2948.     ---------------.  [RUHRCHEMIE, A.-G.]  [Recovery of Thorium.]  FIAT Reel K-21, 1942, frames 806-892; PB 70,212; TOM Reel 288.

        Paper reports all the experimental and practical work performed on the development of a method for recovering Th from the catalysts used in the hydrogenation of CO.  The results of the entire work are contained in a patent application.  The method consists in precipitating Th-K₂SO₄ from the Fe-Th sediments obtained by precipitation by adding K₂SO₄.  After separation and washing, this is transformed into Th bicarbonate by boiling in concentrated soda solution.