NON AGRICULTURAL LIME WHITE LIME

Brand	Owner	Address	Description
SCHAEFER PRECAL	SCHAEFER KALK GmbH & Co. KG	Louise-Seher-Strasse 6 65582 Diez Germany	Non-agricultural lime white lime, white lump lime and white hydrated lime for use in construction;[ Lime wash paint, namely, whitewash ];
	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.