(1. 中南大學(xué) 物熱系熱工設(shè)備仿真與優(yōu)化研究所， 長沙 410083；
2.貴溪冶煉廠， 貴溪 335424)
摘 要: 采用傳熱數(shù)值計算的方法對閃速爐反應(yīng)塔塔壁進行了模擬，獲得了反應(yīng)塔壁面溫度分布及其內(nèi)壁掛渣層厚度的仿真計算結(jié)果，首次實現(xiàn)了反應(yīng)塔爐膛內(nèi)形的在線顯示。用于工業(yè)生產(chǎn)后，經(jīng)現(xiàn)場檢驗，軟件仿真計算結(jié)果與實際數(shù)值接近，其中爐膛溫度相差不足40 ℃，掛渣層厚度平均誤差<3%，可完全滿足生產(chǎn)要求。 該軟件的研制為實踐中實現(xiàn)反應(yīng)塔爐膛內(nèi)形實時監(jiān)控創(chuàng)造了條件，并成為閃速爐生產(chǎn)操作優(yōu)化的理論依據(jù)。同時通過仿真研究發(fā)現(xiàn)，冷卻水套對反應(yīng)塔爐膛內(nèi)形影響顯著，加強冷卻系統(tǒng)的強度將有利于保護爐襯，延長爐體壽命。
關(guān)鍵字: 閃速爐； 爐膛內(nèi)形； 數(shù)值仿真
of reaction shaft in flash smelting furnace
ZHANG Wei-hua2, WU Jun2
（1. Institute of Simulation and Optimization of Pyro-installation,
Central South University, Changsha 410083, P.R.China;
2. Guixi Smelter, Guixi 335424, P.R.China）
Abstract: Based on the principal of heat transfer, a mathematical model of the wall of reaction shaft in a flash smelting furnace was developed, and the simulation results of the distribution of temperature field and the slag thickness of the wall in the shaft were obtained. It is the first time to realize the on-line display of the freeze profile of reaction shaft. Compared with the practical data, the computational results are satisfactory. The error of the hearth temperature is less than 40 ℃, and the average error of the slag thickness is less than 3%. The software provides not only a way to monitor the reaction shaft in practice, but also a theoretical base for optimization of flash smelting furnace. At the same time, great influences of the cooling jackets on the temperature of the hearth are also found. It is concluded that a strengthened cooling system will effectively prolong the life of the refractory.
Key words: flash smelting furnace； freeze profile； numerical simulation
