Study on the Technology of Preparing Active MgO and MOC from Magnesium Hydroxide
The salt lakes in Qaidam area are rich in magnesium resources. Along with the development and utilization of lithium and potassium resources a large amount of magnesium-rich by-products will be produced as by-products. In order to improve the utilization rate of magnesium resources, this article use...
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| Format: | Article |
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Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences
2022-06-01
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| Series: | Kuangchan zonghe liyong |
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| Online Access: | http://www.kczhly.com/en/article/doi/10.3969/j.issn.1000-6532.2022.03.004 |
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| author | Danchun A Xueying Xiao Jing Wen Jinmei Dong Weixin Zheng Chenggong Chang |
| author_facet | Danchun A Xueying Xiao Jing Wen Jinmei Dong Weixin Zheng Chenggong Chang |
| author_sort | Danchun A |
| collection | DOAJ |
| description | The salt lakes in Qaidam area are rich in magnesium resources. Along with the development and utilization of lithium and potassium resources a large amount of magnesium-rich by-products will be produced as by-products. In order to improve the utilization rate of magnesium resources, this article uses Mg (OH)2 prepared from calcium carbide slag and MgCl2 as raw materials to study the effect of the calcination process on the particle size, specific surface area, reactive MgO content and setting time of the calcined product. MOC specimens were prepared from the calcined products. The effects of calcining temperature and raw material ratio on the MOC specimens were studied. The results of the study show that the specific surface area of the calcined product decreases gradually with the increase of the calcination temperature and the extension of the holding time, and the particle size tends to decrease first and then increase. With the increase of calcination temperature and the extension of holding time, the reactive MgO content in the calcined product and the setting time of the calcined product increases gradually. When the calcination temperature of the raw material is 600℃, the molar ratio of reactive MgO to MgCl2 is 6, and the Baume degree of the MgCl2 solution is 27, the compressive strength of the MOC specimen is high, and the compressive strength gradually increases with age. |
| first_indexed | 2024-04-11T13:44:27Z |
| format | Article |
| id | doaj.art-c05d2d0d2b7048638b3ba23aa9c92c7e |
| institution | Directory Open Access Journal |
| issn | 1000-6532 |
| language | zho |
| last_indexed | 2024-04-11T13:44:27Z |
| publishDate | 2022-06-01 |
| publisher | Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences |
| record_format | Article |
| series | Kuangchan zonghe liyong |
| spelling | doaj.art-c05d2d0d2b7048638b3ba23aa9c92c7e2022-12-22T04:21:08ZzhoInstitute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological SciencesKuangchan zonghe liyong1000-65322022-06-01433172610.3969/j.issn.1000-6532.2022.03.0042022-03edanchunStudy on the Technology of Preparing Active MgO and MOC from Magnesium HydroxideDanchun A0Xueying Xiao1Jing Wen2Jinmei Dong3Weixin Zheng4Chenggong Chang5Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining, Qinghai, ChinaQinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining, Qinghai, ChinaQinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining, Qinghai, ChinaQinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining, Qinghai, ChinaQinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining, Qinghai, ChinaQinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province, Xining, Qinghai, ChinaThe salt lakes in Qaidam area are rich in magnesium resources. Along with the development and utilization of lithium and potassium resources a large amount of magnesium-rich by-products will be produced as by-products. In order to improve the utilization rate of magnesium resources, this article uses Mg (OH)2 prepared from calcium carbide slag and MgCl2 as raw materials to study the effect of the calcination process on the particle size, specific surface area, reactive MgO content and setting time of the calcined product. MOC specimens were prepared from the calcined products. The effects of calcining temperature and raw material ratio on the MOC specimens were studied. The results of the study show that the specific surface area of the calcined product decreases gradually with the increase of the calcination temperature and the extension of the holding time, and the particle size tends to decrease first and then increase. With the increase of calcination temperature and the extension of holding time, the reactive MgO content in the calcined product and the setting time of the calcined product increases gradually. When the calcination temperature of the raw material is 600℃, the molar ratio of reactive MgO to MgCl2 is 6, and the Baume degree of the MgCl2 solution is 27, the compressive strength of the MOC specimen is high, and the compressive strength gradually increases with age.http://www.kczhly.com/en/article/doi/10.3969/j.issn.1000-6532.2022.03.004magnesium oxychloride cementmagnesium hydroxideprocess of calcinationraw material ratiocompressive strength |
| spellingShingle | Danchun A Xueying Xiao Jing Wen Jinmei Dong Weixin Zheng Chenggong Chang Study on the Technology of Preparing Active MgO and MOC from Magnesium Hydroxide Kuangchan zonghe liyong magnesium oxychloride cement magnesium hydroxide process of calcination raw material ratio compressive strength |
| title | Study on the Technology of Preparing Active MgO and MOC from Magnesium Hydroxide |
| title_full | Study on the Technology of Preparing Active MgO and MOC from Magnesium Hydroxide |
| title_fullStr | Study on the Technology of Preparing Active MgO and MOC from Magnesium Hydroxide |
| title_full_unstemmed | Study on the Technology of Preparing Active MgO and MOC from Magnesium Hydroxide |
| title_short | Study on the Technology of Preparing Active MgO and MOC from Magnesium Hydroxide |
| title_sort | study on the technology of preparing active mgo and moc from magnesium hydroxide |
| topic | magnesium oxychloride cement magnesium hydroxide process of calcination raw material ratio compressive strength |
| url | http://www.kczhly.com/en/article/doi/10.3969/j.issn.1000-6532.2022.03.004 |
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