自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

您目前所在的位置:首页 - 期刊简介 - 详细页面

中南大学学报(英文版)

Journal of Central South University

Vol. 25    No. 8    August 2018

[PDF Download]    [Flash Online]

    

Recovery of antimony from antimony-bearing dusts through reduction roasting process under CO–CO2 mixture gas atmosphere after firstly oxidation roasted
ZHONG Da-peng(钟大鹏)1, 2, LI Lei(李磊)1, 2, 3, TAN Cheng(谈诚)1, 2

1. State Key Laboratory of Complex Non-ferrous Metal Resources Clean Utilization,
Kunming University of Science and Technology, Kunming 650093, China;
2. Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction of Ministry of Education, Kunming University of Science and Technology, Kunming 650093, China;
3. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China

Abstract:This paper mainly investigated the antimony recovery from antimony-bearing dusts through reduction roasting process after the dust firstly oxidation roasted. CO–CO2 mixture gas was used as reducing agent, and the antimony-containing phase was reduced into Sb4O6, volatilized into smoke, and finally recovered through the cooling cylinder. The antimony recovery rate increased from 66.00 wt% to 73.81 wt% in temperature range of 650 to 800 °C, and decreased with temperature increased further to 900 °C due to the reduction of Sb4O6 to the nonvolatile Sb. Similarly, the CO partial pressure also played a double role in this test. Under optimized conditions of roasting temperature of 800 °C, CO partial pressure of 7.5 vol% and roasting time of 120 min, 98.40 wt% of arsenic removal rate and 80.40 wt% antimony recovery rate could be obtained. In addition, the “As2O3” product could be used for preparing ferric arsenate which realized the harmless treatment of it.

 

Key words: antimony-bearing dust; separation of arsenic and antimony; antimony recovery; reduction roasting; waste utilization

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
版权所有:《中南大学学报(自然科学版、英文版)》编辑部
地 址:湖南省长沙市中南大学 邮编: 410083
电 话: 0731-88879765(中) 88836963(英) 传真: 0731-88877727
电子邮箱:zngdxb@csu.edu.cn 湘ICP备09001153号