Replaced chain, bike makes grinding noise?
As you have a master link, removing the chain should be easy. 

My guess - you threaded the chain in the wrong way through the rear derailleur. There are a couple of metal extrusions between the rollers, intended to keep the chain from jumping.

With the chain still attached, look at the part of the RD I have tried to mark with "1" and check if the chain is rubbing against anything there.