Agent for treating molten metals, method for the production and use thereof

摘要

The invention relates an agent for treating molten metals, in particular for dephosphorizing pig iron melts, containing at least calcium oxide, optionally at least one other element in the elementary and/or bound state, selected from the group including alkali metals, alkaline earth metals or earth metals and bitumes in an amount between 1-30 wt.-% or a mineral oil and/or paraffin oil, in an amount between 1-25 wt. %. The agent is suitable, in particular, for treating pig iron melts, according to a mono-, co- or multi-injection method, but also for stirring, for example, according to the KR stirring method.

主权项

1. A process for dephosphorization of a pig iron melt comprising: blowing in, stirring in or adding under conditions for dephosphorization a grained agent into a treatment vessel containing pig iron, wherein the agent at least contains calcium oxide, and either i) bitumen in a quantity of 1 to 30% by weight or ii) a mineral oil and/or paraffinic oil, in a quantity of 1 to 25% by weight.