摘要
在高温条件下合成和实际高炉渣与碳的还原过程中，ＳｉＯ２在２１２３Ｋ以上全部被碳还原，ＭｇＯ在２１７３Ｋ上可全部被还原，而Ａｌ２Ｏ３即使在２２７３Ｋ只被还原６３％，合成高炉渣在碱度不变时，增加ＭｇＯ含量，可使渣中还原ＳｉＯ２生成的ＳｉＣ增加和ＳｉＯ减少．随着温度升高和与碳混合均匀，实际高炉渣中氧化物的还原和反应后渣中Ａｌ２Ｏ３的含量都增加，而生成ＳｉＣ的量减少；渣中ＭｇＯ的含量明显降低，在较高的温度下渣中ＭｇＯ全部被还原．
The reduction of the synthetic and practice blast furnace slags with carbon at high temperature was carried out. Over 2123 K and 2173 K the SiO_2 and MgO can all be reduced respectively, but at 2 273 K the Al_2O3_ will be reduced only 63 %. In the increasing of MgO at constant basicity of the synthetic slag, SiC and SiO formed by reducing SiO_2 in the slag can be increased and decreased respectively at the relative high tempeyature and enough carbon. By increasing the temperature and well mixing the practice slag and carbon, the reduction of oxides in the slag and Al_2O_3 in the reduced slag will be increased, SiC and MgO in the reduced slag will be decreased. The MgO in the slag can all be reduced at relative high temperature.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2000年第1期12-15,共4页
Journal of University of Science and Technology Beijing
基金
国家自然科学基金!No.59974002
国家教委回国留学人员资助!No.95~135
关键词
高炉渣
合成渣
碳
还原
高温
炼铁
blast furnace slag
synthetic slag
reduction with carbon
high temperature
