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高 校 地 质 学 报
Geological Journal of China Universities
2012 年 6 月,第 18 卷,第 2 期,248-255页
June 2012,Vol. 18, No.2, p. 248-255
中国东部典型铁镁质尾矿的潜在固碳能力评估
王晓妍1,张丽君1,袁旭音1*,刘连文2,季峻峰2
1. 河海大学 环境学院,南京 210098;2. 表生地球化学教育部重点实验室,南京大学 地球科学与工程学院,南京 210093
摘要:利用铁镁质尾矿与CO2反应,形成稳定的碳酸盐矿物,是一种新型的、有前途的固定二氧化碳方法,而对于这些尾
矿固碳潜力的评价则是正确利用尾矿的前提。该文通过我国东部两个典型超基性岩带(东海—日照岩带和赤城—朝阳岩带)
10个矿床尾矿的矿物组分、粒度分布以及相关元素的测定分析,评估不同矿床尾矿的潜在固碳能力。分析结果显示 :在东海—
日照岩带,尾矿中MgO的含量较高(36.81%~41.39%),且多以蛇纹石为主,粗粒物质相对较多;而在赤城—朝阳岩带,尾
矿中MgO 含量中等(5.84%~15.60%),而CaO 含量偏高(5.68%~19.28%),矿物组分以各种角闪石为主,尾矿颗粒较细。结
合野外调研和计算,估计赤城—朝阳岩带可以用于封存 CO2的尾矿潜力为 4.0×108 t,远远高于东海—日照岩带。综合化学
成分、比表面积、尾矿储量等各方面因素,赤城—朝阳超基性岩带具有很大CO2封存潜力。。
关键词:铁镁质尾矿;CO2封存;钙镁含量;比表面积;中国东部
中图分类号:X142;P594 文献标识码:A 文章编号: 1006-7493(2012)02-0248-08
Abstract: The carbon sequestration by interaction of mafic tailings with CO2 to form a stable carbonate minerals is a new and
promising method for reducing CO2 emission. The evaluation of CO2 sequestration potential of mafic tailings is the essential
premise for the reasonable utilization of these tailings. This paper mainly aims at 10 tailings in two typical ultrabasic rock
belts (Donghai-Rizhao rock belt and Chicheng-Chaoyang rock belt) of eastern China, and analyzes mineral components, size
distributions and major elements of tailing samples. Then a comprehensive evaluation about the carbon sequestration potential
is taken for these mafic tailings in the two rock belts based on analysis results. In the Donghai-Rizhao rock belt, tailings are
dominated by the serpentine, with higher MgO content (36.81%-41.39%) and relative coarser sizes. Compared with minerals in
Donghai-Rizhao tailings, a variety of hornblende are the common minerals in the Chicheng-Chaoyang tailings, with moderate
MgO content (5.84%-15.60%), higher CaO content (5.68%-19.28%) and finer sizes. By field survey and calculation with the
chemical equation, the carbon sequestration capacity of Chicheng-Chaoyang tailings is estimated about 4.0×108 t, which is much
bigger than Donghai-Rizhao tailings. Considering chemical composition, specific surface area, the tailings resources and other
factors comprehensively, mafic tailings in Chicheng-Chaoyang rock belt has the large carbon sequestration potential and can be
served as one of the most promising storage sites for carbon sequestration.
Key words: mafic tailings; CO2 sequestration; Mg and Ca content; specific surface area; eastern China
Corresponding author: Yuan Xuyin,Professor;E
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mail: yxy_hjy@hhu.edu.cn
WANG Xiaoyan1, ZHANG Lijun1, YUAN Xuyin1*, LIU Lianwen2, JI Junfeng2
1. College of Environment, Hohai University, Nanjing 210098, China;
2. Key Laboratory of Surficial Geochemistry, Ministry of Education, Nanjing University,
School of Earth Sciences and Enginecring, Nanjing 210093, China
Evaluation on Potential Carbon Sequestration Capability of Typical
Mafic Tailings in Eastern China
收稿日期:2012-03-26;修回日期:2012-04-24
基金项目:
国家863项目(2009AA06Z112);中国地调局工作项目(1212011087126)联合资助
作者简介:王晓妍,女,1988年生,硕士研究生,环境地球化学专业;E
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mail:freehanfeng@sina.com
*通信作者:袁旭音,男,1964年生,教授,博士生导师;Email:yxy_hjy@hhu.edu.cn
DOI:10.16108/j.issn1006-7493.2012.02.005