Is there any wet-process phosphoric acid purification technology in China?
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Are there any wet-process phosphoric acid purification technologies in China? How many types are there, and what do different companies use?
Domestic: Central China Normal University, Sichuan University; Introduced from Israel: Guizhou Wengfu Group
Israeli technology is used for the extraction process, resulting in high-quality purified products
It depends on whether it’s food-grade or electronics-grade
There are quite a few now; almost all the large phosphorus-based compound fertilizer factories in Hubei are engaged in this activity. The technology developed by Central China Normal University was created at Sanning. The technology from Sichuan University is widely spread; companies in China that use it include Fuling, Liuguo, Sanhuan, and others ； In addition, Hubei Xiangyun has also collaborated with Wuhan University of Technology to produce purified phosphoric acid, as well as industrial-grade monoammonium phosphate, and the quality of these products is quite good.
This industrial production technology is now quite mature in China; we provide the processes as well as complete sets of production equipment for purifying phosphoric acid and producing industrial-grade monoammonium phosphate. 0731-57779995
There are technologies for purification, but they can’t be found online; industrial production is available, though the cost of technology transfer seems to be quite high.
This post was last edited by wmb10d310 on 2017-10-13 at 15:12. Guizhou Wengfu has adopted Israeli technology and improved it through independent research to reach the fourth generation. Its product line includes food-grade and electronic-grade phosphoric acid.
There are some. Fuling is the earliest, Wengfu is the best.