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Inert carriers are generally either inorganic minerals or botanical materials. These carriers can be divided further into granules and dust. The most popular granular carriers are the clay minerals attapulgite, montmorillonite, and vermiculite. The important botanical carriers are granular corncob and granular walnut shells.
Granular carriers can be generally described as having a mesh range of between 4 and 80 mesh. The standard sizes for clay are 8/16, 16/30, 25/50, and 30/60. Corncobs standard sizes are 8/14, 10/14, 10/20, 14/20, and 20/40.
The major producers of clay granulars carriers include Engelhard, Excel Minerals, Floridin, Lowe's, Inc., and Oil Dri. Corncob is produced in the Midwest by the Andersons, Coeval, Inc., and Mount Pulaski Products. Sand is produced by PPG Industries, Inc.
The general processing of clay follows the following sequence: (a) overburden removal, (b) mining, (c) grinding, (d) drying, (e) sizing, (f) high-temperature heating, (g) sizing, and (h) packaging and shipping.
Although this discussion may highlight only a few of the granular carriers and companies available, the intent is to introduce the reader to the granular marketplace and processing.
granular carriers, attapulgite, montmorillonite, granules, inert carriers, corncobs, pesticide carriers, clay carriers, clay, vermiculite carriers, sand carriers, pesticides
National sales manager, Lowe's, Inc., South Bend, Ind.