| 摘要 |
The method of recycling of secondary slag in the primary smelting of iron: the secondary slag is treated by following steps - natural cooling, de-metallization, mechanical processing and sorting, compaction of its part into a compact form, while secondary slag with metallurgical additives is added as an additive into the primary melting within the mixture with added lime in the weight ratio of 1: 0.5 - 10, wherein the under-sieve slag of 0-12 mm fraction is compacted into the compact form by vibration pressing with addition of 2-35 % by weight of the binder, and then it is dried for 5 hours to 1-7 days under standard atmospheric conditions, depending on used binder; the binder is Portland cement, molasses, lime, lime milk, magnesium cement, bentonite, or their combinations, or it is compacted into the compact form by pressing under high pressure so that the interrelationship of the particles occurs by Van der Waals forces, and the over-sieve slag of 12-50 mm fraction is used in original condition without previous treatment. |
