I claim the ornamental design for a rotating spray bar, as shown and described.
FIG. 1 is a perspective view of a rotating spray bar including my new design.
FIG. 2 is a front plan view of the rotating spray bar, the back plan view being a mirror image of the front view.
FIG. 3 is a top plan view of the rotating spray bar.
FIG. 4 is a bottom plan view of the rotating spray bar.
FIG. 5 is a first side view of the rotating spray bar; and,
FIG. 6 is a second side view of the rotating spray bar.
The broken lines in the drawings are included for the purpose of illustrating portions of the rotating spray bar that form no part of the claimed design.
Apparatus and process for the separation of hydrophobic and hydrophilic particles using microbubble column flotation together with a process and apparatus for generation of microbubbles