PROCESS FOR THE PREPARATION OF CRYSTALS OF THE CLASS OF PONCTUAL SYMMETRY 32 AND OF THE CHEMICAL FORMULA AT BO4

摘要

A. THE PROCESS CONCERNING THE PREPARATION OF CRYSTALS OF THE POSTAL SYMMETRY CLASS32 AND OF WHICH THE RAW FORMULA IS ABO, OR A MEMBER OF THE FE, AL, GA AND B GROUP, AND A COMPONENT OF THE P AND AS GROUP. / P P B. THIS PROCESS IS CHARACTERIZED IN THAT THE CONCENTRATIONS OF ACIDS USED ARE IN THE ORDER OF 11 TO 20MOLES1, THE TEMPERATURES OF THE SOLUTIONS FROM 150 TO 190C, AND THE TOTAL PRESSURES RISE UP TO 2.5BARS. / P / p P C. THIS METHOD ALLOWS WORKING UNDER A PRESSURE MUCH LOWER THAN IN PREVIOUS PROCESSES WHICH REDUCES THE RISK OF ACCIDENT CONSIDERABLY.