WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

C01D　COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM (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 C01B 17/22; 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 and cyanogen, containing nitrogen and other non-metals C01B 21/082}; metal amides C01B 21/092; nitrites C01B 21/50; phosphides 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; cyanides C01C 3/08; salts of cyanic acid C01C 3/14; salts of cyanamide C01C 3/16; thiocyanates C01C 3/20)

C01D 1/00 Oxides or hydroxides of sodium, potassium or alkali metals in general

C01D 1/02 ・Oxides

C01D 1/04 ・Hydroxides

C01D 1/20 ・・Preparation by reacting oxides or hydroxides with alkali metal salts

C01D 1/22 ・・・with carbonates or bicarbonates

C01D 1/24 ・・・from or via fluorides or silico-fluorides

C01D 1/26 ・・Preparation from or via cyano compounds, e.g. cyanides, cyanamides

C01D 1/28 ・・Purification; Separation

C01D 1/30 ・・・by crystallisation

C01D 1/32 ・・・by absorption or precipitation

C01D 1/34 ・・・with selective solvents

C01D 1/36 ・・・by oxidation

C01D 1/38 ・・・by dialysis

C01D 1/40 ・・・by electrolysis

C01D 1/42 ・・Concentration; Dehydration

C01D 1/44 ・・Preparation in the form of granules, pieces, or other shaped products

C01D 3/00 Halides of sodium, potassium or alkali metals in general {(halides in general C01B 9/00)}

C01D 3/02 ・Fluorides

C01D 3/04 ・Chlorides

C01D 3/06 ・・Preparation by working up brines; seawater or spent lyes

C01D 3/08 ・・Preparation by working up natural or industrial salt mixtures or siliceous minerals

C01D 3/10 ・Bromides

C01D 3/12 ・Iodides

C01D 3/14 ・Purification

C01D 3/145 ・・{by solid ion-exchangers or solid chelating agents}

C01D 3/16 ・・by precipitation or adsorption {(C01D 3/145 takes precedence)}

C01D 3/18 ・・with selective solvents

C01D 3/20 ・・by melting

C01D 3/22 ・Preparation in the form of granules, pieces, or other shaped products

C01D 3/24 ・・Influencing the crystallisation process

C01D 3/26 ・Preventing the absorption of moisture or caking of the crystals

C01D 5/00 Sulfates or sulfites of sodium, potassium or alkali metals in general {(sulfites in general C01B 17/62)}

C01D 5/002 ・{Preventing the absorption of moisture or caking of the crystals by additives}

C01D 5/004 ・{Preparation in the form of granules, pieces or other shaped products}

C01D 5/006 ・{Recovery of sodium sulfate from coagulation baths for the spinning of viscose}

C01D 5/008 ・{Preparation of potassium sulfate from alunite}

C01D 5/02 ・Preparation of sulfates from alkali metal salts and sulfuric acid or bisulfates; Preparation of bisulfates

C01D 5/04 ・Preparation of sulfates with the aid of sulfurous acid or sulfites, e.g. Hargreaves process {(pyrosulfites or metabisulfites C01D 5/145)}

C01D 5/06 ・Preparation of sulfates by double decomposition

C01D 5/08 ・・with each other or with ammonium sulfate

C01D 5/10 ・・with sulfates of magnesium, calcium, strontium, or barium

C01D 5/12 ・Preparation of double sulfates of magnesium with sodium or potassium

C01D 5/14 ・Preparation of sulfites (C01D 5/04 takes precedence)

C01D 5/145 ・・{Pyrosulfites or metabisulfites}

C01D 5/16 ・Purification {(C01D 5/145 takes precedence)}

C01D 5/18 ・Dehydration {(C01D 5/145 takes precedence)}

C01D 7/00 Carbonates of sodium, potassium or alkali metals in general

C01D 7/02 ・Preparation by double decomposition

C01D 7/04 ・・with a fluoride or silico-fluoride (C01D 1/24 takes precedence)

C01D 7/06 ・Preparation via sodium or potassium magnesium carbonate

C01D 7/07 ・Preparation from the hydroxides

C01D 7/08 ・Preparation from or via cyano compounds of sodium or potassium (C01D 1/26 takes precedence)

C01D 7/10 ・Preparation of bicarbonates from carbonates (ammonia soda process C01D 7/18)

C01D 7/12 ・Preparation of carbonates from bicarbonates {or bicarbonate-containing product}

C01D 7/123 ・・{by thermal decomposition of solids in the absence of a liquid medium}

C01D 7/126 ・・{Multi-step processes, e.g. from trona to soda ash}

C01D 7/14 ・Preparation of sesquicarbonates

C01D 7/16 ・Preparation from compounds of sodium or potassium with amines and carbon dioxide

C01D 7/18 ・Preparation by the ammonia-soda process {(C01D 7/12 takes precedence)}

C01D 7/22 ・Purification

C01D 7/24 ・・Crystallisation

C01D 7/26 ・・by precipitation or adsorption

C01D 7/28 ・・with selective solvents

C01D 7/30 ・・by oxidation

C01D 7/32 ・・by dialysis

C01D 7/34 ・・by electrolysis

C01D 7/35 ・Varying the content of water of crystallisation or the specific gravity {(calcination B01J 6/00, F27B)}

C01D 7/37 ・・Densifying sodium carbonate

C01D 7/38 ・Preparation in the form of granules, pieces or other shaped products

C01D 7/40 ・・influencing the crystallisation process

C01D 7/42 ・Preventing the absorption of moisture or caking

C01D 9/00 Nitrates of sodium, potassium or alkali metals in general {(preparation as fertilizers or of fertilizers containing them C05D 5/00)}

C01D 9/02 ・Preparation by working-up natural salt mixtures

C01D 9/04 ・Preparation with liquid nitric acid

C01D 9/06 ・Preparation with gaseous nitric acid or nitrogen oxides

C01D 9/08 ・Preparation by double decomposition

C01D 9/10 ・・with ammonium nitrate

C01D 9/12 ・・with nitrates or magnesium, calcium, strontium, or barium

C01D 9/14 ・・of salts of potassium with sodium nitrate

C01D 9/16 ・Purification

C01D 9/18 ・Preparation in the form of shaped products, e.g. granules

C01D 9/20 ・Preventing the absorption of moisture or caking

C01D 13/00 Compounds of sodium or potassium not provided for elsewhere

C01D 15/00 Lithium compounds

C01D 15/005 ・{Lithium hexafluorophosphate}

C01D 15/02 ・Oxides; Hydroxides

C01D 15/04 ・Halides

C01D 15/06 ・Sulfates; Sulfites

C01D 15/08 ・Carbonates; Bicarbonates

C01D 15/10 ・Nitrates

C01D 17/00 Rubidium, caesium or francium compounds

C01D 17/003 ・{Compounds of alkali metals}

C01D 17/006 ・・{Preparation of potassium compounds comprising precipitating potassium ions by an organic reagent or extracting them by a liquid organic phase}