Effect of w(MgO) on metallurgical properties of flux pellets
PAN Xiangyang1,2,LONG Yue1,2，LI Shenzi1,2，MA Baoliang3，DU Peipei1,2，ZHANG Yuzhu1,2
(1. School of Metallurgy and Energy， North China University of Science and Technology， Tangshan 063210，
Hebei， China;2. Modern Metallurgical Technique Key Laboratory of Ministry of Education，
North China University of Science and Technology， Tangshan 063210， Hebei， China;
3. Xingtai Iron and Steel Co., Ltd.， Xingtai 054027， Hebei， China)
Abstract： In order to study the influence of w(MgO) on metallurgical performances of flux pellets was investigated by adding the high magnesium power. Pellet samples with varying w(MgO) (1.6%2.4%) were studied for their compressive strength, RDI(reduction degradation index), RI(reducibility index), RSI(reduction swelling index). The optical microscope and the Xray diffraction were employed to identify the microstructure and the mineral composition of fired pellets. With the increasing of w(MgO), the compressive strength increased firstly and then decreased. When w(MgO) was 2.0%, the compressive strength reached the maximum value, 3 533 N. As w(MgO) increasing from 1.6% to 2.4%, the RDI、RI and RSI of the pellet were improved. When w(MgO) is in the range of 1.8% to 2.0%, the micromorphology and the mineral composition of the pellets are good. The hematite is well crystallized so that the strength of the pellets is good. When the highmagnesium powder and the Yanshan concentration were used to make the ball, w(MgO) in pellets should be controlled in the range of 1.8% to 2.0 % in order to obtain a lower reduction expansion index and better metallurgical properties.
潘向阳，龙跃，李神子，马保良，杜培培，张玉柱. w(MgO)对熔剂性球团矿冶金性能的影响[J]. 钢铁, 2019, 54(10): 17-22.
PAN Xiangyang1,2,LONG Yue1,2，LI Shenzi1,2，MA Baoliang3，DU Peipei1,2，ZHANG Yuzhu1,2. Effect of w(MgO) on metallurgical properties of flux pellets. Iron and Steel, 2019, 54(10): 17-22.
