China Nonferrous Metallurgy

Aiming at the stable control requirements of production and application based on micro heterogeneous purification technology of molten steel technology, the micro-explosive composite sphere is taken as the research object to carry out experimental and numerical simulation research. Based on the HJC model, the influence of kinetic energy and equivalent strain on the explosive reaction of composite sphere was studied, and the factors affecting the optimal state of the reaction, analysis of multi-point uniform detonation state of the composite sphere layer size and raw material ratios and other factors on the impact of the bursting reaction, to get the following conclusions: When the distribution of CaCO₃ powder is uniform in the process of powder preparation, the uniform initiation can achieve the best effect; The size of the kinetic energy generated when the burst is proportional to the dispersion distance of the mass, the same size and density of the composite sphere, multi-point homogeneous detonation of the kinetic energy is the largest, the dispersion effect is the best, the widest range of coverage; The smaller the thickness of the outer layer of the composite spheres, the better the reaction effect, and the middle layer thickness of 5mm is the furthest away from the reaction products; The ratio of CaCO₃ to CaO is 1∶10, the coverage is the most extensive.