Fire refining method of crude lead

The invention relates to a fire refining method of crude lead, belonging to the technical field of fire refining. The fire refining method comprises the following steps: oxidizing a crude lead melt at800-850 DEG C, so as to obtain lead liquid; re-oxidizing the obtained lead liquid at 850-900 DEG C, so as to obtain smoke-shaped lead oxide; and reducing smoke-shaped lead oxide so as to obtain reduzate; and repeatedly processing obtained reduzate, so as to obtain refined lead, wherein the repeated number of times is more than or equal to 0. According to the fire refining method, multiple impurity elements in the crude lead can be removed once, so that the addition of auxiliaries is reduced, the process is simplified, and the obtained refined lead still has relatively high purity; and the refined lead with the purity over 98% can be obtained. 本发明涉及种火法精炼粗铅的方法，属于火法精炼技术领域。将粗铅熔体在800~850℃下进行氧化，得到铅液；将得到的铅液在850~900℃下进行再氧化得到烟尘状氧化铅；将得到的烟尘状氧化铅进行还原得到还原物；将得到的还原物重复处理得到精铅，其中重复次数≥0。本发明利用氧化条件，使粗铅中的多种杂质元素能够次性去除，减少辅料添加，简化了工艺，而且所得精