Title:Overview of Current Phosphoric Acid Production Processes and a New Idea of Kiln Method
Volume: 18
Issue: 3
Author(s): Guangya Zheng, Jupei Xia* Zhengjie Chen*
Affiliation:
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan,China
- Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan,China
Keywords:
CDK processes, Kiln method, phosphoric acid, phosphorus ores, thermal methods, wet process.
Abstract: China primarily contains medium and low-grade phosphorus ores that are used to produce
phosphoric acid. Here, we provide an overview of phosphoric acid production processes, including
wet, thermal, and Kiln methods, as well as the fundamental principles, major equipment, and technological
aspects of each process. Progress in the Kiln method using low-grade phosphate rock is described,
which involves the KPA and CDK processes. The literature shows that the addition of admixtures
adds great competitiveness to Kiln phosphate production methods and has considerable development
prospects.