无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ
工业技术

工业生产氟硅酸镁工艺探究

  • 赵瑞祥
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  • 秦皇岛华瀛磷酸有限公司,河北秦皇岛 066004
赵瑞祥(1969— )男,高级工程师,从事磷酸、复肥及氟盐产品生产管理、工程项目管理和技术开发等工作;E-mail: rxzhaoqhd@163.com

收稿日期: 2020-09-18

  网络出版日期: 2021-08-11

版权

《无机盐工业》编辑部, 2021, 版权所有,未经授权,不得转载、摘编本刊文章,不得使用本刊的版式设计。

Investigation on industrial production process of magnesium fluorosilicate

  • Zhao Ruixiang
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  • Qinhuangdao Huaying Phosacid Co.,Ltd,Qinhuangdao 066004,China

Received date: 2020-09-18

  Online published: 2021-08-11

Copyright

, 2021, Copyright reserved © 2021. Office of INORGANIC CHEMICALS INDUSTRY All articles published represent the opinions of the authors, and do not reflect the official policy of the Chinese Medical Association or the Editorial Board, unless this is clearly specified.

摘要

为了寻求工业生产氟硅酸镁的最佳工艺条件,降低能耗并提高产品质量,系统研究并优化了利用磷肥工业副产氟硅酸和氧化镁粉生产氟硅酸镁晶体颗粒产品的工艺参数。列举了氟硅酸镁产品的粒径以及粒度分布等物化性能指标,得到了氟硅酸镁产品最大产率的最佳工艺参数:直接将氧化镁粉计量加入合成槽,并确定其加入的顺序,氟硅酸质量分数为16%,m(氧化镁)/m(氟硅酸)为0.244~0.260,合成温度控制在40~50 ℃,得到浓度较高的产品溶液;蒸发温度为35~45 ℃,蒸发浓缩的晶浆进入MSMPR冷却结晶槽;冷却结晶温度控制在30 ℃,结晶槽搅拌器的转动频率控制在20~40 Hz,产品粒径可以控制在0.16~0.37 mm,该研究可为相关生产企业提供工艺技术方面的借鉴。

本文引用格式

赵瑞祥 . 工业生产氟硅酸镁工艺探究[J]. 无机盐工业, 2021 , 53(8) : 79 -82 . DOI: 10.19964/j.issn.1006-4990.2020-0523

Abstract

In order to reduce energy consumption and improve product quality,the best method for industrial production of magnesium fluorosilicate was explored.The process parameters for the production of magnesium fluorosilicate crystal particles by using by-product fluorosilicic acid from phosphate fertilizer industry from phosphate fertilizer industry and magnesia powder were systematically studied and optimized.The physicochemical properties such as particle size and particle size distribution of magnesium fluorosilicate were listed.The optimum process parameters to provide the maximum yield of magnesium fluosilicate products were obtained,directly adding MgO powder into the synthesis tank and its adding sequence were determined.The optimum parameters were as follows:the content of fluorosilicic H2SiF6,was 16%(mass fraction) the mass ratio of m(MgO)/m(H2SiF6) was controlled at 0.244~0.260,the synthesis temperature was controlled at 40~50 ℃,the product solution with high concentration was obtained,the evaporation temperature was 35~45 ℃,and the evaporated slurry entered the MSMPR cooling crystallization tank,the cooling crystallization temperature was controlled at 30 ℃,the rotation frequency of crystallizer agitator was controlled at 20~40 Hz,and the product particle size could be controlled at 0.16~0.37 mm.The above-mentioned studies could be used as process technological reference for the related manufacturers.

参考文献

[1] 刘晓华. 磷肥副产品-氟硅酸镁的生产[J]. 磷肥与复肥, 1995(2):26-27.
[2] 唐坤明, 方定远. 氟硅酸镁的真空浓缩生产工艺探讨[J]. 应用技术市场, 1996(9):12-13.
[3] Zhao R X. Process optimization in batch crystallization of sodium fluosilicate[J]. Journal of Experimental & Industrial Crystallograp-hy, 2005,40(3):243-247.
[4] Gurbuz H, Ozdemir B. Experimental determination of the metastable zone width of borax decahydrate by ultrasonic velocity measureme-nt[J]. Crystal Growth, 2003,252:343-349.
[5] 赵瑞祥. 加料方式对氟硅酸钠晶体微观结构的影响研究[J]. 磷肥与复肥, 2019(12):6-9.
[6] 龙丹. 氟硼酸钾制备工艺研究[J]. 山东化工, 2019,9(48):26-28.
[7] Everett J.H. Effects of supersaturation and temperature on nuclea-tion and crystal growth in a MSMPR crystallizer[Z/OL]. Retro-spective Theses and Dissertations,1976. [2020-09-28]. https//lib.dr.iastate.edu/rtd/6213.
[8] 黄凤鸣. 真空蒸发技术在氟硅酸镁生产中的应用[J]. 无机盐工业, 2007,39(6):54-56.
[9] Ali H. A.Preparation of potassium fluorosilicate(K2SiF6) from fluorosilicic acid produced in Iraq Phosphate Plant Al-Qadisiya[J]. Journal for Engineering Sciences, 2011,4(4):537-545.
[10] Akrap M, Kuzmanic N, Prlic Kardum J. Effect of mixing on the cry-stal size distribution of borax deca-hydrate in a batch cooling cryst allizer[J]. Journal of Crystal Growth, 2010,312(24):3603-3608.
[11] Jiang M, Braatz R D. Designs of continuous-flow pharmaceutical crystallizers:developments and practice[J]. Cryst Eng Comm, 2019,21:3534-3551.
[12] 隋岩峰, 刘松林, 杨帆. 氟硅酸铵氨化制备纳米二氧化硅的实验研究[J]. 无机盐工业, 2018,50(2):33-36.
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