A5055552458- Iron and Steelmaking Processes
- Metallurgical Processes and Thermodynamics
- Metal Extraction and Bioleaching
- Mineral Processing and Grinding
- Minerals Flotation and Separation Techniques
- Complex Systems and Time Series Analysis
- Catalytic Processes in Materials Science
- Thermochemical Biomass Conversion Processes
- Coal Combustion and Slurry Processing
- Industrial Gas Emission Control
- Coal Properties and Utilization
- Granular flow and fluidized beds
- Field-Flow Fractionation Techniques
- Fluid Dynamics Simulations and Interactions
- Aluminum Alloys Composites Properties
- Additive Manufacturing and 3D Printing Technologies
- Microwave-Assisted Synthesis and Applications
- Theoretical and Computational Physics
- Chemical Looping and Thermochemical Processes
- Bauxite Residue and Utilization
- Toxic Organic Pollutants Impact
- Magnetic Properties and Synthesis of Ferrites
- Environmental remediation with nanomaterials
- Catalysis and Oxidation Reactions
- Radiative Heat Transfer Studies
Anhui University of Technology
2013-2024
Northeastern University
2011-2012
COREX is a clean process releasing lower pollution and consuming fewer cokes than the blast furnace process. However, serious sticking phenomenon often occurs in shaft furnace, causing many problems to normal operation. In this study, loading reduction experiments of iron ore pellets were carried out under simulating reducing conditions. The influence temperature H2 content syngas on behaviour was observed by scanning electron microscope, energy-dispersive spectrometer X-ray diffraction....
Iron ore oxidised pellets as the burden of blast furnace present many advantages, such uniform size, high iron grade and physical strength. A comparison with coal (out-proportioning) by conventional heating microwave was carried out in this paper. Microstructure transformations during reduction process were investigated optical microscopy scanning electron microscope energy dispersive spectrometry analysis. Micro-hardness metallic phase formed tested digital micro-hardness tester. The...
The reduction and magnetic separation procedure of pyrite cinder in the presence a borax additive was performed for preparation reduced powder. effects dosage, temperature, time grinding fineness were investigated. results show that when briquettes with 5% pre-oxidized at 1050 °C 10 min, 80 (<0.44 mm) passing 81%, iron recovery 91.71% grade concentrate 92.98%. In addition, microstructures products analyzed by optical microscope, scanning electron microscope (SEM), mineralography, also...
Abstract Scrap melting in the steelmaking process has recently attracted considerable attention. This study developed a mathematical model to investigate effects of sizes, initial temperatures and carbon contents scrap, bath flow on its behaviors. The results showed that volume solidified shell interface could be decreased or eliminated by increasing temperature scrap. content also significantly influenced behavior. completion time from 253 80 s when increased 0.10% 0.30%. Importantly,...
Abstract Iron ore sintering is an important part during the ironmaking process, and a large amount of SO 2 also generated. Our previous research shows that it effective way to reduce content flue gas by adding urea special material zone position. In this paper, mechanism selective desulphurization iron was carried out. The results show 88.14 % rate obtained with addition 0.05 particles at 100 mm height from feed bottom. During when drying reached added position urea, amounts NH 3 were...
The raceway has been studied extensively both theoretically and experimentally. In this study, particle velocity contours have developed to define the boundary. boundary is coarse fragmentised, but all of previous studies are based on Euclidean geometry, which regard dimension as an integer. paper, fractal method calculating size, describes with extremely irregular or fragmented characteristics, data from a cold physical model raceway. results show that precise can be obtained by contours,...
The interaction reaction between the degradation of coke and reduction iron ore was experimentally investigated under two blast furnace (BF) atmospheres. one is full oxygen (FOBF) hydrogen-enriched operation. other traditional BF. results indicated that temperature has a great important impact on gasification solution loss coke. Moreover, with increasing ratio to coke, enhanced while index sinter tends be slightly decreased. In addition, atmosphere FOBF, no less than 91.3% at 1000°C for 180...
The carbothermic reduction of copper slag at the different binary basicity (CaO/SiO 2 ) was carried out for recovering iron by wet magnetic separation.Calcium carbonate is found to be capable improving recovery, as well increasing particle size metallic significantly.Experimental evidence showed that CaO reacted with SiO form calcium silicate and FeO liberated from 2FeO .SiO , decreased content Fe in slags, which improved recovery during separation.The final product, assaying 90.23%Fe total...
The effects of roasting product siderite as catalyst on combustion characteristics bituminous coal and anthracite are investigated. experiments carried at 800 °C with different holding time by microwave reactor, employed in a horizontal electric resistance furnace 900 analyzed thermogravimetry. results estimated based ignition temperature, index, burnout index heat release. It is indicated that the reactivity pulverized can be improved adding optimal addition content for 1.5% 0.5%,...
Abstract Pyrite cinder is a solid waste generated by the sulfuric acid industry and considered environmentally hazardous. It contains abundant iron, such as Fe 2 O 3 4 , nonferrous metals, zinc, lead copper. In order to try recycle this material source of units, preparation direct reduction iron (DRI) using pyrite was investigated coal-based grate rotary kiln process. This process includes chloridizing roasting. The results show that 97 % removed after Copper only detached in with removal...
Abstract The burden surface shape and distribution in the shaft directly affect gas distribution, heat transfer chemical reactions inside blast furnace. current study developed a three-dimensional model of bell-less top charging to investigate influence “central coke charging/sub-central charging” (CCC/SCCC) mode on shape, mass percentage ore-to-coke (O/C). results showed that height region between middle edge is low by applying CCC mode, while there heap valley center when SCCC was adopted....