Environment·Health·Safety

Performance analysis and application of refined magnesium slag

  • Lei Ren ,
  • Yuliang Ma ,
  • Yangjie Jia ,
  • Xingjun Wang ,
  • Fengling Yang ,
  • Fangqin Cheng
Expand
  • 1. Collaborative Innovation Center of High Value-added Utilization of Coal-related Wastes,State Environmental Protection Key Laboratory of Efficient Utilization Technology of Coal Waste Resources,Shanxi University,Taiyuan 030006,China
    2. The Fouth Geological Exploration Institute of Qinghai Province
    3. Shanxi Rui En Ze Technology Co.,Ltd.

Received date: 2020-07-28

  Online published: 2021-07-08

Abstract

Magnesium slag is a solid waste discharged during the production process of magnesium extraction and smelting.However,there are few systematic research reports on the refining of magnesium slag.In order to explore the physical and chemical properties of refined magnesium slag,the refined magnesium slag produced in a refining magnesium plant in Shanxi was used as raw material,and the physical and chemical properties were studied using high-temperature box furnace,X-ray fluorescence spectrometer(XRF),X-ray diffractometer(XRD),and scanning electron microscope-energy dispersive spec-trometer(SEM-EDS).The results showed that the main component of refined magnesium slag was MgCl2·6H2O,and the re-covery of magnesium chloride was a more feasible solution.The presence of magnesium nitride(Mg3N2) in the refined magne-sium slag indicated that the excessively high melting temperature during the melting of crude magnesium caused the refined elemental magnesium to react with nitrogen.The density adjustment of the refining flux would also directly affect the ease of separation of the magnesium beads in the refined magnesium slag.The crushing and winnowing of the magnesium slag could effectively separate the useless impurities,and would better expose the magnesium beads wrapped in the refined magnesium slag,which was beneficial to the recovery of resources.Finally,the current utilization of refined magnesium slag in China was discussed,and it was concluded that refined magnesium slag had good prospect of high-value utilization and could realize the reuse of waste resources.

Cite this article

Lei Ren , Yuliang Ma , Yangjie Jia , Xingjun Wang , Fengling Yang , Fangqin Cheng . Performance analysis and application of refined magnesium slag[J]. Inorganic Chemicals Industry, 2021 , 53(6) : 164 -170 . DOI: 10.19964/j.issn.1006-4990.2020-0425

References

[1] 冯硕, 崔丽, 程芳琴. 金属镁渣的综合利用[J]. 科技情报开发与经济, 2011,21(35):162-163.
[2] 李咏玲, 戈甜, 程芳琴. 不同处理方式对镁渣理化特性的影响[J]. 无机盐工业, 2016,48(3):52-55.
[3] 郭世平, 高波, 郭静静, 等. 镁渣余热在粗镁精炼中的应用研究[J]. 轻金属, 2017(10):41-43.
[4] 刘锦辉, 林文彪. 铝合金的除镁精炼工艺[J]. 铸造技术, 1991(5):5-7.
[5] 段丽萍, 寇斌达, 姬克丹, 等. 镁渣应用于循环流化床锅炉脱硫的试验[J]. 热力发电, 2016,45(1):88-92.
[6] 马双忱, 别璇, 孙尧, 等. 燃煤电厂镁法脱除烟气中SO2的研究现状与展望[J]. 化工进展, 2018,37(9):3609-3617.
[7] 任玉生, 徐宁. 钙镁渣湿法烟气脱硫工艺的研究[J]. 科技情报开发与经济, 2007,17(21):171-172.
[8] 冯雅丽, 廖圣德, 李浩然, 等. 镁法脱硫及脱硫产物多元化利用研究现状[J]. 无机盐工业, 2019,51(3):1-6.
[9] 张文政, 刘正, 毛萍莉. 镁金属提炼和精炼工艺的研究进展[J]. 机械工程材料, 2013,37(11):12-16.
[10] Ong S K, Koh T H, Nee A Y C. Assessing the environmental impact of materials processing techniques using an analytical hierarchy process method[J]. Journal of Materials Processing Technology, 2001,113(1):424-431.
[11] Gao H T, Wu G H, Ding W J. Purifying effect of new flux on magne-sium alloy[J]. Transactions of Nonferrous Metals Society of China, 2004,14(3):530-536.
[12] Gao H T, Wu G H, Fan Y, et al. Effects of purification fluxes conta-ining boride on AZ91 alloy[J]. Materials Science Forum, 2005,488-489:25-30.
[13] Schwerdtfeger K, Mutale C T, Ditze A. Recycling of magnesium allys:Chemical equilibrium between magnesium-lithium based me-lts[J]. Metallurgical and Materials Transactions A, 2002,33B:355-362.
[14] 路八智, 李燕梅, 魏占鸿, 等. 氧化镁法烟气脱硫特性及运行情况综述[J]. 环境污染与防治, 2018,40(3):345-348.
[15] 朱丹青. 浅谈硅热法镁精炼工艺与设计[J]. 轻金属, 1996(5):42-48.
[16] 崔自治, 杨维武, 张冬平. 镁渣火山灰活性试验研究[J]. 宁夏工程技术, 2007,6(2):160-163.
[17] Kimura K, Nishii K, Kawarada M. Recycling magnesium alloy hou-sings for notebook computers[J]. Fujitsu Scientific and Technical Journal, 2002,28(1):102-111.
[18] Antrekowitsch H, Hanko G. Recycling of different types of magne-sium scrap[C]//Magnesium Technology 2002,Warrendale,PA:The Minerals,Metals & Materials Society, 2002:43-48.
[19] 陈萍, 张茂勋. 镁及镁合金燃点的测试[J]. 特种铸造及有色合金, 2001(2):75-76.
[20] 陈萍. 镁合金燃点的测试研究[D]. 福州:福州大学, 2002.
[21] 徐日瑶, 刘宏专. 用新熔剂精炼碎结晶镁或回收精炼渣中镁的方法[J]. 轻金属, 1997(6):46-50.
[22] 李晓波. 精炼镁渣制光卤石和硫酸镁工艺研究[J]. 无机盐工业, 2003,35(3):42-43,51.
[23] 司徒杰生. 无机化工产品[M]. 北京: 化学工业出版社, 1993.
[24] 李晓波. 精炼镁渣制光卤石和氯化镁工艺研究[J]. 海湖盐与化工, 2006,35(1):16-18.
[25] 杨志刚. 从精炼镁渣中制取低钠光卤石、氯化钠、氯化镁的方法:中国, 102424916A[P]. 2012-04-25.
[26] 谭何易, 唐伦圆. 一种精炼镁渣的环保处理方法:中国, 107075611B[P]. 2014-04-14.
Outlines

/