| 摘要 |
<p>comprising comminution (1), followed by pressure leaching (3), which may, or may not, be preceded by a baking stage (2); after the leaching stage (3), the resulting alkaline liquor is separated from the slurry by filtration (4), preferably vacuum filtration, and then is subjected to further processing for obtaining the target potassium salt; said process having a second variant involving a calcination step of the verdete slate (5) preceding the pressure leaching stage (3).</p> |
