| 菱镁矿阶梯化煅烧制备活性氧化镁 |
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| 引用本文： | 邓玉芬,白丽梅,张俊,李小雪,马玉新,刘淑贤. 菱镁矿阶梯化煅烧制备活性氧化镁[J]. 非金属矿, 2017, 0(1). DOI: 10.3969/j.issn.1000-8098.2017.01.006 |
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| 作者姓名： | 邓玉芬 白丽梅 张俊 李小雪 马玉新 刘淑贤 |
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| 作者单位： | 1. 华北理工大学矿业学院,河北唐山,063009;2. 万宝矿产有限公司,北京,100053 |
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| 基金项目： | 国家自然科学基金，河北省自然科学基金，大学生创新基金 |
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| 摘 要： | 利用菱镁矿通过阶梯化升温保温的煅烧方式制备活性氧化镁。首先分析TG-DTG曲线得出菱镁矿的主要分解温度为550~700℃;然后根据主要分解温度范围分别预设不同的煅烧温度和保温时间,计算分解率,并利用水合法测定氧化镁的活性。最后综合考虑菱镁矿分解率和氧化镁活性两方面因素,得出最佳煅烧条件为:550℃保温7 h,升到650℃后保温2 h。
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| 关 键 词： | 菱镁矿 阶梯化 煅烧 活性氧化镁 |
The Preparation of Activated MgO by Stepwise Calcining Magnesite |
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| Deng Yufen,Bai Limei,Zhang Jun,Li Xiaoxue,Ma Yuxin,Liu Shuxian. The Preparation of Activated MgO by Stepwise Calcining Magnesite[J]. Non-metallic Mines, 2017, 0(1). DOI: 10.3969/j.issn.1000-8098.2017.01.006 |
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| Authors: | Deng Yufen Bai Limei Zhang Jun Li Xiaoxue Ma Yuxin Liu Shuxian |
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| Abstract: | In this paper,activated MgO is prepared by stepwise calcining magnesite.First,getting the main decomposition temperature 550 ～ 700 ℃ by analyzing TG-DTG curves of magnesite.Then,different calcination temperature and holding time are respectively preseted according to the decomposition temperature of the main scope,to calculate its decomposition rate and determine the activity of magnesium oxide by using the hydration method.Finally,considering magnesite decomposition rate and magnesium oxide activity,the conclusion is getted that the best calcining condition is:550 ℃ heat preserve for 7 h,then up to 650 ℃ heat preserve for 2 h. |
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| Keywords: | magnesite stepwise calcining activated MgO |
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