菱镁矿悬浮态与堆积态煅烧对产物特性的影响

发布时间：2018-07-12 19:30

本文选题：菱镁矿 + 悬浮态煅烧　；参考：《人工晶体学报》2017年06期

【摘要】：利用实验室自制小型模拟悬浮态煅烧装置和马弗炉,对菱镁矿进行快速煅烧试验制备轻烧氧化镁,分别对悬浮态和堆积态的煅烧产物进行分解率、XRD、SEM、活性等分析,探讨两种煅烧方式对轻烧氧化镁特性的影响。结果表明:相对于堆积态煅烧,菱镁矿经悬浮态煅烧1 min后分解率即可达到98%以上,得到的轻烧氧化镁晶粒尺寸小、结晶度低,比表面积大、表现出很高的活性;悬浮态煅烧显著强化了热传递过程,加快了反应速度,生产效率成倍提高,产品性能好、质量稳定,可应用于大规模生产高活性轻烧氧化镁。
[Abstract]:The light calcined magnesium oxide was prepared by the rapid calcination test of magnesite with a small simulated suspension calcinator and a muffle furnace in laboratory. The decomposition rate and activity of the calcined products in the suspended state and the accumulated state were analyzed respectively. The effects of two kinds of calcination methods on the properties of light calcined magnesium oxide were discussed. The results show that the decomposition rate of magnesite by suspension calcination for 1 min can reach more than 98% compared with that of pile-up calcination. The light calcined magnesium oxide has small grain size, low crystallinity, large specific surface area and high activity. The suspended calcination process has greatly enhanced the heat transfer process, quickened the reaction rate, increased the production efficiency, improved the product performance and stable quality, so it can be applied to the large-scale production of high active light calcined magnesium oxide.
【作者单位】：辽宁科技大学高温材料与镁资源工程学院;
【基金】：国家科技支撑计划项目(2014BAB02B01)
【分类号】：TQ132.2

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