Method for preparing calcium sulfate whisker by using reduced pressure distillation water and carbide slag

The invention discloses a method for preparing calcium sulfate whiskers by using reduced pressure distillation water and carbide slag, and relates to a preparation method of an inorganic material. According to the method, prepared reduced pressure distillation water is used as a solvent and reacts with calcined carbide slag and sulfuric acid to prepare slurry, the slurry is subjected to a hydrothermal reaction in a hydrothermal reaction kettle for 8 hours, and the obtained product is the calcium sulfate whisker. The prepared calcium sulfate whisker is high in purity, uniform in form and good in dispersity, and the length-diameter ratio of the calcium sulfate whisker is about 50-100. The calcium sulfate whisker is used as an important industrial raw material and is widely applied to the fields of building materials, chemical engineering, medicine and the like, and the carbide slag is converted into the calcium sulfate whisker, so that the emission of wastes can be effectively reduced, and useful products can b