The free calcium oxide and the periclase formed in the converter smelting process are primary factor affect the steel slag long-term unstable.

转炉冶炼过程中所形成的游离氧化钙和方镁石是影响钢渣长期不稳定性的主要因素。

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The results showed that the addition of arsenical sludge can effectively influence the content of free calcium oxide and decrease the sintering temperature.

实验结果表明，掺加含砷污泥对熟料游离氧化钙含量影响显著，且能降低烧成温度。

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This standard specified the testing methods of water requirement of normal consistency, setting time as well as soundness of portland cements caused by free calcium oxide.

本标准规定了水泥标准稠度用水量、凝结时间和由游离氧化钙造成的体积安定性的检验方法。

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