Rust forms where water and iron are present, after the iron reacts with oxygen. Rust can form on dishes when they are exposed to water for long periods of time. Removing rust from dishes is not always an easy thing to do, as it depends on the severity of the rust stain, however, before tossing your dishes in the trash, try the following tips.
Make a solution using lemon juice, white vinegar and salt. Apply the solution to dry, rust-stained dishes, and then scrub with a sponge until all traces of rust are removed.
Apply peroxide directly to the rust-stained area of the dish. Let sit for 15 minutes. If rust is still present, make a paste of peroxide and cream of tartar and apply it to the rusted areas. Scrub with a sponge until rust is gone.
Add to a bucket 1 gallon of cold water and 1/3 cup of a commercial rust remover. Soak the rusted dishes for 15 minutes, and then wipe with a sponge to remove any remaining traces of rust. Be sure to use gloves, as they will help protect the skin from chemicals.