钨尾矿制备矿物聚合材料影响因素研究

Study on influence factors of geopolymerin preparation with tungsten-tailing

以偏高岭石、钨尾矿为主要原料,水玻璃和NaOH组成的碱激发剂制备矿物聚合材料,测试了制品的抗折强度,讨论了几个主要因素对其性能及结构的影响。结果表明:当偏高岭石占固相含量为25%,水玻璃占液相的含量为65%,固液比为3.5～4.5,养护温度适当提高但不超过100℃时,所制备的矿物聚合材料性能最佳。

Geopolymer was synthesized with metakaolin and tungsten-tailing as the main raw material and alkali activator composed of sodium silicate solution and sodium hydroxide solution.Flexural strength of products was tested.The effect of several main composing factors on the geopolymers＇ properties and structure was investigated.The result shows that the properties of geopolymer are the best when the containing of metakaolin in the solid phase is 25%, the containing of water glass in the liquid phase is 65%, solid-to-liquid ratio is 3.5-4.5, and the curing temperature is improved appropriately but not exceeding 100℃.