Optimization of milling parameters for natural zeolites to enhance adsorption of heavy metals

Natural zeolites were milled by optimizing the parameters. To produce zeolite powder, a planetary ball mill was used to mill natural zeolite. x samples of natural zeolite were milled under controlled conditions. The milling rotational speed will be varied between 1 - 2 and the milling time for dry milling. Test samples were prepared in a steel jar protected with jacket of zirconium oxide to avoid samples being contaminated. The grinding jars will be arranged eccentrically on the sun wheels of the planetary balls. The developed powder was characterized for composition, morphology, size, size distribution. So, Scanning Electron Microscopy (SEM) was used to study the surface morphology and composition of zeolite nanoparticles, X-ray Fluorescence (XRF) and X-ray powder Diffraction (XRD) will be used to determine the morphology, mineral phases and crystalline structure. The optimized parameters were used to produce zeolite samples which were used for adsorption purposes.本研究通过优化工艺参数开展天然沸石研磨实验：为制备沸石粉体，采用行星式球磨机对天然沸石实施研磨。取x份天然沸石样品在可控条件下进行研磨，干式研磨的转速范围设置为ω₁~ω₂，研磨时长可调节。为避免样品污染，所有测试样品均在包覆氧化锆护套的钢制研磨罐中制备，研磨罐偏心布置于行星式球磨机的太阳轮上。 对制备得到的粉体开展成分、形貌、粒径及粒径分布表征：采用扫描电子显微镜（Scanning Electron Microscopy, SEM）分析沸石纳米颗粒的表面形貌与成分；借助X射线荧光光谱（X-ray Fluorescence, XRF）与X射线粉末衍射（X-ray powder Diffraction, XRD）表征其形貌、物相组成与晶体结构。 将上述优化得到的工艺参数用于制备沸石样品，以供吸附实验使用。