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以连续法用混合钨精矿——白钨精矿(CaWO_4)与黑钨精矿(Fe·Mn)WO_4熔炼含W72—76%的钨铁时,P 在冶炼产物中的分布情况是极不均匀的(表1)。大约有80%的 P 留在合金中,废渣中含 P 只有0.004%。磷以化合物状态有一部分挥发,这种磷化物可用电气除尘器收集到。如果精矿中 P/WO_3的含量比(重量%比)为0.493·10~(-3),则电气除尘器收集的粉尘中 P/WO_3为,7.5·10~(-3),这要高得多。由于炉料中自钨矿与黑钨矿的配比不同,废渣中 nCaSiO_4与 mMnsiO_4的含量亦不
The distribution of P in the smelting products is very poor when using continuous tungsten ore mixed with scheelite (CaWO_4) and wolframite (Fe.Mn) WO_4 to smelt tungsten iron with W72-76% Even (Table 1). Approximately 80% of the P remains in the alloy, containing only 0.004% P in the waste. Part of the phosphorus compounds to volatile state, this phosphide can be collected using an electric precipitator. If the content ratio of P / WO_3 in the concentrate is 0.493 · 10 ~ (-3), P / WO_3 in the dust collected by the ESP is 7.5 · 10 ~ (-3), which is higher Much more. Owing to the different ratio of tungsten ore and wolframite in the charge, the content of nCaSiO_4 and mMnsiO_4 in the waste residue is not