Process Control Research, The Converter Side-blown Reduce Copper Converter Slag Magnetic Iron Oxide Content

Because of the blowing process itself and the temperature, often produce a number of Fe3O4 in the process of converter blowing.The Fe3O4 deteriorates the slag, prevents the progress of converter blowing from development. While the slag is excessive, deposition of the excessive Fe3O4 at bottom is easy to decreases the effective area of the converter. To ensure a good slag type, which promote converter blowing smoothly and eliminate blowing furnace end. In order to eliminate harmful Fe3O4, we plan to pour into an appropriate amount of SiO2 and spray into the suitable size coal particle to reduce F3O4. Because the density of Fe3O4 is intenser than the slag's, and more than the amount of Fe3O4 solubility, often bottom sediments. In order to ensure the reducing agent get access to Fe3O4, and ensure the reducing process develop smoothly. The converter blowing guns often tilt at an angle of 23.To reduce labor intensity and get a smooth converter restoration process, we calculate and design the converter tilt side-blown injection reducing agent system to degrade Fe3O4 through reduction of the injection process research.We can achieve an accurate measurement and automation of reducing agent injection control system.Tilt side-blown converter Fe3O4 reducing control system includes temperature control unit, fuel injection control unit, quartz material control and reducing agent injection control unit. This study includes the temperature measurement and control systems, fuel injection control systems and coal-based reductant injection automatic selection and designation control systems. According to the metallurgical reduction reaction principle, we studied the chemical properties and metallurgical performance requirements of coal-based reductant. We also studied the injected coal particle size, and side-blown model of the injection track and tilt angle.By analyzing, selection and calculation, we get some results as follows:(1) Temperature control system and fuel injection control system. (2) In order to ensure a better result of the reduction of Fe3O4 and prevention of coal dust explosion, chemical properties requirements of the reductant is more than 70% fixed carbon, volatile matter less than 20%, and less ash and less water. Metallurgical properties requires a strong reactivity of bituminous coal and anthracite, and thermal stability coal, particle size suitable for 2 to 5mm. (3) Converter tilt side-blown coal-based reductant degradation of Fe3O4 mathematical model and trajectory characteristics, as well as side-blown tilt angle. (4) Measurement and flow injection control of coal-based reductant. (5) Coal-based reductant injection system restore equipment unit selection and equipment unit of the parts calculation and design. (6) According to the coal dust explosion mechanism, we designed the monitor device and explosion proof equipment settings. (7) Coal-based reductant injection to restore Fe3O4 system layout and measuring devices and monitor placement, and designation of monitoring and explosion-proof equipment.