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Effects of Impurities on CaSO4 Crystallization in the Ca(H2PO4)(2)-H2SO4-H3PO4-H2O System
Mu, Xinru1; Zhu, Ganyu2; Li, Xu3; Li, Shaopeng2; Gong, Xiaokang3; Li, Huiquan2,4; Sun, Guoxin1
2019-07-01
Source PublicationACS OMEGA
ISSN2470-1343
Volume4Issue:7Pages:12702-12710
AbstractWet-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.
DOI10.1021/acsomega.9b01114
Language英语
WOS KeywordCALCIUM-SULFATE DIHYDRATE ; PHOSPHORIC-ACID PRODUCTION ; GYPSUM SCALE FORMATION ; SIMULATED CONDITIONS ; GROWTH-KINETICS ; ION-PAIRS ; HEMIHYDRATE ; NUCLEATION ; MORPHOLOGY ; SODIUM
Funding ProjectNational 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 Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Youth Innovation Promotion Association CAS
WOS IDWOS:000482176800159
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/30663
Collection中国科学院过程工程研究所
Corresponding AuthorZhu, Ganyu; Sun, Guoxin
Affiliation1.Univ Jinan, Sch Chem & Chem Engn, Inst Smart Mat & Engn, 336 Nanxinzhuang West Rd, Jinan 250022, Shandong, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.Yidu Xingfa Chem Co Ltd, Yidu 443311, Hubei, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
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.
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