Employee, a Mechanic, was heating a wear sleeve on a D11R. He had a heating torch in one hand & was going to reposition a second torch with the other hand. He didn't get secure grip on the torch and slipped with it. He then tried to grab for it with his Rt. Hand and in the process received a 1st & 2nd Degree burn to his Rt. wrist, approx. 1.25 inches across.