/008
. .
{
Ammonium aluminium fluorides
}
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.
Aluminium oxide; Aluminium hydroxide; Aluminates
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. .
{
After-treatment of oxides or hydroxides
}
C01F 7/022
. . .
{
Classification
}
C01F 7/023
. . .
{
Grinding, deagglomeration, disintegration
}
C01F 7/025
. . .
{
Granulation, agglomeration
}
C01F 7/026
. . .
{
Making or stabilising dispersions
}
C01F 7/027
. . .
{
Treatment involving fusion or vaporisation
}
C01F 7/028
. .
{
Beta-aluminas
}
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. .
Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
{
(C01F 7/028 takes precedence)
}
C01F 7/043
. . .
{
Lithium aluminate
}
C01F 7/046
. . .
{
Stabilisation of aluminates
}
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. . .
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)
}
C01F 7/0606
. . . .
{
Make-up of the alkali hydroxide solution from recycled spent liquor
}
C01F 7/0613
. . . .
{
Pretreatment of the minerals, e.g. grinding
}
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C01F 7/062
. . . .
{
Digestion
}
C01F 7/0626
. . . . .
{
Processes making use of tube digestion only
}
C01F 7/0633
. . . . .
{
characterised by the use of additives
}
C01F 7/064
. . . . .
{
Apparatus for digestion, e.g. digestor vessels, heat exchangers
}
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C01F 7/0646
. . . .
{
Separation of the insoluble residue, e.g. red mud
}
. . . . .
{
characterised by the flocculant added to the slurry (final clarification of the aluminate solution C01F 7/47)
}
C01F 7/066
. . . .
{
Treatment of the separated residue
}
C01F 7/0666
. . . .
{
Process control or regulation (control per seG05)
}
C01F 7/0673
. . . .
{
from phosphate-containing minerals
}
C01F 7/068
. . . .
{
from carbonate-containing minerals, e.g. dawsonite
}
C01F 7/0686
. . . .
{
from sulfate-containing minerals, e.g. alunite
}
C01F 7/0693
. . . .
{
from waste-like raw materials, e.g. fly ash, Bayer calcination dust
}
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C01F 7/08
. . .
by treating aluminous minerals with sodium carbonate,
{
e.g. sinter processes (C01F 7/0613 and C01F 7/066 take precedence)
}
C01F 7/085
. . . .
{
according to the lime-sinter process
}
C01F 7/10
. . .
by treating aluminous minerals with alkali sulfates and reducing agents
C01F 7/12
. . .
Alkali metal aluminates from alkaline-earth metal aluminates
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C01F 7/14
. . .
Aluminium oxide or hydroxide from alkali metal aluminates
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C01F 7/141
. . . .
{
from aqueous aluminate solutions by neutralisation with an acidic agent
}
C01F 7/142
. . . . .
{
with carbon dioxide
}
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C01F 7/144
. . . .
{
from aqueous aluminate solutions by precipitation due to cooling, e.g. as part of the Bayer process
}
C01F 7/145
. . . . .
{
characterised by a crystal growth modifying agent other than aluminium hydroxide seed
}
C01F 7/147
. . . . .
{
Apparatus for precipitation
}
C01F 7/148
. . . . .
{
Separation of the obtained hydroxide, e.g. filtration, dewatering
}
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. .
Preparation of alkaline-earth metal aluminates
{
or magnesium aluminate
}
; Aluminium oxide or hydroxide therefrom
{
(C01F 7/028 takes precedence)
}
C01F 7/162
. . .
{
Magnesium aluminates
}
C01F 7/164
. . .
{
Calcium aluminates
}
C01F 7/166
. . .
{
Strontium aluminates
}
C01F 7/168
. . .
{
Barium aluminates
}
C01F 7/18
. . .
Aluminium oxide or hydroxide from alkaline-earth metal aluminates
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C01F 7/20
. .
Preparation of aluminium oxide or hydroxide from aluminous ores with acids or salts
C01F 7/22
. . .
with halides
{
or halogen acids
}
C01F 7/24
. . .
with nitric acid or nitrogen oxides
C01F 7/26
. . .
with sulfuric acids or sulfates
C01F 7/28
. . .
with sulfurous acid
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C01F 7/30
. .
