The phases of sulfuric acid slag of various sizes were drawn by seven-step method in the improved separation condition of disturber, and phases of thallium were compared before and after the slag was grinned to analyze phase migration.

• 为了进一步探讨颗粒物中铊相态提取的技术和方法，在优化干扰物分离条件下，采用七步法提取了几种不同粒径硫酸废渣中铊的相态，比较了废渣研磨前、后各相态铊的异同。