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1·Test result shows that the mixing of this three materials accompany with increasing grind fineness, the strength of compound cement with large amount of fly ash can be improved significantly.

试验结果表明，选用粉煤灰、低钙石与沸石复合三掺，并相应提高粉磨细度，可明显地提高大掺量粉煤灰复合水泥的强度。

2·The effects of various factors including grind fineness, sorts of dispersant, slurry concentration, stirring time on the preparation of refined montmorillonite are emphatically investigated.

重点考察了蒙脱石在分散提纯过程中分散剂的种类和用量、矿浆浓度和搅拌时间对提纯效果的影响。