Preparation of aluminium oxide or hydroxide by thermal decomposition
{
or by hydrolysis or oxidation
}
of aluminium compounds
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. . .
{
Hydrolysis or oxidation of gaseous aluminium compounds in the gas phase
}
C01F 7/304
. . . .
{
of organic aluminium compounds
}
C01F 7/306
. . .
{
Thermal decomposition of hydrated chlorides, e.g. aluminium trichloride hexahydrate
}
C01F 7/308
. . .
{
Thermal decomposition of nitrates
}
C01F 7/32
. . .
{
Thermal decomposition
}
of sulfates
{
including complex sulfates, e.g. alums
}
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C01F 7/34
. .
Preparation of aluminium hydroxide by precipitation from solutions containing aluminium salts
. . .
from organic aluminium salts
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C01F 7/38
. .
Preparation of aluminium oxide by thermal reduction of aluminous minerals
C01F 7/40
. . .
in the presence of aluminium sulfide
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C01F 7/42
. .
Preparation of aluminium oxide or hydroxide from metallic aluminium, e.g. by oxidation
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C01F 7/422
. . .
{
by oxidation with a gaseous oxidator at a high temperature
}
C01F 7/424
. . . .
{
using a plasma
}
C01F 7/426
. . .
{
by applying mechanical energy to solid aluminium at a low temperature
}
C01F 7/428
. . .
{
by oxidation in an aqueous solution
}
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C01F 7/44
. .
Dehydration of aluminium
{
oxide or
}
hydroxide,
{
i.e. all conversions of one form into another involving a loss of water
}
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C01F 7/441
. . .
{
by calcination
}
C01F 7/442
. . . .
{
in presence of a calcination additive
}
C01F 7/444
. . . .
{
Apparatus therefor
}
C01F 7/445
. . . .
{
making use of a fluidised bed
}
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C01F 7/447
. . .
{
by wet processes
}
C01F 7/448
. . . .
{
using superatmospheric pressure, e.g. hydrothermal conversion of gibbsite into boehmite
}
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C01F 7/46
. .
Purification of aluminium oxide, aluminium hydroxide or aluminates
{
(C01F 7/028 takes precedence)
}
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C01F 7/47
. . .
of aluminates,
{
e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors
}
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C01F 7/473
. . . .
{
Removal of organic compounds, e.g. sodium oxalate
}
C01F 7/476
. . . . .
{
by oxidation
}
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C01F 7/48
.
Aluminium halides
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C01F 7/50
. .
Fluorides
C01F 7/52
. . .
Double compounds containing both fluorine and other acid
{
halide
}
groups
C01F 7/54
. . .
Double compounds containing both aluminium and alkali metals or alkaline-earth metals
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C01F 7/56
. .
Chlorides (containing fluorine C01F 7/52)
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C01F 7/58
. . .
Preparation of anhydrous aluminium chloride
C01F 7/60
. . . .
from oxygen-containing aluminium compounds
C01F 7/62
. . .
Purification
C01F 7/64
. .
Bromides (containing fluorine C01F 7/52)
C01F 7/66
.
Aluminium nitrates (containing fluorine
{
C01F 7/002
}
)
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C01F 7/68
.
Aluminium compounds containing sulfur (containing fluorine
{
C01F 7/002
}
)
C01F 7/70
. .
Sulfides
C01F 7/72
. .
Sulfites
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C01F 7/74
. .
Sulfates
C01F 7/741
. . .
{
Preparation from elemental aluminium or elemental aluminium containing materials, e.g. foil, dross
}
C01F 7/743
. . .
{
Preparation from silicoaluminious materials, e.g. clays, bauxite
}
C01F 7/745
. . .
{
Preparation from alums, e.g. alunite
}
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C01F 7/746
. . .
{
After-treatment, e.g. dehydration, stabilisation
}
C01F 7/748
. . . .
{
Purification
}
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C01F 7/76
. . .
Double salts,
{
i.e. compounds containing, besides aluminium and sulfate ions, only other cations
}
, e.g. alums
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C01F 7/762
. . . .
