Because of these drawbacks, {HEAD ~ the slurry} is usually converted to {TAIL ~ an iron sulfide powder} through filtration, washing, and subsequent drying 
is usually converted to
Because of these drawbacks , { HEAD ~ the slurry } is usually converted to { TAIL ~ an iron sulfide powder } through filtration , washing , and subsequent drying
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH