【摘 要】
：
Steel industry generates two types of slags as by-products, namely iron making slag and steel making slag.The use of Iron making slag also known as BF slag as a constituent of concrete, either as an a
【机 构】
：
National Council for Cement and Building Materials, Ballabgarh, Haryana, India
【出 处】
：
The 14th International Congress on the Chemistry of Cement (
论文部分内容阅读
Steel industry generates two types of slags as by-products, namely iron making slag and steel making slag.The use of Iron making slag also known as BF slag as a constituent of concrete, either as an aggregate or as a cementing material, is well established.However, steel making slag also known as LD Slag due to its non-uniform nature and metallic content was never successfully utilized in cement making and was mostly dumped.Recently new technology has been developed for processing steel slags.JSW Steel, with its unique LD slag granulation facility, has developed a new product-granulated steel slag having favorable physical and chemical properties.Detailed studies have been carried out to evaluate the use of granulated steel slag at various stages in cement manufacturing.The prepared cement blends were studied for their performance characteristics such as consistency, setting time, compressive strength development and soundness.Based on these studies, it is concluded that up to 5% granulated steel slag can be used as performance improver, up to 40% by weight can be added during clinker grinding stage to manufacture cement blends with compressive strengths comparable to control OPC and PSC, and 4.25% by weight can be utilized as raw material replacing iron bearing additive in the raw mix for good quality clinker production.Due to the low cost and ease of availability, granulated steel slag can be a good environmental friendly material for cement industry.
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