由氢氧化铬渣制取工业氧化铬产品的工艺
发布时间：2019-01-09 10:50
【摘要】：针对氢氧化铬渣进行了无害化处理研究,考察了Na OH质量浓度、液固质量比、浸出温度、搅拌速率、浸出时间等条件对铬渣中Al的脱除率的影响.实验结果显示,在温度为100℃、Na OH质量浓度为150 g/L、液固质量比为7∶1、搅拌速率为400 r/min、浸出时间为3.5 h的条件下,铬渣中Al的浸出率可以达到92.69%.碱浸渣水洗脱碱后,在950℃条件下煅烧90 min,最终得到的产品中氧化铬的含量可达到97.23%,经过CIE L*a*b*表色体系测定,由铬渣制取的氧化铬产品偏绿,适用于工业用途.
[Abstract]:The effects of Na OH concentration, liquid-solid mass ratio, leaching temperature, stirring rate and leaching time on the removal rate of Al from chromium hydroxide slag were studied. The experimental results show that the leaching rate of Al in chromium residue can reach 92.69 when the mass concentration of, Na OH is 150 g / L at 100 鈩，
本文编号：2405524
[Abstract]:The effects of Na OH concentration, liquid-solid mass ratio, leaching temperature, stirring rate and leaching time on the removal rate of Al from chromium hydroxide slag were studied. The experimental results show that the leaching rate of Al in chromium residue can reach 92.69 when the mass concentration of, Na OH is 150 g / L at 100 鈩，
本文编号：2405524
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