Study on the Ratio of Ultrafine Admixture Prepared from Stainless Steel Metallurgical Waste
In the context of energy conservation and sustainable development,it is imperative to address the environmental pol-lution resulting from the extensive accumulation of metallurgical solid waste.With a focus on industrial solid waste generated during stainless steel production-nickel iron slag and stainless steel slag,this study investigated the optimal blending proportions of pow-dered coal ash,desulfurization gypsum,and superfine slag based on mechanical properties as performance indicators.The findings indicate that the proportion of nickel iron slag and stainless steel slag added exerts the most significant influence on the activity of the superfine blended material,followed by the amount of powdered coal ash added.The impact of desulfurization gypsum addition is relatively minor.Grinding to a specific surface area exceeding 600cm2/g does not notably enhance activity further.The optimal blending ratio for the superfine waste blending material is determined to be nickel iron slag:stainless steel slag=8:2,with a pow-dered coal ash content of 20％,SO3 content at3.0％,and specific surface area reaching 600cm2/g.Under these conditions,the 28-day activity level of the superfine blended material reaches its peak,with an 80％activity at day 7 and a 91％activity at day 28.
nickel iron slagstainless steel tailingsultra fine grindingadmixturesmix proportion
万方数据
维普
