(1. 中南大學(xué) 能源科學(xué)與工程學(xué)院，長沙 410083；
2. 安陽市岷山有色金屬有限責(zé)任公司，安陽 455000)
摘 要: 基于Fluent軟件，耦合Realizable k-ε湍流模型和VOF多相流模型對液態(tài)高鉛渣還原爐內(nèi)氣液兩相流動過程進(jìn)行數(shù)值模擬。依據(jù)相似原理建立了水模型實驗，得到氣泡/氣團頻率、氣泡直徑和噴槍直徑比值的實驗結(jié)果，其結(jié)果和數(shù)值計算結(jié)果吻合較好，驗證數(shù)值計算模型的有效性。運用該耦合模型研究熔池深度、噴槍直徑、噴槍傾角和噴槍間距等因素對還原爐的影響。再通過正交實驗和矩陣分析方法，綜合考慮熔池氣含率、熔體平均流速和熔體湍動能等指標(biāo)，得到還原爐最優(yōu)工況為噴槍角度為10°，熔池深度為800 mm，噴槍直徑為60 mm，間距為950 mm。
關(guān)鍵字: 高鉛渣；熔池熔煉；氣液兩相流；數(shù)值模擬；矩陣分析法
（1. School of Energy Science and Engineering, Central South University, Changsha 410083, China;
2. Anyang Shi Minshan Nonferrous Metals Co., Ltd., Anyang 455000, China）
Abstract:Based on Fluent software, the gas-liquid two-phase flow in reduction furnace was simulated by Realizable k-ε Turbulent model coupling with VOF multiphase model. The experiments on the bubble frequency and the ratio of the bubble diameter and the lance diameter were carried out in a water model based on the similarity principle, and the results were compared with the numerical results and the feasibility of the model was verified. The influences of some parameters, such as the pool depth, the lance diameter, the lance inclination and the lance spacing, were studied on reduction furnace. Using the orthogonal experimental design and matrix analytic method and overall considering the gas holdup, mean velocity and turbulent kinetic energy of the melt optimum indexes, the optimal operation condition can be achieved with the lance inclination angle of 10°, the pool depth of 800 mm, the lance diameter of 60 mm and the lance spacing of 950 mm.
Key words: lead-rich slag; bath smelting; gas-liquid two phase flow; numerical simulation; matrix analytic method
