The most familiar example of sublimation can occur when wet clothes are hung out on the line on a winter day when the temperature is below freezing. The water on the clothes freezes and then evaporates into vapor without melting. Solid iodine will change into a vapor when it is warmed without becoming a liquid. Then, when the vapor is cooled, the iodine will change back into crystals. The change of a vapor back into a solid is part of sublimation.
Sublimation is used in industry to purify substances.
When a solid changes directly into a vapor, only the pure substance evaporates, while the impurities remain. Pure sulfur, benzoin, and sal ammoniac are made by this process. Inc. How to cite this article.