热处理温度对煤矸石结构及吸附Cr^(6+)性能的影响

Effects of Thermal Treatment Temperature on Coal Gangue Structure and Cr^(6+) Adsorbability

就热处理温度对鹤壁煤矸石的结构及吸附Cr6+性能的影响进行了初步研究,并以安阳膨润土作对比。结果表明,在不同温度下处理的煤矸石,其结构发生了较大的变化,由结晶较好、有序度高的高岭石转变为无定型且具有一定活性的SiO2和Al2O3,吸附性能优于膨润土,500℃焙烧煤矸石的吸附能力最佳。

Pilot study on effect of thermal treatment temperature on coal gangue structure and Cr^(6+) adsorption capability was performed. The results suggested that there was a great change in the structure of coal gangue processed under different temperatures,from kaolinite with good crystal and high sequence to the noncrystaline which contained some active silicon dioxide and aluminium trioxid.The adsoportion capability was prior to bentonite,and was the best when the coal gangue was processed at 500℃.