期刊
CEMENT AND CONCRETE RESEARCH
卷 162, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cemconres.2022.106970
关键词
Mercury; Cement; Quadrupole mass spectrometry; Temperature fractionation
资金
- Mercox project - EMPIR program [16ENV01]
- European Union
- Ministry of Education, Science and Sport [J1-1716]
- Slovenian Research Agency ARRS [J1-3033]
- Salonit Anhovo, Building Materials, Joint-Stock Co . [P-SOF-DR-?ST-2016/6]
- [2017/1]
The main purpose of this study was to assess the potential of using temperature-programmed desorption coupled to quadrupole mass spectrometry to study the mercury partitioning in cement production. The results provide insights into the behavior of mercury in the cement production process and can be used to support the development of control technologies.
The main purpose of this work was to assess the potential of using temperature-programmed desorption coupled to quadrupole mass spectrometry to study the mercury partitioning in the cement production. This information is of significance to understanding mercury's migration and partitioning in the production process. In conventional raw materials-limestone, mercury is matrix-bound, but with the introduction of other mineral components, this stability is variable. In raw mills, mercury exhibits three distinct fractions that remain until the raw meal is dispatched in the preheater. Mercury collected in dust from fabric filters was desorbed at 200-250 C, indicating the presence of chloro-containing mercury compounds to be the predominant form. Clinker had a low content of mercury primarily present as a very stable fraction. These results add to the current knowledge of mercury behavior in the cement production process and can be used to support the development of control technologies.
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