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金属矿山 ›› 2008, Vol. 38 ›› Issue (06): 138-141.

• 综合利用 • 上一篇    下一篇

用略阳电厂粉煤灰合成沸石的试验研究

谭宏斌   

  1. 陕西理工学院
  • 收稿日期:2008-04-20 出版日期:2008-06-15 发布日期:2011-07-18
  • 基金资助:

    陕西理工学院科研启动基金项目(编号:SLGQD0502)。

Test on Synthesizing Zeolite with Fly Ash of Lueyang Power Plant

Tan Hongbin   

  1. Shanxi University of Technology
  • Received:2008-04-20 Online:2008-06-15 Published:2011-07-18

摘要: 以略阳电厂粉煤灰为原料,进行了用水热法和熔融水热法合成A型沸石和Y型沸石的试验研究。结果表明:粉煤灰在80 ℃和碱性条件下水热反应4 d,可获得含P型沸石和X型沸石的粉煤灰沸石;向粉煤灰中加入Al(OH)3和NaOH固体,以800 ℃熔融1 h后,在80 ℃下水热反应12 h,可获得A型沸石;向粉煤灰中加入硅灰石和NaOH固体,以800 ℃熔融1 h后,在80 ℃下水热反应36 h,可获得Y型沸石。将3种合成沸石与天然沸石和粉煤灰进行吸附溶液中Cd2+的对比,吸附能力由强到弱的排序为Y型沸石>A型沸石>粉煤灰沸石>天然沸石>粉煤灰。

关键词: 粉煤灰, 水热法, 熔融水热法, 沸石, Cd2+, 吸附

Abstract: Test was conducted on synthesizing zeolite A and zeolite Y by hydrothermal method and melting-hydrothermal method with the fly ash of Lueyang Power Plant. The results indicate that when fly ash is under the hydrothermal reaction and alkaline condition at 80 ℃ for 4 d, fly ash zeolite containing zeolite A and zeolite Y can be obtained. Zeolite A can be obtained by adding Al(OH)3 and NaOH solids into fly ash, melting at 800 ℃ for one hour and hydrothermal reaction at 80 ℃for 12 h; and Zeolite Y can be obtained by adding wollastonite and NaOH solids into the fly ash, melting at 800 ℃ for one hour and hydrothermal reaction at 80 ℃ for 36 h. The three kinds of synthesizing zeolite are compared with natural zeolite and fly ash in adsorbing Cd2+ in the solution, and the adsorption ability is sequenced from strong to weak as: zeolite Y >zeolite A >flyash zeolite >natural zeolite >fly ash.

Key words: Fly ash, Hydrothermal method, Melting hydrothermal method, Zeolite, Cd2+, Adsorption