| 摘要 |
<p>PURPOSE:To economically recover Zn from by-products contg. Zn compounds from an iron manufacturing stage, e.g., dust and sludge by charging a blend of the by-products with a reducing agent into molten slag to reduce and vaporize the Zn compounds. CONSTITUTION:By-products contg. Zn compounds such as ZnO, ZnCl2 and Zn(OH)2 from an iron manufacturing stage, e.g., dust and sludge are blended with a reducing agent. The blend is charged into hot molten slag to reduce ZnO and Zn(OH)2 with the reducing agent and to vaporize them. The vaporized Zn is oxidized again to ZnO in the air and easily captured by a dust collector together with evaporated ZnCl2.</p> |
