NON AGRICULTURAL LIME USE

Brand	Owner (click to sort)	Address	Description
AQUACAL	CARMEUSE NORTH AMERICA SERVICES, INC.	11 Stanwix Street Pittsburgh PA 15222	non-agricultural lime for use in acid neutralization and water treatment;AQUA CALCIUM;
CHEMICAL LIME	LHOIST NORTH AMERICA, INC.	P.O. Box 985004 Fort Worth TX 761855004	Non-agricultural lime for use in construction; limestone;Non-agricultural lime in the nature of calcium oxide and calcium hydroxide for use in manufacturing;LIME;
INJECTOLIME	CARMEUSE LIME, INC.	11 Stanwix Street, 21st Floor Pittsburgh PA 15222	non-agricultural lime for use in electric arc furnace steelmaking;INJECTOR LIME;Color is not claimed as a feature of the mark.;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

An improved process for the production of tricalcium aluminate (TCA) filter aid for use in an alumina refinery is described. Quicklime is slaked in a slaker tin using a suitable slaking solution to form a slaked lime slurry (10). A suitable surface-active agent is added to the slaking solution prior to slaking of the lime. Alternatively, the surface-active agents can be added to the slaked lime either during slaking or after slaking. The slaked lime slurry is then transferred to a stirred storage/transfer tank (12) before it is pumped to a lime aging tank (14). A concentrated Bayer liquor and steam are added to the tank (14) to provide a caustic aluminate solution that reacts with the slaked lime. Sufficient residence time is allowed in the lime aging tank (14) for the initial product of the reaction to "age" before use, forming relatively pure particles of the thermodynamically stable TCA. The addition of a suitable surface-active agent or agents at the appropriate concentration will significantly improve TCA formation in the lime aging facility. These improvements include a narrower and more symmetric sized distribution, and a more crystalline structure, leading to substantially improved filtration characteristics.