Optimized use of MgO flux in the agglomeration of high-chromium vanadium–titanium magnetite

作     者：Jue Tang Man-sheng Chu Xiang-xin Xue 

作者机构：School of Material and Metallurgy Northeastern University 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2015年第22卷第4期

页      面：371-380页

核心收录：

学科分类：080602[工学-钢铁冶金] 0709[理学-地质学] 0819[工学-矿业工程] 0806[工学-冶金工程] 08[工学] 0708[理学-地球物理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080601[工学-冶金物理化学] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：financially supported by the National Natural Science Foundation of China (Major Program, No. 51090384) the National High Technology Research and Development Program of China (Nos. 2012AA062302 and 2012AA062304) the Fundamental Research Funds for Central Universities (Nos. N110202001 and N130602003) the Northeastern University Cultivation Project of Excellent Doctoral Dissertation 

主　　题：magnetite ore pellets magnesia agglomeration burden sintering 

摘      要：The optimized use of MgO flux in the agglomeration of high-chromium vanadium-titanium magnetite was investigated system- atically through sinter and pellet experiments. MgO was added in the form of magnesite. When the content of MgO in the sinter was in- creased from 1.95wt% to 2.63wt%, the low-temperature reduction degradation index increased from 80.57% to 82.71%. When the content of MgO in the pellet was increased from 1.14wt% to 2.40wt%, the reduction swelling index decreased from 15.2% to 8.6%; however, the com- pressive strength of the oxidized pellet decreased dramatically and it was 1985 N with an MgO content of 1.14wt%. This compressive strength does not satisfy the requirements for blast-furnace production. When all of the aforementioned results were taken into account, the sinter with a high MgO content （2.63wt%） matching the pellet with a low MgO content （less than 1.14wt%） was the rational burden structure for smelting high-chromium vanadium-titanium magnetite in blast furnaces.