Effect of Gas Quenching Behavior of Modified Steel Slag on Digestion of f-CaO
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摘要: 以钢渣为研究对象，选取不同掺量（0%、15%、25%、35%）的高炉渣对其调质重构并进行高温气淬，研究气淬行为和重构渣对消解f-CaO的影响。结果表明：气淬行为利于消解钢渣中f-CaO，并且气淬完全的钢渣粒度越小，消解效率越好；经过XRD和矿相分析，发现钢渣经过气淬之后，矿相成分为玻璃质物相，以及RO相、硅酸二钙、方镁石等。Abstract: In this paper blast furnace slag with different content(0%,15%,25%,35%) was selected to carry out quenching and tempering reconstruction on steel slag,and then high-temperature gas quenching had been performed.Influence of gas quenching behavior on the elimination of f-CaO by reconstructed slag had been investigated.The results show that gas quenching is beneficial to the digestion of f-CaO in steel slag.The smaller particle size of steel slag can achieve better the digestion efficiency.XRD and mineral phase analysis show that after gas quenching the mineral phase composition of steel slag is composed of glass phase,RO phase,dicalcium silicate,periclase and so on.
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Key words:
- steel slag /
- BFslag /
- modified /
- gas quenching /
- digestion of f-CaO /
- particle size
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