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METHODS OF PRODUCING A DRY CEMENT MIXTURE AND A FREE FLOWING FERROUS SULPHATE HYDRATE PRODUCT AND PRODUCTS PREPARED BY THE METHODS.
METHODS OF PRODUCING A DRY CEMENT MIXTURE AND A FREE FLOWING FERROUS SULPHATE HYDRATE PRODUCT AND PRODUCTS PREPARED BY THE METHODS.
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机译:生产干水泥混合物和自由流动的硫酸铁水合物产物的方法以及用该方法制备的产物。
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摘要
A ferrous sulphate hydrate product for use as chromate reducing agent for dry cement is made from a technical or commercial grade ferrous sulphate heptahydrate by one or more treatments selected from moderate drying, powder dilution, physical absorption, and chemical absorption. In particular, the technical grade ferrous sulphate heptahydrate is mixed with fly ash or gypsum and subjected to a moderate drying at temperatures in the range of 20-60oC.
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