采用硫酸与盐酸混合浸出的方法提取锑鼓风炉渣中的铁,考察了浸出时间、反应温度、盐酸加入量、硫酸浓度等对铁提取效果的影响,并在此基础上研究了超声辅助浸出的效果。结果表明,铁的最佳浸出条件为:炉渣量3 g、浸出时间2 h、反应温度80...采用硫酸与盐酸混合浸出的方法提取锑鼓风炉渣中的铁,考察了浸出时间、反应温度、盐酸加入量、硫酸浓度等对铁提取效果的影响,并在此基础上研究了超声辅助浸出的效果。结果表明,铁的最佳浸出条件为:炉渣量3 g、浸出时间2 h、反应温度80℃、1∶1硫酸10 m L、浓盐酸6 m L,此时铁浸出率为87.89%。相同浸出条件下超声辅助浸出可以缩短反应时间至0.5 h。展开更多
The effects of transformation of slag composition and additive agents on the morphology, the precipitation behavior, the crystal growth, and the volume fraction (VF) of perovskite (CaO·¤TiO_2) crystal in the...The effects of transformation of slag composition and additive agents on the morphology, the precipitation behavior, the crystal growth, and the volume fraction (VF) of perovskite (CaO·¤TiO_2) crystal in the Ti-bearing blast furnace slags were investigated. As the morphology of perovskite is dispersed in molten slags, the crystal growth mechanism of the melting of fine dendrites and the coarsening of large grains exist throughout the solidification of molten slags. With the increase of CaO and Fe_2O_3 content, VF of perovskite obviously increases. However, high basicity leads to the viscosity of slag, which results in the reduction of the average equivalent diameter (AED). The experimental results showed that the presence of the additives CaF_2 and MnO efficiently decreased the viscosity of the slags, and obviously improved the morphology of perovskite and promoted its growth.展开更多
文摘采用硫酸与盐酸混合浸出的方法提取锑鼓风炉渣中的铁,考察了浸出时间、反应温度、盐酸加入量、硫酸浓度等对铁提取效果的影响,并在此基础上研究了超声辅助浸出的效果。结果表明,铁的最佳浸出条件为:炉渣量3 g、浸出时间2 h、反应温度80℃、1∶1硫酸10 m L、浓盐酸6 m L,此时铁浸出率为87.89%。相同浸出条件下超声辅助浸出可以缩短反应时间至0.5 h。
基金supported by the National Natural Science Foundation of China(No.50234040).
文摘The effects of transformation of slag composition and additive agents on the morphology, the precipitation behavior, the crystal growth, and the volume fraction (VF) of perovskite (CaO·¤TiO_2) crystal in the Ti-bearing blast furnace slags were investigated. As the morphology of perovskite is dispersed in molten slags, the crystal growth mechanism of the melting of fine dendrites and the coarsening of large grains exist throughout the solidification of molten slags. With the increase of CaO and Fe_2O_3 content, VF of perovskite obviously increases. However, high basicity leads to the viscosity of slag, which results in the reduction of the average equivalent diameter (AED). The experimental results showed that the presence of the additives CaF_2 and MnO efficiently decreased the viscosity of the slags, and obviously improved the morphology of perovskite and promoted its growth.
