2960. ---------------. [RUHRCHEMIE, A.-G.] [Preparation of Iron Oxide for Iron Catalysts.] FIAT Reel K-29, 1939, frames 6,926-6,929; PB 70,218; TOM Reel 296. Different electrical smelting processes for the preparation of nonconducting Fe oxide for catalysts are considered. Nothing different from the usual process is given. 1 drawing. |