1795. KAMZOLKIN, V.P., KOZHENOVA. K. I.. LIVSHITS, V. D.. AND SHESHIN, A. I. [Catalyst for Ammonia Synthesis.] Russian Patent 42,990, May 31, 1935. Chem. Abs., vol. 31, 1937, p. 7202.

PATENTS

1795. KAMZOLKIN, V. P., KOZHENOVA, K. I., LIVSHITS, V. D., AND SHESHIN, A. I. [Catalyst for Ammonia Synthesis.] Russian Patent 42,990, May 31, 1935. Chem. Abs., vol. 31, 1937, p. 7202.

Magnetite high in SiO₂ is consecutively ground and magnetically separated; after 1 or 2 separations it is fused with activators. The melt is broken up and subjected to additional separations, whereafter it is fused again without the addition of activators but with the introduction of pure Fe.

KANEDA, S. See abs. 604.