【摘要】：針對氫氧化鉻渣進行了無害化處理研究,考察了Na OH質(zhì)量濃度、液固質(zhì)量比、浸出溫度、攪拌速率、浸出時間等條件對鉻渣中Al的脫除率的影響.實驗結(jié)果顯示,在溫度為100℃、Na OH質(zhì)量濃度為150 g/L、液固質(zhì)量比為7∶1、攪拌速率為400 r/min、浸出時間為3.5 h的條件下,鉻渣中Al的浸出率可以達到92.69%.堿浸渣水洗脫堿后,在950℃條件下煅燒90 min,最終得到的產(chǎn)品中氧化鉻的含量可達到97.23%,經(jīng)過CIE L*a*b*表色體系測定,由鉻渣制取的氧化鉻產(chǎn)品偏綠,適用于工業(yè)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，

本文編號：2405524