If you are kicked from chat for a rules infraction, you won't be able to get back in for a certain period of time. If you are banned from chat for a rules infraction, you won't be able to get back in for a certain period of time, or perm., depending on the ban.

ALL OTHER INSTANCES of being "kicked" from the room is simply your computer dropping the connection: your wifi drops the connection, your browser cookies are full, etc. It has NOTHING to do w/chat.