FIELD: process engineering.
SUBSTANCE: invention relates to destruction of solid iron blocks, including waste forming rolls and may be used at drop-hammer plants. Irregular thermal strains are created inside iron block. For this, high-temperature jet-piercing heat source is used to drill blast-hole in said block to be gradually advanced there inside. Required depth reached, heat source is stopped to go on feeding heat inside the block via formed blast-hole. Said high-temperature jet-piercing heat source represents a thermal oxygen lancing. Intensive heating of block inside results from combustion of oxygen lance.
EFFECT: expanded performances.
6 cl, 5 dwg
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