铁水脱硫搅拌器结构分析及改进

Structure analysis and improvement of hot metal desulphurization stirrer

对某钢厂现用脱硫搅拌器进行现场工况条件下的仿真分析，并针对最大应力位置进行优化设计。结果表明，改用电熔莫来石作为耐火材料，可使最大应力减小约38MPa，最大变形减小约10mm；增大叶片迎叶面由下而上的倾角5°～10°，可使最大应力减小约50MPa，最大变形减小约13mm；综合改进搅拌器的材料及结构，可使最大应力减小约59MPa，最大变形减小约16mm。

Simulated analysis of the desulphurization stirrer under the present condition, and optimized design of the maximum stress position,the results show that switching electric cast mullite brick as refractory materials, the maximum stress is reduced by about 38MPa,besides, the deformation decreases about 10mm;increasing the blade inclination 5°～10° from the bottom to the up of stirrer,the maximum stress is reduced by about 50MPa, and maximum deformation decreases about 13mm;with the comprehensive improvement of the material and the structure of stirrer,the maximum stress is reduced by about 59MPa, and maximum deformation decreases about 16mm.