某铁矿厂尾矿固化体蒸发量模型研究
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作者单位:

1.华东交通大学;2.武汉大学

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TU43

基金项目:

国家自然科学基金项目(41972291);江西省教育厅自然科学基金(GJJ190300)


Study on evaporation model of tailings cemented paste from an Iron ore plant
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EAST CHINA JIAOTONG UNIVERSITY

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    摘要:

    本文以某矿项目为工程依托,通过土-水特征曲线模型、蒸发率-基质吸力模型、含水量-蒸发率模型的推导,建立尾矿固化体蒸发量模型,确定不同龄期固化体的含水量。研究发现:对于65%浓度的尾矿固化体,由于初始含水量较高,不同类型尾矿1d、3d的含水量变化区别不大,到7d时,黏土矿物含量多的尾矿含水量大;对于72%浓度的尾矿,黏土含量对含水量的影响较明显,黏土含量越大,白泥添加越多,固化体7d的含水量越高,其主要原因为黏土矿物的存在使固化体中的蒸发量变小。

    Abstract:

    In this study, through the Soil-water characteristic curve model, evaporation rate-matric suction model and moisture content-evaporation rate model, the evaporation model of tailings cemented paste was established to determine the moisture content of tailings cemented paste at different ages. According toSresearchSfindings, while the concentration of tailings cemented paste is 65%, different types of tailings have little difference in change of moisture content during 1d and 3d, because of the initial water content is higher. Tailings cemented paste with more clay content have higher moisture content during 7d. While the concentration of tailings cemented paste is 72%, The moisture content is obviously affected by the clay content, high clay content mesns high clay particles, make the moisture content of tailings cemented paste higher, this is due to clay minerals reduce evaporation in the tailings cemented paste.

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  • 收稿日期:2021-03-22
  • 最后修改日期:2021-04-09
  • 录用日期:2021-04-12
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