Production of spherical bismuth shot

Details Production of spherical bismuth shot Production of spherical bismuth shot

B - Operations, Transporting

22

F

B22F 9/08 (2006.01) C22C 1/04 (2006.01) F42B 7/04 (2006.01) F42B 33/00 (2006.01)

Patent

CA 2199286

A method is provided for producing bismuth and bismuth alloy shot particles by a procedure whereby molten bismuth at a temperature less than about 100 ~C above the melting point of the bismuth is used to form drops of molten bismuth which fall through a vessel containing a material more viscous than water with the method having a Reynolds Number less than about 100. Preferred materials are polyethylene glycols having a molecular weight of about 4500 and 8000.

L'invention concerne un procédé pour produire des particules de grenaille de bismuth et d'alliage de bismuth selon un mode opératoire dans lequel du bismuth fondu à une température inférieure à environ 100 ~C au-dessus du point de fusion du bismuth est utilisé pour former des gouttes de bismuth en fusion qui tombent dans un récipient contenant une matière plus visqueuse que l'eau, ce procédé donnant un nombre de Reynolds inférieur à environ 100. Les matières préférées sont des polyéthylène-glycols présentant un poids moléculaire d'environ 4500-8000.

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