| 摘要 |
<p>1,199,450. Obtaining metals. E.M. VAN DORNICK. Aug. 9, 1967 [Oct. 21, 1966], No. 36654/67. Heading C7D. Metal is obtained by introducing pellets of ground metalliferous slag-forming material admixed with carbonaceous reducing material into a flowing, horizontal, molten slag layer within a furnace whereby the metalliferous material is reduced to produce a flowing layer of metal below the slag. As shown, pellets 30 are fed into slag layer 18 in reduction zone Z1 of furnace 10. Slag layer 18 is partially drawn off at channel 37, the remainder continuing as layer 18a into refining zone Z2 and ultimately being withdrawn at outlet 20. Metal layer 19, which is formed by reduction in zone Z1, flows as layer 19a into zone Z2 where it may be treated as by oxygen lances 40, or with fluxes, carbon and alloying additives through feeders 41, before being withdrawn through outlet 23. The production of iron, steel, stainless steel, chromium, nickel, manganese, molybdenum, vanadium and aluminium, from various ores, minerals &c., is referred to. Suitable carbonaceous reducing material is coal, coke, carbon and bitumen. The pellets may also contain a fluxing agent such as limestone, dolomite, fluorspar, bitumen and glass, and a binder such as tar, asphalt, resins, pulp mill wastes, waste polymers, molasses, starches, coal tar, native bitumens, kaolin clay, montmorillonite, slag, portland cement, lime, fullers earth and magnesium oxychloride .</p> |
