The tundish spraying machine for molten metal utilizes a continuously working mixer to ensure an always homogenous mix, featuring an adjustable, controlled water-material proportion for precision. The wet material is conveyed constantly, and the adjustable pressure allows for a long lifetime, with an adjustable screw pump in case of wear. The tundish spraying machine’s use of high-quality materials results in few wearing parts and low wear, contributing to the durability and reliability of the machine. During the spraying process, there is no dust rising, ensuring a clean and safe working environment. All machine parts that have been in contact with wet mortar refractory can be cleaned quickly and easily.