Passary Minerals Ltd. Manufactures Pasbond [Alpha] as a High Purity Alumina Bond Passary Minerals Ltd. Supplies synthetic raw material to the ceramic and refractory manufacturer. Pasbond [Alpha] as a High Purity Alumina Bond used in preparation of wide varieties of refractory products; including dry pressed bricks, ramming mixes and jointing cement which requires low moisture and gives good working time and flow on vibratory motion.