English to Russian Tech/Engineering Metallurgy / Casting способ и установка для производства железа прямого восстановления

Direct reduced iron (DRI), also called sponge iron, is produced by direct reduction of iron ore (in the form of lumps, pellets or fines) by a reducing gas produced from natural gas or coal. The direct reduction of the iron ore generally takes place in a vertical reactor wherein a burden of iron ore flows downwards, while the reducing gas flows upwards and reacts with the burden.

Куски, комья??? как то звучит не очень. есть ещё "batch lump" - шихтовой ком