Sonic gelling of clay in suspension fertilizers

Details Sonic gelling of clay in suspension fertilizers Sonic gelling of clay in suspension fertilizers

1988-04-06

1990-09-04

Lander, Ferris H.

Chemistry: fertilizers

Processes and products

Organic material-containing

71 29, 71 30, 71 34, 71 6408, C05C 900, C05G 300

Patent

active

049541552

ABSTRACT:
The instant invention relates to a method utilizing relatively high frequency oscillations for dispersing channelized 2:1 clays during the production of fertilizer suspensions to therein form gels as opposed to the use of mechanical energy such as, for example, that imparted by a pump or agitator. The instant sonic gelling method is effective for use with all fertilizer suspension systems containing the channelized 2:1 clays, sepiolite or attapulgite. The method involves situating the fluid fertilizer-clay mixture to be gelled in juxtaposition with ultrasonic (i.e., sonic) energy generating means. In a fashion somewhat similar to ultrasonic cleaning methods, it has now been found that sound waves striking clay particles (crystal agglomerates) in aqueous fertilizer solutions impart sufficient energy to the particles to break them down into their component individual, needlelike crystals, thereby forming a gel to increase the viscosity of the solution, and to effect the formation of a suspension capable of preventing the settling of various crystalline fertilizer salts up to about 20 mesh (850 microns) in size.

REFERENCES:
patent: 3997636 (1976-12-01), Bennett
patent: 4134750 (1979-01-01), Norton

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