|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||REWAS 2022: Recovering the Unrecoverable
||Yellow Phosphorus Production from Phosphoric Acid by Carbothermic Reduction
||Huafang Yu, Ryoko Yoshida, Yasushi Sasaki, Tetsuya Nagasaka
|On-Site Speaker (Planned)
Phosphorus is an essential element for agriculture and industry and is a non-renewable resource. High purity yellow phosphorus is always produced from high-grade phosphate ore, however, high-grade phosphate ore deposits are rapidly being depleted and claim that economically available deposits may be completely exhausted with a century. Therefore, producing yellow phosphorus from the secondary resource is an urgent matter. In this research, high purity yellow phosphorus was successfully produced from phosphoric acid extracted from steelmaking slag by carbothermic reduction. In the newly developed system, gaseous P4O10 evaporated from H3PO4 is reduced to yellow phosphorus at less than 1273K. Since our process consumes less energy and has a very low environmental impact compared with the current process, it will be one of the promising solutions to meet the depletion of phosphate ore.