CaO-MgO-FeO-Al_2O_3-SiO_2-P_2O_5熔融还原渣熔化温度的研究  

STUDY ON MELTING TEMPERATURE OF CaO-MgO-FeO-Al_2O_3-SiO_2-P_2O_5 SMELTING REDUCTION SLAG

作　　者：熊洪进[1] 施哲[1] 丁跃华[1] 阴树标[1] 漆鑫[1] 杨晓源[1] 

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093

出　　处：《矿冶》2013年第3期84-90,共7页Mining And Metallurgy

基　　金：云南省教育厅科学研究基金项目(ZD2010001)

摘　　要：采用IST-1600PC熔点熔速测试仪，对CaO—MgO—FeO—Al2O3-SiO2-P205熔渣的熔化温度进行了测试。根据熔融还原冶炼惠民高磷铁矿的试验特点和工艺条件，选择的熔渣成分组合为：二元碱度0．8～1．4，A120，含量6．4％-12．4％，P20，含量0％～3％、分别固定MgO、FeO含量为4％、12％。研究表明，当P2O5或Al2O3含量一定时，碱度对熔化温度的影响趋于一致，熔渣的熔化温度随着熔渣碱度的增大先降低后升高，在碱度R为1．0时最低，而且最低点的温度与P2O5或Al2O3含量成正比，P2O5或Al2O3含量越高，最低点处的温度越高；当碱度或P2O5含量一定时，熔化温度会在Al2O3含量为9．4％时出现拐点；当碱度或Al2O3含量一定时，熔化温度均随着P2O5含量的增加而提高。The melting temperatures of smelting reduction slag having the compositions of CaO-MgO-FeO- Al2O3-SiO2-P2O5 with basicity（mass ratio of CaO to Al2O3 ）ranging from 0. 8 to 1.4, Al2O3 ranging from 6.4% to 12.4, P205 ranging 0% to 3% and the content of MgO, FeO fixed as 4% , 12% respectively, which represent the characteristic process conditions of Huimin high-phosphorus iron smelted by smelting reduction, were measured using IST-1600PC Melting Temperature Measuring Apparatus. The test results showed that the effect of slag basicity on melting temperature tended to be consistent, the melting temperature firstly decreased and then increased with increasing slag basicity at a fixed P2O5 or Al2O3 content, and the minimum values were reached which was proportional to the content of P2O5 or Al2O3 as slag basicity was 1.0 ; the melting temperature values appeared to have an inflection point at a fixed slag basicity or P2O5 content; the melting temperature increased with increasing P2O5 content at a fixed slag basicity or Al2O3.

关 键 词：熔融还原 熔渣 熔化温度 

分 类 号：TF557[冶金工程—钢铁冶金]