Production of fluid fertilizer from phosphorus furnace waste stream

Patent · Tue Apr 30 00:00:00 EDT 1985

OSTI ID:5236560

Barber, J C

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.

• Assignee: James C. Barber and Associates Inc.
• Patent Number(s): US 4514366
• OSTI ID: 5236560
• Resource Relation: Patent File Date: Filed date 10 Jun 1983; Other Information: PAT-APPL-502929
• Country of Publication: United States
• Language: English

Related Subjects

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)