Aluminate Cement, also known as High Alumina Cement, is a hydraulic cement made from bauxite and limestone or other materials that contain alumina. It has a high alumina content, typically between 40% and 70%, which gives it excellent resistance to high temperatures, acid, and sulfates. Powder Calcium Aluminate Cement is a fine powder that is typically used as a binder in refractory materials, such as high-temperature cements, mortars, and concretes. It can also be used as an additive to improve the performance of other types of cement and concrete.