Gonçalves Deyvid R R, Fontes Wanna C, Mendes Julia C, Silva Guilherme J B, Peixoto Ricardo A F
Laboratory of Materials for Civil Construction, Federal University of Ouro Preto, Minas Gerais, Brazil.
Laboratory of Materials for Civil Construction, Federal University of Ouro Preto, Minas Gerais, Brazil
Waste Manag Res. 2016 Feb;34(2):107-12. doi: 10.1177/0734242X15615955. Epub 2015 Dec 3.
The utilisation of steelmaking slag as recycled aggregate for concretes is a widely investigated solution for mitigating the expenditure and environmental impacts of its storage. The Brazilian steel industry is investing in research and slag reprocessing practices, aiming to reuse most of its metallic fraction and properly allocate the non-metallic fraction, saving energy and reducing mining impacts. Research results demonstrate the technical and environmental feasibility of steel slag aggregates for civil construction. However, it is essential to evaluate whether the processing of the slag is economically feasible for this purpose. Economic analysis of the processing of steel slag was conducted through simulation - Monte Carlo method - in which it is possible to determine the risks and uncertainties inherent to the project. The costs that comprise the proposed project, from design through construction and operation itself, were estimated at US$2.8 million. The result of the simulation indicates economic feasibility of the project with 98% certainty, and an estimated profit of around 42%.
将炼钢炉渣用作混凝土的再生骨料是一种为减轻其储存成本和环境影响而被广泛研究的解决方案。巴西钢铁行业正在投资开展研究和炉渣再加工实践，旨在重新利用其大部分金属成分，并合理配置非金属成分，从而节约能源并减少采矿影响。研究结果证明了钢渣骨料用于民用建筑的技术和环境可行性。然而，评估这种炉渣加工在此用途上是否经济可行至关重要。通过模拟——蒙特卡洛方法——对钢渣加工进行了经济分析，在该方法中可以确定项目固有的风险和不确定性。拟议项目从设计到施工及运营本身所涉及的成本估计为280万美元。模拟结果表明该项目有98%的确定性具有经济可行性，估计利润率约为42%。
