You can use steel wool on enameled cast iron pans or cookware.
However you must be very careful when using steel wool on the enameled cast iron because it can scratch the enameled cast iron.
When that happens it can allow your food to stick to the enameled cast iron cookware.
It's not recommended to use any steel wool or abrasive cleaning products on your enameled cast iron cookware to prevent damage to it.
It's recommended to use some degreaser and even just a brush for dishes or use a sponge to wipe the enameled cast iron cookware clean.
You could use some baking soda and some vinegar and allow it to sit to clean the enameled cast iron without harming it.
Then use a sponge to clean the enameled cast iron.