大颗粒氯化钾聚结结晶及其粒径控制
收稿日期: 2020-09-27
网络出版日期: 2021-08-11
基金资助
青海省重点研发与转化计划-科技合作专项(2018-HZ-818);青海省自然科学基金(2019-ZJ-901);青海民族大学自然科学基金(2018XJG01);青海民族大学科研创新团队专项经费资助(2019XJZD01);青海民族大学2020年度校级本硕博(学生)项目(2020XJXS08)
Coalescence crystallization of large particle KCl and its particle size control
Received date: 2020-09-27
Online published: 2021-08-11
万俊峰 , 董伟兵 , 陈许龙 , 杜景灵 , 王刚 . 大颗粒氯化钾聚结结晶及其粒径控制[J]. 无机盐工业, 2021 , 53(8) : 50 -54 . DOI: 10.19964/j.issn.1006-4990.2020-0532
The solubility of potassium chloride in water was measured by focused reflection beam measurement（FBRM）.The preparation of KCl particle crystals and its particle size control rule under speed of 250 r/min were studied.The effects of con-sumption of primary particles,cooling rate and supersaturation on the coalescence of KCl in solution at this speed were inves-tigated.The results showed that: the solubility of potassium chloride increased with the increase of temperature;the faster the cooling rate led to the greater the instantaneous supersaturation of solution,the easier nucleation led to produce more parti-cles;when the optimal addition amount of primary particles was 0.05~0.1 g in 100 mL solution,the average particle size of the prepared crystal could reach 1 900~2 000 μm and the product had moderate particle size and good sphericity.
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