Malic Acid → Dicalciumhydroxy malate

Participants

Reaction Steps

A dicalciumhydroxy malate granular product is prepared by mixing two molar equivalents of particulate calcium hydroxide with one molar equivalent of particulate malic acid (totaling 45 kg for the entire composition) in a ribbon blender for 15 minutes at normal speeds. To ensure that the product does not over react when small amounts of water are added to the batch a water jacket is used. Next, about 1 L of water is slowly sprayed into the particulate mixture product. After about 10 minutes of reaction time (the product becomes spongy and rises, and then drops back to a more granular state), an additional 1 L of water is added. This is repeated several times until no further reaction appeared to be occurring upon addition of water. The end result is a granular product. Once a fully reacted granular product is formed, no additional water is added. The resulting composition is then dried in a cool room and ground to a predetermined particle size.

Provenance & Evidence