荧光灯管芯柱玻璃中金属铅的机械化学硫化

以硫化钠为硫化剂，机械化学硫化荧光灯管芯柱玻璃中金属铅，实现金属铅向硫化铅快速转化.通过单因素实验，考察了不同机械化学硫化条件，即球磨时间、球磨转速和球料比对硫化率的影响，并通过XRD、SEM和粒度对硫化产物进行表征.结果表明，硫化率随球磨时间和球磨转速的增大而增大，随球料比的增大先增大后减小，当球磨转速为750r/min、球磨时间为120min、球料比为50：1g/g时，荧光灯管芯柱玻璃中金属铅的硫化率可达96.18%.XRD结果表明，荧光灯管芯柱玻璃中金属铅的机械化学硫化产物为PbS、SEM和粒度结果表明，荧光灯管芯柱玻璃的粒径随球磨转速和球磨时间的增加而减小.

Lead mechanochemical sulfidation of fluorescent tube core glass

With sodium sulfide as the vulcanizing agent, the lead in the fluorescent tube core glass was rapidly transformed to lead sulfide by mechanochemical sulfidation. The different conditions of mechanochemical sulfidation, that is, milling time, milling speed and ball-to-material ratio were investigated by single factor experiment. And the structural properties of samples after mechanochemical sulfidation were characterized by SEM, XRD and particle size. The results showed that the sulfidation rate increased with the increase of milling time and milling speed, increased first and then decreased with the increase of ball-to-material ratio. When the milling speed was 750r/min, the milling time was 120min and the ball-to-material ratio was 50:1g/g, the lead sulfidation rate in the fluorescent tube core glass was 96.18%. The mechanochemical sulfidation product of lead in fluorescent lamp tube core glass was PbS. The particle size of fluorescent lamp core glass powder decreased with the increase of milling speed and milling time.