| 摘要 |
Carbonaceous material, including wood based material, coal, lignite, peat and like carbonaceous material, is ground to a fine state, either with or without previous drying procedures, added to water and aqueous alkali to form a paste, exhibiting gel like properties and extruded to form pellets or applied as a slurry to a tray or pan or similar drying area and allowed to dry or is subjected to forced drying. The dried or partially dried carbonaceous material which has been so treated is then leached using water at a temperature between 0<o>C and 1000<o>C or with dilute aqueous acid or alkali between such temperatures. The leached material is then dried to form a hard compact product. The carbonaceous products so formed by this process have an altered mineral and inorganic content and good resistance to abrasion on drying. Such alteration to the inorganic and mineral content may be beneficial in processes such as combustion, gasification, carbonization, ion exchange processes and in liquefaction processes. The treatment may be adjusted so as to produce a carbonaceous material containing elements, principally metals, in intimate contact with the carbonaceous material as may be advantageous in subsequent processes. Alternatively the inorganic and mineral contents may be altered or reduced to obviate problems associated with their presence in subsequent processes. |
