Based on the severity of your offense, as well as how many previous bans you've received your temporary ban could fall under and of the values on the below scale:
24 Hour-> 48 Hour -> 1 Week -> PERMANENT
This is a sliding scale and determined on a case-by-case basis. If an offense is considered to be particularly egregious, the duration of the ban may skip one or more steps in this process.
Note: Any previous permanent bans on your record, including from previous accounts, will result in all future offenses being a permanent ban.