COMPOSITION AND METHOD OF SEPARATING BENTONITE INTO PARTICLES HAVING DISCRETE SIZE AND DENSITY RANGES CAPABLE OF BINDING BIOLOGICAL TOXINS AND CHEMOTHERAPEUTIC AGENTS.
A low heavy metal (i.e. cadmium, mercury) containing calcium aluminum silicate product produced by the method of Air Classification. The method comprises using an air classification system for separating a cadmium containing calcium aluminum silicate feed stock into at least a first fraction and a second fraction. The first separation fraction contains material having an average particle size over 100 um, and the second fraction contains material having an average particle size under 100 um.
