| 1/00 | Preliminary treatment of ores or scrap |
| 1/02 | Preliminary treatment of ores or scrap Roasting processes (C22B 1/16 takes precedence) |
| 1/04 | Preliminary treatment of ores or scrap Roasting processes (C22B 1/16 takes precedence) Blast roasting |
| 1/06 | Preliminary treatment of ores or scrap Roasting processes (C22B 1/16 takes precedence) Sulfating roasting |
| 1/08 | Preliminary treatment of ores or scrap Roasting processes (C22B 1/16 takes precedence) Chloridising roasting |
| 1/10 | Preliminary treatment of ores or scrap Roasting processes (C22B 1/16 takes precedence) in fluidised form |
| 1/11 | Preliminary treatment of ores or scrap Removing sulfur, phosphorus or arsenic, other than by roasting |
| 1/14 | Preliminary treatment of ores or scrap Agglomerating; Briquetting; Binding; Granulating |
| 1/16 | Preliminary treatment of ores or scrap Agglomerating; Briquetting; Binding; Granulating Sintering; Agglomerating |
| 1/18 | Preliminary treatment of ores or scrap Agglomerating; Briquetting; Binding; Granulating Sintering; Agglomerating in sinter pots |
| 1/20 | Preliminary treatment of ores or scrap Agglomerating; Briquetting; Binding; Granulating Sintering; Agglomerating in sintering machines with movable grates |
| 1/212 | Preliminary treatment of ores or scrap Agglomerating; Briquetting; Binding; Granulating Sintering; Agglomerating in tunnel furnaces |
| 1/214 | Preliminary treatment of ores or scrap Agglomerating; Briquetting; Binding; Granulating Sintering; Agglomerating in shaft furnaces |
| 1/216 | Preliminary treatment of ores or scrap Agglomerating; Briquetting; Binding; Granulating Sintering; Agglomerating in rotary furnaces |
| 1/22 | Preliminary treatment of ores or scrap Agglomerating; Briquetting; Binding; Granulating Sintering; Agglomerating in other sintering apparatus |
| 1/24 | Preliminary treatment of ores or scrap Agglomerating; Briquetting; Binding; Granulating Binding; Briquetting |
| 1/242 | Preliminary treatment of ores or scrap Agglomerating; Briquetting; Binding; Granulating Binding; Briquetting with binders |
| 1/243 | Preliminary treatment of ores or scrap Agglomerating; Briquetting; Binding; Granulating Binding; Briquetting with binders inorganic |
| 1/244 | Preliminary treatment of ores or scrap Agglomerating; Briquetting; Binding; Granulating Binding; Briquetting with binders organic |
| 1/245 | Preliminary treatment of ores or scrap Agglomerating; Briquetting; Binding; Granulating Binding; Briquetting with binders organic with carbonaceous material for the production of coked agglomerates |