TY - GEN
T1 - Yellow Phosphorus Production from Phosphoric Acid by Carbothermic Reduction
AU - Yu, Huafang
AU - Yoshida, Ryoko
AU - Sasaki, Yasushi
AU - Nagasaka, Tetsuya
N1 - Funding Information:
The authors are thankful to the Japan Science and Technology Agent with the No. JPMJMI17C2 for financial support.
Publisher Copyright:
© 2022, The Minerals, Metals & Materials Society.
PY - 2022
Y1 - 2022
N2 - Phosphorous is an essential element for agriculture and industry and is a non-renewable resource. Especially yellow phosphorus is a critical material for advanced industrial technology, but phosphorus resources were not produced in Japan, and all depend on imports. It has been suggested, however, that the remaining accessible reserves of phosphate ore will be depleted within 50 years. Therefore, alternative resources for phosphate ore must be found. In this research, we have developed a process that enables the production of high-purity yellow phosphorus from domestic unused phosphorus resources such as steelmaking slags. The process consists of two parts: (1) the production of crude phosphoric acid from wastes such as steelmaking slag; (2) producing high-purity yellow phosphorus by low-temperature carbothermic reduction of phosphoric acid (H3PO4). The details of the carbothermic reduction of phosphoric acid are presented in this paper. Yellow phosphorus is commercially produced by carbothermic reduction of phosphate ore in an electric arc furnace at more than 1673 K. In the newly developed system, gaseous P4O10 evaporated from H3PO4 is successfully reduced to yellow phosphorus using a carbon-packed bed at less than 1273 K. To meet the depletion of phosphate ore, the proposed process in this study to produce yellow phosphorus by carbothermic reduction of H3PO4 that are extracted from dephosphorization slags will be one of the practical and economical solutions.
AB - Phosphorous is an essential element for agriculture and industry and is a non-renewable resource. Especially yellow phosphorus is a critical material for advanced industrial technology, but phosphorus resources were not produced in Japan, and all depend on imports. It has been suggested, however, that the remaining accessible reserves of phosphate ore will be depleted within 50 years. Therefore, alternative resources for phosphate ore must be found. In this research, we have developed a process that enables the production of high-purity yellow phosphorus from domestic unused phosphorus resources such as steelmaking slags. The process consists of two parts: (1) the production of crude phosphoric acid from wastes such as steelmaking slag; (2) producing high-purity yellow phosphorus by low-temperature carbothermic reduction of phosphoric acid (H3PO4). The details of the carbothermic reduction of phosphoric acid are presented in this paper. Yellow phosphorus is commercially produced by carbothermic reduction of phosphate ore in an electric arc furnace at more than 1673 K. In the newly developed system, gaseous P4O10 evaporated from H3PO4 is successfully reduced to yellow phosphorus using a carbon-packed bed at less than 1273 K. To meet the depletion of phosphate ore, the proposed process in this study to produce yellow phosphorus by carbothermic reduction of H3PO4 that are extracted from dephosphorization slags will be one of the practical and economical solutions.
KW - Carbothermic reduction
KW - Dephosphorization slags
KW - Phosphoric acid
KW - Yellow phosphorus
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U2 - 10.1007/978-3-030-92563-5_31
DO - 10.1007/978-3-030-92563-5_31
M3 - Conference contribution
AN - SCOPUS:85125257107
SN - 9783030925628
T3 - Minerals, Metals and Materials Series
SP - 297
EP - 302
BT - REWAS 2022
A2 - Lazou, Adamantia
A2 - Daehn, Katrin
A2 - Fleuriault, Camille
A2 - Gökelma, Mertol
A2 - Olivetti, Elsa
A2 - Meskers, Christina
PB - Springer Science and Business Media Deutschland GmbH
T2 - 7th Installment of the REWAS conference series held at the TMS Annual Meeting and Exhibition focuses on developing tomorrow’s technical cycles, 2022
Y2 - 27 February 2022 through 3 March 2022
ER -
