| 摘要 |
<p>PURPOSE:To provide the method for recovering the tellurium which enhances the efficiency of concentrating Te by improving a sulfuric acid leaching stage for intermediate products, such as dross, generated in smelting of Pb and Zn in a blast furnace as a fore stage for recovering Te from the intermediate products. CONSTITUTION:This method consists of a stage for placing the intermediate products on a grid plate having 5mmX5mm to 15mmX15mm sizes of opening parts, feeding a sulfuric acid-contg. liquid thereto from below to execute leaching, withdrawing a part of a circulation liquid for leaching, adjusting the pH to 5 to 6 by an alkali-contg. soln. and separating the formed solids from the liquid.</p> |
