Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for improving hydration activity of desorbed soil generated by treating polluted soil in cement kiln
The invention provides a method for improving hydration activity of desorbed soil generated by treating polluted soil in a cement kiln, which comprises the steps of S1, removing foreign matters from the polluted soil and iron tailings, crushing, and mixing with the iron tailings through a stirrer after crushing; S2, calcining the soil mixed in the S1 to obtain desorbed soil, and uniformly mixing the treated desorbed soil with silica fume and sodium silicate to form desorbed soil mixed powder; S3, dissolving acid sodium salt in water to obtain a solution A, adding a cellulose solution, mixing to obtain a solution B, and ultrasonically or mechanically stirring and mixing the desorbed soil mixed powder and the solution B to obtain a modified suspension; and S4, carrying out spray drying on the modified suspension obtained in S3, and simultaneously carrying out ultrasonic stirring or mechanical stirring and mixing. According to the method for improving the hydration activity of the desorbed soil generated by treating the polluted soil in the cement kiln, land resources are prevented from being invaded and occupied, and meanwhile, feasible substitutes are provided for mineral admixtures such as coal ash which are increasingly scarce.
本发明创造提供了一种提高水泥窑处置污染土产生脱附土的水化活性的方法，S1：对污染土和铁尾矿去除异物，进行粉碎，粉碎后与铁尾矿经过搅拌机混合；S2：将S1中混合后的土壤煅烧可得脱附土，脱附土处理过后与硅灰、硅酸钠、混匀形成脱附土混合粉料；S3：将酸钠盐溶于水得到溶液A，加入纤维素溶液进行混合，得到溶液B，将脱附土混合粉料和溶液B进行超声或机械搅拌混合，得到改性悬浮液；S4：将S3中得到的改性悬浮液，进行喷雾干燥同时进行超声搅拌或机械搅拌混合。本发明创造所述的一种提高水泥窑处置污染土产生脱附土的水化活性的方法，避免了侵占土地资源，同时为日益紧缺的粉煤灰等矿物掺和料提供了可行的替代品。
Method for improving hydration activity of desorbed soil generated by treating polluted soil in cement kiln
The invention provides a method for improving hydration activity of desorbed soil generated by treating polluted soil in a cement kiln, which comprises the steps of S1, removing foreign matters from the polluted soil and iron tailings, crushing, and mixing with the iron tailings through a stirrer after crushing; S2, calcining the soil mixed in the S1 to obtain desorbed soil, and uniformly mixing the treated desorbed soil with silica fume and sodium silicate to form desorbed soil mixed powder; S3, dissolving acid sodium salt in water to obtain a solution A, adding a cellulose solution, mixing to obtain a solution B, and ultrasonically or mechanically stirring and mixing the desorbed soil mixed powder and the solution B to obtain a modified suspension; and S4, carrying out spray drying on the modified suspension obtained in S3, and simultaneously carrying out ultrasonic stirring or mechanical stirring and mixing. According to the method for improving the hydration activity of the desorbed soil generated by treating the polluted soil in the cement kiln, land resources are prevented from being invaded and occupied, and meanwhile, feasible substitutes are provided for mineral admixtures such as coal ash which are increasingly scarce.
本发明创造提供了一种提高水泥窑处置污染土产生脱附土的水化活性的方法，S1：对污染土和铁尾矿去除异物，进行粉碎，粉碎后与铁尾矿经过搅拌机混合；S2：将S1中混合后的土壤煅烧可得脱附土，脱附土处理过后与硅灰、硅酸钠、混匀形成脱附土混合粉料；S3：将酸钠盐溶于水得到溶液A，加入纤维素溶液进行混合，得到溶液B，将脱附土混合粉料和溶液B进行超声或机械搅拌混合，得到改性悬浮液；S4：将S3中得到的改性悬浮液，进行喷雾干燥同时进行超声搅拌或机械搅拌混合。本发明创造所述的一种提高水泥窑处置污染土产生脱附土的水化活性的方法，避免了侵占土地资源，同时为日益紧缺的粉煤灰等矿物掺和料提供了可行的替代品。
Method for improving hydration activity of desorbed soil generated by treating polluted soil in cement kiln
一种提高水泥窑处置污染土产生脱附土的水化活性的方法
LIU TONG (Autor:in) / LIU SHUANG (Autor:in) / HAN XIAOGUANG (Autor:in) / ZHAO HONGJIE (Autor:in) / ZHANG PENGYU (Autor:in) / SUN CHUNFENG (Autor:in) / LIU FENGDONG (Autor:in) / GUO QINGFANG (Autor:in) / BAI XIQING (Autor:in) / LIU ZHEN (Autor:in)
20.08.2021
Patent
Elektronische Ressource
Chinesisch
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