Answer:
Yes. When ground up into very fine particles (like smoke) and heated to a significant temperature (still a solid, though) it could turn into a vapor because all of the small particles would float around. Although, you might be thinking of salt turning into a gas (boiling), which it would do at 2575 °F (1413 °C), which is much higher than the temperature at which it could evaporate, considering that the atoms have to break their ionic bonds completely.