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Process for producing fuel from solid waste

  • US 4,113,185 A
  • Filed: 06/08/1977
  • Issued: 09/12/1978
  • Est. Priority Date: 06/08/1977
  • Status: Expired due to Term
First Claim
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1. A process for recovering fuel, as well as other reusable materials, from municipal solid waste which includes paper and other fibrous materials, non-fibrous organic materials, metal, glass and other inorganic materials comprising:

  • a. dry shredding the waste to pieces of a range of predetermined sizes,b. separating said shredded refuse by air classification into a light fraction which is predominantly paper and a heavy fraction,c. treating said heavy fraction to reduce the relatively frangible portions thereof to less than a predetermined particle size by subjecting said heavy fraction in the presence of a liquid to substantial and violent mechanical and hydraulic shear to form a slurry,d. separating the inorganics in said slurry from the organic material therein,e. dewatering said organic material to a particulate mass, andf. combining said particulate mass with said light fraction for use as fuel.

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