1Low Grade Smelting Practice of Laiwu Steel’s 3 200 m3 BFTANG Dengjun, WANG Yan, ZHANG Hui, GUO Xinchao1-3,92Practice of Processing BF Wall Accretion by Lowering Charge Level in Shiheng Special Steel’s No.1 1 050 m3 BFQIAN Yong, YANG Yun, CHEN Dejian4-73Commercial Technical Development of Duplex Process for Smelting Iron Base Amorphous Alloys Parent MetalFU Qinglin, YIN Weiping8-94Development and Application of Controlled Cooling Process after Normalizing for Heavy Plate in Laiwu SteelGAO Lifu10-11,145Development of High Precision 45 Steel Free from Heat TreatmentJIANG Zilong, DONG Guiqiang12-146Optimization of the Heat Treatment Process for 50CrVA Steel with Orthogonal ExperimentLIU Yong15-16,197Technological Transformation Practice of 105 m2 Sintering MachineBAI Wei17-198Electroslag Technology for 3YC7 Alloy Remelting ProductionLI Daoqian, LIU Yuting, MA Zhonggang, JIA Chengjian, LI Huakun20-22,289Application of Constant Pressure Variable Frequency Speed Regulation Model in Dust Removal for Casthous in MeigangPENG Zhiping23-25,2810Application of Long Lining Life Technology on 120 t Combined Blown Converter with Movable Furnace Bottom in Laiwu SteelFENG Nian, YANG Dongli, ZHANG Huade26-2811Research on the Process of Phased Grinding-magnetic Separation for an Iron Ore with PyriteWANG Zhongjie29-3112Study on Application of 6σAnalysis Method in the Silicon Content in Hot MetalYU He, YANG Xin32-3413Experimental Study on Converter Slag’s Melting TemperatureSONG Jiaqiang, YIN Jifeng35-3814Research Progress of Brittle Fracture of High Carbon Steel Wire RodLI Bingliang, XIE Hongwei39-4115Study on the Welding Performance of SA738Gr.B Steel for the Safety Shell of Nuclear Power StationJIANG Shanyu42-44,4816Influence of Tempering on Microstructure and Properties of Low Carbon Bainite SteelHUANG Shaowen45-4817United Fast Analysis of the Silicon, Phosphorus, Aluminum and Manganese in Silicon Manganese Aluminium Iron AlloyZHANG Han, LI Lingyun, MA Fang49-5118Fuzzy Reliability Optimization for the Helical Gear Transmission Based on Particle Swarm OptimizationWANG Yongli52-5419Development and Application of Monitoring System of BF Hearth ErosionLI Fangkun55-5620Design and Application of Coke Oven Stamp-charging Coking Control SystemSUN Xiujuan57-58 