Low slag volumes favour high productivities. In the case of Sidmar, the burden consists of more than 90 percent sinter. The iron content of the sinter has been optimized. Slag volume is thus reduced and productivity between 65-70 tHM/m~2.24h is achieved. At high pulverized coal injection rates, the residence time of the coke increases substantially and a higher degree of degradation is to be expected. Therefore, a careful monitoring of the coke and sinter quality is of prime importance. This paper describes the coke and sinter quality used in the Sidmar blast furnaces to control permeability of the furnace with long term PCI rates of 180 kg/tHM and coke rates around 300 kg/tHM. A global quality index has been defined which is well correlated with the blast furnace productivity. Sidmar believes that the quality requirements of the burden can directly be linked with the requested productivity and that good operational practices are necessary for optimization of that productivity.
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机译：渣量少有利于高生产率。对于Sidmar而言，负担包括90％以上的烧结矿。烧结矿的铁含量已优化。因此减少了炉渣体积，并实现了65-70 tHM / m〜2.24h的生产率。在高煤粉喷射速率下，焦炭的停留时间大大增加，并且预计会有更高的降解程度。因此，仔细监测焦炭和烧结矿的质量至关重要。本文描述了在Sidmar高炉中使用的焦炭和烧结矿质量，以控制长期的PCI率为180 kg / tHM和焦炭率为300 kg / tHM来控制熔炉的渗透性。已经定义了全球质量指数，该指数与高炉生产率具有很好的相关性。 Sidmar认为，负担的质量要求可以直接与所要求的生产率联系在一起，并且良好的操作规范对于优化生产率是必不可少的。
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