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首页> 外文会议>International congress on the science and technology of ironmaking;ICSTI'09 >Study on Influence of K2O and Na2O on Mineral Composition and Microstructure of Sinter of Baotou Iron and Steel (Group) Co
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Study on Influence of K2O and Na2O on Mineral Composition and Microstructure of Sinter of Baotou Iron and Steel (Group) Co

机译：K2O和Na2O对包钢（集团）公司烧结矿矿物成分和组织的影响

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摘要

The influence of K2O and Na2O on mineral composition and microstructure of high basicity sinter produced by adding K2CO3 and Na2CO3 into Baiyunebo iron ore concentrate was studied using mini-sintering test device, optical microscopy (OM) and SEMEDAX. The results show that the content of K2O and Na2O in sinter has a significant effect on glassy phase composition, but has little effect on glassy phase quantity. As the content of K2O and Na2O in sinter increased from 0.25% to 1.00%, K2O and Na2O highly enriched in glassy phases, the main crystal phase hematite and its crystal stock growth degree increased, magnetite decreased and distributed homogeneously between hematite crystal stocks, a small quantity of glassy phase also distributed between hematite crystal stocks, calcium ferrite, cuspidine and dicalcium silicate were seldom observed, the phase constituents of sinter reduced, microstructure became homogeneous, pores became small and distributed homogeneously, the multi-cavities and thin framework microstructure appeared.
机译：利用微型烧结试验装置，光学显微镜（OM）和SEMEDAX，研究了K2O和Na2O对在白云鄂博铁精矿中添加K2CO3和Na2CO3的高碱度烧结矿矿物成分和微观结构的影响。结果表明，烧结矿中K2O和Na2O的含量对玻璃相组成有显着影响，而对玻璃相量的影响很小。随着烧结矿中K2O和Na2O含量从0.25％增加到1.00％，K2O和Na2O富含玻璃态，主晶相赤铁矿及其晶种生长程度增加，磁铁矿减少，并且在赤铁矿晶种之间均匀分布。赤铁矿晶体原料之间也分布有少量玻璃态相，很少观察到铁素体钙，cuspidine和硅酸二钙，烧结矿的相成分减少，微观结构变得均匀，孔隙变小并均匀分布，出现了多腔和薄框架的微观结构。

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