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锰铁炉渣是锰工业生产中的产物,对其进行了矿物学鉴定,含有较高含量Mn的该炉渣用光学显微镜、XRD分析仪和电子显微镜进行分析,却没有发现有单独的含锰氧化物矿物相,炉渣是非晶形体的。在原始矿样中通过XRD分析没有确认出晶体相。然而,在细粒中却识别出了石英、扫描电子显微镜(SEM)显示在没有形式矿物相的基体中含有Mn、Si、Al和Ca,进行了用硫酸浸出的实验以确定锰能否从炉渣中浸取出来。在室温、固液比为1:10,稀硫酸为浸出剂时,几乎100%的锰能被溶解出来。杂质可由调节pH值而沉淀除去,这样得到了适合生产MnO_2或电解金属锰的原料-硫酸锰溶液,根据实验,提出了从锰铁炉渣中回收有价值的锰的合适的工艺流程。
Ferromanganese slag is a product of manganese industrial production and is subjected to mineralogical identification. The slag, which contains a relatively high amount of Mn, was analyzed by light microscopy, XRD analysis and electron microscopy, but no single manganese-containing oxide Mineral phase, slag is amorphous. No crystallographic phase was confirmed by XRD analysis in the original sample. However, quartz was identified in the fines, and scanning electron microscopy (SEM) showed that Mn, Si, Al and Ca were contained in the matrix without the mineral phase, and experiments with sulfuric acid leaching were conducted to determine whether manganese could be recovered from the slag Leaching out. At room temperature, solid-liquid ratio of 1:10, dilute sulfuric acid as leaching agent, almost 100% of manganese can be dissolved out. Impurities can be removed by adjusting the pH value. Thus, a suitable raw material for producing MnO 2 or electrolytic manganese metal is obtained, that is, a manganese sulfate solution. According to experiments, a suitable process for recovering valuable manganese from ferromanganese slag is proposed.