The present application relates to a melt processing plant, having a melt feeder for feeding melt to a processing head, in particular a granulator head, wherein the melt feeder is assigned, upstream of the processing head, a start-up valve for discharging the melt during a start-up and/or conversion phase, and to a method for melt processing in a melt processing plant of said type. According to the invention, the start-up valve is assigned a portioning device for dividing the discharged melt into melt portions, wherein a cooling device for cooling the melt portions into at least partially solidified material lumps is provided.