Sintered Calcium Aluminate ( Sintered Refining Slag) is calcined in the rotary kiln with the high quality raw materials.It’s a good quality refining agent.It is characterized by very strong desulfurization and deoxygenation, low melting point,high melting speed, it can shorten smelting time, reduce the energy consumption,reduce dust pollution in the steel plant,reduce the consumption of the ladle refractory materials,increase the service life of the ladle.