| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: method of obtaining pelletised metallurgical raw materials includes preparation of charge that consists of iron ore, limestone and coal as main ingredients by iron ore reduction by calcinating, reduced iron ore bonding and calcined products compaction. The charge contains iron ore, limestone and coal in weight ratio 3:1:1 or 14:3:1, note that calcined products are reduced, bonded and compacted into melted metallised sinters simultaneously in one reaction volume, note that obtained sinters are cooled, split to pieces, if necessary corrective additives are added into split product and crushed, the obtained crushed material that contains iron-ore concentrate and cement clinker is used for production of iron-ore pellets metallised up to 45-61% that are hardened by non-roasting method. ^ EFFECT: increase of process energy efficiency and raw material stable strength. |
