Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Reexamination Certificate
2005-04-21
2009-06-23
King, Roy (Department: 1793)
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
C420S590000, C148S688000
Reexamination Certificate
active
07550029
ABSTRACT:
A method is described for reclaiming an Al—B4C composite scrap material. The method involves heating a liquid pool of molten aluminum while also pre-heating the scrap material. The scrap material is then added to the molten aluminum and a predetermined melt temperature is maintained in the liquid pool until all of the scrap material melts into the molten aluminum to form a resultant composite melt. Finally, the resultant composite melt is stirred to promote uniformity. A method is also described for preparing a B4C-containing aluminum cast composite products that involves preparing a mixture of free-flowing B4C particles and molten aluminum and stirring the mixture to wet the aluminum to the B4C particles. The mixture is then cast into a cast composite material and processed to form the cast composite product and Al—B4C composite scrap material. The scrap material is then reclaimed by the method described above.
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Chen Xiao-Guang
Fortin Jean-Yves
Alcan International Limited
Banner & Witcoff , Ltd.
King Roy
McGuthry-Banks Tima M
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