Reactive crystallization process of hydromagnesite microspheres

YANG Chen; SONG Xingfu; WANG Jin; SUN Ze; YU Jianguo

doi:10.3969/j.issn.0438-1157.2013.02.042

您当前的位置：

首页 >

文章列表页 >

Reactive crystallization process of hydromagnesite microspheres

更新时间：2025-12-10

- Reactive crystallization process of hydromagnesite microspheres
- CIESC Journal Issue 2, Pages: 718-724(2013)
- 作者机构：
  
  1. 华东理工大学,国家盐湖资源综合利用工程技术研究中心,上海,200237
  2. 化学工程联合国家重点实验室(华东理工大学),上海,200237
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.02.042
  CLC： 614.22TQ132.2
- Online First：05 February 2013，
  
  Published：05 February 2013
- 稿件说明：
移动端阅览
YANG Chen, SONG Xingfu, WANG Jin, et al. Reactive crystallization process of hydromagnesite microspheres[J]. CIESC Journal, 2013, (2): 718-724.
DOI：

YANG Chen, SONG Xingfu, WANG Jin, et al. Reactive crystallization process of hydromagnesite microspheres[J]. CIESC Journal, 2013, (2): 718-724. DOI： 10.3969/j.issn.0438-1157.2013.02.042.

摘要

碱式碳酸镁是一种重要的化工产品和原料。实验提供一种反应结晶直接制备碱式碳酸镁微球的方法

考察了搅拌时间、反应温度和反应物浓度对产物形貌和粒度的影响

分析了其形成机制。结果表明

采用控制搅拌时间的方法

制备出粒度在10～43 μm、变异系数为28%～43%的尺寸可控、形态良好的碱式碳酸镁微球。通过对结晶过程晶型晶貌研究发现

氯化镁和碳酸钠反应首先生成无定形物

逐步相转移为结晶相。研究表明

搅拌作用对无定形物相转移具有显著影响。在搅拌过程中

以产生晶核过程为主

在静置状态下

以无定形物生长在已有晶体过程为主

搅拌时间对晶体粒度和形貌起到调控作用。

Abstract

Hydromagnesite is an important chemical raw material and product.A reactive crystallization method was provided to prepare hydromagnesite microspheres directly in experiments.The effects of stirring time

reactive temperature and reactant concentrations on the morphology and particle size were studied.The formation mechanism of hydromagnesite microspheres was analyzed.The results show that hydromagnesite microspheres with controllable size and good shape can be obtained by controlling the stirring time.The size of particles is 10—43 μm with the coefficient of variation of 28%—43%.It is found that the amorphous substance is first generated by the reaction of magnesium chloride and sodium carbonate in the crystallization process.The amorphous substance gradually transfers to crystal phase.The study shows that the stirring has a significant impact on the phase transfer of amorphous substance.Crystal nuclei form during the stirring process.Under the static condition

the growth process of amorphous substance onto the pre-existed crystals is dominant.As a result

the crystal size and morphology can be regulated by the stirring time.

关键词

Keywords

references

Views

355

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Morphology regulation of BiOBr and study on its performance of photocatalytic CO2 reduction

Inhibition effect of chain end modified polyvinyl caprolactam on methane hydrate formation

Analyzing particle growth and morphology evolution of polyethylene based on electrostatic separation

Research of lithium carbonate three-phase reactive crystallization process

Synthesis and properties of hierarchical structure silver micro-nanocrystals

Related Author

JI Hongbing

LU Lili

LI Chen

CHEN Liuyun

XIE Xinling

LUO Xuan

SU Tongming

QIN Zuzeng

Related Institution

Institute of Green Petroleum Processing and Light Hydrocarbon Conversion, College of Chemical Engineering, Zhejiang University of Technology

School of Chemistry and Chemical Engineering, Guangxi University

Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences

CAS Key Laboratory of Gas Hydrate

Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development

⁰