By Ingeborg Hinz, Karl Koeber, Irmingard Kreuzbichler, Peter Kuhn, Arnulf Seidel (auth.), Ingeborg Hinz, Hans Karl Kugler, Joachim Wagner (eds.)
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Extra info for Be Beryllium: Supplement Volume A1 The Element. Production, Atom, Molecules, Chemical Behavior, Toxicology
4  56/8; Soviet J. 4  70/2).  J. T. May, C. L. S. Bur. Mines Rept. Invest. No. A. 57 14775).  Deutsche GoLd- und SiLber-ScheideanstaLt vorm. RoessLer (Fr. 858443 [1938/40] 1/5; C. 1941 II 807).  H. von Zeppelin, K. Hoffmann, H. KaLhammer (Ger. A. 64  4674).  R. 0. Bach, BeryLlium MetaLs & ChemicaLs Corp. S. A. 65  373).  Beryllium MetaLs & ChemicaLs Corp. (Fr. A. 67  No. 75525).  R. 0. Bach, BeryLlium MetaLs & ChemicaLs Corp. (Brit. A.
E. Burke, The Metal Beryllium, Cleveland, Ohio, 1955, pp. 63/70, 66).  H. Kawecki (Trans. Electrochem. Soc. 89 [1946) 229/36, 233).  H. Kawecki, G. F. Simons, Beryllium Corp. S. A. 1951 1489). [29) D. A. Everest, E. Napier (Proc. 6th Intern. Congr. Mineral. , Cannes 1963 , pp. A. 62 15811). 3 With Alkaline Agents Beryl or Be concentrates can be decomposed by sintering or melting with alkali hydroxides (300 to 400 cG), alkali carbonates (700 to 1000 cG), CaO or CaC0 3 (1200 to 1300°C), Ca(OHh at Pe=30 atm, or by heating with concentrated aqueous NaOH (or KOH) under Pe = 3 to 6 atm at temperatures below 200 cC.
Granular Be(OH)2 was precipitated by NaOH at pH = 12 as described above . The Na2BeF4 formed in the reaction was converted into the more soluble (NH4)2BeF4 by treating the finely ground sinter with a small stoichiometric excess of (NH4)2SiFs in the presence of water at room temperature. The resulting solution of (NH4hBeF4 was separated from the very slightly soluble Na2SiF s (and the oxides) by filtration and evaporated to give the crystallized salt . Gmelin Handbook Be Suppl. Vol. A 1 The Production of Beryllium 24 Fig.