Plunging-capsule

Details Plunging-capsule Plunging-capsule

C - Chemistry, Metallurgy

21

C

53/102

C21C 7/00 (2006.01) C21C 1/02 (2006.01) C21C 1/10 (2006.01)

Patent

CA 1194698

ABSTRACT The invention is concerned with a plunging capsule for introducing a highly volatile, vaporizable additive, such as pure magnesium, into a pig iron, cast iron or cast steel melt in a treatment vessel for desulfurization or production of nodular graphite iron, vermicular graphite iron or magnesium treated cast iron. The capsule of the invention comprises a wall oriented vertically in an operating position of the capsule, and having an upper portion forming two-thirds of the wall and a lower portion forming one-third of the wall, the wall defining a chamber for the additive. There are at least one outlet opening in the upper portion having a first transverse cross- sectional area, and at least one inlet opening in the lower portion having a second transverse cross- sectional area, the second transverse cross-sectional area being less than the first cross-sectional area.

401061

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