What is pearl sand?

Fused ceramic sand (commonly known as "Zhu Bao sand") is a spherical refractory particle with Al2O3-SiO _ 2 as the main mineral component and a general particle size of 270~6 meshes (0.053~3.35mm in diameter), which is made of bauxite by smelting at high temperature (about 2200℃) and then cooling by high-pressure air jet. At present, Sanmenxia Qiangxin Casting Material Co., Ltd. is a relatively large pearl sand production enterprise in China. The products produced are of good quality and stable supply. Welcome to call for discussion.