{
Ammonium or alkali metal aluminium sulfates
}
C01F 7/765
. . . . .
{
Ammonium aluminium sulfates
}
C01F 7/767
. . . .
{
Alkaline earth metal aluminium sulfates
}
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Compounds of calcium, strontium, or barium (C01F 7/00 takes precedence)
C01F 11/005
.
{
Preparation involving liquid-liquid extraction, absorption or ion-exchange
}
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C01F 11/02
.
Oxides or hydroxides (production of lime C04B 2/00)
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C01F 11/04
. .
by thermal decomposition
C01F 11/06
. . .
of carbonates
C01F 11/08
. .
by reduction of sulfates
C01F 11/10
. .
from sulfides
C01F 11/12
. .
from silicates
C01F 11/16
. .
Purification
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C01F 11/18
.
Carbonates
C01F 11/181
. .
{
Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by control of the carbonation conditions
}
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C01F 11/182
. .
{
Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
}
C01F 11/183
. . .
{
the additive being an organic compound
}
C01F 11/184
. .
{
Preparation of calcium carbonate by carbonation of solutions based on non-aqueous solvents
}
. .
{
After-treatment, e.g. grinding, purification, conversion of crystal morphology
}
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C01F 11/186
. .
{
Strontium or barium carbonate
}
C01F 11/187
. . .
{
Strontium carbonate
}
C01F 11/188
. . .
{
Barium carbonate
}
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C01F 11/20
.
Halides
C01F 11/22
. .
Fluorides
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C01F 11/24
. .
Chlorides
C01F 11/26
. . .
from sulfides
C01F 11/28
. . .
by chlorination of alkaline-earth metal compounds
C01F 11/30
. . .
Concentrating; Dehydrating; Preventing the adsorption of moisture or caking
C01F 11/32
. . .
Purification
C01F 11/34
. .
Bromides
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C01F 11/36
.
Nitrates
C01F 11/38
. .
Preparation with nitric acid or nitrogen oxides
C01F 11/40
. .
Preparation by double decomposition with nitrates
C01F 11/42
. .
Double salts (with magnesium C01F 5/38)
C01F 11/44
. .
Concentrating; Crystallisating; Dehydrating; Preventing the absorption of moisture or caking
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.
Sulfates (dehydration of gypsum
{
for the production of calcium sulfate cements
}
C04B 11/02)
C01F 11/462
. .
{
Sulfates of Sr or Ba
}
C01F 11/464
. .
{
Sulfates of Ca from gases containing sulfur oxides
}
. .
{
Conversion of one form of calcium sulfate to another
}
C01F 11/468
. .
{
Purification of calcium sulfates
}
C01F 11/48
.
Sulfites
Compounds of radium
Compounds of thorium
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Compounds of the rare earth metals, i.e. scandium, yttrium, lanthanum, or the group of the lanthanides
NOTE
-
In this group "rare earth metals" means one single element or a combination of elements taken from the group as specified above

C01F 17/0006
.
{
Preparation involving a liquid-liquid extraction, an adsorption or an ion exchange
}
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C01F 17/0012
.
{
Compounds containing besides rare earth metals two or more other element with the exception of oxygen or hydrogen, e.g. La4S3Br6 or ternary oxides or hydroxides, e.g. NaCeO2
}
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C01F 17/0018
. .
{
Oxygen being the only anion
}
C01F 17/0025
. . .
{
Aluminates
}
. .
{
Halogen being the only anion (compounds containing besides rare earth metals only different halogens, e.g. Sc C01F 17/0056)
}
C01F 17/0037
. .
{
Sulfur being the only anion
}
.
{
Oxides or hydroxides (ternary oxides or hydroxides, e.g. NaCeO2 C01F 17/0018)
}
C01F 17/005
.
{
Carbonates
}
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C01F 17/0056
.
{
Halides
}
C01F 17/0062
. .
{
Fluorides
}
C01F 17/0068
. .
{
Chlorides
}
C01F 17/0075
.
{
Nitrates
}
C01F 17/0081
.
{
Sulfates
}
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C01F 17/0087
.
{
Sulfides
}
C01F 17/0093
. .
{
Oxysulfides
}
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Last Modified: 10/10/2013