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对天然沸石开展机械研磨。为制备沸石粉体，采用行星式球磨机对天然沸石进行研磨，并在可控条件下制备了x份天然沸石研磨样品。干磨工艺中，研磨转速设定于ω₁~ω₂区间可调，研磨时长按实验需求调整。为避免样品污染，所有测试样品均在包覆氧化锆护套的钢质研磨罐中制备。研磨罐偏心布置于行星式球磨机的太阳轮之上。对制备得到的粉体开展了成分、形貌、粒径及粒径分布的表征分析。为此，采用扫描电子显微镜（Scanning Electron Microscopy, SEM）对沸石纳米颗粒的表面形貌与成分进行表征；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）分析样品的形貌、物相及晶体结构。 将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。