【摘要】：通過正交實驗分析焙燒溫度、碳氧物質(zhì)的量比、水分質(zhì)量分數(shù)、堿度和CO_2體積分數(shù)5個關鍵因素對含鋅粉塵的脫鋅過程的影響,利用熱力學軟件Factsage計算分析實驗溫度范圍內(nèi)鋅、鐵的還原優(yōu)勢,并且通過掃描電鏡(SEM)和X線衍射分析(XRD)Zn和Fe元素在焙燒過程中的還原行為。研究結果表明:溫度是影響脫鋅率最主要的因素,脫鋅率隨著溫度的升高而顯著增加。達到1 200℃時Zn單質(zhì)幾乎能和Fe單質(zhì)同時被還原出來。脫鋅的最佳工藝參數(shù)如下:溫度為1 200℃,碳氧物質(zhì)的量為1.0,水分質(zhì)量分數(shù)為10%,堿度為2.0,CO_2體積分數(shù)為65%,在此最佳工藝條件下團塊脫鋅率達到82.66%。
[Abstract]:The effects of calcination temperature, mass ratio of carbon to oxygen, water mass fraction, basicity and CO_2 volume fraction on the dezincification process of zinc-containing dust were analyzed by orthogonal experiment. The reduction advantages of zinc and iron in the range of experimental temperature were calculated and analyzed by thermodynamics software Factsage. The reduction behavior of (XRD) Zn and Fe elements during roasting was analyzed by scanning electron microscope (SEM) and X-ray diffraction (XRD). The results show that temperature is the most important factor affecting the dezincification rate, and the dezincification rate increases significantly with the increase of temperature. At 1 200 鈩，

本文編號：2407132