The influence of batch preparation on the properties of blast-furnace coke is considered for OAO Zapadno-Sibirskii Metallurgicheskii Kombinat. In particular, the influence of the batch composition and its preparation and heating conditions on the strength of blast-furnace coke is investigated. It is found that increasing the moisture content of the batch from 7.3 to 12.6% impairs coke strength: M10 changes from 7.8 to 9.4%. The mechanical strength is also reduced by increasing the ash content and reducing the piece size of K, OS, and KS coal.