凹凸棒石粘土简称凹土，用途广泛，凹凸棒石粘土被称为“千土之王”。 凹凸棒石粘土矿为土块状结构，颜色为灰白、青灰、浅黄和浅绿。油脂光泽，比重轻，摩氏硬度2-3级，潮湿时呈粘性和可塑性，干燥收缩小，且不产生龟裂，吸水性强，可达到150%以上，PH=8.5左右。
... 膨胀粘土和页石 expanded clay and shale 蒙脱石粘土 montmorillonitic clay 凹凸棒石粘土 Palygorskite clay ...
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... 凹凸棒石 attapulgite 凹凸棒石粘土 calcined palygorskite clay 凹凸棒石黏土 attapulgite ...
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By the contrast, it was found that the addition of attapulgite clay in the UASB reactor could shorten the granulation process of the inoculation sludge. Thus, the startup process is accelerated.
接种污泥的颗粒化是UASB反应器启动的目标和启动成功的标志，本课题通过在UASB反应器的启动过程中投加凹凸棒石粘土和未投加凹凸棒石粘土的对比启动实验发现，投加凹凸棒石粘土能够缩短UASB反应器内接种污泥的颗粒化进程，从而加速了反应器的启动过程，此外反应器的运行状况也得到了一定程度的改善和提高。
参考来源 - UASB反应器内污泥颗粒化过程加速的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
研究表明凹凸棒石粘土对铯的吸附能力优于锶。
Sorption of Sr, Cs on the attapulgite clays treated with modifier is especially notable under the alkali amd oxidative condition.
凹凸棒石粘土形成的物理化学条件为偏碱性的还原条件。
The physicochemical conditions for the forming of palygorskite clays were alkaline and reduction.
研究结果表明：提纯和热处理并不能有效的改善凹凸棒石粘土的吸湿性能。
The results show that the purification and the heat treating can not improve the hygroscopic property of attapulgite effectively.
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