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