METHOD FOR PRODUCING AMMONIUM METATUNGSTATE FROM AMMONIUMPARATUNGSTATE-钨钼稀土标准知识网

METHOD FOR PRODUCING AMMONIUM METATUNGSTATE FROM AMMONIUMPARATUNGSTATE

A method is disclosed for producing ammonium metatungstate from ammonium paratungstate. The method involves first roasting the ammonium paratungstate at from about 275 to about 300 for from about 10 hours to about 20 hours to ...