钢渣中水化惰性矿物的化学物相分析

发布时间：2018-02-21 20:18

  本文关键词： 钢渣 铁 四氧化三铁 RO相 化学物相分析 选择性溶解　出处：《硅酸盐学报》2016年05期 　论文类型：期刊论文

【摘要】：为评价钢渣胶凝活性和检测钢渣活化加工工艺技术指标,探索了钢渣中金属Fe、Fe_3O_4和RO相3种惰性矿物含量的化学物相分析方法。钢渣中Fe含量测定采用碘乙醇溶液选择性溶解法,在该法中Fe是唯一可溶性矿物成分,由溶解量测定出Fe含量。Fe_3O_4含量测定采用10%HNO3溶液选择性溶解法,不溶性矿物包括Fe_3O_4和耐火材料杂质,磁性不溶物即为Fe_3O_4。钢渣中RO相含量测定采用EDTA-DEA-TEA(乙二胺四乙酸二钠-二乙胺-三乙醇胺)选择性溶解法,不溶性成分包括Fe、Fe_3O_4、RO相和耐火材料杂质,由磁性不溶物量减去Fe、Fe_3O_4含量即为RO相含量。钢渣矿物相粒度小且相互包裹,为确保溶解精度需采用溶解(1.5 h) 湿磨 再溶解(1.5 h)3步工序,中间湿磨后试样为6或8μm以下,溶液温度保持30℃。
[Abstract]:In order to evaluate the cementitious activity of steel slag and to detect the technological index of activated processing of steel slag, the chemical phase analysis method of three kinds of inert mineral contents in steel slag, Feal Fe3O4 and RO phase, was explored. The content of Fe in steel slag was determined by selective dissolution of iodide ethanol solution. Fe is the only soluble mineral component in this method. The content of Fe, Fe _ 3O _ 4 and C _ 2O _ 4 is determined by selective dissolution in 10HNO _ 3 solution. The insoluble minerals include Fe_3O_4 and refractory impurity. The content of RO phase in steel slag was determined by EDTA-DEA-TEAA (EDTA-DEA-TEA-EDTA-DEA-TEA-triethanolamine) method. The insoluble components included Fetife _ 3O _ 4o _ 4o _ ro phase and refractory impurity. The amount of magnetic insoluble matter minus Feal Fe3O4 is the content of RO phase. The mineral phase of steel slag is small in size and wrapped in each other. In order to ensure the dissolution accuracy, it is necessary to adopt dissolving 1.5 h) and then dissolve in 1.5 h or 3 steps. After the intermediate wet grinding, the sample is below 6 or 8 渭 m. The solution temperature is kept at 30 鈩，

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