Use of Waste Lubricant Oil from Steel Rolling Mills in the Coking Process

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The main objectives of this research have been to study the possibilities of using residual oils from the steel rolling-mill process as an additive in a coal blend to be carbonized in a coke oven plant and, consequently, to reduce the cost of coking blends. This type of residual oils is classified as a hazardous material difficult to get rid of. <br> Previous to the addition to a coking blend, waste oil from the rolling-mill process (tinnol) was treated to remove iron dust materials and reduce water content. Afterwards it was added to coking charges, using an installation specially designed for heating, transport and the pulverization of such oils. <br> The influence of these oil additions on the coking process and coke quality has been studied, using the 250 kg movable wall and the 6 t ovens of the INCAR Experimental Coking Test Plant. A possible method of recycling these waste oils within the coking process has been found, backed by tests carried out to pilot and semi-industrial scale.

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  • ISIJ international  

    ISIJ international 38(1), 23-27, 1998-01-15 

    The Iron and Steel Institute of Japan

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