Safety: Please work responsibly for your own safety in your enameling studio. At a minimum, this includes the wearing dark safety glasses when using the torch and a dust mask at least while sifting. A fire extinguisher should also be at hand.
I torch enamel with a trivet atop a fire brick on a fire-proof surface using an oxygen/propane torch. Please use the enamel set up and torch that works best for you. If you have interest, you can see my set up at https://www.wirejewelry.com/jewelry_making_patterns_tutorials/Torch-Enameling-with-Opaque-Enamels_300.html