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US 4,902,491 AGranted
Phosphate feed material for phosphorus electric furnaces and production of same
AssigneeFMC Corporation
InventorsJoseph H. Finley, Lewis L. Hammermeister, Jared S. Sproul
Life of this patent
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Abstract
Compacted shapes of phosphatic material, suitable as a charge for a phosphorus furnace, are produced by compacting a mixture of calcined phosphate fines and phosphoric acid. The compacted shapes are conveniently produced on a roll briquetting press.
Claims6
A phosphate material, suitable as a charge for a phosphorus furnace, produced by the steps of:
- 1. forming a homogeneous mixture of calcined phosphate fines and phosphoric acid binder,
- 2. compacting the mixture into green shaped articles;
- and
- 3. curing the green shaped articles to increase their crush strength.
1 more element
Dependencies are inferred from the claim text.