以湖北松宜煤系高岭土为原料，研究了煤系高岭土煅烧过程中煅烧温度、保温时间、升温速度、添加剂等因素对煅烧产品白度的影响。

Some experimental research was conducted on the effect of the calcining temperature, remaining time, temperature system of calcinations and additives on the whiteness of calcined kaolin.

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每层的松铺厚度以30cm为宜，摊铺阼度应均匀，压实后的表面应平整。

Each layer of loose paving thickness should be 30cm, paving the last degree should be uniform, the surface should be smooth after compaction.

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每层的松铺厚度以30cm为宜，摊铺阼度应均匀，压实后的表面应平整。

Each layer of loose paving thickness should be 30cm, paving the last degree should be uniform, the surface should be smooth after compaction.

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