Chemistry of inorganic compounds – Phosphorus or compound thereof – Elemental phosphorus
Patent
1989-10-13
1990-11-06
Heller, Gregory A.
Chemistry of inorganic compounds
Phosphorus or compound thereof
Elemental phosphorus
423323, 71 34, C01B 2501, C01B 2502, C01B 2504, C05B 700
Patent
active
049684990
ABSTRACT:
A process is disclosed for converting precipitator dust obtained during production of elemental phosphorus into feedstock for the submerged-arc electric furnace. Precipitator dust is agglomerated and indurated to prepare furnace feedstock. A binder is made by reacting acidic phosphorus compounds with alkaline substances. The preferred acidic phosphorus compound is phosphoric acid, and the preferred alkaline substance is ground phosphate ore. Precipitator dust is tumbled with the binder to form agglomerates, and the agglomerates are then indurated by heating. Gases evolved during preparation of binder, agglomeration of precipitator dust, and induration of the agglomerates are scrubbed with an aqueous medium having a pH in the range of 5.5 to 6.0. Scrubber effluent is used as feedstock for the production of suspension fertilizer. The indurated agglomerates are smelted in a submerged-arc electric furnace.
REFERENCES:
patent: 2040081 (1936-05-01), Curtis
patent: 2267077 (1941-12-01), Burke
patent: 3034883 (1962-05-01), Hignett et al.
patent: 3076248 (1963-02-01), Darrow et al.
patent: 3104952 (1963-09-01), Hartig
patent: 3202744 (1965-08-01), Barber et al.
patent: 3335094 (1967-08-01), Darby
patent: 3522338 (1970-07-01), Kass et al.
patent: 3531250 (1970-09-01), Hinz et al.
patent: 3760048 (1973-09-01), Sullivan et al.
patent: 3923961 (1975-12-01), Dancy
patent: 4081333 (1978-03-01), Holmes et al.
patent: 4372929 (1983-02-01), Barber
patent: 4373893 (1983-02-01), Barber
patent: 4383847 (1983-05-01), Barber
patent: 4421521 (1983-12-01), Barber
patent: 4451277 (1984-05-01), Barber
patent: 4481176 (1984-11-01), Dodson et al.
patent: 4492627 (1985-01-01), Crea
patent: 4514366 (1985-04-01), Barber
patent: 4529439 (1985-07-01), Barber
patent: 4608241 (1986-08-01), Barber
patent: 4649035 (1987-03-01), Barber
patent: 4656020 (1987-04-01), Barber
patent: 4670240 (1987-06-01), Barber
patent: 4783328 (1988-11-01), Finley et al.
patent: 4806326 (1989-02-01), Finley
patent: 4822583 (1989-04-01), Finley et al.
Barber, "Solid Wastes from Phosphorus Production", Solid Wastes, 1975, pp. 929-947.
Barber et al, "A Waste Recovery Story", Chemtech, May 1986, pp. 298-302.
Brown James J.
Heller Gregory A.
James C. Barber and Associates Inc.
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