Leaves have a tremendous amount of organic matter, but not much available nitrogen. The carbon nitrogen (C:N) ratio of dry leaves is often 60:1, whereas decomposition proceeds best at C:N of 20:1 to 30:1, releasing the additional nitrogen trapped in the organic matter... to accelerate decomposition, you need to add some nitrogen. This could come from manure, but can also come from chemical fertilizer. Rather that worrying about precise ratios, just add some nitrogen any way that is practical for you. If you have some fertilizer that has gotten damp and does not spread or mix well into soil, consider adding that into your leaves that you are trying to compost.
Chopping the leaves with a mower is helpful to start the breakdown process. Your wire bin is also helpful, air gets to the leaves from the sides, worms get into the pile from below. This is far better than leaving them bagged up. My compost in a pile on the ground, and occasionally turned, breaks down to useable compost in several months.