Roasting sand (transformed sand), obtained by repeatedly boiling and re-burning our company's high-quality silica sand at high temperatures, fully transforms and expands the sand grains, and deeply activates the sand grain surface. It features highly clean sand grain surfaces, low ash content, low gas emission, and low expansion at high temperatures. It can significantly reduce the amount of binder added, effectively ensure casting dimensions and precision, and improve the quality and yield of castings.

Our calcined sand is produced through numerous production processes, ensuring high-quality products. It is widely used in the mold-making and core-making processes for automotive engine blocks, bearings, brake discs, and other castings, as well as in the manufacturing of coated sand. Our calcined sand offers competitive pricing and excellent quality.