|  | C |
SECTION C — CHEMISTRY AND METALLURGY

CHEMISTRY

|  | C05 |
MANUFACTURE OF FERTILISERS

|  | C05 |
Note(s) An ingredient in a mixture of fertilisers, or a single fertiliser which contains more than one of the chemical elements on which the subdivision into sub-classes is based, is classified only in the first of the appropriate sub-classes. Thus, a nitrophosphate or an ammoniated superphosphate is classified in Fulltext... Hierarchy... Expanded...C05B but not in Fulltext... Hierarchy... Expanded...C05C, magnesium phosphate is classified in Fulltext... Hierarchy... Expanded...C05B but not in Fulltext... Hierarchy... Expanded...C05D, and calcium cyanamide in Fulltext... Hierarchy... Expanded...C05C but not in Fulltext... Hierarchy... Expanded...C05D. In this class it is desirable to add, in conformity with paragraph 61 of the Guide, after the double oblique stroke the symbols relating to complementary information concerning individual constituents of an invention unit which is already classified as such. This complementary information concerns the indication of ingredients of a mixture of different fertilisers or of fertilisers with non-fertilisers.

|  | C05B |
PHOSPHATIC FERTILISERS

|  | C05B 1/00 |
Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulphuric or phosphoric acid in such amounts and concentrations as to yield solid products directly

|  | C05B 1/02 |
· | Superphosphates

|  | C05B 1/04 |
· | Double-superphosphate; Triple-superphosphate; Other fertilisers based essentially on monocalcium phosphate

|  | C05B 1/06 |
· | Ammoniation of superphosphates (fertilisers based essentially on ammonium orthophosphate Fulltext... Hierarchy... Expanded...C05B 7/00)

|  | C05B 1/10 |
· | Apparatus for the manufacture of superphosphates

|  | C05B 3/00 |
Fertilisers based essentially on di-calcium phosphate (Fulltext... Hierarchy... Expanded...C05B 11/00 takes precedence)

|  | C05B 5/00 |
Thomas phosphate; Other slag phosphates

|  | C05B 7/00 |
Fertilisers based essentially on alkali or ammonium orthophosphates (Fulltext... Hierarchy... Expanded...C05B 11/00 takes precendence)

|  | C05B 9/00 |
Fertilisers based essentially on phosphates or double phosphates of magnesium (Fulltext... Hierarchy... Expanded...C05B 11/00 takes precedence)

|  | C05B 11/00 |
Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes

|  | C05B 11/02 |
· | Pretreatment

|  | C05B 11/04 |
· | using mineral acid

|  | C05B 11/06 |
· · | using nitric acid (nitrophosphates)

|  | C05B 11/08 |
· · | using sulphuric acid

|  | C05B 11/10 |
· · | using orthophosphoric acid

|  | C05B 11/12 |
· · | using aqueous hydrochloric acid

|  | C05B 11/14 |
· · | using wet gaseous acids

|  | C05B 11/16 |
· | using alkaline lyes

|  | C05B 13/00 |
Fertilisers produced by pyrogenic processes from phosphatic materials

|  | C05B 13/02 |
· | from rock phosphates (Fulltext... Hierarchy... Expanded...C05B 13/06 takes precedence)

|  | C05B 13/04 |
· | from metallic phosphorus compounds, e.g. ferro-phosphorus

|  | C05B 13/06 |
· | Alkali and alkaline earth meta- or polyphosphate fertilisers

|  | C05B 15/00 |
Organic phosphatic fertilisers (bone meal Fulltext... Hierarchy... Expanded...C05B 17/00)

|  | C05B 17/00 |
Other phosphatic fertilisers, e.g. soft rock phosphates, bone meal

|  | C05B 17/02 |
· | containing manganese

|  | C05B 19/00 |
Granulation or pelletisation of phosphatic fertilisers other than slag (granulating apparatus Fulltext... Hierarchy... Expanded...B01J 2/00; granulating slag Fulltext... Hierarchy... Expanded...C04B)

|  | C05B 19/02 |
· | of superphosphates or mixtures containing them

|  | C05B 21/00 |
Mixtures of phosphatic fertilisers