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Title: Production of fluid fertilizer from phosphorus furnace waste stream

Abstract

Processes and compositions of matter are disclosed for the production of liquid fertilizers wherein wastewater from a phosphorus smelting furnace is incorporated in liquid fertilizer processes. The wastewater replaces water evaporated and the wastewater dissolves fertilizer salts. A serious water pollution problem is avoided when wastewater is incorporated in liquid fertilizers. The invention discloses a process for making orthophosphate suspension fertilizer wherein impure phosphoric acid is neutralized in the condensing system, water from the condensing system is bled off, and a suspending clay is added to produce orthophosphate suspension fertilizer. In this process, phosphorus sludge made at phosphorus furnaces is used to produce suspension fertilizer, and wastewater from phosphate smelting furnaces is recovered. New compositions of matter are disclosed. A process is disclosed for making phosphoric acid with low impurities content wherein phosphorus sludge is burned to make impure orthophosphoric acid and the impure acid is recycled to an agglomerating step in a process for making elemental phosphorus.

Inventors:
Publication Date:
OSTI Identifier:
5236560
Patent Number(s):
US 4514366
Assignee:
James C. Barber and Associates Inc.
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 10 Jun 1983; Other Information: PAT-APPL-502929
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 54 ENVIRONMENTAL SCIENCES; FERTILIZERS; PRODUCTION; WATER POLLUTION ABATEMENT; WASTE WATER; WASTE PROCESSING; WASTE PRODUCT UTILIZATION; FURNACES; PH VALUE; PHOSPHATES; PHOSPHORUS; SMELTERS; SOLVENT PROPERTIES; ELEMENTS; HYDROGEN COMPOUNDS; LIQUID WASTES; MANAGEMENT; NONMETALS; OXYGEN COMPOUNDS; PHOSPHORUS COMPOUNDS; POLLUTION ABATEMENT; PROCESSING; WASTE MANAGEMENT; WASTES; WATER; 320305* - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Industrial Waste Management; 520200 - Environment, Aquatic- Chemicals Monitoring & Transport- (-1989)

Citation Formats

Barber, J C. Production of fluid fertilizer from phosphorus furnace waste stream. United States: N. p., 1985. Web.
Barber, J C. Production of fluid fertilizer from phosphorus furnace waste stream. United States.
Barber, J C. 1985. "Production of fluid fertilizer from phosphorus furnace waste stream". United States.
@article{osti_5236560,
title = {Production of fluid fertilizer from phosphorus furnace waste stream},
author = {Barber, J C},
abstractNote = {Processes and compositions of matter are disclosed for the production of liquid fertilizers wherein wastewater from a phosphorus smelting furnace is incorporated in liquid fertilizer processes. The wastewater replaces water evaporated and the wastewater dissolves fertilizer salts. A serious water pollution problem is avoided when wastewater is incorporated in liquid fertilizers. The invention discloses a process for making orthophosphate suspension fertilizer wherein impure phosphoric acid is neutralized in the condensing system, water from the condensing system is bled off, and a suspending clay is added to produce orthophosphate suspension fertilizer. In this process, phosphorus sludge made at phosphorus furnaces is used to produce suspension fertilizer, and wastewater from phosphate smelting furnaces is recovered. New compositions of matter are disclosed. A process is disclosed for making phosphoric acid with low impurities content wherein phosphorus sludge is burned to make impure orthophosphoric acid and the impure acid is recycled to an agglomerating step in a process for making elemental phosphorus.},
doi = {},
url = {https://www.osti.gov/biblio/5236560}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 30 00:00:00 EDT 1985},
month = {Tue Apr 30 00:00:00 EDT 1985}
}