About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
12th International Symposium on High Temperature Metallurgical Processing
|
Presentation Title |
Removal of Arsenic from Molten Bearing Steel by Adding Rare Earth Lanthanum |
Author(s) |
Peng Yu, Wang Hongpo, Zhou Xiaoqing |
On-Site Speaker (Planned) |
Peng Yu |
Abstract Scope |
Adding rare earth elements is a potentially effective control method for removing residual elements from molten steel. In this paper, the influence factors of adding lanthanum to remove the residual element arsenic in the molten steel of GCr15 bearing steel have been studied. The results show that the addition of lanthanum, the melting temperature, and the initial sulfur content all significantly affect the removal of arsenic in molten steel. The reaction of lanthanum to remove arsenic from molten steel mainly occurs within 4 minutes after its addition. Avoiding the reaction between lanthanum and the crucible is expected to promote arsenic removal. The removal effect of arsenic in molten steel increases significantly with the increase of the amount of lanthanum added and the decrease of temperature. There is competition between the arsenic removal reaction, the desulfurization reaction, and the lanthanum-crucible reaction by lanthanum. For arsenic removal, the initial sulfur content in molten steel must be controlled within an appropriate range. |
Proceedings Inclusion? |
Planned: |
Keywords |
Aluminum, High-Temperature Materials, Iron and Steel |