Patent ID: 6023006
Filing Date: 2000-02-08
Classification: C04B,G21F

Abstract:
A method of manufacturing a sintered Monazite or Monazite compound, consisting essentially of mixing, in the solid phase, reactants comprising a lanthanide metaphosphate compound of formula Ln(PO.sub.3).sub.3 and at least one compound selected from the group consisting of a lanthanide oxide, an oxide of an actinide with a valency of III and a compound capable of generating a lanthanide oxide or an oxide of an actinide with a valency of III during a reaction sintering heat treatment, and mixtures thereof; pressing the mixture thus obtained, and reaction sintering said pressed mixture in the solid phase to form a sintered Monazite or a Monazite compound; wherein said lanthanide is at least one of the light rare earth elements from lanthanum to terbium.