利用湖泊淤泥制備節能砌塊

摘要： 研究了利用武漢北湖污泥制備節能砌塊.在不同含量污泥(60%～100%)中加入粉煤灰和添加劑,檢驗了燒成樣品的強度并與相關國家標準比較.結果顯示:加入添加劑能提高燒成樣品的強度,砌塊的導熱系數較低,同時粉煤灰和添加劑也可以寬化燒成溫度范圍和降低燒成溫度.燒成樣品的毒物浸出試驗顯示重金屬的浸出容量低于國家標準.較佳制備節能砌塊的工藝條件為:80%的污泥+10%的添加劑+10%的粉煤灰,在1000℃保溫60 min. Abstract： Energy saving blocks manufactured from lake sludge were investigated. Different contents of lake sludge (60%～100% by weight) were mixed with fly ash and additive. The blending strength, compressive strength of the fired samples were examined and compared with the Chinese National Standards (CNS). Results show that additive can result in the improvement of strength and blocks thermal conductivity is low. At the same time, fly ash and additive may also broaden the firing temperature range and reduce firing temperature. Toxic characteristic leaching procedure (TLCP) tests of blocks also show that the metal leaching level is low. The conditions for manufacturing good quality blocks are 80% sludge with 10% additive and 10% fly ash fired at 1000℃ for 60 min. 作 者： 李方文    吳建鋒    徐曉虹    蘇賢禮    LI Fang-wen    WU Jian-feng    XU Xiao-hong    SU Xian-li   作者單位： 武漢理工大學材料科學與工程學院,湖北,武漢,430070  期 刊： 中山大學學報(自然科學版)  ISTICPKU   Journal： ACTA SCIENTIARUM NATURALIUM UNIVERSITATIS SUNYATSENI  年，卷(期)： 2007, 46(z1)  分類號： X705  關鍵詞： 污泥    節能砌塊    強度    顯微結構    Keywords： lake sludge    energy saving blocks    strength    microstructure   

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