(1. 中南大學(xué) 冶金與環(huán)境學(xué)院，長沙 410083；
2. 山東黃金集團(tuán)有限公司 博士后科研工作站，濟(jì)南 250101)
摘 要: 以鉛精礦氧化熔煉產(chǎn)生的高鉛渣為原料，通過靜態(tài)實(shí)驗(yàn)研究其熔池熔煉還原過程。使用X射線衍射(XRD)和等離子體發(fā)射光譜(ICP)對(duì)反應(yīng)原料及產(chǎn)物進(jìn)行分析，探討鐵硅比、鈣硅比、還原煤用量、還原溫度、還原時(shí)間等對(duì)有價(jià)金屬元素(Pb、Cu、Zn)在高鉛渣還原產(chǎn)物中分布的影響。結(jié)果表明：靜態(tài)實(shí)驗(yàn)中的Pb、Cu主要進(jìn)入金屬相，而Zn則基本進(jìn)入還原渣中。最有利于有價(jià)金屬綜合回收的工藝條件如下：鐵硅比1.25，鈣硅比0.8，還原時(shí)間為60 min，還原溫度為1200 ℃，還原劑的用量為理論量的1.3倍。
關(guān)鍵字: 高鉛渣；液態(tài)還原；熔池熔煉；金屬分布
（1. School of Metallurgy and Environment, Central South University, Changsha 410083, China;
2. Post-Doctoral Research Center, Shandong Gold Group Co., Ltd., Ji’nan 250101, China）
Abstract:The bath smelting reduction process of high lead slag, which is generated in the lead concentrate smelting process, was studied in static experiments. The raw material and the products of the process were analyzed using X-ray diffraction (XRD) and inductively coupled plasma (ICP). The influence of technical parameters, including iron to silica ratio, calcium oxide to silica ratio, dosage of reductant, reduction temperature and reduction time, on the distribution of valuable metals between the products of the reduction process was investigated. The results reveal that Pb and Cu mainly enter the metal phase, while Zn mainly enters the slag phase. The best process parameters for comprehensive metal recovery are that iron to silica ratio is 1.5, calcium oxide to silica ratio is 0.8, reduction temperature is 1200 ℃, reduction time is 60 min, dosage of reductant is 1.3 times of the stoichiometric value.
Key words: high lead slag; liquid reduction; bath smelting; metal distribution
