(1. 中南大學(xué) 冶金與環(huán)境學(xué)院，長沙 410083；
2. 中南大學(xué) 能源科學(xué)與工程學(xué)院，長沙 410083)
摘 要: 伴隨著銅閃速爐產(chǎn)能與熔煉強度的不斷提高，閃速爐反應(yīng)塔內(nèi)溫度場、濃度場等物理場的微觀信息分布特點發(fā)生了明顯的變化，其反應(yīng)配風(fēng)之間的參數(shù)配比關(guān)系對爐內(nèi)熔煉過程的影響作用更為突出。采用正交設(shè)計的方法，就閃速爐生產(chǎn)操作的3個主要配風(fēng)參數(shù)(工藝風(fēng)、分散風(fēng)、中央氧)對爐內(nèi)氣、粒混合反應(yīng)過程的影響關(guān)系進行系統(tǒng)仿真研究，得到基準(zhǔn)工況條件下的操作參數(shù)優(yōu)化配比方案。仿真結(jié)果表明：分散風(fēng)速度對氣、粒混合反應(yīng)過程的影響占主導(dǎo)地位；在優(yōu)化工況條件下，爐內(nèi)熔煉過程效率進一步提高，其煙塵發(fā)生率可控制在3.2%左右，爐內(nèi)氧氣基本消耗完全。
關(guān)鍵字: 閃速熔煉；數(shù)值仿真；正交試驗；參數(shù)優(yōu)化
（1. School of Metallurgy and Environment, Central South University, Changsha 410083, China;
2. School of Energy Science and Engineering, Central South University, Changsha 410083, China）
Abstract:With an continuous increasing in the productivity and smelting intensity of the copper flash smelting furnace, distributions of physical fields, such as the temperature field and concentration field in the reaction shaft change significantly, and the matching scheme of operational parameters for different air flows becomes more and more important. Based on the orthogonal design method, the simulation study was carried out to investigate the effects of operational parameters of the main three air flows (i.e. the process air, the distribution air and the central oxygen) on the mixing and reaction process in the reaction shaft. The simulation results show that the distribution air velocity has more significant effect on the mixing and reaction process compared to the other two air flows. The smelting efficiency of the optimal case is further improved, of which the dust generation rate can be controlled around 3.2%, and the residual oxygen in the flue is nearly zero.
Key words: flash smelting; numerical simulation; orthogonal experiment; parameter optimization
