CAJ | 학술논문

为使还原条件与实际电弧炉生产相接近，在等温条件下对电弧炉粉尘球团的还原过程动力学进行了研究。电弧炉粉尘与还原剂碳和粘接剂石灰均匀混合后制粒，经干燥后将球团置于恒定温度的加热炉中，利用电子称定时对球团重量进行检测。金属还原率的计算中，考虑了球团的失重、铅和锌在高温下挥发。经研究，电弧炉粉尘的还原分为二个阶段，还原初期由化学反应控制而还原后期由扩散控制，并建立了每一阶段的还原动力学方程，确定了有关的动力学参数表观活化能和频率因子。
위사환원조건여실제전호로생산상접근，재등온조건하대전호로분진구단적환원과정동역학진행료연구。전호로분진여환원제탄화점접제석회균균혼합후제립，경간조후장구단치우항정온도적가열로중，이용전자칭정시대구단중량진행검측。금속환원솔적계산중，고필료구단적실중、연화자재고온하휘발。경연구，전호로분진적환원분위이개계단，환원초기유화학반응공제이환원후기유확산공제，병건립료매일계단적환원동역학방정，학정료유관적동역학삼수표관활화능화빈솔인자。
The electric arc furnace (EAF) dust pellets were reduced in isothermal condition in order to make the reduction similar to the EAF production， and the kinetics of the reduction process is researched. The pellets were made with carbon as the reducing agent and dolomite as the binder. The electric furnace was used to heat the pellets, and the electrical balance was used to check the weight change of the pellets in the reduction process. The reduction degree was calculated according to the weight change of the pellets in the consideration of evaporation of moisture and the evolution of zinc and lead in high temperature. The results of the experiments show that the process is in two different steps. The reduction kinetics models are set up for each step, and the kinetics parameters such as activation energy and frequency factor are determined. The first step is controlled by chemical reaction and the second step is controlled by the diffusion.