The common method for extracting the available components from alunite is to roast the ore between 700∼800 ℃ and to decompose the calcined alunite thus obtained with acid. In this study, a different extraction technique was tried and was found the fact that preliminary baking of the grinded alunite（200 mesh） being mixed with the required amount of 85 % H₂SO₄ at 200 ℃ for an hour in an electric furnace could yield over 97 % of the available components in the ore by extracting the baked ore only with water.