混合填充体系对铬渣中六价铬的阻留作用

Fixation of Cr(VI) in Chromium Slag by Mixed Filler System

以铬渣和粉煤灰为混合填充体系的主要填料,采用柱子淋洗法,通过改变混合填料的配比来研究其对铬渣中Cr(VI)的阻留作用。试验结果表明,各种混合填充体系对Cr(VI)均有一定程度的阻留作用,其中Ⅰ-5柱对Cr(VI)的阻留固定效果最佳,淋出液中Cr(VI)的质量分数为0.060%,相对阻留效果达94.53%。

Leaching columns with chromium slag and fly ash as main fillers and different filler proportion were used to research the fixation of Cr(VI) in the slag.The results show that all columns with different filler proportion have a cartain performance of fixing Cr(VI),among which the columns 1-5 is the best with 0.060% of Cr(VI) mass percent in liechingout liquor and 94.53% of fixation rate.