锰硅铁合金冶炼电弧炉中焦炭层电流分配行为的模拟  

Simulation of Current Distribution in Manganese-Silicon Ferroalloy Smelting Arc Furnace with Coke Layer

作　　者：翟丹[1] 储少军[1] 李忠思[1] 贺瑞飞[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《过程工程学报》2008年第3期449-452,共4页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金资助项目(编号:50274013)

摘　　要：根据锰硅铁合金冶炼电弧炉内焦炭层熔池的结构特征及相似理论，设计了研究熔池导电行为的模拟实验装置．以电导率为10．08～17．97mS／cm的NaCl水溶液和冶金焦粒模拟实际锰硅铁合金冶炼电弧炉熔池内的导电相，研究了冶炼过程熔池内电流在焦炭层与熔渣之间的分配关系．结果表明，焦炭层厚度鼠、焦炭粒度Dc和导电相的电导率（固相PC，液相PL）与通过熔池底部电流（Ib）和总电流（It）之比Id/It的关系式为Ib/It=4．36（pL／PC）^1．523（Dc／Hc）^0.186，Ib/It随熔融层操作电阻的增大而变小，与锰硅铁合金实际生产状况一致．A simulation device for investigating the behavior of current distribution was designed according to the structure characteristic of coke layer molten pool in manganese-silicon ferroalloy smelting arc furnace and similarity theory. NaCl solution with the specific conductance of 10.08-17.97 mS/cm and coke were used as the electric conduction phase to simulate the behavior of electric conduction in manganese-silicon submerged arc furnace. The current distribution relationship of the total current between coke layer and molten slag layer was measured in the molten pool. The results indicated that the relationships among the depth of coke layer, Hc, the granularity of coke, Dc, the conductivities of electric conduction phases （both in solid and liquid phases, PC and RL）, the ratio of current through the bottom of molten pool Ib to total current It followed the following equation, i.e., Ib/It=4.36（PL/PC）^1.523（Dc/Hc）^0186. When operational resistance of melting layer increased, Ib/It would decrease, which was in accordance with the actual process of manganese-silicon ferroalloy production.

关 键 词：锰硅铁合金 电弧炉 焦炭层 电流分配 熔融层操作电阻 模拟 

分 类 号：TF62[冶金工程—钢铁冶金]