Spilled Epoxy coatings can be removed from the tile by melting with extreme heat, removal with acetone, rubbing with sandpaper, or/and using Paint strippers mage for epoxy.
Epoxy coatings are high-strength glue resins that bond with a chemical reaction, which makes it very difficult to remove when it spills on a surface. When it has not cured, however, you can easily dissolve it with alcohol since it is in a liquid-like consistency. Vinegar and acetone can also be used.
This method is used to remove cured and uncured epoxy stains.
Dampen a soft cloth with acetone or any other epoxy solvent such as vinegar. Rub the affected areas just enough to loosen the epoxy. When soft enough, use a plastic scraper applying moderate effort to avoid damaging the tiles.
Clean the scraped surface with a dry and all-purpose cleaner to remove any dust and residue that is left.
Other chemicals and solvents that can be used to remove cured epoxy coating are: Paint thinner, isopropyl alcohol, methyl ethyl ketone (MEK), Methylated spirits, etc.
The good thing with tiles is that they can withstand high temperatures that can melt Epoxy. At 1000 degrees Fahrenheit, in about 30 seconds to a minute, Epoxy softens. Just after heating, don’t let it sit for long, get a plastic scraper, and remove as much epoxy as you can, as fast as possible.
If the Epoxy gets hard again, repeat the process as before. When you’ve scrapped all the epoxy, clean the surface with an all-purpose tile cleaner and a soft non-abrasive rag.