Effects of Impurities on CaSO4 Crystallization in the Ca(H2PO4)(2)-H2SO4-H3PO4-H2O System

doi:10.1021/acsomega.9b01114

	Effects of Impurities on CaSO4 Crystallization in the Ca(H2PO4)(2)-H2SO4-H3PO4-H2O System
	Mu, Xinru 4; Zhu, Ganyu 3; Li, Xu 2; Li, Shaopeng 3; Gong, Xiaokang 2; Li, Huiquan 1,3; Sun, Guoxin 4
刊名	ACS OMEGA
	2019-07-01
卷号	4 期号:7 页码:12702-12710
ISSN号	2470-1343
DOI	10.1021/acsomega.9b01114
英文摘要	Wet-process phosphoric acid is a fundamental process in the fertilizer industry. The influence of impurities on crystallization kinetics of CaSO4 was investigated in the Ca(H2PO4)(2)-H2SO4-H3PO4-H2O system using a mixed suspension mixed product removal crystallizer. Effects of Si, Al, Fe, Mg, K, and Na on crystal morphology and structure were examined in the highly acidic system through scanning electron microscopy and high-resolution transmission electron microscopy. Results show that the increase of Mg, K, and Na content facilitates crystal growth. Si, Al, and Fe are beneficial to CaSO4 crystal growth at a certain concentration range. Impurities also affect the crystal morphology, and the addition of Si, Fe, and Na promotes the formation of needle-like crystals compared with other impurities. X-ray diffraction results show that the preferred crystal growth direction is (020), and the interplanar spacing of the crystals is affected by the element radius of the impurities.
资助项目	National Key Research and Development Program of China[2017YFC0703200] ; National Natural Science Foundation of China[51704272] ; China Postdoctoral Science Foundation[2016LH0008] ; Youth Innovation Promotion Association CAS
WOS关键词	CALCIUM-SULFATE DIHYDRATE ; PHOSPHORIC-ACID PRODUCTION ; GYPSUM SCALE FORMATION ; SIMULATED CONDITIONS ; GROWTH-KINETICS ; ION-PAIRS ; HEMIHYDRATE ; NUCLEATION ; MORPHOLOGY ; SODIUM
WOS研究方向	Chemistry
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000482176800159
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/30662]
专题	中国科学院过程工程研究所
通讯作者	Zhu, Ganyu; Sun, Guoxin
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Yidu Xingfa Chem Co Ltd, Yidu 443311, Hubei, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 4.Univ Jinan, Sch Chem & Chem Engn, Inst Smart Mat & Engn, 336 Nanxinzhuang West Rd, Jinan 250022, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Mu, Xinru,Zhu, Ganyu,Li, Xu,et al. Effects of Impurities on CaSO4 Crystallization in the Ca(H2PO4)(2)-H2SO4-H3PO4-H2O System[J]. ACS OMEGA,2019,4(7):12702-12710.
APA	Mu, Xinru.,Zhu, Ganyu.,Li, Xu.,Li, Shaopeng.,Gong, Xiaokang.,...&Sun, Guoxin.(2019).Effects of Impurities on CaSO4 Crystallization in the Ca(H2PO4)(2)-H2SO4-H3PO4-H2O System.ACS OMEGA,4(7),12702-12710.
MLA	Mu, Xinru,et al."Effects of Impurities on CaSO4 Crystallization in the Ca(H2PO4)(2)-H2SO4-H3PO4-H2O System".ACS OMEGA 4.7(2019):12702-12710.