DataVXAdvances in Cement ResearchPaper
journal article·2022-05

Effects of calcination process of salt lake magnesium slag on the properties of magnesium oxysulfide cement

Xiuquan Liu, Jing Wen, Chenggong Chang, Weixin Zheng, Qiyuan Liu, Xueying Xiao, Jinmei Dong

Advances in Cement Research· Volume 34· Issue 5
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Source abstract

Abstract

To promote large-scale utilisation of magnesium resources from salt lakes, low-cost magnesium oxysulfate (MOS) cement was prepared using a magnesia-rich residue as the raw material to produce light-burned magnesia after washing and calcining the raw material. The effects of calcination temperature (CT) on the properties of calcined products and the phase and microstructure of the MOS cement prepared from the calcined products were studied. The results showed that magnesium hydroxide was completely decomposed after calcining at 500°C for 2 h. When the CT reached 500°C and continued to increase, the activity and the crystal size of the magnesium oxide both increased. Microstructural analysis showed that a high CT was beneficial to the growth of the needle-shaped phase 5 (5Mg(OH)2.MgSO4.7H2O) of the prepared MOS. A high CT also resulted in high porosity.
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Research context

OpenAlex topics: Magnesium Oxide Properties and Applications · Bone Tissue Engineering Materials · Layered Double Hydroxides Synthesis and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Graduate student, Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xinning, PR China; Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining, PR China; The Graduate University of Academy of Science, Beijing, PR China

Associate Researcher, Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, PR China; Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining, PR China

Assistant Researcher, Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, PR China; Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining, PR China

Graduate student, Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, PR China; Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining, PR China; The Graduate University of Academy of Science, Beijing, PR China

Researcher, Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, PR China; Key aboratory of Salt Lake Resources Chemistry of Qinghai Province Xining, PR China

Associate Researcher, Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resolurces, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, PR China; Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining, PR China (corresponding author: )

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