Recycle Bin is a special folder somehow known as Trash folder too where your deleted files get stored and can be restored if needed. But if the file getting deleted from Recycle Bin then it cant be recovered. If you still want to recover deleted files after deleted from Recycle Bin then read the post – Can Deleted File Recovered From Hard Disk, Pendrive or Memory card? .
Keep in mind that if your file is in Recycle Bin then its still consuming size from hard disk till its not been deleted from Recycle Bin permanently. For example if your Drive size is 50 GB used with 30GB and you deleted 10 GB files to Recycle Bin. Then also it will show you 30GB in use till the file snot getting deleted from Recycle Bin.