7TH EUROPEAN COKE AND IRONMAKING CONGRESS - ECIC 2016

Upgrading and de-bottlenecking by improving the existing becomes more and more important in these economically demanding times. PAUL WURTH is proposing a series of solutions that tackle the challenges of production and maintenance cost reduction, productivity increase, emission reduction. Optimized sintering starts with a precise control of the humidity of the raw mix, followed by automatic humidity adjustment before and after nodulizing. Sinter production cost can be reduced by using finer iron ore, which however requires some adaptations to counterbalance the effect of the finer granulometry. Extensive tests have been conducted employing high intensive mixers, fine-tuning the permeability of the raw mix when using fine ores. The positive effects of the addition of burnt lime combined with a high intensive mixing arrangement will be described. Reline of ignition hoods can be either focused on reducing the quantity of internal return fines, reducing the gas or solid fuel consumption or increasing the production rate. The vertical burner technology is being further developed and promoted for these purposes. The paper will give insight into recent references and describe further technologies for improving existing plants. Special focus will be put on the auditing capabilities of PAUL WURTH in relation to process improvements as well as to servicing.