| 摘要 |
<p>A phosphorous pentoxide producing method includes forming a kiln bed using feed agglomerates with a calcium-to-silica mole ratio of less than 1.0 and maintaining a bed temperature at or above 1180 °C along at least 50% of the bed length without exceeding 1380 °C along the entire bed length. Less than 10% of the agglomerates' phosphate input to the kiln remains in the kiln residue as phosphate. Another method includes maintaining a bed temperature at or above 1180 °C along a portion of the bed length and establishing a bed surface-to-volume ratio multiplied by a time for bed heat up to 1180 °C of less than 50 minutes-ft2/ft3</p> |
