Reduction of lead sulfate to lead sulfide with carbon monoxide

被引：14

作者：

Zheng Yong-xing ^{[1
]}

Liu Wei ^{[1
]}

Qin Wen-qing ^{[1
]}

Jiao Fen ^{[1
]}

Han Jun-wei ^{[1
]}

Yang Kang ^{[1
]}

Luo Hong-lin ^{[1
]}

机构：

[1] Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Peoples R China

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY | 2015年 / 22卷 / 08期

基金：

中国国家自然科学基金; 国家高技术研究发展计划(863计划);

关键词：

lead sulfate; reduction; carbon monoxide; lead sulfide; pyrometallurgy; CONVERTING SULFUR-DIOXIDE; HYDROTHERMAL SULFIDATION; BIOLOGICAL CONVERSION; ANGLESITE; RECOVERY; FLOTATION; KINETICS; SLUDGE;

D O I：

10.1007/s11771-015-2828-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

In order to decrease the solubility of PbSO4 and enhance lead recovery from PbSO4 bearing wastes, CO was employed as a reductant to transform PbSO4 into PbS. Reaction system was established and reductive thermodynamics of PbSO4 was calculated by software HSC 5.0. The effects of gas concentration, reaction temperature, time and mass of sample on reduction of PbSO4 were examined by thermogravimetry (TG) and XRD. Roasting tests further verify the conclusions of thermodynamic and TG analyses. The results show that increasing temperature in the reasonable range and CO content are favorable for the formation of PbS. The reduction process is controlled by chemical reaction and calculation value of the activation energy is 47.88 kJ/mol.

引用

页码：2929 / 2935

页数：7

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