The rice husk is a ligneous hard layer of the cereal with high silicate content.

稻壳灰是具有高硅酸盐含量的谷类的一种木质的硬层。

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According to the analysis about the Shanghai Institute of Silicate facies showed purple Wong belongs kaolin - quartz - mica type, high iron content, the highest iron amounted to 8.83%.

根据上海硅酸盐研究所有关岩相的分析表明，紫砂黄泥属高岭—石英—云母类型，含铁量很高，最高含铁量达8.83%。

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High performance mineral polymer can be prepared while the content of sodium silicate in the alkaline liquid and the standard sand in the solid materials are both kept around 70%.

硅酸钠水玻璃在液相中的比例约为70%，且标准砂占固相的比例为70%左右时，可制得力学性能良好的矿物聚合材料。

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