Production of zinc pellets

Patent · Mon Jan 01 00:00:00 EST 1996

OSTI ID:870696

Cooper, John F ^[1]

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1. Oakland, CA

Uniform zinc pellets are formed for use in batteries having a stationary or moving slurry zinc particle electrode. The process involves the cathodic deposition of zinc in a finely divided morphology from battery reaction product onto a non-adhering electrode substrate. The mossy zinc is removed from the electrode substrate by the action of gravity, entrainment in a flowing electrolyte, or by mechanical action. The finely divided zinc particles are collected and pressed into pellets by a mechanical device such as an extruder, a roller and chopper, or a punch and die. The pure zinc pellets are returned to the zinc battery in a pumped slurry and have uniform size, density and reactivity. Applications include zinc-air fuel batteries, zinc-ferricyanide storage batteries, and zinc-nickel-oxide secondary batteries.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: Regents of University of California (Oakland, CA)
• Patent Number(s): US 5578183
• OSTI ID: 870696
• Country of Publication: United States
• Language: English

Related Subjects

production
zinc
pellets
uniform
formed
batteries
stationary
moving
slurry
particle
electrode
process
involves
cathodic
deposition
finely
divided
morphology
battery
reaction
product
non-adhering
substrate
mossy
removed
action
gravity
entrainment
flowing
electrolyte
mechanical
particles
collected
pressed
device
extruder
roller
chopper
punch
die
pure
returned
pumped
size
density
reactivity
applications
zinc-air
fuel
zinc-ferricyanide
storage
zinc-nickel-oxide
secondary
secondary batteries
electrode substrate
storage batteries
air fuel
process involves
reaction product
finely divided
uniform size
mechanical device
zinc pellets
particle electrode
zinc particle
-air fuel
oxide secondary
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