Procedure for manufacturing zinc particles

Details Procedure for manufacturing zinc particles Procedure for manufacturing zinc particles

1997-12-15

1999-07-13

Wyszomierski, George

Specialized metallurgical processes, compositions for use therei

Processes

Producing solid particulate free metal directly from liquid...

75340, 75356, 75360, 164 46, B22F 908

Patent

active

059221020

ABSTRACT:
A procedure for making zinc particles of a size, shape and composition such that the particles can be subsequently used in a process for manufacturing zinc parts from such particles in either molten or powder form includes the initial step of heating zinc to a temperature at least as high as 720.degree. C. The molten zinc is passed through a screen having small openings, on the order of about 1/4".times.1/4" into a cooling region formed by a movable surface which is at a temperature of on the order of about -200.degree. C. The zinc forms small particles as it passes through the openings in the screen and essentially instantaneously solidifies as it contacts the movable surface. Thereafter, the solidified zinc particles are subjected to a grinding process to reduce their size to a powder having a surface area in the range of 2 mm.sup.2 to 20 mm.sup.2.

REFERENCES:
patent: 4069045 (1978-01-01), Lundgren
patent: 4915729 (1990-04-01), Boswell et al.

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