高铁高砂煤矸石合成4A沸石分子筛

Synthesis of 4A Zeolites Molecular Sieve from Coal Gangue with High Contents of Iron and Silica

以六盘水矿区的高铁高砂煤矸石为原料合成4A沸石分子筛,将煤矸石低温焙烧、盐酸酸浸除铁、高温焙烧后再碱融活化获得了活性原料,最后采用水热晶化的方法,合成了4A沸石分子筛产品。本研究采用单因素实验的方法,考察了合成条件对4A沸石分子筛性能的影响,并运用XRD和SEM对产品进行了表征,结果表明所得产品为4A沸石分子筛,粒度分布均匀,晶形完好。

The coal gangue with high iron and silica of Liupanshui was used as raw material to synthesize 4A zeolites molecular sieve.At first,the raw ore was leached by hydrochloric acid after low temperature baking,then the active material was obtained by high temperature baking and alkali-dissolving method,finally the 4A zeolites were produced by hydrothermal method.The effects of synthesis conditions on properties of 4A zeolites molecular sieve were analyzed by single factor experiment,and the products were characterized by XRD and SEM.The results indicated that the products were 4A zeolites molecular sieve with uniform size distribution and complete crystal form.