| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a fluorine elution suppressing method for determining the optimum addition condition of a fluorine elution inhibitor with respect to a fluorine-containing substance containing an arbitrary amount of fluorine. <P>SOLUTION: The amount to be added of the fluorine elution inhibitor is adjusted according to formula (1): F≥(S×FS+A×FA)×3.0/100--[5.5×äA /100×(CA<SB>12</SB>C<SB>a</SB>O<SB>7</SB>A<SB>l2</SB>O<SB>3</SB>+CA<SB>3</SB>C<SB>a</SB>O A<SB>l2</SB>O<SB>3</SB>+0.55×CAC<SB>a</SB>O A<SB>l2</SB>O<SB>3</SB>)}<SP>0.6</SP>]×ä1-0.05ln(γ)} [wherein, F is a target value (mg/L) of a fluorine elution amount, FS is an average concentration (mass%) of fluorine in the fluorine-containing substance, FA is an average concentration (mass%) of fluorine in the fluorine elution inhibitor, S is a ratio (mass%) of the fluorine-containing substance in a mixture, A is a ratio (mass%) of the fluorine elution inhibitor, CAX is the concentration (mass%) of X in the fluorine elution inhibitor andγis a mean particle size (mm) of the fluorine elution inhibitor]. <P>COPYRIGHT: (C)2004,JPO</p> |
