The burnability of the cement raw meal prepared by shale or yellow-sand has been studied in this paper.
本文研究了以黄沙或页岩代替粘土质原料配制水泥生料的易烧性。
The developed sintered brick made from gangue and fly ash as industrial wastes as well as weathered shale as main raw materials has obviously social and economic benefits.
以工业废渣煤矸石、粉煤灰及风化页岩为主要原料研制成烧结砖，具有较明显的社会效益和经济效益。
With pure raw material shale, the tile is sintered in high temperature without glazed surface, and some products can be recycled and reused.
砖的成份单纯，主要以页岩为主，表面不施釉，产品经高温烧制，部分产品可以回收再利用。
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