Abstract: The invention relates to an apparatus for spraying a coolant on steel slabs, comprising spraying nozzles preceded by a mixing chamber with separate feed lines for the propellant and the coolant, the nozzle discharges being designed in such a manner that the mixture of propellant and coolant impinges in the form of wide fans, at an acute angle and in opposite directions on the slab surface, in that the nozzle discharges start from a common nozzle housing into which issues the mixing chamber, the coolant connector to the mixing chamber consisting of an exchangeable inset tube projecting into the mixing chamber, in particular as regards slab-format castings obtained from a continuous casting mold, where the particular nozzles located in the gap between two adjoining guide rollers for the cast slab are directed parallel to the axes of the guide rollers and the nozzle housing is mounted between the plane of the guide roller axes and the slab surface.

Abstract: A device for spraying a mixture of coolant and propellant onto steel plate emerging from a continuous casting mold through guide rolls comprising a mixing chamber and means separately feeding coolant and propellant thereto, a nozzle housing having at least two nozzle outlets offset in side by side and oppositely directed relationship and adapted to discharge the coolant/propellant mixture in wide dispersion and at an acute angle onto the steel plate and feed means connecting the mixing chamber with the nozzle housing and including a replaceable insert pipe extending into the mixing chamber.