Li Shenzi, Long Yue, Pan Xiangyang, Du Peipei, Ma Baoliang. Effect of MgO Content on Metallurgical Properties of Acid Pellets[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(1): 113-118. doi: 10.7513/j.issn.1004-7638.2020.01.020
Citation:
Li Shenzi, Long Yue, Pan Xiangyang, Du Peipei, Ma Baoliang. Effect of MgO Content on Metallurgical Properties of Acid Pellets[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(1): 113-118. doi: 10.7513/j.issn.1004-7638.2020.01.020
Li Shenzi, Long Yue, Pan Xiangyang, Du Peipei, Ma Baoliang. Effect of MgO Content on Metallurgical Properties of Acid Pellets[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(1): 113-118. doi: 10.7513/j.issn.1004-7638.2020.01.020
Citation:
Li Shenzi, Long Yue, Pan Xiangyang, Du Peipei, Ma Baoliang. Effect of MgO Content on Metallurgical Properties of Acid Pellets[J]. IRON STEEL VANADIUM TITANIUM, 2020, 41(1): 113-118. doi: 10.7513/j.issn.1004-7638.2020.01.020
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. School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China;
4. Xingtai iron and Steel Co., Ltd., Xingtai 054027, Hebei, China
Appropriate MgO content in pellets can improve their metallurgical properties and is beneficial to blast furnace smelting.Therefore,it is very important to determine suitable MgO content in pellets.In this experiment,Yanshan No.3 type of iron concentrate powder,dolomite powder and high magnesium powder were mixed to make pellets.The influence of MgO content on the metallurgical properties of acidic pellets was investigated by means of comprehensive tester for metallurgical properties of iron ore,XRD and metallographic microscope.The results show that with the increase of MgO content,the low temperature reduction pulverization and reducibility of acid pellets are improved.The best compressive strength of acid pellets can be achieved when MgO content is 2.0%,reaching 3 050 N.When MgO content is in the range of 1.8%～2.0%,the better mineral composition of pellets is obtained with morecalcium ferrite content and better crystallization of hematite.
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