A kind of improver for deep desulfurization of phosphorus iron ring

Abstract

The invention discloses a rare earth element mineral as a modifier for deep desulfurization of a phosphorus-iron ring, and the modifier is a mixture of specific rare earth element minerals and calcium-containing phosphorus minerals. The improver for deep desulfurization of phosphorus iron rings can realize the goal of deep desulfurization of low-sulfur phosphorus iron rings, and the desulfurization rate can reach more than 72%.

Description

technical field

[0001] The invention relates to the fields of metal smelting and raw material preparation, in particular to a modifier for deep desulfurization of phosphorus iron rings. Background technique

[0002] The phosphor iron ring is a key component connecting the anode carbon block and the guide rod in the production of electrolytic aluminum, and the phosphor iron ring needs to be replaced regularly. Recycling of waste phosphorus iron rings has become the focus and difficulty of research and development. For the recycling and regeneration of waste phosphorus iron rings, the content control of sulfur element is the key point and key point. The increase of sulfur content will reduce the electrical conductivity and increase the smelting viscosity. The current regeneration process is to melt and refine the waste phosphorus iron rings and regulators together for desulfurization operation, but since the sulfur content in the reused phosphorus iron rings needs to be ≤0.05w...

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