白云石,蒸氨,NH3沉淀,阻燃氢氧化镁," /> 白云石,蒸氨,NH3沉淀,阻燃氢氧化镁,"/> dolomite,evaporated ammonia,ammonia precipitation,flame retardant ,Mg(OH)2,"/> <p class="MsoNormal"> <span>轻烧白云石粉制备阻燃</span><span>Mg(OH)</span><sub><span>2</span></sub>的工艺及机理研究
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沈阳化工大学学报, 2024, 38(1): 17-23    doi: 10.3969/j.issn.2095-2198.2024.01.003
  化学与化学工程 本期目录 | 过刊浏览 | 高级检索 |

轻烧白云石粉制备阻燃Mg(OH)2的工艺及机理研究

(沈阳化工大学 化学工程学院, 辽宁 沈阳 110142)

Study on the Process and Mechanism of Preparing Fire-Retardant Mg(OH)2 by Light-Burned Dolomite Powder

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摘要 

为了实现白云石高值化利用的目标,以轻烧白云石粉为原料,采用蒸氨-NH3沉淀的方法制备阻燃Mg(OH)2,研究了蒸氨、NH3沉淀过程中各条件对产品指标的影响及反应机理.结果表明:蒸氨反应温度为100 ℃、反应时间3 h、铵镁比(硝酸铵与轻烧粉的物质的量的比)为2.21条件下,得到Mg2+转化率为81.5%的精制液;NH3沉淀反应温度为50 ℃时,可以制备得到阻燃型Mg(OH)2;利用Materials Studio分子模拟软件阐明了制备阻燃Mg(OH)2的机理.

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关键词:  白云石')" href="#">

白云石  蒸氨  NH3沉淀  阻燃氢氧化镁    

Abstract: 

In order to achieve the goal of high value utilization of dolomite resources,the flame retardant Mg(OH)2 was prepared from light-burned dolomite powder by the method of ammonia evaporation-NH3 precipitation.The influences of various conditions on the product indexes and reaction mechanisms during the preparation of  Mg(OH)2 by ammonia evaporation and NH3 precipitation were studied.The results showed that the refined liquid with Mg2+ conversion rate of 81.5% could be obtained under the optimized process conditions of reaction temperature of 100 ,reaction time of 3 h and ammonium magnesium ratio of 2.21.The flame retardant Mg(OH)2 could be prepared by adding NH3 into the refining solution when the reaction temperature was 50 .The mechanisms of preparing flame retardant Mg(OH)2 was elucidated by Materials Studio molecular simulation software.

Key words:  dolomite')" href="#">

dolomite    evaporated ammonia    ammonia precipitation    flame retardant     Mg(OH)2

               出版日期:  2024-02-29      发布日期:  2024-09-23      整期出版日期:  2024-02-29
ZTFLH: 

TQ175

 
基金资助: 

辽宁省教育厅自然科学青年项目(LQ2020003);20202022年辽宁省普通本科高等学校校际合作项目(辽教发〔202028号文件);20212023年辽宁省科技厅创新能力提升联合基金项目(2021-NLTS-12-04

通讯作者:  郑强   
作者简介:  刘海利(1996—),男,山西吕梁人,硕士研究生在读,主要从事镁钙无机功能材料制备的研究.
引用本文:    
刘海利, 邢佳斌, 岳岩, 马亚丽, 贾松岩, 李雪, 郑强.

轻烧白云石粉制备阻燃Mg(OH)2的工艺及机理研究 [J]. 沈阳化工大学学报, 2024, 38(1): 17-23.
LIU Haili, XING Jiabin, YUE Yan, MA Yali, JIA Songyan, LI Xue, ZHENG Qiang.

Study on the Process and Mechanism of Preparing Fire-Retardant Mg(OH)2 by Light-Burned Dolomite Powder . Journal of Shenyang University of Chemical Technology, 2024, 38(1): 17-23.

链接本文:  
https://xuebao.syuct.edu.cn/CN/10.3969/j.issn.2095-2198.2024.01.003  或          https://xuebao.syuct.edu.cn/CN/Y2024/V38/I1/17

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