研究了转炉尘泥和精矿含碳球团在氧化性气氛下还原、冷却和贮存过程中的再氧化问题，提出了有效防止再氧化的措施．高温（大于１２００℃）、快速（１０～２０ｍｉｎ）还原得到的金属化率大于９０％的金属化球团，采用炉内冷却、埋煤粉中、放密封罐内、炉内冷至９００～１０００℃后出炉冷却四种方式都是有效的，干燥清洁的室内堆存是简单有效贮存海绵铁的方法． The problems of re-oxidation during reduction, cooling and storage of converter dust and concentrate-containing carbon pellets in oxidizing atmosphere were studied, and measures to prevent reoxidation were proposed. Metallized pellets with a metallization ratio greater than 90% obtained by high temperature (more than 1200 ℃) and rapid (10 ~ 20min) reduction are cooled in a furnace, buried in pulverized coal, placed in sealed cans and cooled to 900-1000 in the furnace ℃ after cooling baked four ways are effective, dry and clean indoor storage is a simple and effective method of storing sponge iron.