海洋粘土的组成及性能测试

为了海洋粘土的开发利用，对东太平洋中国大洋调查区的所有采集样品进行了粒度分析。结果发现粘土沉积物的粒度明显细小；通过红外光谱测试可将沉积物分为八个矿物组合类型，其中以粘土沉积物类型为主，且粘土矿物含量较高；吸水率测试结果证明海洋粘土具有较强的吸水性；典型海洋粘土样品的理化性能测试结果表明，与地表粘土相比，海洋粘土的膨胀容、胶质价、阳离子交换量及吸蓝量都相对较低；X射线衍射结果显示，海洋粘土的结晶程度明显偏差。综合分析海洋粘土的结构特征及理化性能，认为其活性比地表同类粘土大，预示着海洋粘土将会有更好更广的用途。

The composition and property of sea clays

In order to explore and utilize sea clay, the anthers sampled days in east Pacific of China Ocean area and studied their grain-size distribution It is found that the sea clay sediment is very fine-grained. According to infrared spectrum determination result, the sediments can be divided into eight mineral types, most contained rich clay minerals and were strong in hydrophilicity, chemophysically, the swelling volume, colloid value, CEC and blue absorbing amount of the sea clays were all less than that of and surface clays. X-ray diffraction analysis shows that the crystallinity of the sea clays was very low. The activity of the sea clay is higher than land surface clays, showing wide and potential utilization of the sea day in tnture.