研究了碳化稻壳(CRH)的真空高温除杂,考察了粒度、保温时间、保温温度和压力对除杂效果的影响.得到最佳工艺为:CRH粒度在75μm以下、保温时间120 min、保温温度1 100℃、压力70 kPa.在此最佳工艺条件下,CRH中磷的去除率达91.85％、硫的去除率达88.96％.
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