测定了FeSNa2S系熔剂组成及相关工艺因素对钢液脱铜率ηCu和增硫值Δ[S]的影响关系。结果表明，随熔剂中FeS/Na2S配比按30/70、40/60、50/50、60/40、70/30的变化次序，其相应ηCu值不断增大，而其Δ[S]值依次降低。控制FeS/Na2S配比为70/30时，可获得48%左右的脱铜率和最小Δ[S]值。添加BaO的熔剂组成为40%FeS40%BaO20%Na2S时，可达到提高熔剂脱铜能力和减少铁液增硫的效果。
The influence of composition of FeSNa2S flux and relevant technological factors on decu rate ηCu and sulfur pickup Δ[S] was investigated. The results show that the decu rate ηCu was increased continually, and values of Δ[S] were decreased successively with the order of FeS/Na2S ratio in the flux: 30/70, 40/60, 50/50, 60/40, 70/30. The ηCu of about 48% and minimum value of Δ[S] was achieved by controlling the flux composition to FeS/Na2S ratio=70/30. When the BaO was added to the FeSNa2S flux, the capability for decopperization and suppressing Δ[S] can be significantly enhanced if the composition of the flux is 40%FeS40%BaO20%Na2S.
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