| 1/00 | Flotation |
| 1/001 | Flotation Flotation agents |
| 1/002 | Flotation Flotation agents Inorganic compounds |
| 1/004 | Flotation Flotation agents Organic compounds |
| 1/006 | Flotation Flotation agents Organic compounds Hydrocarbons |
| 1/008 | Flotation Flotation agents Organic compounds containing oxygen |
| 1/01 | Flotation Flotation agents Organic compounds containing nitrogen |
| 1/012 | Flotation Flotation agents Organic compounds containing sulfur |
| 1/014 | Flotation Flotation agents Organic compounds containing phosphorus |
| 1/016 | Flotation Flotation agents Organic compounds Macromolecular compounds |
| 1/018 | Flotation Flotation agents Mixtures of inorganic and organic compounds |
| 1/02 | Flotation Froth-flotation processes |
| 1/04 | Flotation Froth-flotation processes by varying ambient atmospheric pressure |
| 1/06 | Flotation Froth-flotation processes differential |
| 1/08 | Flotation Subsequent treatment of concentrated product |
| 1/10 | Flotation Subsequent treatment of concentrated product Removing adhering liquid from separated materials |
| 1/12 | Flotation Agent recovery |
| 1/14 | Flotation Flotation machines (devices for feeding measured quantities of reagents B01J 4/02
) |
| 1/16 | Flotation Flotation machines (devices for feeding measured quantities of reagents B01J 4/02
) with impellers; Subaeration machines |
| 1/18 | Flotation Flotation machines (devices for feeding measured quantities of reagents B01J 4/02
) with impellers; Subaeration machines without air supply |