概論蒸溜法製得的鋅稱為粗鋅,其所含杂質總量常在1—2％之內……,有時高達3—4％。粗鋅內含鉛達2—4％,其數量視原鋅精鑛內的含鉛量及蒸溜溫度而定。精鑛內含铅愈多,則進入粗鋅的鉛也愈多。提高蒸溜溫度則鉛自配料內可較為完全地昇華而出。因此第二次扒出的鋅含鉛較第一次扒出的鋅為多,這可從下表看出。 Introduction The zinc produced by the steaming process is called crude zinc, and the total amount of impurities it contains is usually within 1-2% ... and sometimes as high as 3-4%. Rough zinc lead content of 2-4%, the number of raw zinc concentrate as the amount of lead and steaming temperature may be. The more lead in the concentrate, the more lead in the raw zinc. Increasing the steaming temperature leads to a more complete sublimation of lead from the ingredients. Therefore, the second pick out of zinc than the first pick out of zinc for more, as can be seen from the table below.