|About this Abstract
||Materials Science & Technology 2019
||Processing and Performance of Materials Using Microwaves, Electric and Magnetic Fields, Ultrasound, Lasers, and Mechanical Work – Rustum Roy Symposium
||Vapor Dephosphorization Kinetics from Steel Making Slag by Microwave Rapid Heating
||Noboru Yoshikawa, Manami Sunako, Kazunori Miyamoto, Keita Kawahira, Shoji Taniguchi
|On-Site Speaker (Planned)
Because of running short of natural phosphorous resources, recycling of phosphorous from steel making slag has been taken into consideration. Phosphorous exists in a state of oxides together with iron oxides in the slag. Carbothermic reduction is a necessary process for obtaining phosphorous, however thermodynamics indicates occurrence of simultaneous reduction of iron oxides. If it happens, phosphorous is dissolved into the reduced molten iron and cannot be separated easily anymore.
In order to avoid this phenomenon, a process has been suggested that phosphorous has to be removed in a state of vapor before onset of melting of the reduced iron oxide by means of rapid heating. In our research group, microwave heating application has been investigated for this purpose. In this paper, the experimental results on the kinetics of reduction and the phosphorous removal will be presented.
||Planned: At-meeting proceedings