How can I separate the small icons in a single icon into one icon in PS?

1, using the slicing tool is relatively simple and fast, the icon to cut one by one cut out, cut well after the storage format for the web, the export will appear a images file inside is just cut good picture

2, cut the way you want to cut the small icon, (you can remember the first crop of the length and width of the parameter so that the next icon to use the crop when the crop properties, so that the size of the clip) and then save, and then return to the original image (the first step of history "open" click) continue to crop the next icon, save Then proceed to the next icon---------

How can I separate the small icons in a single icon into one icon in PS?