| 摘要 |
<p>PURPOSE: A Method and an apparatus for recycling dust is provided to obtain Mn oxides, Na_2CO_3, BaCO_3, and NaCl while the dust is successively reacted with H_2O and HCl. CONSTITUTION: A Method for recycling dust comprises following steps. The dust is dissolved in H2O to obtain Na_2CO_3(aq) and first residues. The Na_2CO_3(aq) is separated form the first residues. The first residues are reacted with HCl(aq) to obtain BaCl_2(aq) and second residues. The BaCl_2 is separated from the second residues. Na_2CO_3(aq) is reacted with BaCl_2 (aq) to obtain BaCO_3, NaCl(aq), and residual Na_2CO_3(aq). The BaCO_3 is separated from the NaCl(aq). The second residues, Na_2CO_3, BaCO_3, and NaCl are obtained by drying the second residues, residual Na_2CO_3(aq), BaCO_3 and NaCl(aq).</p> |
