The results show that the main component of the coal shale which can be used as polymer filler are clay and organic compound.
实验表明，适宜作为聚合物填料使用的煤矸石原料，其主要成分应该是粘土类矿物和碳质有机化合物。
Attapulgite is usually used as a filler in nowaday complex fertilizers manufacture, but this clay mineral should extract and grind to powder.
当前复合肥生产普遍利用凹凸棒土作填料，利用这种粘土矿物需要开采并磨成细粉。
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