Separant for borosilicate glass bead fire polishing

The invention provides a separant for fire polishing of borosilicate glass beads. The separant is prepared from the following components in percentage by mass: 10 to 60 percent of alumina powder, 30 to 80 percent of quartz sand, 3 to 0.5 percent of table salt, 1 to 3 percent of cerium oxide powder and 1 to 3 percent of magnesium oxide powder; wherein the particle size of the alumina powder is 140-200 meshes; the particle size of the quartz sand is 40-140 meshes; the table salt is of an industrial grade, and the particle size of the table salt is 100-120 meshes; the particle size of the cerium oxide powder is 180-220 meshes; the particle size of the magnesium oxide powder is 180-220 meshes; and the water content of the separant is less than 1% by mass. According to the invention, the chemical component content, the raw material granularity and the like of the separant are designed, so that the separant can meet the requirements of production quality and production efficiency of borosilicate glass beads. 提供了一种硼