The experiment results show that that the elastic modulus is reduced when fly ash only was added to RAC and present a significant difference with the rate of fly ash and slag content.

试验结果表明：粉煤灰单掺会降低再生骨料混凝土的弹性模量，粉煤灰与矿渣双掺对弹性模量的影响随两者组合比例不同而有显著差异。

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The relation. between the con- verting rate of chromium and roasting temperature , the amount of soda , the amount of back slag - copper oxide are also studied.

研究了铬转化率与焙烧温度、配碱量、返渣氧化铜的量等条件的关系。

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Under the above test condition the treated wastewater is disposed of by carbide slag that can react with iron ion by flocculation and remove rate of CF and CT in wastewater can reach 60% to 95%.

在上述实验条件下，对还原处理的废水用电石渣进一步处理，使得废水中的铁离子产生絮凝作用，最终废水中氯仿和四氯化碳的去除率可达到60～95%。

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