Removal of Al3+ and Mg2+ Ions in Wet-process Phosphoric Acid via the Formation of Aluminofluoride Complexes

2021 ◽  
pp. 1-28
Author(s):  
Binbin He ◽  
Yuanzhi Zhu ◽  
Delong Xie ◽  
Yunxiang Nie ◽  
Yi Mei
Keyword(s):  
Phosphoric Acid ◽  
Wet Process

Flame Photometric Determination of Calcium in Wet-Process Phosphoric Acid

1954 ◽  
Vol 26 (6) ◽  
pp. 1060-1061 ◽  
Author(s):  
J. A. Brabson ◽  
W. D. Wilhide
Keyword(s):  
Phosphoric Acid ◽  
Photometric Determination ◽  
Wet Process

scholarly journals Extraction of Nitric Acid from Wet-process Phosphoric Acid

2013 ◽  
Vol 20 (0) ◽  
pp. 183-195 ◽  
Author(s):  
Xuhong JIA ◽  
Jun LI ◽  
Yang JIN ◽  
Jianhong LUO ◽  
Baoming WANG ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Phosphoric Acid ◽  
Wet Process

Water–Phosphorus Nexus for Wet-Process Phosphoric Acid Production

2018 ◽  
Vol 57 (20) ◽  
pp. 6968-6979
Author(s):  
Hang Ma ◽  
Xiao Feng ◽  
Chun Deng
Keyword(s):  
Phosphoric Acid ◽  
Acid Production ◽  
Wet Process

Performance Study of Nonionic Filter Aid on Wet-Process Phosphoric Acid

2013 ◽  
Vol 781-784 ◽  
pp. 560-566
Author(s):  
Jie Xu ◽  
De Jun Fei ◽  
Jian Xun Wu ◽  
Ya Gu Dang
Keyword(s):  
Phosphoric Acid ◽  
Vacuum Filter ◽  
Performance Study ◽  
Application Performance ◽  
Wet Process ◽  
Surface Contact Angle ◽  
Void Area ◽  
Cake Porosity ◽  
Ionic Copolymer ◽  
Filter Aid

A non-ionic copolymer PAMA which has two functions of flocculation and surface activity was synthesized in aqueous solution. The copolymer was also characterized by means of infrared spectroscopic and unclear magnetic. The application performance of PAMA were studied, and the results show that the filtration rate of the phosphoric acid can be increased by about 3.8 times,the water content of the filter cake can be reduced by about 9.8%. Meanwhile, PAMA may increase the cake porosity by 25.82%,increase the mean void area about 7 times ,increase the surface contact angle of phophogypsum by 9.8°and decrease the surface tension by 7.4 mN·m-1 according to the SEM photos and hydrophobic experiment. All this confirms that PAMA is useful for vacuum filter system of wet process phosphoric acid.

scholarly journals Sorption Extraction of Rare Earth Metals from Wet-Process Phosphoric Acid

2021 ◽  
Vol 83 (1) ◽  
pp. 140-152
Author(s):  
Baltabekova Zhazira ◽  
Kenzhaliyev Bagdaulet ◽  
Lokhova Nina ◽  
Kassymzhanov Kaisar
Keyword(s):  
Rare Earth ◽  
Phosphoric Acid ◽  
Treatment Process ◽  
Cation Exchanger ◽  
Rare Earth Metals ◽  
Ion Exchangers ◽  
Technological Parameters ◽  
Complex Composition ◽  
Impurity Composition ◽  
Wet Process

When apatites and phosphorites are processed, up to 30% of rare earth metals are converted into wet-process phosphoric acid. Wet-process phosphoric acid from the phosphorite treatment process differs from apatite one by impurity composition, i.e. the iron content is by 3.5 times, and calcium is by 5.0 times more. The complex composition of the wet-process phosphoric acid from the phosphorite treatment process requires additional researches to select optimal ion exchangers and technological parameters of sorption. Various aspects of sorption have been studied to select the optimal ion exchangers and technological parameters, and technological modes for desorption of rare earth metals from a cation exchanger to obtain a concentrate of rare earth metals have been completed. The method enables to extract rare earth metals without changing the composition of commercial wet-process phosphoric acid directly in the production process of the enterprises engaged in the phosphorite treatment process.

Analysis of Wet-Process Phosphoric Acid and By-Product Filter Cake by X-ray Spectrometry

1984 ◽  
Vol 28 ◽  
pp. 221-226
Author(s):  
Wendell D. Wilhide ◽  
Doris H. Ash
Keyword(s):  
Phosphoric Acid ◽  
Calcium Sulfate ◽  
Filter Cake ◽  
Lithium Carbonate ◽  
Chemical Analyses ◽  
Element Analysis ◽  
X Ray ◽  
Wet Process ◽  
Control Precision ◽  
Preparation Techniques

AbstractRapid X-ray fluorescence (XRF) analytical methods have been developed for analyzing wet-process phosphoric acid liquid samples and by-product calcium sulfate filter-cake solids. Liquid acid samples are neutralized by lithium carbonate and pressed-pellet, dry sample wafers are prepared for a nine-element analysis. Filter-cake solids are dehydrated to anhydrous calcium sulfate for a ten-element analysis. Hovel sample preparation techniques are described which permit maximum use of the automated XRF system for process control. Precision obtained for typical materials is compared with results of conventional chemical analyses.

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