Injection To Restore The Preliminary Study Of Mechanism Of Copper And Numerical Simulation Of Residue

Today, in order to strengthen the smelting process and control of environmental pollution, most copper smelting process used industrial oxygen-enriched air or oxygen, because the smelting system has high oxygen potential, leading to copper slag increase. At present, the copper mine which copper content is 0.4%-0.5% has been mining, but the output of copper slag's copper content still as high as 0.4%-0.8%, causing a waste in the exploitation resources. Today, with increasingly stringent environmental requirements and increasingly scarce in mineral resources, comprehensive recycling of copper slag gradually aroused people's concern.According to the depleted EAF in the actual situation of the A company, in view of the injector guns used by the depleted EAF, which has serious problem of carbon deposition and low-rate reduction. In this paper, we do calculation and simulation experiments. Through thermodynamics, find that the reduction mechanism of G used by the injector guns and the cause of carbon deposition. Through the optimization of the gun-type used by the injector guns in the depleted EAF, the reduction process to change the conditions of the bubble dynamics in the reduction process, which is help to the separation and settlement of copper and matte, in order to increase the rate reduction and lower the content of copper in the slag. Use research methods of hydraulics physical simulation and numerical simulation, optimize programme of the gun-type of the injector guns used by depleted EAF and gun-bubble flow field. According to similarity theory and the symmetry of prototype, the choice of Froude similarity principle and several similar experiments with the prototype model of the geometric ratio of 1:10 similar conditions, the establishment of local experimental model and hydraulic simulation experiments. The experiment model was used to observe the bubble and flow recycling which caused by the 7 different gun-type. Meanwhile, based on continuous equation, momentum transfer equation and energy transmission equation, the mathematical model was described injector gun injection process, the fluid flow phenomena in the depleted EAF while the injector gun was injecting. The FLUENT commercial software was used to calculated.The thermodynamic calculations show that reducing diesel injected into the gun has been reached the carbonation temperature from the muzzle 0.83m. Through hydraulic model experiments and numerical simulation, found that the gun-type has an important influence on the fluid flow in depleted EAF. In hydraulic modeling experiments, the # 5 gun-type's conditions can better meet the requirements of the bubble dynamics in the 7 different gun-type. The experiment results will be useful to improve the efficiency of poverty reduction of the depleted EAF and lower the content of copper in slag. It will also provide the prerequisite to further analysis of fluid flow in mathematical model of depleted EAF, and lay a solid theoretical foundation for intensifying smelting and optimizing technical process of the depleted EAF operation in the A company.