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Method and apparatus for neutralizing reactive material such as batteries

  • US 4,637,928 A
  • Filed: 08/06/1982
  • Issued: 01/20/1987
  • Est. Priority Date: 08/06/1982
  • Status: Expired due to Term
First Claim
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1. A method for treating high energy density lithium batteries in a manner permitting safe disposal thereof, each of said batteries comprising a casing having reactive material therein, comprising:

  • (a) introducing said batteries to a hammermill to open the battery casings to allow access to the interiors thereof;

    (b) simultaneously deluging said hammermill with an alkaline neutralizing liquid to introduce said liquid to the interiors of said opened casings to neutralize the reactive material in said casings, the blades of said hammermill increasing the velocity of said liquid flowing therethrough;

    (c) collecting said liquid and opened casings exiting from said hammermill in a container holding a static quantity of said liquid;

    (d) removing gas evolved during opening of said casings and neutralizing of said reactive material and cleaning the gas by scrubbing to remove any particulate contaminants therein;

    (e) cooling the liquid in said container; and

    (f) filtering the liquid in the container to remove particulate matter larger than a predetermined size.

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