1. It is an important path to exploitage synthetically to manufacture Haydite with Fly Ash.
   粉煤灰已经作为一种矿物资源综合利用。
2. Two technologies of sintering municipal sewage sludge for manufacturing haydite ("wet process granulation-sintering" and "anhydration-sintering") were studied.
   通过试验比较了“湿法造粒-烧结”和“干化-烧结”2种利用城市生活污泥烧结制陶粒的工艺路线。

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