Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Production of urea-ammonium nitrate suspension fertilizer
T104101 Production of urea-ammonium nitrate suspension fertilizer
Patent Drawings:Drawing: T104101-2    Drawing: T104101-3    Drawing: T104101-4    Drawing: T104101-5    Drawing: T104101-6    
« 1 »

(5 images)

Inventor: Boles, et al.
Date Issued: April 3, 1984
Application: 06/448,568
Filed: December 10, 1982
Inventors: Boles; Jeffrey L. (Florence, AL)
Jones; Thomas M. (Sheffield, AL)
Assignee:
Primary Examiner:
Assistant Examiner:
Attorney Or Agent:
U.S. Class: 71/30; 71/59; 71/64.08
Field Of Search:
International Class: C05C 1/00
U.S Patent Documents:
Foreign Patent Documents:
Other References:









Abstract: Highly concentrated nitrogen suspension fertilizers which have excellent long-term storage and handling properties in both warm and severely cold weather are produced from urea, ammonium nitrate, water, and attapulgite clay and contain urea crystals suspended in a saturated solution containing urea and ammonium nitrate. The compositions must be maintained within a very narrow range to produce suspensions satisfactory for commercial use. This narrow composition range is such that the saturation temperatures and nitrogen contents of the products fall within specific ranges. Deviation from these ranges results in poor quality, commercially unusable products. If the saturation temperature or nitrogen content is too high, the product is too viscous to be pumped or applied to the soil. If the saturation temperature is too low, the product contains excessively large crystals which settle to the bottom of storage and shipping tanks and clog spray nozzles in suspension application equipment. The process consists of first heating the urea, ammonium nitrate, and water to an all solution state or combining hot urea and ammonium nitrate solutions from production. Then the solution is cooled in two or more stages with gelling-type clay added prior to crystallization and air cooling used in the crystallization stage(s).
Claim:
Description:
 
 
  Recently Added Patents
Extensible, filtered lists for mobile device user interface
Methods and compositions for improved F-18 labeling of proteins, peptides and other molecules
Rotating device
External preparation composition for skin comprising ginseng flower or ginseng seed extracts
Metal-containing compositions and method of making same
Matching a usage history to a new cloud
High damage threshold frequency conversion system
  Randomly Featured Patents
Vessel comprising a retractable thruster
Multiple frequency communication device
Vase
Windage loss reduction arrangement for scroll fluid device
Load torque blocking device
Partial ester release agents for plastics
Thermocouple power meter
Method for smoothing dI/dT noise due to clock transitions
Compute units using local luts to reduce pipeline stalls
Method and apparatus for fatigue crack detection and propagation analysis