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
Synthesis of 8-amino boron dipyrromethenes having blue fluorescence
Method of and apparatus for image denoising
Equipment to facilitate money transfers into bank accounts
Water slide
Motor with power-generation coil module
Fuel-based injection control
Platform for generating electricity from flowing fluid using generally prolate turbine
  Randomly Featured Patents
Patient ambulation motion detector with multiple switch motion detection
Microwave popcorn incorporating coarse salt and method of preparation
Integrated circuit ground system
Hermaphroditic electrical contact
Blade fuse tester having lamp
Barbeque grill cooking apparatus
Accumulator assembly having a reversing valve and a heat pump system thereof
Surface pattern for a portion of a knitted garment
Dent puller
Semi-synthesis of taxane intermediates and aziridine analogues and their conversion to paclitaxel and docetaxel